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Arti Zirk 2023-01-21 21:50:37 +02:00
parent 2de3a91b0a
commit 349c363a1a
21 changed files with 4075 additions and 0 deletions
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.gitignore vendored Normal file
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.idea
cmake-build

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CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.19)
project(auto LANGUAGES C)
set(LIBOPENCM3_DIR ${CMAKE_SOURCE_DIR}/libopencm3)
set(CMAKE_C_STANDARD 99)
add_compile_options(
-Wall
-Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration
-Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes
-ggdb3
-O0
)
add_link_options(
)
add_compile_definitions(
STM32F4
STM32F401RET6
DEBUG
TARGETS=stm32/f4
)
add_executable(auto src/main.c)
set_target_properties(auto PROPERTIES SUFFIX .elf)
add_custom_target(libopencm3 make TARGETS=stm32/f4 -j8 WORKING_DIRECTORY ${LIBOPENCM3_DIR})
#link_directories(${LIBOPENCM3_DIR}/lib)
target_link_libraries(auto PUBLIC ${LIBOPENCM3_DIR}/lib/libopencm3_stm32f4.a)
add_subdirectory(RTT)
target_link_libraries(auto PUBLIC RTT)
target_include_directories(auto PUBLIC
RTT ${LIBOPENCM3_DIR}/include
)

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{
"version": 3,
"cmakeMinimumRequired": {
"major": 3,
"minor": 19,
"patch": 0
},
"configurePresets": [
{
"name": "default",
"displayName": "Default Config",
"description": "Default build using Ninja generator",
"generator": "Ninja",
"binaryDir": "${sourceDir}/cmake-build",
"toolchainFile": "toolchain-STM32F4.cmake"
}
],
"buildPresets": [
{
"name": "default",
"configurePreset": "default"
}
]
}

8
README.md
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# STM32F401 tests using libopencm3 # STM32F401 tests using libopencm3
### Print libopencm3 variables
make -f print_vars.mk print_genlink_vars
### Build linker file
make -f print_vars.mk generated.STM32F401RET6.ld

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add_library(RTT OBJECT
SEGGER_RTT.c
SEGGER_RTT_printf.c
SEGGER_RTT_Syscalls_GCC.c
)
target_include_directories(RTT
INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
)

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RTT/SEGGER_RTT.c Normal file
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/*********************************************************************
* SEGGER Microcontroller GmbH *
* The Embedded Experts *
**********************************************************************
* *
* (c) 1995 - 2019 SEGGER Microcontroller GmbH *
* *
* www.segger.com Support: support@segger.com *
* *
**********************************************************************
* *
* SEGGER RTT * Real Time Transfer for embedded targets *
* *
**********************************************************************
* *
* All rights reserved. *
* *
* SEGGER strongly recommends to not make any changes *
* to or modify the source code of this software in order to stay *
* compatible with the RTT protocol and J-Link. *
* *
* Redistribution and use in source and binary forms, with or *
* without modification, are permitted provided that the following *
* condition is met: *
* *
* o Redistributions of source code must retain the above copyright *
* notice, this condition and the following disclaimer. *
* *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
* DAMAGE. *
* *
**********************************************************************
---------------------------END-OF-HEADER------------------------------
File : SEGGER_RTT.h
Purpose : Implementation of SEGGER real-time transfer which allows
real-time communication on targets which support debugger
memory accesses while the CPU is running.
Revision: $Rev: 20869 $
----------------------------------------------------------------------
*/
#ifndef SEGGER_RTT_H
#define SEGGER_RTT_H
#include "SEGGER_RTT_Conf.h"
/*********************************************************************
*
* Defines, defaults
*
**********************************************************************
*/
#ifndef RTT_USE_ASM
#if (defined __SES_ARM) // SEGGER Embedded Studio
#define _CC_HAS_RTT_ASM_SUPPORT 1
#elif (defined __CROSSWORKS_ARM) // Rowley Crossworks
#define _CC_HAS_RTT_ASM_SUPPORT 1
#elif (defined __ARMCC_VERSION) // ARM compiler
#if (__ARMCC_VERSION >= 6000000) // ARM compiler V6.0 and later is clang based
#define _CC_HAS_RTT_ASM_SUPPORT 1
#else
#define _CC_HAS_RTT_ASM_SUPPORT 0
#endif
#elif (defined __GNUC__) // GCC
#define _CC_HAS_RTT_ASM_SUPPORT 1
#elif (defined __clang__) // Clang compiler
#define _CC_HAS_RTT_ASM_SUPPORT 1
#elif ((defined __IASMARM__) || (defined __ICCARM__)) // IAR assembler/compiler
#define _CC_HAS_RTT_ASM_SUPPORT 1
#else
#define _CC_HAS_RTT_ASM_SUPPORT 0
#endif
#if ((defined __IASMARM__) || (defined __ICCARM__)) // IAR assembler/compiler
//
// IAR assembler / compiler
//
#if (__VER__ < 6300000)
#define VOLATILE
#else
#define VOLATILE volatile
#endif
#if (defined __ARM7M__) // Needed for old versions that do not know the define yet
#if (__CORE__ == __ARM7M__) // Cortex-M3
#define _CORE_HAS_RTT_ASM_SUPPORT 1
#endif
#endif
#if (defined __ARM7EM__) // Needed for old versions that do not know the define yet
#if (__CORE__ == __ARM7EM__) // Cortex-M4/M7
#define _CORE_HAS_RTT_ASM_SUPPORT 1
#define _CORE_NEEDS_DMB 1
#define RTT__DMB() asm VOLATILE ("DMB");
#endif
#endif
#if (defined __ARM8M_BASELINE__) // Needed for old versions that do not know the define yet
#if (__CORE__ == __ARM8M_BASELINE__) // Cortex-M23
#define _CORE_HAS_RTT_ASM_SUPPORT 0
#define _CORE_NEEDS_DMB 1
#define RTT__DMB() asm VOLATILE ("DMB");
#endif
#endif
#if (defined __ARM8M_MAINLINE__) // Needed for old versions that do not know the define yet
#if (__CORE__ == __ARM8M_MAINLINE__) // Cortex-M33
#define _CORE_HAS_RTT_ASM_SUPPORT 1
#define _CORE_NEEDS_DMB 1
#define RTT__DMB() asm VOLATILE ("DMB");
#endif
#endif
#else
//
// GCC / Clang
//
#if (defined __ARM_ARCH_7M__) // Cortex-M3
#define _CORE_HAS_RTT_ASM_SUPPORT 1
#elif (defined __ARM_ARCH_7EM__) // Cortex-M4/M7
#define _CORE_HAS_RTT_ASM_SUPPORT 1
#define _CORE_NEEDS_DMB 1
#define RTT__DMB() __asm volatile ("dmb\n" : : :);
#elif (defined __ARM_ARCH_8M_BASE__) // Cortex-M23
#define _CORE_HAS_RTT_ASM_SUPPORT 0
#define _CORE_NEEDS_DMB 1
#define RTT__DMB() __asm volatile ("dmb\n" : : :);
#elif (defined __ARM_ARCH_8M_MAIN__) // Cortex-M33
#define _CORE_HAS_RTT_ASM_SUPPORT 1
#define _CORE_NEEDS_DMB 1
#define RTT__DMB() __asm volatile ("dmb\n" : : :);
#else
#define _CORE_HAS_RTT_ASM_SUPPORT 0
#endif
#endif
//
// If IDE and core support the ASM version, enable ASM version by default
//
#ifndef _CORE_HAS_RTT_ASM_SUPPORT
#define _CORE_HAS_RTT_ASM_SUPPORT 0 // Default for unknown cores
#endif
#if (_CC_HAS_RTT_ASM_SUPPORT && _CORE_HAS_RTT_ASM_SUPPORT)
#define RTT_USE_ASM (1)
#else
#define RTT_USE_ASM (0)
#endif
#endif
//
// We need to know if a DMB is needed to make sure that on Cortex-M7 etc.
// the order of accesses to the ring buffers is guaranteed
// Needed for: Cortex-M7, Cortex-M23, Cortex-M33
//
#ifndef _CORE_NEEDS_DMB
#define _CORE_NEEDS_DMB 0
#endif
#ifndef RTT__DMB
#if _CORE_NEEDS_DMB
#error "Don't know how to place inline assembly for DMB"
#else
#define RTT__DMB()
#endif
#endif
#ifndef SEGGER_RTT_CPU_CACHE_LINE_SIZE
#define SEGGER_RTT_CPU_CACHE_LINE_SIZE (0) // On most target systems where RTT is used, we do not have a CPU cache, therefore 0 is a good default here
#endif
#ifndef SEGGER_RTT_UNCACHED_OFF
#if SEGGER_RTT_CPU_CACHE_LINE_SIZE
#error "SEGGER_RTT_UNCACHED_OFF must be defined when setting SEGGER_RTT_CPU_CACHE_LINE_SIZE != 0"
#else
#define SEGGER_RTT_UNCACHED_OFF (0)
#endif
#endif
#if RTT_USE_ASM
#if SEGGER_RTT_CPU_CACHE_LINE_SIZE
#error "RTT_USE_ASM is not available if SEGGER_RTT_CPU_CACHE_LINE_SIZE != 0"
#endif
#endif
#ifndef SEGGER_RTT_ASM // defined when SEGGER_RTT.h is included from assembly file
#include <stdlib.h>
#include <stdarg.h>
/*********************************************************************
*
* Defines, fixed
*
**********************************************************************
*/
//
// Determine how much we must pad the control block to make it a multiple of a cache line in size
// Assuming: U8 = 1B
// U16 = 2B
// U32 = 4B
// U8/U16/U32* = 4B
//
#if SEGGER_RTT_CPU_CACHE_LINE_SIZE // Avoid division by zero in case we do not have any cache
#define SEGGER_RTT__ROUND_UP_2_CACHE_LINE_SIZE(NumBytes) (((NumBytes + SEGGER_RTT_CPU_CACHE_LINE_SIZE - 1) / SEGGER_RTT_CPU_CACHE_LINE_SIZE) * SEGGER_RTT_CPU_CACHE_LINE_SIZE)
#else
#define SEGGER_RTT__ROUND_UP_2_CACHE_LINE_SIZE(NumBytes) (NumBytes)
#endif
#define SEGGER_RTT__CB_SIZE (16 + 4 + 4 + (SEGGER_RTT_MAX_NUM_UP_BUFFERS * 24) + (SEGGER_RTT_MAX_NUM_DOWN_BUFFERS * 24))
#define SEGGER_RTT__CB_PADDING (SEGGER_RTT__ROUND_UP_2_CACHE_LINE_SIZE(SEGGER_RTT__CB_SIZE) - SEGGER_RTT__CB_SIZE)
/*********************************************************************
*
* Types
*
**********************************************************************
*/
//
// Description for a circular buffer (also called "ring buffer")
// which is used as up-buffer (T->H)
//
typedef struct {
const char* sName; // Optional name. Standard names so far are: "Terminal", "SysView", "J-Scope_t4i4"
char* pBuffer; // Pointer to start of buffer
unsigned SizeOfBuffer; // Buffer size in bytes. Note that one byte is lost, as this implementation does not fill up the buffer in order to avoid the problem of being unable to distinguish between full and empty.
unsigned WrOff; // Position of next item to be written by either target.
volatile unsigned RdOff; // Position of next item to be read by host. Must be volatile since it may be modified by host.
unsigned Flags; // Contains configuration flags
} SEGGER_RTT_BUFFER_UP;
//
// Description for a circular buffer (also called "ring buffer")
// which is used as down-buffer (H->T)
//
typedef struct {
const char* sName; // Optional name. Standard names so far are: "Terminal", "SysView", "J-Scope_t4i4"
char* pBuffer; // Pointer to start of buffer
unsigned SizeOfBuffer; // Buffer size in bytes. Note that one byte is lost, as this implementation does not fill up the buffer in order to avoid the problem of being unable to distinguish between full and empty.
volatile unsigned WrOff; // Position of next item to be written by host. Must be volatile since it may be modified by host.
unsigned RdOff; // Position of next item to be read by target (down-buffer).
unsigned Flags; // Contains configuration flags
} SEGGER_RTT_BUFFER_DOWN;
//
// RTT control block which describes the number of buffers available
// as well as the configuration for each buffer
//
//
typedef struct {
char acID[16]; // Initialized to "SEGGER RTT"
int MaxNumUpBuffers; // Initialized to SEGGER_RTT_MAX_NUM_UP_BUFFERS (type. 2)
int MaxNumDownBuffers; // Initialized to SEGGER_RTT_MAX_NUM_DOWN_BUFFERS (type. 2)
SEGGER_RTT_BUFFER_UP aUp[SEGGER_RTT_MAX_NUM_UP_BUFFERS]; // Up buffers, transferring information up from target via debug probe to host
SEGGER_RTT_BUFFER_DOWN aDown[SEGGER_RTT_MAX_NUM_DOWN_BUFFERS]; // Down buffers, transferring information down from host via debug probe to target
#if SEGGER_RTT__CB_PADDING
unsigned char aDummy[SEGGER_RTT__CB_PADDING];
#endif
} SEGGER_RTT_CB;
/*********************************************************************
*
* Global data
*
**********************************************************************
*/
extern SEGGER_RTT_CB _SEGGER_RTT;
/*********************************************************************
*
* RTT API functions
*
**********************************************************************
*/
#ifdef __cplusplus
extern "C" {
#endif
int SEGGER_RTT_AllocDownBuffer (const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
int SEGGER_RTT_AllocUpBuffer (const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
int SEGGER_RTT_ConfigUpBuffer (unsigned BufferIndex, const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
int SEGGER_RTT_ConfigDownBuffer (unsigned BufferIndex, const char* sName, void* pBuffer, unsigned BufferSize, unsigned Flags);
int SEGGER_RTT_GetKey (void);
unsigned SEGGER_RTT_HasData (unsigned BufferIndex);
int SEGGER_RTT_HasKey (void);
unsigned SEGGER_RTT_HasDataUp (unsigned BufferIndex);
void SEGGER_RTT_Init (void);
unsigned SEGGER_RTT_Read (unsigned BufferIndex, void* pBuffer, unsigned BufferSize);
unsigned SEGGER_RTT_ReadNoLock (unsigned BufferIndex, void* pData, unsigned BufferSize);
int SEGGER_RTT_SetNameDownBuffer (unsigned BufferIndex, const char* sName);
int SEGGER_RTT_SetNameUpBuffer (unsigned BufferIndex, const char* sName);
int SEGGER_RTT_SetFlagsDownBuffer (unsigned BufferIndex, unsigned Flags);
int SEGGER_RTT_SetFlagsUpBuffer (unsigned BufferIndex, unsigned Flags);
int SEGGER_RTT_WaitKey (void);
unsigned SEGGER_RTT_Write (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
unsigned SEGGER_RTT_WriteNoLock (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
unsigned SEGGER_RTT_WriteSkipNoLock (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
unsigned SEGGER_RTT_ASM_WriteSkipNoLock (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
unsigned SEGGER_RTT_WriteString (unsigned BufferIndex, const char* s);
void SEGGER_RTT_WriteWithOverwriteNoLock(unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
unsigned SEGGER_RTT_PutChar (unsigned BufferIndex, char c);
unsigned SEGGER_RTT_PutCharSkip (unsigned BufferIndex, char c);
unsigned SEGGER_RTT_PutCharSkipNoLock (unsigned BufferIndex, char c);
unsigned SEGGER_RTT_GetAvailWriteSpace (unsigned BufferIndex);
unsigned SEGGER_RTT_GetBytesInBuffer (unsigned BufferIndex);
//
// Function macro for performance optimization
//
#define SEGGER_RTT_HASDATA(n) (((SEGGER_RTT_BUFFER_DOWN*)((char*)&_SEGGER_RTT.aDown[n] + SEGGER_RTT_UNCACHED_OFF))->WrOff - ((SEGGER_RTT_BUFFER_DOWN*)((char*)&_SEGGER_RTT.aDown[n] + SEGGER_RTT_UNCACHED_OFF))->RdOff)
#if RTT_USE_ASM
#define SEGGER_RTT_WriteSkipNoLock SEGGER_RTT_ASM_WriteSkipNoLock
#endif
/*********************************************************************
*
* RTT transfer functions to send RTT data via other channels.
*
**********************************************************************
*/
unsigned SEGGER_RTT_ReadUpBuffer (unsigned BufferIndex, void* pBuffer, unsigned BufferSize);
unsigned SEGGER_RTT_ReadUpBufferNoLock (unsigned BufferIndex, void* pData, unsigned BufferSize);
unsigned SEGGER_RTT_WriteDownBuffer (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
unsigned SEGGER_RTT_WriteDownBufferNoLock (unsigned BufferIndex, const void* pBuffer, unsigned NumBytes);
#define SEGGER_RTT_HASDATA_UP(n) (((SEGGER_RTT_BUFFER_UP*)((char*)&_SEGGER_RTT.aUp[n] + SEGGER_RTT_UNCACHED_OFF))->WrOff - ((SEGGER_RTT_BUFFER_UP*)((char*)&_SEGGER_RTT.aUp[n] + SEGGER_RTT_UNCACHED_OFF))->RdOff) // Access uncached to make sure we see changes made by the J-Link side and all of our changes go into HW directly
/*********************************************************************
*
* RTT "Terminal" API functions
*
**********************************************************************
*/
int SEGGER_RTT_SetTerminal (unsigned char TerminalId);
int SEGGER_RTT_TerminalOut (unsigned char TerminalId, const char* s);
/*********************************************************************
*
* RTT printf functions (require SEGGER_RTT_printf.c)
*
**********************************************************************
*/
int SEGGER_RTT_printf(unsigned BufferIndex, const char * sFormat, ...);
int SEGGER_RTT_vprintf(unsigned BufferIndex, const char * sFormat, va_list * pParamList);
#ifdef __cplusplus
}
#endif
#endif // ifndef(SEGGER_RTT_ASM)
/*********************************************************************
*
* Defines
*
**********************************************************************
*/
//
// Operating modes. Define behavior if buffer is full (not enough space for entire message)
//
#define SEGGER_RTT_MODE_NO_BLOCK_SKIP (0) // Skip. Do not block, output nothing. (Default)
#define SEGGER_RTT_MODE_NO_BLOCK_TRIM (1) // Trim: Do not block, output as much as fits.
#define SEGGER_RTT_MODE_BLOCK_IF_FIFO_FULL (2) // Block: Wait until there is space in the buffer.
#define SEGGER_RTT_MODE_MASK (3)
//
// Control sequences, based on ANSI.
// Can be used to control color, and clear the screen
//
#define RTT_CTRL_RESET "\x1B[0m" // Reset to default colors
#define RTT_CTRL_CLEAR "\x1B[2J" // Clear screen, reposition cursor to top left
#define RTT_CTRL_TEXT_BLACK "\x1B[2;30m"
#define RTT_CTRL_TEXT_RED "\x1B[2;31m"
#define RTT_CTRL_TEXT_GREEN "\x1B[2;32m"
#define RTT_CTRL_TEXT_YELLOW "\x1B[2;33m"
#define RTT_CTRL_TEXT_BLUE "\x1B[2;34m"
#define RTT_CTRL_TEXT_MAGENTA "\x1B[2;35m"
#define RTT_CTRL_TEXT_CYAN "\x1B[2;36m"
#define RTT_CTRL_TEXT_WHITE "\x1B[2;37m"
#define RTT_CTRL_TEXT_BRIGHT_BLACK "\x1B[1;30m"
#define RTT_CTRL_TEXT_BRIGHT_RED "\x1B[1;31m"
#define RTT_CTRL_TEXT_BRIGHT_GREEN "\x1B[1;32m"
#define RTT_CTRL_TEXT_BRIGHT_YELLOW "\x1B[1;33m"
#define RTT_CTRL_TEXT_BRIGHT_BLUE "\x1B[1;34m"
#define RTT_CTRL_TEXT_BRIGHT_MAGENTA "\x1B[1;35m"
#define RTT_CTRL_TEXT_BRIGHT_CYAN "\x1B[1;36m"
#define RTT_CTRL_TEXT_BRIGHT_WHITE "\x1B[1;37m"
#define RTT_CTRL_BG_BLACK "\x1B[24;40m"
#define RTT_CTRL_BG_RED "\x1B[24;41m"
#define RTT_CTRL_BG_GREEN "\x1B[24;42m"
#define RTT_CTRL_BG_YELLOW "\x1B[24;43m"
#define RTT_CTRL_BG_BLUE "\x1B[24;44m"
#define RTT_CTRL_BG_MAGENTA "\x1B[24;45m"
#define RTT_CTRL_BG_CYAN "\x1B[24;46m"
#define RTT_CTRL_BG_WHITE "\x1B[24;47m"
#define RTT_CTRL_BG_BRIGHT_BLACK "\x1B[4;40m"
#define RTT_CTRL_BG_BRIGHT_RED "\x1B[4;41m"
#define RTT_CTRL_BG_BRIGHT_GREEN "\x1B[4;42m"
#define RTT_CTRL_BG_BRIGHT_YELLOW "\x1B[4;43m"
#define RTT_CTRL_BG_BRIGHT_BLUE "\x1B[4;44m"
#define RTT_CTRL_BG_BRIGHT_MAGENTA "\x1B[4;45m"
#define RTT_CTRL_BG_BRIGHT_CYAN "\x1B[4;46m"
#define RTT_CTRL_BG_BRIGHT_WHITE "\x1B[4;47m"
#endif
/*************************** End of file ****************************/

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/*********************************************************************
* SEGGER Microcontroller GmbH *
* The Embedded Experts *
**********************************************************************
* *
* (c) 1995 - 2020 SEGGER Microcontroller GmbH *
* *
* www.segger.com Support: support@segger.com *
* *
**********************************************************************
* *
* SEGGER RTT * Real Time Transfer for embedded targets *
* *
**********************************************************************
* *
* All rights reserved. *
* *
* SEGGER strongly recommends to not make any changes *
* to or modify the source code of this software in order to stay *
* compatible with the RTT protocol and J-Link. *
* *
* Redistribution and use in source and binary forms, with or *
* without modification, are permitted provided that the following *
* condition is met: *
* *
* o Redistributions of source code must retain the above copyright *
* notice, this condition and the following disclaimer. *
* *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
* DAMAGE. *
* *
**********************************************************************
---------------------------END-OF-HEADER------------------------------
File : SEGGER_RTT_Conf.h
Purpose : Implementation of SEGGER real-time transfer (RTT) which
allows real-time communication on targets which support
debugger memory accesses while the CPU is running.
Revision: $Rev: 21386 $
*/
#ifndef SEGGER_RTT_CONF_H
#define SEGGER_RTT_CONF_H
#ifdef __IAR_SYSTEMS_ICC__
#include <intrinsics.h>
#endif
/*********************************************************************
*
* Defines, configurable
*
**********************************************************************
*/
//
// Take in and set to correct values for Cortex-A systems with CPU cache
//
//#define SEGGER_RTT_CPU_CACHE_LINE_SIZE (32) // Largest cache line size (in bytes) in the current system
//#define SEGGER_RTT_UNCACHED_OFF (0xFB000000) // Address alias where RTT CB and buffers can be accessed uncached
//
// Most common case:
// Up-channel 0: RTT
// Up-channel 1: SystemView
//
#ifndef SEGGER_RTT_MAX_NUM_UP_BUFFERS
#define SEGGER_RTT_MAX_NUM_UP_BUFFERS (1) // Max. number of up-buffers (T->H) available on this target (Default: 3)
#endif
//
// Most common case:
// Down-channel 0: RTT
// Down-channel 1: SystemView
//
#ifndef SEGGER_RTT_MAX_NUM_DOWN_BUFFERS
#define SEGGER_RTT_MAX_NUM_DOWN_BUFFERS (1) // Max. number of down-buffers (H->T) available on this target (Default: 3)
#endif
#ifndef BUFFER_SIZE_UP
#define BUFFER_SIZE_UP (1024) // Size of the buffer for terminal output of target, up to host (Default: 1k)
#endif
#ifndef BUFFER_SIZE_DOWN
#define BUFFER_SIZE_DOWN (16) // Size of the buffer for terminal input to target from host (Usually keyboard input) (Default: 16)
#endif
#ifndef SEGGER_RTT_PRINTF_BUFFER_SIZE
#define SEGGER_RTT_PRINTF_BUFFER_SIZE (64u) // Size of buffer for RTT printf to bulk-send chars via RTT (Default: 64)
#endif
#ifndef SEGGER_RTT_MODE_DEFAULT
#define SEGGER_RTT_MODE_DEFAULT SEGGER_RTT_MODE_NO_BLOCK_SKIP // Mode for pre-initialized terminal channel (buffer 0)
#endif
/*********************************************************************
*
* RTT memcpy configuration
*
* memcpy() is good for large amounts of data,
* but the overhead is big for small amounts, which are usually stored via RTT.
* With SEGGER_RTT_MEMCPY_USE_BYTELOOP a simple byte loop can be used instead.
*
* SEGGER_RTT_MEMCPY() can be used to replace standard memcpy() in RTT functions.
* This is may be required with memory access restrictions,
* such as on Cortex-A devices with MMU.
*/
#ifndef SEGGER_RTT_MEMCPY_USE_BYTELOOP
#define SEGGER_RTT_MEMCPY_USE_BYTELOOP 0 // 0: Use memcpy/SEGGER_RTT_MEMCPY, 1: Use a simple byte-loop
#endif
//
// Example definition of SEGGER_RTT_MEMCPY to external memcpy with GCC toolchains and Cortex-A targets
//
//#if ((defined __SES_ARM) || (defined __CROSSWORKS_ARM) || (defined __GNUC__)) && (defined (__ARM_ARCH_7A__))
// #define SEGGER_RTT_MEMCPY(pDest, pSrc, NumBytes) SEGGER_memcpy((pDest), (pSrc), (NumBytes))
//#endif
//
// Target is not allowed to perform other RTT operations while string still has not been stored completely.
// Otherwise we would probably end up with a mixed string in the buffer.
// If using RTT from within interrupts, multiple tasks or multi processors, define the SEGGER_RTT_LOCK() and SEGGER_RTT_UNLOCK() function here.
//
// SEGGER_RTT_MAX_INTERRUPT_PRIORITY can be used in the sample lock routines on Cortex-M3/4.
// Make sure to mask all interrupts which can send RTT data, i.e. generate SystemView events, or cause task switches.
// When high-priority interrupts must not be masked while sending RTT data, SEGGER_RTT_MAX_INTERRUPT_PRIORITY needs to be adjusted accordingly.
// (Higher priority = lower priority number)
// Default value for embOS: 128u
// Default configuration in FreeRTOS: configMAX_SYSCALL_INTERRUPT_PRIORITY: ( configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY << (8 - configPRIO_BITS) )
// In case of doubt mask all interrupts: 1 << (8 - BASEPRI_PRIO_BITS) i.e. 1 << 5 when 3 bits are implemented in NVIC
// or define SEGGER_RTT_LOCK() to completely disable interrupts.
//
#ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY
#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20) // Interrupt priority to lock on SEGGER_RTT_LOCK on Cortex-M3/4 (Default: 0x20)
#endif
/*********************************************************************
*
* RTT lock configuration for SEGGER Embedded Studio,
* Rowley CrossStudio and GCC
*/
#if ((defined(__SES_ARM) || defined(__SES_RISCV) || defined(__CROSSWORKS_ARM) || defined(__GNUC__) || defined(__clang__)) && !defined (__CC_ARM) && !defined(WIN32))
#if (defined(__ARM_ARCH_6M__) || defined(__ARM_ARCH_8M_BASE__))
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
__asm volatile ("mrs %0, primask \n\t" \
"movs r1, #1 \n\t" \
"msr primask, r1 \n\t" \
: "=r" (_SEGGER_RTT__LockState) \
: \
: "r1", "cc" \
);
#define SEGGER_RTT_UNLOCK() __asm volatile ("msr primask, %0 \n\t" \
: \
: "r" (_SEGGER_RTT__LockState) \
: \
); \
}
#elif (defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_8M_MAIN__))
#ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY
#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20)
#endif
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
__asm volatile ("mrs %0, basepri \n\t" \
"mov r1, %1 \n\t" \
"msr basepri, r1 \n\t" \
: "=r" (_SEGGER_RTT__LockState) \
: "i"(SEGGER_RTT_MAX_INTERRUPT_PRIORITY) \
: "r1", "cc" \
);
#define SEGGER_RTT_UNLOCK() __asm volatile ("msr basepri, %0 \n\t" \
: \
: "r" (_SEGGER_RTT__LockState) \
: \
); \
}
#elif defined(__ARM_ARCH_7A__)
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
__asm volatile ("mrs r1, CPSR \n\t" \
"mov %0, r1 \n\t" \
"orr r1, r1, #0xC0 \n\t" \
"msr CPSR_c, r1 \n\t" \
: "=r" (_SEGGER_RTT__LockState) \
: \
: "r1", "cc" \
);
#define SEGGER_RTT_UNLOCK() __asm volatile ("mov r0, %0 \n\t" \
"mrs r1, CPSR \n\t" \
"bic r1, r1, #0xC0 \n\t" \
"and r0, r0, #0xC0 \n\t" \
"orr r1, r1, r0 \n\t" \
"msr CPSR_c, r1 \n\t" \
: \
: "r" (_SEGGER_RTT__LockState) \
: "r0", "r1", "cc" \
); \
}
#elif defined(__riscv) || defined(__riscv_xlen)
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
__asm volatile ("csrr %0, mstatus \n\t" \
"csrci mstatus, 8 \n\t" \
"andi %0, %0, 8 \n\t" \
: "=r" (_SEGGER_RTT__LockState) \
: \
: \
);
#define SEGGER_RTT_UNLOCK() __asm volatile ("csrr a1, mstatus \n\t" \
"or %0, %0, a1 \n\t" \
"csrs mstatus, %0 \n\t" \
: \
: "r" (_SEGGER_RTT__LockState) \
: "a1" \
); \
}
#else
#define SEGGER_RTT_LOCK()
#define SEGGER_RTT_UNLOCK()
#endif
#endif
/*********************************************************************
*
* RTT lock configuration for IAR EWARM
*/
#ifdef __ICCARM__
#if (defined (__ARM6M__) && (__CORE__ == __ARM6M__)) || \
(defined (__ARM8M_BASELINE__) && (__CORE__ == __ARM8M_BASELINE__))
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = __get_PRIMASK(); \
__set_PRIMASK(1);
#define SEGGER_RTT_UNLOCK() __set_PRIMASK(_SEGGER_RTT__LockState); \
}
#elif (defined (__ARM7EM__) && (__CORE__ == __ARM7EM__)) || \
(defined (__ARM7M__) && (__CORE__ == __ARM7M__)) || \
(defined (__ARM8M_MAINLINE__) && (__CORE__ == __ARM8M_MAINLINE__)) || \
(defined (__ARM8M_MAINLINE__) && (__CORE__ == __ARM8M_MAINLINE__))
#ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY
#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20)
#endif
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = __get_BASEPRI(); \
__set_BASEPRI(SEGGER_RTT_MAX_INTERRUPT_PRIORITY);
#define SEGGER_RTT_UNLOCK() __set_BASEPRI(_SEGGER_RTT__LockState); \
}
#elif (defined (__ARM7A__) && (__CORE__ == __ARM7A__)) || \
(defined (__ARM7R__) && (__CORE__ == __ARM7R__))
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
__asm volatile ("mrs r1, CPSR \n\t" \
"mov %0, r1 \n\t" \
"orr r1, r1, #0xC0 \n\t" \
"msr CPSR_c, r1 \n\t" \
: "=r" (_SEGGER_RTT__LockState) \
: \
: "r1", "cc" \
);
#define SEGGER_RTT_UNLOCK() __asm volatile ("mov r0, %0 \n\t" \
"mrs r1, CPSR \n\t" \
"bic r1, r1, #0xC0 \n\t" \
"and r0, r0, #0xC0 \n\t" \
"orr r1, r1, r0 \n\t" \
"msr CPSR_c, r1 \n\t" \
: \
: "r" (_SEGGER_RTT__LockState) \
: "r0", "r1", "cc" \
); \
}
#endif
#endif
/*********************************************************************
*
* RTT lock configuration for IAR RX
*/
#ifdef __ICCRX__
#define SEGGER_RTT_LOCK() { \
unsigned long _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = __get_interrupt_state(); \
__disable_interrupt();
#define SEGGER_RTT_UNLOCK() __set_interrupt_state(_SEGGER_RTT__LockState); \
}
#endif
/*********************************************************************
*
* RTT lock configuration for IAR RL78
*/
#ifdef __ICCRL78__
#define SEGGER_RTT_LOCK() { \
__istate_t _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = __get_interrupt_state(); \
__disable_interrupt();
#define SEGGER_RTT_UNLOCK() __set_interrupt_state(_SEGGER_RTT__LockState); \
}
#endif
/*********************************************************************
*
* RTT lock configuration for KEIL ARM
*/
#ifdef __CC_ARM
#if (defined __TARGET_ARCH_6S_M)
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
register unsigned char _SEGGER_RTT__PRIMASK __asm( "primask"); \
_SEGGER_RTT__LockState = _SEGGER_RTT__PRIMASK; \
_SEGGER_RTT__PRIMASK = 1u; \
__schedule_barrier();
#define SEGGER_RTT_UNLOCK() _SEGGER_RTT__PRIMASK = _SEGGER_RTT__LockState; \
__schedule_barrier(); \
}
#elif (defined(__TARGET_ARCH_7_M) || defined(__TARGET_ARCH_7E_M))
#ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY
#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20)
#endif
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
register unsigned char BASEPRI __asm( "basepri"); \
_SEGGER_RTT__LockState = BASEPRI; \
BASEPRI = SEGGER_RTT_MAX_INTERRUPT_PRIORITY; \
__schedule_barrier();
#define SEGGER_RTT_UNLOCK() BASEPRI = _SEGGER_RTT__LockState; \
__schedule_barrier(); \
}
#endif
#endif
/*********************************************************************
*
* RTT lock configuration for TI ARM
*/
#ifdef __TI_ARM__
#if defined (__TI_ARM_V6M0__)
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = __get_PRIMASK(); \
__set_PRIMASK(1);
#define SEGGER_RTT_UNLOCK() __set_PRIMASK(_SEGGER_RTT__LockState); \
}
#elif (defined (__TI_ARM_V7M3__) || defined (__TI_ARM_V7M4__))
#ifndef SEGGER_RTT_MAX_INTERRUPT_PRIORITY
#define SEGGER_RTT_MAX_INTERRUPT_PRIORITY (0x20)
#endif
#define SEGGER_RTT_LOCK() { \
unsigned int _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = _set_interrupt_priority(SEGGER_RTT_MAX_INTERRUPT_PRIORITY);
#define SEGGER_RTT_UNLOCK() _set_interrupt_priority(_SEGGER_RTT__LockState); \
}
#endif
#endif
/*********************************************************************
*
* RTT lock configuration for CCRX
*/
#ifdef __RX
#include <machine.h>
#define SEGGER_RTT_LOCK() { \
unsigned long _SEGGER_RTT__LockState; \
_SEGGER_RTT__LockState = get_psw() & 0x010000; \
clrpsw_i();
#define SEGGER_RTT_UNLOCK() set_psw(get_psw() | _SEGGER_RTT__LockState); \
}
#endif
/*********************************************************************
*
* RTT lock configuration for embOS Simulation on Windows
* (Can also be used for generic RTT locking with embOS)
*/
#if defined(WIN32) || defined(SEGGER_RTT_LOCK_EMBOS)
void OS_SIM_EnterCriticalSection(void);
void OS_SIM_LeaveCriticalSection(void);
#define SEGGER_RTT_LOCK() { \
OS_SIM_EnterCriticalSection();
#define SEGGER_RTT_UNLOCK() OS_SIM_LeaveCriticalSection(); \
}
#endif
/*********************************************************************
*
* RTT lock configuration fallback
*/
#ifndef SEGGER_RTT_LOCK
#define SEGGER_RTT_LOCK() // Lock RTT (nestable) (i.e. disable interrupts)
#endif
#ifndef SEGGER_RTT_UNLOCK
#define SEGGER_RTT_UNLOCK() // Unlock RTT (nestable) (i.e. enable previous interrupt lock state)
#endif
#endif
/*************************** End of file ****************************/

120
RTT/SEGGER_RTT_Syscalls_GCC.c Normal file
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@ -0,0 +1,120 @@
/*********************************************************************
* SEGGER Microcontroller GmbH *
* The Embedded Experts *
**********************************************************************
* *
* (c) 1995 - 2019 SEGGER Microcontroller GmbH *
* *
* www.segger.com Support: support@segger.com *
* *
**********************************************************************
* *
* SEGGER RTT * Real Time Transfer for embedded targets *
* *
**********************************************************************
* *
* All rights reserved. *
* *
* SEGGER strongly recommends to not make any changes *
* to or modify the source code of this software in order to stay *
* compatible with the RTT protocol and J-Link. *
* *
* Redistribution and use in source and binary forms, with or *
* without modification, are permitted provided that the following *
* condition is met: *
* *
* o Redistributions of source code must retain the above copyright *
* notice, this condition and the following disclaimer. *
* *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
* DAMAGE. *
* *
**********************************************************************
---------------------------END-OF-HEADER------------------------------
File : SEGGER_RTT_Syscalls_GCC.c
Purpose : Low-level functions for using printf() via RTT in GCC.
To use RTT for printf output, include this file in your
application.
Revision: $Rev: 20755 $
----------------------------------------------------------------------
*/
#if (defined __GNUC__) && !(defined __SES_ARM) && !(defined __CROSSWORKS_ARM) && !(defined __ARMCC_VERSION) && !(defined __CC_ARM)
#include <reent.h> // required for _write_r
#include "SEGGER_RTT.h"
/*********************************************************************
*
* Types
*
**********************************************************************
*/
//
// If necessary define the _reent struct
// to match the one passed by the used standard library.
//
struct _reent;
/*********************************************************************
*
* Function prototypes
*
**********************************************************************
*/
_ssize_t _write (int file, const void *ptr, size_t len);
//_ssize_t _write_r(struct _reent *r, int file, const void *ptr, size_t len);
/*********************************************************************
*
* Global functions
*
**********************************************************************
*/
/*********************************************************************
*
* _write()
*
* Function description
* Low-level write function.
* libc subroutines will use this system routine for output to all files,
* including stdout.
* Write data via RTT.
*/
_ssize_t _write(int file, const void *ptr, size_t len) {
(void) file; /* Not used, avoid warning */
SEGGER_RTT_Write(0, ptr, len);
return len;
}
/*********************************************************************
*
* _write_r()
*
* Function description
* Low-level reentrant write function.
* libc subroutines will use this system routine for output to all files,
* including stdout.
* Write data via RTT.
*/
_ssize_t _write_r(struct _reent *r, int file, const void *ptr, size_t len) {
(void) file; /* Not used, avoid warning */
(void) r; /* Not used, avoid warning */
SEGGER_RTT_Write(0, ptr, len);
return len;
}
#endif
/****** End Of File *************************************************/

500
RTT/SEGGER_RTT_printf.c Normal file
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@ -0,0 +1,500 @@
/*********************************************************************
* SEGGER Microcontroller GmbH *
* The Embedded Experts *
**********************************************************************
* *
* (c) 1995 - 2019 SEGGER Microcontroller GmbH *
* *
* www.segger.com Support: support@segger.com *
* *
**********************************************************************
* *
* SEGGER RTT * Real Time Transfer for embedded targets *
* *
**********************************************************************
* *
* All rights reserved. *
* *
* SEGGER strongly recommends to not make any changes *
* to or modify the source code of this software in order to stay *
* compatible with the RTT protocol and J-Link. *
* *
* Redistribution and use in source and binary forms, with or *
* without modification, are permitted provided that the following *
* condition is met: *
* *
* o Redistributions of source code must retain the above copyright *
* notice, this condition and the following disclaimer. *
* *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
* DAMAGE. *
* *
**********************************************************************
---------------------------END-OF-HEADER------------------------------
File : SEGGER_RTT_printf.c
Purpose : Replacement for printf to write formatted data via RTT
Revision: $Rev: 17697 $
----------------------------------------------------------------------
*/
#include "SEGGER_RTT.h"
#include "SEGGER_RTT_Conf.h"
/*********************************************************************
*
* Defines, configurable
*
**********************************************************************
*/
#ifndef SEGGER_RTT_PRINTF_BUFFER_SIZE
#define SEGGER_RTT_PRINTF_BUFFER_SIZE (64)
#endif
#include <stdlib.h>
#include <stdarg.h>
#define FORMAT_FLAG_LEFT_JUSTIFY (1u << 0)
#define FORMAT_FLAG_PAD_ZERO (1u << 1)
#define FORMAT_FLAG_PRINT_SIGN (1u << 2)
#define FORMAT_FLAG_ALTERNATE (1u << 3)
/*********************************************************************
*
* Types
*
**********************************************************************
*/
typedef struct {
char* pBuffer;
unsigned BufferSize;
unsigned Cnt;
int ReturnValue;
unsigned RTTBufferIndex;
} SEGGER_RTT_PRINTF_DESC;
/*********************************************************************
*
* Function prototypes
*
**********************************************************************
*/
/*********************************************************************
*
* Static code
*
**********************************************************************
*/
/*********************************************************************
*
* _StoreChar
*/
static void _StoreChar(SEGGER_RTT_PRINTF_DESC * p, char c) {
unsigned Cnt;
Cnt = p->Cnt;
if ((Cnt + 1u) <= p->BufferSize) {
*(p->pBuffer + Cnt) = c;
p->Cnt = Cnt + 1u;
p->ReturnValue++;
}
//
// Write part of string, when the buffer is full
//
if (p->Cnt == p->BufferSize) {
if (SEGGER_RTT_Write(p->RTTBufferIndex, p->pBuffer, p->Cnt) != p->Cnt) {
p->ReturnValue = -1;
} else {
p->Cnt = 0u;
}
}
}
/*********************************************************************
*
* _PrintUnsigned
*/
static void _PrintUnsigned(SEGGER_RTT_PRINTF_DESC * pBufferDesc, unsigned v, unsigned Base, unsigned NumDigits, unsigned FieldWidth, unsigned FormatFlags) {
static const char _aV2C[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
unsigned Div;
unsigned Digit;
unsigned Number;
unsigned Width;
char c;
Number = v;
Digit = 1u;
//
// Get actual field width
//
Width = 1u;
while (Number >= Base) {
Number = (Number / Base);
Width++;
}
if (NumDigits > Width) {
Width = NumDigits;
}
//
// Print leading chars if necessary
//
if ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u) {
if (FieldWidth != 0u) {
if (((FormatFlags & FORMAT_FLAG_PAD_ZERO) == FORMAT_FLAG_PAD_ZERO) && (NumDigits == 0u)) {
c = '0';
} else {
c = ' ';
}
while ((FieldWidth != 0u) && (Width < FieldWidth)) {
FieldWidth--;
_StoreChar(pBufferDesc, c);
if (pBufferDesc->ReturnValue < 0) {
break;
}
}
}
}
if (pBufferDesc->ReturnValue >= 0) {
//
// Compute Digit.
// Loop until Digit has the value of the highest digit required.
// Example: If the output is 345 (Base 10), loop 2 times until Digit is 100.
//
while (1) {
if (NumDigits > 1u) { // User specified a min number of digits to print? => Make sure we loop at least that often, before checking anything else (> 1 check avoids problems with NumDigits being signed / unsigned)
NumDigits--;
} else {
Div = v / Digit;
if (Div < Base) { // Is our divider big enough to extract the highest digit from value? => Done
break;
}
}
Digit *= Base;
}
//
// Output digits
//
do {
Div = v / Digit;
v -= Div * Digit;
_StoreChar(pBufferDesc, _aV2C[Div]);
if (pBufferDesc->ReturnValue < 0) {
break;
}
Digit /= Base;
} while (Digit);
//
// Print trailing spaces if necessary
//
if ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == FORMAT_FLAG_LEFT_JUSTIFY) {
if (FieldWidth != 0u) {
while ((FieldWidth != 0u) && (Width < FieldWidth)) {
FieldWidth--;
_StoreChar(pBufferDesc, ' ');
if (pBufferDesc->ReturnValue < 0) {
break;
}
}
}
}
}
}
/*********************************************************************
*
* _PrintInt
*/
static void _PrintInt(SEGGER_RTT_PRINTF_DESC * pBufferDesc, int v, unsigned Base, unsigned NumDigits, unsigned FieldWidth, unsigned FormatFlags) {
unsigned Width;
int Number;
Number = (v < 0) ? -v : v;
//
// Get actual field width
//
Width = 1u;
while (Number >= (int)Base) {
Number = (Number / (int)Base);
Width++;
}
if (NumDigits > Width) {
Width = NumDigits;
}
if ((FieldWidth > 0u) && ((v < 0) || ((FormatFlags & FORMAT_FLAG_PRINT_SIGN) == FORMAT_FLAG_PRINT_SIGN))) {
FieldWidth--;
}
//
// Print leading spaces if necessary
//
if ((((FormatFlags & FORMAT_FLAG_PAD_ZERO) == 0u) || (NumDigits != 0u)) && ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u)) {
if (FieldWidth != 0u) {
while ((FieldWidth != 0u) && (Width < FieldWidth)) {
FieldWidth--;
_StoreChar(pBufferDesc, ' ');
if (pBufferDesc->ReturnValue < 0) {
break;
}
}
}
}
//
// Print sign if necessary
//
if (pBufferDesc->ReturnValue >= 0) {
if (v < 0) {
v = -v;
_StoreChar(pBufferDesc, '-');
} else if ((FormatFlags & FORMAT_FLAG_PRINT_SIGN) == FORMAT_FLAG_PRINT_SIGN) {
_StoreChar(pBufferDesc, '+');
} else {
}
if (pBufferDesc->ReturnValue >= 0) {
//
// Print leading zeros if necessary
//
if (((FormatFlags & FORMAT_FLAG_PAD_ZERO) == FORMAT_FLAG_PAD_ZERO) && ((FormatFlags & FORMAT_FLAG_LEFT_JUSTIFY) == 0u) && (NumDigits == 0u)) {
if (FieldWidth != 0u) {
while ((FieldWidth != 0u) && (Width < FieldWidth)) {
FieldWidth--;
_StoreChar(pBufferDesc, '0');
if (pBufferDesc->ReturnValue < 0) {
break;
}
}
}
}
if (pBufferDesc->ReturnValue >= 0) {
//
// Print number without sign
//
_PrintUnsigned(pBufferDesc, (unsigned)v, Base, NumDigits, FieldWidth, FormatFlags);
}
}
}
}
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* SEGGER_RTT_vprintf
*
* Function description
* Stores a formatted string in SEGGER RTT control block.
* This data is read by the host.
*
* Parameters
* BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal")
* sFormat Pointer to format string
* pParamList Pointer to the list of arguments for the format string
*
* Return values
* >= 0: Number of bytes which have been stored in the "Up"-buffer.
* < 0: Error
*/
int SEGGER_RTT_vprintf(unsigned BufferIndex, const char * sFormat, va_list * pParamList) {
char c;
SEGGER_RTT_PRINTF_DESC BufferDesc;
int v;
unsigned NumDigits;
unsigned FormatFlags;
unsigned FieldWidth;
char acBuffer[SEGGER_RTT_PRINTF_BUFFER_SIZE];
BufferDesc.pBuffer = acBuffer;
BufferDesc.BufferSize = SEGGER_RTT_PRINTF_BUFFER_SIZE;
BufferDesc.Cnt = 0u;
BufferDesc.RTTBufferIndex = BufferIndex;
BufferDesc.ReturnValue = 0;
do {
c = *sFormat;
sFormat++;
if (c == 0u) {
break;
}
if (c == '%') {
//
// Filter out flags
//
FormatFlags = 0u;
v = 1;
do {
c = *sFormat;
switch (c) {
case '-': FormatFlags |= FORMAT_FLAG_LEFT_JUSTIFY; sFormat++; break;
case '0': FormatFlags |= FORMAT_FLAG_PAD_ZERO; sFormat++; break;
case '+': FormatFlags |= FORMAT_FLAG_PRINT_SIGN; sFormat++; break;
case '#': FormatFlags |= FORMAT_FLAG_ALTERNATE; sFormat++; break;
default: v = 0; break;
}
} while (v);
//
// filter out field with
//
FieldWidth = 0u;
do {
c = *sFormat;
if ((c < '0') || (c > '9')) {
break;
}
sFormat++;
FieldWidth = (FieldWidth * 10u) + ((unsigned)c - '0');
} while (1);
//
// Filter out precision (number of digits to display)
//
NumDigits = 0u;
c = *sFormat;
if (c == '.') {
sFormat++;
do {
c = *sFormat;
if ((c < '0') || (c > '9')) {
break;
}
sFormat++;
NumDigits = NumDigits * 10u + ((unsigned)c - '0');
} while (1);
}
//
// Filter out length modifier
//
c = *sFormat;
do {
if ((c == 'l') || (c == 'h')) {
sFormat++;
c = *sFormat;
} else {
break;
}
} while (1);
//
// Handle specifiers
//
switch (c) {
case 'c': {
char c0;
v = va_arg(*pParamList, int);
c0 = (char)v;
_StoreChar(&BufferDesc, c0);
break;
}
case 'd':
v = va_arg(*pParamList, int);
_PrintInt(&BufferDesc, v, 10u, NumDigits, FieldWidth, FormatFlags);
break;
case 'u':
v = va_arg(*pParamList, int);
_PrintUnsigned(&BufferDesc, (unsigned)v, 10u, NumDigits, FieldWidth, FormatFlags);
break;
case 'x':
case 'X':
v = va_arg(*pParamList, int);
_PrintUnsigned(&BufferDesc, (unsigned)v, 16u, NumDigits, FieldWidth, FormatFlags);
break;
case 's':
{
const char * s = va_arg(*pParamList, const char *);
do {
c = *s;
s++;
if (c == '\0') {
break;
}
_StoreChar(&BufferDesc, c);
} while (BufferDesc.ReturnValue >= 0);
}
break;
case 'p':
v = va_arg(*pParamList, int);
_PrintUnsigned(&BufferDesc, (unsigned)v, 16u, 8u, 8u, 0u);
break;
case '%':
_StoreChar(&BufferDesc, '%');
break;
default:
break;
}
sFormat++;
} else {
_StoreChar(&BufferDesc, c);
}
} while (BufferDesc.ReturnValue >= 0);
if (BufferDesc.ReturnValue > 0) {
//
// Write remaining data, if any
//
if (BufferDesc.Cnt != 0u) {
SEGGER_RTT_Write(BufferIndex, acBuffer, BufferDesc.Cnt);
}
BufferDesc.ReturnValue += (int)BufferDesc.Cnt;
}
return BufferDesc.ReturnValue;
}
/*********************************************************************
*
* SEGGER_RTT_printf
*
* Function description
* Stores a formatted string in SEGGER RTT control block.
* This data is read by the host.
*
* Parameters
* BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal")
* sFormat Pointer to format string, followed by the arguments for conversion
*
* Return values
* >= 0: Number of bytes which have been stored in the "Up"-buffer.
* < 0: Error
*
* Notes
* (1) Conversion specifications have following syntax:
* %[flags][FieldWidth][.Precision]ConversionSpecifier
* (2) Supported flags:
* -: Left justify within the field width
* +: Always print sign extension for signed conversions
* 0: Pad with 0 instead of spaces. Ignored when using '-'-flag or precision
* Supported conversion specifiers:
* c: Print the argument as one char
* d: Print the argument as a signed integer
* u: Print the argument as an unsigned integer
* x: Print the argument as an hexadecimal integer
* s: Print the string pointed to by the argument
* p: Print the argument as an 8-digit hexadecimal integer. (Argument shall be a pointer to void.)
*/
int SEGGER_RTT_printf(unsigned BufferIndex, const char * sFormat, ...) {
int r;
va_list ParamList;
va_start(ParamList, sFormat);
r = SEGGER_RTT_vprintf(BufferIndex, sFormat, &ParamList);
va_end(ParamList);
return r;
}
/*************************** End of file ****************************/

BIN
datasheets/pm0214-stm32-cortexm4-mcus-and-mpus-programming-manual-stmicroelectronics.pdf Normal file
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datasheets/rm0368-stm32f401xbc-and-stm32f401xde-advanced-armbased-32bit-mcus-stmicroelectronics.pdf Normal file
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datasheets/stm32f401re.pdf Normal file
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datasheets/um1724-stm32-nucleo64-boards-mb1136-stmicroelectronics.pdf Normal file
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69
generated.STM32F401RET6.ld Normal file
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EXTERN(vector_table)
ENTRY(reset_handler)
MEMORY
{
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
rom (rx) : ORIGIN = 0x08000000, LENGTH = 512K
}
SECTIONS
{
.text : {
*(.vectors)
*(.text*)
. = ALIGN(4);
*(.rodata*)
. = ALIGN(4);
} >rom
.preinit_array : {
. = ALIGN(4);
__preinit_array_start = .;
KEEP (*(.preinit_array))
__preinit_array_end = .;
} >rom
.init_array : {
. = ALIGN(4);
__init_array_start = .;
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
__init_array_end = .;
} >rom
.fini_array : {
. = ALIGN(4);
__fini_array_start = .;
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
__fini_array_end = .;
} >rom
.ARM.extab : {
*(.ARM.extab*)
} >rom
.ARM.exidx : {
__exidx_start = .;
*(.ARM.exidx*)
__exidx_end = .;
} >rom
. = ALIGN(4);
_etext = .;
.noinit (NOLOAD) : {
*(.noinit*)
} >ram
. = ALIGN(4);
.data : {
_data = .;
*(.data*)
*(.ramtext*)
. = ALIGN(4);
_edata = .;
} >ram AT >rom
_data_loadaddr = LOADADDR(.data);
.bss : {
*(.bss*)
*(COMMON)
. = ALIGN(4);
_ebss = .;
} >ram
/DISCARD/ : { *(.eh_frame) }
. = ALIGN(4);
end = .;
}
PROVIDE(_stack = ORIGIN(ram) + LENGTH(ram));

37
openocd/ftdi.cfg Normal file
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# FT2232H Board V3 connected to Maple Mini
adapter driver ftdi
transport select swd
ftdi_vid_pid 0x0403 0x6010
# ftdi_device_desc "USB Serial Converter A"
# ftdi_device_desc "FT2232H ¿ª·¢°å"
# ftdi_serial "FTZ7O8O0"
ftdi_channel 1
#adapter_khz 500
#adapter_khz 8
ftdi_layout_init 0x0018 0x05fb
ftdi_layout_signal SWD_EN -data 0
#ftdi_layout_signal nSRST -data 0x0020
ftdi_layout_signal nTRST -ndata 0x0010 -noe 0x0040
ftdi_layout_signal nSRST -ndata 0x0020 -noe 0x0040
source [find target/stm32f1x.cfg]
reset_config srst_only
# Search for RTT string from start of RAM
rtt setup 0x20000000 8192 "SEGGER RTT"
rtt server start 9090 0
# $_TARGETNAME configure -event resume-end {
# #rtt start
# }
$_TARGETNAME configure -event gdb-start {
rtt start
}
$_TARGETNAME configure -event halted {
rtt stop
}

21
openocd/stlink.cfg Normal file
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# ST-Link v2 clone connected to Maple Mini board
source [find interface/stlink.cfg]
source [find target/stm32f4x.cfg]
reset_config combined
# Search for RTT string from start of RAM
rtt setup 0x20000000 8192 "SEGGER RTT"
rtt server start 9090 0
# $_TARGETNAME configure -event resume-end {
# #rtt start
# }
$_TARGETNAME configure -event gdb-start {
rtt start
}
$_TARGETNAME configure -event halted {
rtt stop
}

19
print_vars.mk Normal file
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PROJECT=auto
DEVICE=STM32F401RET6
OPENCM3_DIR=libopencm3
print_genlink_vars:
@echo LDSCRIPT=$(LDSCRIPT)
@echo LDFLAGS=$(LDFLAGS)
@echo LIBDEPS=$(LIBDEPS)
@echo ARCH_FLAGS=$(ARCH_FLAGS)
@echo TGT_CFLAGS=$(TGT_CFLAGS)
@echo TGT_LDFLAGS=$(TGT_LDFLAGS)
@echo LDLIBS=$(LDLIBS)
include $(OPENCM3_DIR)/mk/genlink-config.mk
include rules.mk
include $(OPENCM3_DIR)/mk/genlink-rules.mk

176
rules.mk Normal file
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# This version of rules.mk expects the following to be defined before
# inclusion..
### REQUIRED ###
# OPENCM3_DIR - duh
# PROJECT - will be the basename of the output elf, eg usb-gadget0-stm32f4disco
# CFILES - basenames only, eg main.c blah.c
# CXXFILES - same for C++ files. Must have cxx suffix!
# DEVICE - the full device name, eg stm32f405ret6
# _or_
# LDSCRIPT - full path, eg ../../examples/stm32/f4/stm32f4-discovery/stm32f4-discovery.ld
# OPENCM3_LIB - the basename, eg: opencm3_stm32f4
# OPENCM3_DEFS - the target define eg: -DSTM32F4
# ARCH_FLAGS - eg, -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
# (ie, the full set of cpu arch flags, _none_ are defined in this file)
#
### OPTIONAL ###
# INCLUDES - fully formed -I paths, if you want extra, eg -I../shared
# BUILD_DIR - defaults to bin, should set this if you are building multiarch
# OPT - full -O flag, defaults to -Os
# CSTD - defaults -std=c99
# CXXSTD - no default.
# OOCD_INTERFACE - eg stlink-v2
# OOCD_TARGET - eg stm32f4x
# both only used if you use the "make flash" target.
# OOCD_FILE - eg my.openocd.cfg
# This overrides interface/target above, and is used as just -f FILE
### TODO/FIXME/notes ###
# No support for stylecheck.
# No support for BMP/texane/random flash methods, no plans either
# No support for magically finding the library.
# C++ hasn't been actually tested with this..... sorry bout that. ;)
# Second expansion/secondary not set, add this if you need them.
BUILD_DIR ?= bin
OPT ?= -Os
CSTD ?= -std=c99
# Be silent per default, but 'make V=1' will show all compiler calls.
# If you're insane, V=99 will print out all sorts of things.
V?=0
ifeq ($(V),0)
Q := @
NULL := 2>/dev/null
endif
# Tool paths.
PREFIX ?= arm-none-eabi-
CC = $(PREFIX)gcc
CXX = $(PREFIX)g++
LD = $(PREFIX)gcc
OBJCOPY = $(PREFIX)objcopy
OBJDUMP = $(PREFIX)objdump
OOCD ?= openocd
OPENCM3_INC = $(OPENCM3_DIR)/include
# Inclusion of library header files
INCLUDES += $(patsubst %,-I%, . $(OPENCM3_INC) )
OBJS = $(CFILES:%.c=$(BUILD_DIR)/%.o)
OBJS += $(CXXFILES:%.cxx=$(BUILD_DIR)/%.o)
OBJS += $(AFILES:%.S=$(BUILD_DIR)/%.o)
GENERATED_BINS = $(PROJECT).elf $(PROJECT).bin $(PROJECT).map $(PROJECT).list $(PROJECT).lss
TGT_CPPFLAGS += -MD
TGT_CPPFLAGS += -Wall -Wundef $(INCLUDES)
TGT_CPPFLAGS += $(INCLUDES) $(OPENCM3_DEFS)
TGT_CFLAGS += $(OPT) $(CSTD) -ggdb3
TGT_CFLAGS += $(ARCH_FLAGS)
TGT_CFLAGS += -fno-common
TGT_CFLAGS += -ffunction-sections -fdata-sections
TGT_CFLAGS += -Wextra -Wshadow -Wno-unused-variable -Wimplicit-function-declaration
TGT_CFLAGS += -Wredundant-decls -Wstrict-prototypes -Wmissing-prototypes
TGT_CXXFLAGS += $(OPT) $(CXXSTD) -ggdb3
TGT_CXXFLAGS += $(ARCH_FLAGS)
TGT_CXXFLAGS += -fno-common
TGT_CXXFLAGS += -ffunction-sections -fdata-sections
TGT_CXXFLAGS += -Wextra -Wshadow -Wredundant-decls -Weffc++
TGT_ASFLAGS += $(OPT) $(ARCH_FLAGS) -ggdb3
TGT_LDFLAGS += -T$(LDSCRIPT) -L$(OPENCM3_DIR)/lib -nostartfiles
TGT_LDFLAGS += $(ARCH_FLAGS)
TGT_LDFLAGS += -specs=nano.specs
TGT_LDFLAGS += -Wl,--gc-sections
# OPTIONAL
TGT_LDFLAGS += -Wl,-Map=$(PROJECT).map
ifeq ($(V),99)
TGT_LDFLAGS += -Wl,--print-gc-sections
endif
# Linker script generator fills this in for us.
ifeq (,$(DEVICE))
LDLIBS += -l$(OPENCM3_LIB)
endif
# nosys is only in newer gcc-arm-embedded...
#LDLIBS += -specs=nosys.specs
LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
# Burn in legacy hell fortran modula pascal yacc idontevenwat
.SUFFIXES:
.SUFFIXES: .c .S .h .o .cxx .elf .bin .list .lss
# Bad make, never *ever* try to get a file out of source control by yourself.
%: %,v
%: RCS/%,v
%: RCS/%
%: s.%
%: SCCS/s.%
all: $(PROJECT).elf $(PROJECT).bin
flash: $(PROJECT).flash
# error if not using linker script generator
ifeq (,$(DEVICE))
$(LDSCRIPT):
ifeq (,$(wildcard $(LDSCRIPT)))
$(error Unable to find specified linker script: $(LDSCRIPT))
endif
else
# if linker script generator was used, make sure it's cleaned.
GENERATED_BINS += $(LDSCRIPT)
endif
# Need a special rule to have a bin dir
$(BUILD_DIR)/%.o: %.c
@printf " CC\t$<\n"
@mkdir -p $(dir $@)
$(Q)$(CC) $(TGT_CFLAGS) $(CFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
$(BUILD_DIR)/%.o: %.cxx
@printf " CXX\t$<\n"
@mkdir -p $(dir $@)
$(Q)$(CXX) $(TGT_CXXFLAGS) $(CXXFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
$(BUILD_DIR)/%.o: %.S
@printf " AS\t$<\n"
@mkdir -p $(dir $@)
$(Q)$(CC) $(TGT_ASFLAGS) $(ASFLAGS) $(TGT_CPPFLAGS) $(CPPFLAGS) -o $@ -c $<
$(PROJECT).elf: $(OBJS) $(LDSCRIPT) $(LIBDEPS)
@printf " LD\t$@\n"
$(Q)$(LD) $(TGT_LDFLAGS) $(LDFLAGS) $(OBJS) $(LDLIBS) -o $@
%.bin: %.elf
@printf " OBJCOPY\t$@\n"
$(Q)$(OBJCOPY) -O binary $< $@
%.lss: %.elf
$(OBJDUMP) -h -S $< > $@
%.list: %.elf
$(OBJDUMP) -S $< > $@
%.flash: %.elf
@printf " FLASH\t$<\n"
ifeq (,$(OOCD_FILE))
$(Q)(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \
$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
-f target/$(OOCD_TARGET).cfg \
-c "program $(realpath $(*).elf) verify reset exit" \
$(NULL)
else
$(Q)(echo "halt; program $(realpath $(*).elf) verify reset" | nc -4 localhost 4444 2>/dev/null) || \
$(OOCD) -f $(OOCD_FILE) \
-c "program $(realpath $(*).elf) verify reset exit" \
$(NULL)
endif
clean:
rm -rf $(BUILD_DIR) $(GENERATED_BINS)
.PHONY: all clean flash
-include $(OBJS:.o=.d)

100
src/main.c Normal file
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#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <stdint.h>
#include "SEGGER_RTT.h"
#define PWMA_PORT GPIOC
#define PWMA_PIN GPIO8
#define AIN1_PORT GPIOB
#define AIN1_PIN GPIO8
#define AIN2_PORT GPIOB
#define AIN2_PIN GPIO9
#define PWMB_PORT GPIOC
#define PWMB_PIN GPIO9
#define BIN1_PORT GPIOC
#define BIN1_PIN GPIO6
#define BIN2_PORT GPIOC
#define BIN2_PIN GPIO5
static void gpio_setup(void) {
rcc_periph_clock_enable(RCC_GPIOA);
rcc_periph_clock_enable(RCC_GPIOB);
rcc_periph_clock_enable(RCC_GPIOC);
// LED LD2
gpio_mode_setup(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO5);
// USER Button B1
gpio_mode_setup(GPIOC, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO13);
// PWMA
gpio_mode_setup(PWMA_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, PWMA_PIN);
// AIN1
gpio_mode_setup(AIN1_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, AIN1_PIN);
// AIN2
gpio_mode_setup(AIN2_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, AIN2_PIN);
// PWMB
gpio_mode_setup(PWMB_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, PWMB_PIN);
// BIN1
gpio_mode_setup(BIN1_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, BIN1_PIN);
// BIN2
gpio_mode_setup(BIN2_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, BIN2_PIN);
}
typedef enum {
MOTOR_BRAKE,
MOTOR_CCW,
MOTOR_CW,
MOTOR_STOP,
} motor_state_t;
static void drive_b(motor_state_t state) {
switch (state) {
case MOTOR_BRAKE:
gpio_set(PWMB_PORT, PWMB_PIN);
gpio_set(BIN1_PORT, BIN1_PIN);
gpio_set(BIN2_PORT, BIN2_PIN);
break;
case MOTOR_CCW:
gpio_set(PWMB_PORT, PWMB_PIN);
gpio_clear(BIN1_PORT, BIN1_PIN);
gpio_set(BIN2_PORT, BIN2_PIN);
break;
case MOTOR_CW:
gpio_set(PWMB_PORT, PWMB_PIN);
gpio_set(BIN1_PORT, BIN1_PIN);
gpio_clear(BIN2_PORT, BIN2_PIN);
case MOTOR_STOP:
gpio_set(PWMB_PORT, PWMB_PIN);
gpio_clear(BIN1_PORT, BIN1_PIN);
gpio_clear(BIN2_PORT, BIN2_PIN);
}
}
int main(void) {
SEGGER_RTT_printf(0, "Startup\n");
rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_84MHZ]);
gpio_setup();
while (1) {
if (gpio_get(GPIOC, GPIO13)) {
gpio_toggle(GPIOA, GPIO5);
drive_b(MOTOR_STOP);
SEGGER_RTT_printf(0, "BRAKE\n");
} else {
drive_b(MOTOR_CCW);
SEGGER_RTT_printf(0, "DRIVE\n");
}
for (int i = 0; i < 100000; i++) { /* Wait a bit. */
__asm__("nop");
}
}
}

42
toolchain-STM32F4.cmake Normal file
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@ -0,0 +1,42 @@
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_VERSION Cortex-M4-STM32F4)
set(CMAKE_C_COMPILER arm-none-eabi-gcc)
set(CMAKE_CXX_COMPILER arm-none-eabi-g++)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
set(ARM_OPTIONS -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16)
add_compile_options(
${ARM_OPTIONS}
-ffunction-sections
-fdata-sections
-MMD
-MP
)
add_compile_options(-fdiagnostics-color=always)
add_link_options(
${ARM_OPTIONS}
-specs=nano.specs
-specs=nosys.specs # puts does not work.....
#-specs=rdimon.specs
LINKER:-lc
LINKER:-lgcc
LINKER:-lnosys
#-specs=nano.specs
#-u_printf_float
#-u_scanf_float
-nostartfiles
#-Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
LINKER:--gc-sections
LINKER:--build-id
LINKER:-Map=${CMAKE_PROJECT_NAME}.map
-T${CMAKE_SOURCE_DIR}/generated.STM32F401RET6.ld
)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)