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Replace DCC printf logging with SEGGER RTT

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It turns out that RTT also works with OpenOCD starting from v0.11
This commit is contained in:
Arti Zirk 2021-06-27 18:32:43 +03:00
parent b7d241746c
commit 826084b927
12 changed files with 3557 additions and 281 deletions
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10
Makefile
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@ -2,19 +2,19 @@ V=1
DEBUG=1 DEBUG=1
PROJECT = dht_test PROJECT = dht_test
BUILD_DIR = bin BUILD_DIR = bin
OPT=-O0
#SHARED_DIR = ../my-common-code #SHARED_DIR = ../my-common-code
CFILES = main.c CFILES = main.c
#AFILES += api-asm.S #AFILES += api-asm.S
# TODO - you will need to edit these two lines!
DEVICE=STM32F103C8T6 DEVICE=STM32F103C8T6
OOCD_FILE=openocd.cfg OOCD_FILE=openocd.cfg
# Send debug messages via OpenOCD DCC support # Send debug messages via SEGGER RTT
CFILES += dcc_stdio.c CFILES += SEGGER_RTT.c SEGGER_RTT_printf.c SEGGER_RTT_Syscalls_GCC.c
VPATH += libdcc VPATH += RTT
INCLUDES += $(patsubst %,-I%, . libdcc) INCLUDES += $(patsubst %,-I%, . RTT)
# You shouldn't have to edit anything below here. # You shouldn't have to edit anything below here.

2073
RTT/SEGGER_RTT.c Normal file
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414
RTT/SEGGER_RTT.h Normal file
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@ -0,0 +1,414 @@
/*********************************************************************
* 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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@ -0,0 +1,424 @@
/*********************************************************************
* 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 (3) // 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 (3) // 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 ****************************/

18
libdcc/README
View File

@ -1,18 +0,0 @@
This code is an example of using the openocd debug message system.
Before the message output is seen in the debug window, the functionality
will need enabling:
From the gdb prompt:
monitor target_request debugmsgs enable
monitor trace point 1
From the Telnet prompt:
target_request debugmsgs enable
trace point 1
To see how many times the trace point was hit:
(monitor) trace point 1
Spen
spen@spen-soft.co.uk

155
libdcc/dcc_stdio.c
View File

@ -1,155 +0,0 @@
/***************************************************************************
* Copyright (C) 2008 by Dominic Rath *
* Dominic.Rath@gmx.de *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* Copyright (C) 2008 by Frederik Kriewtz *
* frederik@kriewitz.eu *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include "dcc_stdio.h"
#define TARGET_REQ_TRACEMSG 0x00
#define TARGET_REQ_DEBUGMSG_ASCII 0x01
#define TARGET_REQ_DEBUGMSG_HEXMSG(size) (0x01 | ((size & 0xff) << 8))
#define TARGET_REQ_DEBUGCHAR 0x02
#if defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_6SM__)
/* we use the System Control Block DCRDR reg to simulate a arm7_9 dcc channel
* DCRDR[7:0] is used by target for status
* DCRDR[15:8] is used by target for write buffer
* DCRDR[23:16] is used for by host for status
* DCRDR[31:24] is used for by host for write buffer */
#define NVIC_DBG_DATA_R (*((volatile unsigned short *)0xE000EDF8))
#define BUSY 1
void dbg_write(unsigned long dcc_data)
{
int len = 4;
while (len--)
{
/* wait for data ready */
while (NVIC_DBG_DATA_R & BUSY);
/* write our data and set write flag - tell host there is data*/
NVIC_DBG_DATA_R = (unsigned short)(((dcc_data & 0xff) << 8) | BUSY);
dcc_data >>= 8;
}
}
#elif defined(__ARM_ARCH_4T__) || defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_5T__)
void dbg_write(unsigned long dcc_data)
{
unsigned long dcc_status;
do {
asm volatile("mrc p14, 0, %0, c0, c0" : "=r" (dcc_status));
} while (dcc_status & 0x2);
asm volatile("mcr p14, 0, %0, c1, c0" : : "r" (dcc_data));
}
#else
#error unsupported target
#endif
void dbg_trace_point(unsigned long number)
{
dbg_write(TARGET_REQ_TRACEMSG | (number << 8));
}
void dbg_write_u32(const unsigned long *val, long len)
{
dbg_write(TARGET_REQ_DEBUGMSG_HEXMSG(4) | ((len & 0xffff) << 16));
while (len > 0)
{
dbg_write(*val);
val++;
len--;
}
}
void dbg_write_u16(const unsigned short *val, long len)
{
unsigned long dcc_data;
dbg_write(TARGET_REQ_DEBUGMSG_HEXMSG(2) | ((len & 0xffff) << 16));
while (len > 0)
{
dcc_data = val[0]
| ((len > 1) ? val[1] << 16: 0x0000);
dbg_write(dcc_data);
val += 2;
len -= 2;
}
}
void dbg_write_u8(const unsigned char *val, long len)
{
unsigned long dcc_data;
dbg_write(TARGET_REQ_DEBUGMSG_HEXMSG(1) | ((len & 0xffff) << 16));
while (len > 0)
{
dcc_data = val[0]
| ((len > 1) ? val[1] << 8 : 0x00)
| ((len > 2) ? val[2] << 16 : 0x00)
| ((len > 3) ? val[3] << 24 : 0x00);
dbg_write(dcc_data);
val += 4;
len -= 4;
}
}
void dbg_write_str(const char *msg)
{
long len;
unsigned long dcc_data;
for (len = 0; msg[len] && (len < 65536); len++);
dbg_write(TARGET_REQ_DEBUGMSG_ASCII | ((len & 0xffff) << 16));
while (len > 0)
{
dcc_data = msg[0]
| ((len > 1) ? msg[1] << 8 : 0x00)
| ((len > 2) ? msg[2] << 16 : 0x00)
| ((len > 3) ? msg[3] << 24 : 0x00);
dbg_write(dcc_data);
msg += 4;
len -= 4;
}
}
void dbg_write_char(char msg)
{
dbg_write(TARGET_REQ_DEBUGCHAR | ((msg & 0xff) << 16));
}

35
libdcc/dcc_stdio.h
View File

@ -1,35 +0,0 @@
/***************************************************************************
* Copyright (C) 2008 by Dominic Rath *
* Dominic.Rath@gmx.de *
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifndef DCC_STDIO_H
#define DCC_STDIO_H
void dbg_write(unsigned long dcc_data);
void dbg_trace_point(unsigned long number);
void dbg_write_u32(const unsigned long *val, long len);
void dbg_write_u16(const unsigned short *val, long len);
void dbg_write_u8(const unsigned char *val, long len);
void dbg_write_str(const char *msg);
void dbg_write_char(char msg);
#endif /* DCC_STDIO_H */

56
libdcc/example.c
View File

@ -1,56 +0,0 @@
/***************************************************************************
* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* Copyright (C) 2008 by Frederik Kriewtz *
* frederik@kriewitz.eu *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include "dcc_stdio.h"
/* enable openocd debugmsg at the gdb prompt:
* monitor target_request debugmsgs enable
*
* create a trace point:
* monitor trace point 1
*
* to show how often the trace point was hit:
* monitor trace point
*/
int main(void)
{
dbg_write_str("hello world");
dbg_write_char('t');
dbg_write_char('e');
dbg_write_char('s');
dbg_write_char('t');
dbg_write_char('\n');
unsigned long test_u32 = 0x01234567;
dbg_write_u32(&test_u32, 1);
static const unsigned short test_u16[] = {0x0123, 0x4567, 0x89AB, 0xCDEF, 0x0123, 0x4567, 0x89AB, 0xCDEF};
dbg_write_u16(test_u16, 8);
static const unsigned char test_u8[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0XDD, 0xEE, 0xFF};
dbg_write_u8(test_u8, 16);
while(1)
{
dbg_trace_point(0);
}
}

16
main.c
View File

@ -22,7 +22,7 @@
#include <libopencm3/stm32/gpio.h> #include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/timer.h> #include <libopencm3/stm32/timer.h>
#include <dcc_stdio.h> #include <SEGGER_RTT.h>
static void delay(int count) static void delay(int count)
{ {
@ -138,27 +138,23 @@ static void dht_start_signal(void)
gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, GPIO0); gpio_set_mode(GPIOB, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, GPIO0);
} }
volatile int bla=0;
void hard_fault_handler(void) {
__asm("bkpt 1");
}
int main(void) int main(void)
{ {
int i = 0;
SEGGER_RTT_printf(0, "Start\n");
rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]); rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]);
gpio_setup(); gpio_setup();
//tim_setup(); //tim_setup();
dbg_write_str("hello\n");
/* Blink the LED (PA5) on the board. */ /* Blink the LED (PA5) on the board. */
while (1) { while (1) {
/* Using API function gpio_toggle(): */ /* Using API function gpio_toggle(): */
gpio_toggle(GPIOB, GPIO1); /* LED on/off */ gpio_toggle(GPIOB, GPIO1); /* LED on/off */
delay(4000000); delay(4000000);
//dht_start_signal(); //dht_start_signal();
dbg_write_str("hello2\n");
i++;
SEGGER_RTT_printf(0, "hello: %d\n", i);
} }
return 0; return 0;

17
openocd.cfg
View File

@ -22,5 +22,18 @@ source [find target/stm32f1x.cfg]
reset_config srst_only reset_config srst_only
#poll on rtt setup 0x20000000 8192 "SEGGER RTT"
#target_request debugmsgs enable 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
}