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git subrepo clone https://github.com/libopencm3/libopencm3.git

Browse Source 
subrepo:
  subdir:   "libopencm3"
  merged:   "88e91c9a7cce"
upstream:
  origin:   "https://github.com/libopencm3/libopencm3.git"
  branch:   "master"
  commit:   "88e91c9a7cce"
git-subrepo:
  version:  "0.4.3"
  origin:   "???"
  commit:   "???"
This commit is contained in:
Arti Zirk
2023-01-21 21:54:42 +02:00
parent f01f2a30fa
commit 054740c5de
1205 changed files with 191912 additions and 0 deletions
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45
libopencm3/lib/lm3s/Makefile Normal file
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##
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This library 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 Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with this library. If not, see <http://www.gnu.org/licenses/>.
##
LIBNAME = libopencm3_lm3s
SRCLIBDIR ?= ..
CC = $(PREFIX)gcc
AR = $(PREFIX)ar
TGT_CFLAGS = -Os \
-Wall -Wextra -Wimplicit-function-declaration \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I../../include -fno-common \
-mcpu=cortex-m3 -mthumb $(FP_FLAGS) -Wstrict-prototypes \
-ffunction-sections -fdata-sections -MD -DLM3S
TGT_CFLAGS += $(DEBUG_FLAGS)
TGT_CFLAGS += $(STANDARD_FLAGS)
# ARFLAGS = rcsv
ARFLAGS = rcs
OBJS += assert.o
OBJS += gpio.o
OBJS += rcc.o
OBJS += usart.o
OBJS += vector.o
VPATH += ../cm3
include ../Makefile.include

52
libopencm3/lib/lm3s/gpio.c Normal file
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/** @defgroup gpio_file General Purpose I/O
@brief <b>LM3S General Purpose I/O</b>
@ingroup LM3Sxx
@version 1.0.0
@author @htmlonly &copy; @endhtmlonly 2011
Gareth McMullin <gareth@blacksphere.co.nz>
@date 10 March 2013
LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2011 Gareth McMullin <gareth@blacksphere.co.nz>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/**@{*/
#include <libopencm3/lm3s/gpio.h>
void gpio_set(uint32_t gpioport, uint8_t gpios)
{
/* ipaddr[9:2] mask the bits to be set, hence the array index */
GPIO_DATA(gpioport)[gpios] = 0xff;
}
void gpio_clear(uint32_t gpioport, uint8_t gpios)
{
GPIO_DATA(gpioport)[gpios] = 0;
}
/**@}*/

77
libopencm3/lib/lm3s/rcc.c Normal file
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/** @defgroup rcc_file RCC Controller
@brief <b>LM3S RCC Controller</b>
@ingroup LM3Sxx
@version 1.0.0
@author @htmlonly &copy; @endhtmlonly 2015
Daniele Lacamera \<root at danielinux dot net\>
@date 21 November 2015
LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2015 Daniele Lacamera <root@danielinux.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <libopencm3/lm3s/rcc.h>
#include <libopencm3/cm3/sync.h>
int rcc_clock_setup_in_xtal_8mhz_out_50mhz(void)
{
uint32_t rcc = RCC_RESET_VALUE;
uint32_t rcc2 = RCC2_RESET_VALUE;
/* Stage 0: Reset values applied */
RCC_CR = rcc;
RCC2_CR = rcc2;
__dmb();
/* Stage 1: Reset Oscillators and select configured values */
RCC_CR = RCC_SYSDIV_50MHZ | RCC_PWMDIV_64 | RCC_XTAL_8MHZ_400MHZ | RCC_USEPWMDIV;
RCC2_CR = (4 - 1) << RCC2_SYSDIV2_SHIFT;
__dmb();
/* Stage 2: Power on oscillators */
rcc &= ~RCC_OFF;
rcc2 &= ~RCC2_OFF;
RCC_CR = rcc;
RCC2_CR = rcc2;
__dmb();
/* Stage 3: Set USESYSDIV */
rcc |= RCC_BYPASS | RCC_USESYSDIV;
RCC_CR = rcc;
__dmb();
/* Stage 4: Wait for PLL raw interrupt */
while ((RCC_RIS & RIS_PLLLRIS) == 0)
;
/* Stage 5: Disable bypass */
rcc &= ~RCC_BYPASS;
rcc2 &= ~RCC2_BYPASS;
RCC_CR = rcc;
RCC2_CR = rcc2;
__dmb();
return 0;
}

88
libopencm3/lib/lm3s/usart.c Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
* Copyright (C) 2015 Daniele Lacamera <root at danielinux.net>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/lm3s/usart.h>
void usart_send(uint32_t usart, uint16_t data)
{
USART_DR(usart) = data;
}
uint16_t usart_recv(uint32_t usart)
{
return USART_DR(usart) & 0xff;
}
void usart_send_blocking(uint32_t usart, uint16_t data)
{
while (!usart_is_send_ready(usart));
usart_send(usart, data);
}
bool usart_is_recv_ready(uint32_t usart)
{
return ((USART_FR(usart) & USART_FR_RXFE) == 0);
}
bool usart_is_send_ready(uint32_t usart)
{
return ((USART_FR(usart) & USART_FR_BUSY) == 0);
}
uint16_t usart_recv_blocking(uint32_t usart)
{
while (!usart_is_recv_ready(usart));
return usart_recv(usart);
}
void usart_enable_rx_interrupt(uint32_t usart)
{
USART_IM(usart) |= USART_IM_RX;
}
void usart_enable_tx_interrupt(uint32_t usart)
{
USART_IM(usart) |= USART_IM_TX;
}
void usart_disable_rx_interrupt(uint32_t usart)
{
USART_IM(usart) &= (~USART_IM_RX);
}
void usart_disable_tx_interrupt(uint32_t usart)
{
USART_IM(usart) &= (~USART_IM_TX);
}
void usart_clear_rx_interrupt(uint32_t usart)
{
USART_IC(usart) |= USART_IC_RX;
}
void usart_clear_tx_interrupt(uint32_t usart)
{
USART_IC(usart) |= USART_IC_TX;
}
bool usart_get_interrupt_source(uint32_t usart, uint32_t flag)
{
return ((USART_RIS(usart) & flag) != 0);
}