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[examples] Added obldc strip led example.

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This commit is contained in:
Piotr Esden-Tempski 2012-11-11 20:36:21 -08:00
parent 1544800a23
commit d1e789b5b7
3 changed files with 121 additions and 0 deletions
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25
examples/stm32/f1/obldc-strip/led/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/>.
##
BINARY = led
LDSCRIPT = ../obldc-strip.ld
include ../../Makefile.include

65
examples/stm32/f1/obldc-strip/led/led.c Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Piotr Esden-Tempski <piotr@esden.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/stm32/f1/rcc.h>
#include <libopencm3/stm32/f1/gpio.h>
void clock_setup(void)
{
/* Set STM32 to 64 MHz. */
rcc_clock_setup_in_hsi_out_64mhz();
/* Enable alternate function peripheral clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
/* Enable GPIOB clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
}
void gpio_setup(void)
{
/* Configure PB4 as GPIO. */
AFIO_MAPR |= AFIO_MAPR_SWJ_CFG_FULL_SWJ_NO_JNTRST;
/* Set GPIO4 and 5 (in GPIO port B) to 'output push-pull'. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO4 | GPIO5);
}
int main(void)
{
int i;
clock_setup();
gpio_setup();
/* Blink the LEDs on the board. */
while (1) {
gpio_toggle(GPIOB, GPIO4); /* LED on/off */
for (i = 0; i < 8000000; i++) /* Wait a bit. */
__asm__("nop");
gpio_toggle(GPIOB, GPIO5); /* LED on/off */
for (i = 0; i < 8000000; i++) /* Wait a bit. */
__asm__("nop");
}
return 0;
}

31
examples/stm32/f1/obldc-strip/obldc-strip.ld 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/>.
*/
/* Linker script for Open-BLDC (STM32F103CBT6, 128K flash, 20K RAM). */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld