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Move STM32 examples to examples/stm32 subdir.

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This commit is contained in:
Uwe Hermann
2010-12-30 01:52:44 +01:00
parent b65f3f06d0
commit bcce98da54
115 changed files with 3 additions and 3 deletions
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23
examples/stm32/other/timer_interrupt/Makefile Normal file
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##
## This file is part of the libopenstm32 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
##
## 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 3 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/>.
##
BINARY = timer
include ../../Makefile.include

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examples/stm32/other/timer_interrupt/README Normal file
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------------------------------------------------------------------------------
README
------------------------------------------------------------------------------
This example program blinks a LED on PortB Pin 6. 1 second on / 1 second off.
Blinking is made only with the timer interrupt of the TIM2 timer.

85
examples/stm32/other/timer_interrupt/timer.c Normal file
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/*
* This file is part of the libopenstm32 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
*
* 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 3 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 <libopenstm32/rcc.h>
#include <libopenstm32/flash.h>
#include <libopenstm32/gpio.h>
#include <libopenstm32/timer.h>
#include <libopenstm32/nvic.h>
void gpio_setup(void)
{
/* Enable GPIOB clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
/* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
}
void nvic_setup()
{
/* without this the timer interrupt routine will never be called */
nvic_enable_irq(NVIC_TIM2_IRQ);
nvic_set_priority(NVIC_TIM2_IRQ, 1);
}
void tim2_isr()
{
/* LED2 on/off */
gpio_toggle(GPIOB, GPIO6);
/* clear interrrupt flag */
TIM_SR(TIM2) &= ~TIM_SR_UIF;
}
int main(void)
{
rcc_clock_setup_in_hse_16mhz_out_72mhz();
gpio_setup();
nvic_setup();
gpio_clear(GPIOB, GPIO7); /* LED1 on */
gpio_set(GPIOB, GPIO6); /* LED2 off */
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_TIM2EN);
/* the goal is to let the LED2 glow for a second and then be off for a second */
/* Set timer start value */
TIM_CNT(TIM2) = 1;
/* Set timer prescaler. 72MHz/1440 => 50000 counts per second */
TIM_PSC(TIM2) = 1440;
/* End timer value. If this value is reached an interrupt is generated */
TIM_ARR(TIM2) = 50000;
/* Update interrupt enable */
TIM_DIER(TIM2) |= TIM_DIER_UIE;
/* Start timer */
TIM_CR1(TIM2) |= TIM_CR1_CEN;
while(1); /* Halt. */
return 0;
}

31
examples/stm32/other/timer_interrupt/timer.ld Normal file
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/*
* This file is part of the libopenstm32 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
*
* 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 3 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/>.
*/
/* Linker script for an STM32F103RBT6 board (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 from libopenstm32. */
INCLUDE libopenstm32.ld