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Added obldc systick test program.

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This commit is contained in:
Piotr Esden-Tempski 2010-12-17 23:36:12 +01:00
parent 5e76fe66b7
commit 44442e44c9
4 changed files with 150 additions and 2 deletions
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10
examples/obldc/Makefile
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@ -24,15 +24,21 @@ Q := @
MAKEFLAGS += --no-print-directory MAKEFLAGS += --no-print-directory
endif endif
all: led all: led systick
led: led:
@printf " BUILD examples/obldc/led\n" @printf " BUILD examples/obldc/led\n"
$(Q)$(MAKE) -C led $(Q)$(MAKE) -C led
systick:
@printf " BUILD examples/obldc/systick\n"
$(Q)$(MAKE) -C systick
clean: clean:
@printf " CLEAN examples/obldc/led\n" @printf " CLEAN examples/obldc/led\n"
$(Q)$(MAKE) -C led clean $(Q)$(MAKE) -C led clean
@printf " CLEAN examples/obldc/systick\n"
$(Q)$(MAKE) -C systick clean
.PHONY: led .PHONY: led systick

22
examples/obldc/systick/Makefile Normal file
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@ -0,0 +1,22 @@
##
## 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 = systick
include ../../Makefile.include

89
examples/obldc/systick/systick.c Normal file
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@ -0,0 +1,89 @@
/*
* This file is part of the libopenstm32 project.
*
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
* Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
*
* 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/nvic.h>
#include <libopenstm32/systick.h>
u32 temp32;
void gpio_setup(void)
{
/* Enable GPIOA clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
/* Enable GPIOB clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
gpio_set(GPIOA, GPIO6); /* LED0 off */
gpio_set(GPIOA, GPIO7); /* LED1 off */
gpio_set(GPIOB, GPIO0); /* LED2 off */
gpio_set(GPIOB, GPIO1); /* LED3 off */
/* Set GPIO6/7 (in GPIO port A) to 'output push-pull' for the LEDs. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO6);
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO7);
/* Set GPIO6/7 (in GPIO port B) to 'output push-pull' for the LEDs. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO1);
}
void sys_tick_handler()
{
temp32++;
/* we call this handler every 1ms so 1000ms = 1s on/off */
if (temp32 == 1000) {
gpio_toggle(GPIOA, GPIO6); /* LED2 on/off */
temp32 = 0;
}
}
int main(void)
{
rcc_clock_setup_in_hse_16mhz_out_72mhz();
gpio_setup();
gpio_clear(GPIOA, GPIO7); /* LED1 on */
gpio_set(GPIOA, GPIO6); /* LED2 off */
temp32 = 0;
/* 72MHz / 8 => 9000000 counts per second */
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
/* 9000000/9000 = 1000 overflows per second - every 1ms one interrupt */
systick_set_reload(9000);
systick_interrupt_enable();
/* start counting */
systick_counter_enable();
while(1); /* Halt. */
return 0;
}

31
examples/obldc/systick/systick.ld Normal file
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@ -0,0 +1,31 @@
/*
* 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