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Rename F1 examples folder.

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This commit is contained in:
Fergus Noble
2011-09-15 01:20:45 -07:00
committed by Stephen Caudle
parent ce7dd46aef
commit cff706e3ca
173 changed files with 127 additions and 0 deletions
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23
examples/stm32f1/other/systick/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 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

7
examples/stm32f1/other/systick/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 done via the systick timer interrupt.

75
examples/stm32f1/other/systick/systick.c Normal file
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/*
* This file is part of the libopencm3 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 <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/flash.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/nvic.h>
#include <libopencm3/stm32/systick.h>
u32 temp32;
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 sys_tick_handler()
{
temp32++;
/* we call this handler every 1ms so 1000ms = 1s on/off */
if (temp32 == 1000) {
gpio_toggle(GPIOB, GPIO6); /* LED2 on/off */
temp32 = 0;
}
}
int main(void)
{
rcc_clock_setup_in_hse_16mhz_out_72mhz();
gpio_setup();
gpio_clear(GPIOB, GPIO7); /* LED1 on */
gpio_set(GPIOB, 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/stm32f1/other/systick/systick.ld Normal file
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/*
* This file is part of the libopencm3 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. */
INCLUDE libopencm3_stm32.ld