From bcce98da54b047a15ef0abf41e0c7794f29f0439 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 30 Dec 2010 01:52:44 +0100 Subject: Move STM32 examples to examples/stm32 subdir. --- examples/stm32/obldc/led/led.c | 67 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 examples/stm32/obldc/led/led.c (limited to 'examples/stm32/obldc/led/led.c') diff --git a/examples/stm32/obldc/led/led.c b/examples/stm32/obldc/led/led.c new file mode 100644 index 0000000..7784106 --- /dev/null +++ b/examples/stm32/obldc/led/led.c @@ -0,0 +1,67 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2009 Uwe Hermann + * Copyright (C) 2010 Piotr Esden-Tempski + * + * 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 . + */ + +#include +#include + +/* Set STM32 to 72 MHz. */ +void clock_setup(void) +{ + rcc_clock_setup_in_hse_8mhz_out_72mhz(); + + /* Enable GPIOA clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN); + + /* Enable GPIOB clock. */ + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN); +} + +void gpio_setup(void) +{ + /* Set GPIO6 and 7 (in GPIO port A) to 'output push-pull'. */ + gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO6 | GPIO7); + + /* Set GPIO0 and 1 (in GPIO port B) to 'output push-pull'. */ + gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO0 | GPIO1); +} + +int main(void) +{ + int i; + + clock_setup(); + gpio_setup(); + + /* Blink the LEDs on the board. */ + while (1) { + gpio_toggle(GPIOA, GPIO6); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + gpio_toggle(GPIOA, GPIO7); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + gpio_toggle(GPIOB, GPIO0); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + gpio_toggle(GPIOB, GPIO1); /* LED on/off */ + for (i = 0; i < 800000; i++); /* Wait (needs -O0 CFLAGS). */ + } + + return 0; +} -- cgit v1.2.3