52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2014 Chuck McManis (cmcmanis@mcmanis.com)
|
|
*
|
|
* 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/rcc.h>
|
|
#include <libopencm3/stm32/gpio.h>
|
|
|
|
#define GREEN_LED GPIO13
|
|
#define RED_LED GPIO13
|
|
|
|
int main(void)
|
|
{
|
|
int i;
|
|
|
|
/* Use parameters to set the STM32 clock to 168 MHz. */
|
|
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
|
|
|
|
/* Enable GPIOG clock. (this enables the pins to work) */
|
|
rcc_periph_clock_enable(RCC_GPIOG);
|
|
|
|
/* Set the "mode" of the GPIO pin to output, no pullups or pulldowns */
|
|
gpio_mode_setup(GPIOG, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GREEN_LED );
|
|
|
|
/* Turn on the GREEN led */
|
|
gpio_set(GPIOG, GREEN_LED);
|
|
|
|
/* Blink the GREEN LED on the board. */
|
|
while (1) {
|
|
/* Toggle LEDs. */
|
|
gpio_toggle(GPIOG, GREEN_LED);
|
|
for (i = 0; i < 10000000; i++) /* Wait a bit. */
|
|
__asm__("nop");
|
|
}
|
|
|
|
return 0;
|
|
}
|