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/*
* Nov 2015 Karl Palsson <karlp@tweak.net.au>
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/rcc.h>
#define LED_DISCO_RED_PORT GPIOB
#define LED_DISCO_RED_PIN GPIO2
#define LED_DISCO_GREEN_PORT GPIOE
#define LED_DISCO_GREEN_PIN GPIO8
int main(void)
{
int i;
int j = 0;
rcc_periph_clock_enable(RCC_GPIOB);
rcc_periph_clock_enable(RCC_GPIOE);
/* green led for ticking */
gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
LED_DISCO_GREEN_PIN);
gpio_mode_setup(LED_DISCO_RED_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
LED_DISCO_RED_PIN);
while (1) {
gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
for (i = 0; i < 0x10000; i++) { /* Wait a bit. */
__asm__("NOP");
}
gpio_toggle(LED_DISCO_RED_PORT, LED_DISCO_RED_PIN);
for (i = 0; i < 0x10000; i++) { /* Wait a bit. */
__asm__("NOP");
}
}
return 0;
}
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