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/*
* Oct 2017 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>
#include <libopencm3/stm32/usart.h>
#include "uart-basic.h"
#define LED_DISCO_GREEN_RCC RCC_GPIOC
#define LED_DISCO_GREEN_PORT GPIOC
#define LED_DISCO_GREEN_PIN GPIO9
void usart3_4_isr(void)
{
ub_irq_handler();
}
static void board_init(void) {
rcc_periph_clock_enable(RCC_GPIOB);
gpio_mode_setup(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO10|GPIO11);
/* usart3 is AF4 */
gpio_set_af(GPIOB, GPIO_AF4, GPIO10|GPIO11);
}
int main(void)
{
int i;
int j = 0;
rcc_clock_setup_in_hsi48_out_48mhz();
board_init();
struct ub_hw ub = {
.uart = USART3,
.uart_nvic = NVIC_USART3_4_IRQ,
.uart_rcc = RCC_USART3,
};
ub_init(&ub);
printf("hi guys!\n");
/* green led for ticking */
rcc_periph_clock_enable(LED_DISCO_GREEN_RCC);
gpio_mode_setup(LED_DISCO_GREEN_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
LED_DISCO_GREEN_PIN);
while (1) {
gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
for (i = 0; i < 0xa0000; i++) { /* Wait a bit. */
__asm__("NOP");
}
ub_task();
gpio_toggle(LED_DISCO_GREEN_PORT, LED_DISCO_GREEN_PIN);
for (i = 0; i < 0xa0000; i++) { /* Wait a bit. */
__asm__("NOP");
}
}
return 0;
}
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