#include "uart.h"
#include <libopencm3/cm3/nvic.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>

void uart_setup() {
  rcc_periph_clock_enable(RCC_GPIOB);
  rcc_periph_clock_enable(RCC_USART3);

  gpio_mode_setup(GPIOB, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO10 | GPIO11);
  gpio_set_af(GPIOB, GPIO_AF7, GPIO10 | GPIO11);

  usart_set_baudrate(USART3, 115200);
  usart_set_databits(USART3, 8);
  usart_set_stopbits(USART3, USART_STOPBITS_1);
  usart_set_mode(USART3, USART_MODE_TX_RX);
  usart_set_parity(USART3, USART_PARITY_NONE);
  usart_set_flow_control(USART3, USART_FLOWCONTROL_NONE);
  usart_enable(USART3);

  usart_disable_tx_complete_interrupt(USART3);
  usart_enable_tx_interrupt(USART3);
  usart_enable_rx_interrupt(USART3);
}