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#include "project.h"
#define TX2 GPIO5
#define TX2_PORT GPIOD
#define RX2 GPIO6
#define RX2_PORT GPIOD
void
usart2_xmit_chr (char d)
{
usart_send_blocking (USART2, d);
}
void
usart2_xmit_str (const char *s)
{
while (*s)
usart_send_blocking (USART2, * (s++));
}
void usart2_xmit_nl (void)
{
usart2_xmit_str ("\r\n");
}
void usart2_xmit_xdigit (unsigned d)
{
if (d < 0xa) usart2_xmit_chr ('0' + d);
else usart2_xmit_chr ('a' + (d - 0xa));
}
void usart2_xmit_uint32 (uint32_t v)
{
unsigned i;
for (i = 0; i < 8; ++i) {
usart2_xmit_xdigit (v >> 28);
v <<= 4;
}
}
void
usart_init (void)
{
rcc_periph_clock_enable (RCC_GPIOD);
rcc_periph_clock_enable (RCC_USART2);
MAP_INPUT (RX2);
MAP_AF (TX2, GPIO_AF7);
MAP_AF_PU (RX2, GPIO_AF7);
usart_set_baudrate (USART2, 38400);
usart_set_databits (USART2, 8);
usart_set_stopbits (USART2, USART_STOPBITS_1);
usart_set_parity (USART2, USART_PARITY_NONE);
usart_set_flow_control (USART2, USART_FLOWCONTROL_NONE);
usart_set_mode (USART2, USART_MODE_TX_RX);
usart_enable (USART2);
}
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