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/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
#include "stm-uart.h"
#include <string.h>
static UART_HandleTypeDef huart2;
extern void Error_Handler();
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* USART2 init function */
void MX_USART2_UART_Init(void)
{
huart2.Instance = USART2;
huart2.Init.BaudRate = USART2_BAUD_RATE;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart2) != HAL_OK) {
/* Initialization Error */
Error_Handler();
}
}
void uart_send_char(uint8_t ch)
{
HAL_UART_Transmit(&huart2, &ch, 1, 0x1);
}
void uart_send_string(char *s)
{
HAL_UART_Transmit(&huart2, (uint8_t *) s, strlen(s), 0x1);
}
void uart_send_binary(uint32_t num, uint8_t bits)
{
uint32_t i;
uint8_t ch;
bits--; /* bits 4 should give i = 1000, not 10000 */
i = 1 << bits;
while (i) {
ch = '0';
if (num & i) {
ch = '1';
}
uart_send_char(ch);
i = i >> 1;
}
}
/* XXX this takes a mask, not a number of digits */
void uart_send_integer(uint32_t data, uint32_t mag) {
uint32_t i, t;
uint8_t ch;
if (! mag) {
/* Find magnitude */
if (data < 10) {
ch = '0' + data;
uart_send_char(ch);
return;
}
for (mag = 10; mag < data; mag = i) {
i = mag * 10;
if (i > data || i < mag)
break;
}
}
/* mag is now 10 if data is 45, and 1000 if data is 1009 */
for (i = mag; i; i /= 10) {
t = (data / i);
ch = '0' + t;
uart_send_char(ch);
data -= (t * i);
}
}
void uart_send_hex(uint32_t num, uint8_t digits)
{
uint8_t ch;
uint32_t mask;
mask = 0x0FL << ((digits - 1) * 4);
if (digits == 0 || digits > 8)
digits = 8;
while (digits) {
ch = (num & mask) >> ((digits - 1) * 4);
if (ch < 10)
ch += '0';
else
ch += 'A' - 10;
uart_send_char(ch);
--digits;
mask >>= 4;
}
}
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