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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);
}
/* Generalized routine to send binary, decimal, and hex integers.
* This code is adapted from Chris Giese's printf.c
*/
void uart_send_number(uint32_t num, uint8_t digits, uint8_t radix)
{
#define BUFSIZE 32
char buf[BUFSIZE];
char *where = buf + BUFSIZE;
/* initialize buf so we can add leading 0 by adjusting the pointer */
memset(buf, '0', BUFSIZE);
/* build the string backwards, starting with the least significant digit */
do {
uint32_t temp;
temp = num % radix;
where--;
if (temp < 10)
*where = temp + '0';
else
*where = temp - 10 + 'A';
num = num / radix;
} while (num != 0);
if (where > buf + BUFSIZE - digits)
/* pad with leading 0 */
where = buf + BUFSIZE - digits;
else
/* number is larger than the specified number of digits */
digits = buf + BUFSIZE - where;
HAL_UART_Transmit(&huart2, (uint8_t *) where, digits, 0x1);
}
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