feat: usart retarget
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parent
f515d5fa96
commit
05dc5e3f53
32
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generated
32
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generated
@ -28,8 +28,11 @@
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22
Core/Inc/retarget.h
Normal file
22
Core/Inc/retarget.h
Normal file
@ -0,0 +1,22 @@
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#ifndef _RETARGET_H__
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#define _RETARGET_H__
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#include "stm32f1xx_hal.h"
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#include <sys/stat.h>
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#include <stdio.h>
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void RetargetInit(UART_HandleTypeDef *huart);
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int _isatty(int fd);
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int _write(int fd, char *ptr, int len);
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int _close(int fd);
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int _lseek(int fd, int ptr, int dir);
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int _read(int fd, char *ptr, int len);
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int _fstat(int fd, struct stat *st);
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#endif //#ifndef _RETARGET_H__
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@ -27,6 +27,7 @@
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/* USER CODE BEGIN Includes */
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#include <stdio.h>
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#include "retarget.h"
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#include "oled.h"
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#include "rc522.h"
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/* USER CODE END Includes */
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@ -119,13 +120,19 @@ int main(void)
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MX_USART1_UART_Init();
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MX_SPI1_Init();
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/* USER CODE BEGIN 2 */
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// Retarget uart
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RetargetInit(&huart1);
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// Init RC522
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MFRC_Init();
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PCD_Reset();
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// Init OLED
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OLED_Init();
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OLED_Clear();
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OLED_ShowString(0,0,"Card scan...",12);
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printf("startup\n");
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/* USER CODE END 2 */
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/* Infinite loop */
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98
Core/Src/retarget.c
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98
Core/Src/retarget.c
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@ -0,0 +1,98 @@
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#include <_ansi.h>
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#include <_syslist.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <sys/times.h>
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#include <retarget.h>
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#include <stdint.h>
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#if !defined(OS_USE_SEMIHOSTING)
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#define STDIN_FILENO 0
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#define STDOUT_FILENO 1
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#define STDERR_FILENO 2
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UART_HandleTypeDef *gHuart;
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void RetargetInit(UART_HandleTypeDef *huart)
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{
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gHuart = huart;
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/* Disable I/O buffering for STDOUT stream, so that
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* chars are sent out as soon as they are printed. */
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setvbuf(stdout, NULL, _IONBF, 0);
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}
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int _isatty(int fd)
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{
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if (fd >= STDIN_FILENO && fd <= STDERR_FILENO)
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return 1;
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errno = EBADF;
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return 0;
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}
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int _write(int fd, char *ptr, int len)
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{
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HAL_StatusTypeDef hstatus;
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if (fd == STDOUT_FILENO || fd == STDERR_FILENO)
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{
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hstatus = HAL_UART_Transmit(gHuart, (uint8_t *) ptr, len, HAL_MAX_DELAY);
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if (hstatus == HAL_OK)
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return len;
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else
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return EIO;
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}
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errno = EBADF;
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return -1;
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}
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int _close(int fd)
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{
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if (fd >= STDIN_FILENO && fd <= STDERR_FILENO)
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return 0;
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errno = EBADF;
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return -1;
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}
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int _lseek(int fd, int ptr, int dir)
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{
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(void) fd;
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(void) ptr;
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(void) dir;
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errno = EBADF;
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return -1;
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}
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int _read(int fd, char *ptr, int len)
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{
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HAL_StatusTypeDef hstatus;
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if (fd == STDIN_FILENO)
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{
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hstatus = HAL_UART_Receive(gHuart, (uint8_t *) ptr, 1, HAL_MAX_DELAY);
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if (hstatus == HAL_OK)
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return 1;
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else
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return EIO;
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}
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errno = EBADF;
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return -1;
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}
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int _fstat(int fd, struct stat *st)
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{
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if (fd >= STDIN_FILENO && fd <= STDERR_FILENO)
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{
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st->st_mode = S_IFCHR;
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return 0;
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}
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errno = EBADF;
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return 0;
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}
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#endif //#if !defined(OS_USE_SEMIHOSTING)
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@ -89,33 +89,33 @@ __attribute__((weak)) int _write(int file, char *ptr, int len)
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return len;
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}
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int _close(int file)
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{
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(void)file;
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return -1;
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}
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int _fstat(int file, struct stat *st)
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{
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(void)file;
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st->st_mode = S_IFCHR;
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return 0;
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}
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int _isatty(int file)
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{
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(void)file;
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return 1;
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}
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int _lseek(int file, int ptr, int dir)
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{
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(void)file;
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(void)ptr;
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(void)dir;
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return 0;
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}
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// int _close(int file)
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// {
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// (void)file;
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// return -1;
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// }
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//
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//
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// int _fstat(int file, struct stat *st)
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// {
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// (void)file;
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// st->st_mode = S_IFCHR;
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// return 0;
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// }
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//
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// int _isatty(int file)
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// {
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// (void)file;
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// return 1;
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// }
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//
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// int _lseek(int file, int ptr, int dir)
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// {
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// (void)file;
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// (void)ptr;
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// (void)dir;
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// return 0;
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// }
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int _open(char *path, int flags, ...)
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{
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