fsfw-example-stm32h7-freertos/bsp_stm32h7_freertos/NUCLEO-H743ZI/Src/syscalls.c

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2021-07-12 21:50:48 +02:00
/*!
* @file syscalls.c
* Implements some base-level for libc for heap management and printing on
* the debug port.
*/
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdio.h>
#include <hardware_init.h>
#include <boardconfig.h>
#define AUTO_RETURN_AFTER_NEWLINE 1
// _write currently adds \n after \r automatically.
// If the At91lib\utility\stdio.c printf implementation is not used anymore:
// remove if there are spurious newlines!
//int _read(int file, void *ptr, size_t len) {
// (void)len;
// if(file <= STDERR_FILENO) {
// *(char *) ptr = DBGU_GetChar();
//#if AUTO_RETURN_AFTER_NEWLINE
// if((*(char *) ptr != '\n') && (*(char *) ptr != '\r')) {
// DBGU_PutChar(*(char *) ptr);
// }
// else if(*(char *) ptr == '\r') {
// DBGU_PutChar('\n');
// DBGU_PutChar('\r');
// }
//#endif
// return 1;
// }
// else {
// return -1;
// }
//
//}
int _write(int file, const void *ptr, size_t len) {
size_t i;
if(file <= STDERR_FILENO) {
for(i=0; i<len; i++) {
#if AUTO_RETURN_AFTER_NEWLINE
if(((const char *) ptr)[i] == '\n' &&
((const char *) ptr)[i+1] != '\r') {
HAL_UART_Transmit(&huart3, (uint8_t*)"\r", 1 ,
DEBUG_UART_MS_TIMEOUT);
}
#endif
uint8_t* character = (uint8_t*) ptr;
HAL_UART_Transmit(&huart3, (uint8_t*) (character + i),
1 , DEBUG_UART_MS_TIMEOUT);
}
return len;
} else {
return -1;
}
}
int _lseek (int file, int ptr, int dir) {
(void)file;
(void)ptr;
(void)dir;
return 0;
}
int _close(int file) {
(void)file;
return -1;
}
int _open(const char *name, int flags, ...) {
(void)name;
(void)flags;
return -1;
}
int _link(const char *oldpath, const char *newpath) {
(void)oldpath;
(void)newpath;
return -1;
}
int _rename(const char *oldpath, const char *newpath) {
(void)oldpath;
(void)newpath;
return -1;
}
int _unlink(const char *pathname) {
(void)pathname;
return -1;
}
int fsync(int fd) {
(void)fd;
return -1;
}
int _fstat(int fd, struct stat *st) {
(void)fd;
(void)st;
return -1;
}
int _stat(const char *path, struct stat *st) {
(void)path;
(void)st;
return -1;
}
int _isatty(int fd) {
if(fd <= STDERR_FILENO) {
return 1;
}
else {
return 0;
}
}
void exit(int n) {
printf("\n\r EXITING WITH CODE: %u \n\r", n);
//restart();
while(1);
}
void _exit(int n) {
printf("\n\r EXITING WITH CODE: %u \n\r", n);
//restart();
while(1);
}
int _kill() {
return -1;
}
int _getpid() {
return 1;
}
int _gettimeofday() {
return -1;
}