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