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This commit is contained in:
tbarnes98
2022-01-21 14:53:11 -06:00
parent 39ab045662
commit ca7c76e436
111 changed files with 37834 additions and 0 deletions
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66
SerialConsoleTemplate/Src/main.c Normal file
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/**
******************************************************************************
* @file main.c
* @author Auto-generated by STM32CubeIDE
* @version V1.0
* @brief Default main function.
******************************************************************************
*/
#include <stdio.h>
#include <stdlib.h>
#include "uart_driver.h"
#define F_CPU 16000000UL
#define ARSIZE 10
main(){
init_usart2(57600,F_CPU);
int ch_arr[ARSIZE],count1;
int count2, stop, lastchar;
lastchar = 0;
stop = 0;
/*
* Read characters into array.
* Stop if end of line, or array full.
*/
while(stop != 1){
ch_arr[lastchar] = getchar();
if(ch_arr[lastchar] == '\n')
stop = 1;
else
lastchar = lastchar + 1;
if(lastchar == ARSIZE)
stop = 1;
}lastchar = lastchar-1;
/*
* Now the traditional bubble sort.
*/
count1 = 0;
while(count1 < lastchar){
count2 = count1 + 1;
while(count2 <= lastchar){
if(ch_arr[count1] > ch_arr[count2]){
/* swap */
int temp;
temp = ch_arr[count1];
ch_arr[count1] = ch_arr[count2];
ch_arr[count2] = temp;
}
count2 = count2 + 1;
}
count1 = count1 + 1;
}
count1 = 0;
while(count1 <= lastchar){
printf("%c\n", ch_arr[count1]);
count1 = count1 + 1;
}
exit(EXIT_SUCCESS);
}

184
SerialConsoleTemplate/Src/syscalls.c Normal file
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/**
*****************************************************************************
**
** File : syscalls.c
**
** Author : Auto-generated by STM32CubeIDE
**
** Abstract : STM32CubeIDE Minimal System calls file
**
** For more information about which c-functions
** need which of these lowlevel functions
** please consult the Newlib libc-manual
**
** Environment : STM32CubeIDE MCU
**
** Distribution: The file is distributed as is, without any warranty
** of any kind.
**
*****************************************************************************
**
** <h2><center>&copy; COPYRIGHT(c) 2018 STMicroelectronics</center></h2>
**
** Redistribution and use in source and binary forms, with or without modification,
** are permitted provided that the following conditions are met:
** 1. Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright notice,
** this list of conditions and the following disclaimer in the documentation
** and/or other materials provided with the distribution.
** 3. Neither the name of STMicroelectronics nor the names of its contributors
** may be used to endorse or promote products derived from this software
** without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
**
*****************************************************************************
*/
/* Includes */
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>
/* Variables */
//#undef errno
extern int errno;
extern int __io_putchar(int ch) __attribute__((weak));
extern int __io_getchar(void) __attribute__((weak));
register char * stack_ptr asm("sp");
char *__env[1] = { 0 };
char **environ = __env;
/* Functions */
void initialise_monitor_handles()
{
}
int _getpid(void)
{
return 1;
}
int _kill(int pid, int sig)
{
errno = EINVAL;
return -1;
}
void _exit (int status)
{
_kill(status, -1);
while (1) {} /* Make sure we hang here */
}
__attribute__((weak)) int _read(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
*ptr++ = __io_getchar();
}
return len;
}
__attribute__((weak)) int _write(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
__io_putchar(*ptr++);
}
return len;
}
int _close(int file)
{
return -1;
}
int _fstat(int file, struct stat *st)
{
st->st_mode = S_IFCHR;
return 0;
}
int _isatty(int file)
{
return 1;
}
int _lseek(int file, int ptr, int dir)
{
return 0;
}
int _open(char *path, int flags, ...)
{
/* Pretend like we always fail */
return -1;
}
int _wait(int *status)
{
errno = ECHILD;
return -1;
}
int _unlink(char *name)
{
errno = ENOENT;
return -1;
}
int _times(struct tms *buf)
{
return -1;
}
int _stat(char *file, struct stat *st)
{
st->st_mode = S_IFCHR;
return 0;
}
int _link(char *old, char *new)
{
errno = EMLINK;
return -1;
}
int _fork(void)
{
errno = EAGAIN;
return -1;
}
int _execve(char *name, char **argv, char **env)
{
errno = ENOMEM;
return -1;
}

83
SerialConsoleTemplate/Src/sysmem.c Normal file
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/**
*****************************************************************************
**
** File : sysmem.c
**
** Author : Auto-generated by STM32CubeIDE
**
** Abstract : STM32CubeIDE Minimal System Memory calls file
**
** For more information about which c-functions
** need which of these lowlevel functions
** please consult the Newlib libc-manual
**
** Environment : STM32CubeIDE MCU
**
** Distribution: The file is distributed as is, without any warranty
** of any kind.
**
*****************************************************************************
**
** <h2><center>&copy; COPYRIGHT(c) 2018 STMicroelectronics</center></h2>
**
** Redistribution and use in source and binary forms, with or without modification,
** are permitted provided that the following conditions are met:
** 1. Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright notice,
** this list of conditions and the following disclaimer in the documentation
** and/or other materials provided with the distribution.
** 3. Neither the name of STMicroelectronics nor the names of its contributors
** may be used to endorse or promote products derived from this software
** without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
**
*****************************************************************************
*/
/* Includes */
#include <errno.h>
#include <stdio.h>
/* Variables */
extern int errno;
register char * stack_ptr asm("sp");
/* Functions */
/**
_sbrk
Increase program data space. Malloc and related functions depend on this
**/
caddr_t _sbrk(int incr)
{
extern char end asm("end");
static char *heap_end;
char *prev_heap_end;
if (heap_end == 0)
heap_end = &end;
prev_heap_end = heap_end;
if (heap_end + incr > stack_ptr)
{
errno = ENOMEM;
return (caddr_t) -1;
}
heap_end += incr;
return (caddr_t) prev_heap_end;
}

92
SerialConsoleTemplate/Src/uart_driver.c Normal file
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/*
* uart_driver.c
*
* Created on: Nov 8, 2016
* Author: barnekow
*/
#include "uart_driver.h"
#include <inttypes.h>
#include <stdio.h>
// These will override _read and _write in syscalls.c, which are
// prototyped as weak
int _read(int file, char *ptr, int len)
{
int DataIdx;
// Modified the for loop in order to get the correct behavior for fgets
int byteCnt = 0;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
//*ptr++ = __io_getchar();
byteCnt++;
//*ptr++ = usart2_getch();
*ptr = usart2_getch();
if(*ptr == '\n') break;
ptr++;
}
//return len;
return byteCnt; // Return byte count
}
int _write(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
usart2_putch(*ptr++);
}
return len;
}
char usart2_getch(){
char c;
while((*(USART_SR)&(1<<RXNE)) != (1<<RXNE));
c = ((char) *USART_DR); // Read character from usart
usart2_putch(c); // Echo back
if (c == '\r'){ // If character is CR
usart2_putch('\n'); // send it
c = '\n'; // Return LF. fgets is terminated by LF
}
return c;
}
void usart2_putch(char c){
while((*(USART_SR)&(1<<TXE)) != (1<<TXE));
*(USART_DR) = c;
}
void init_usart2(uint32_t baud, uint32_t sysclk){
// Enable clocks for GPIOA and USART2
*(RCC_AHB1ENR) |= (1<<GPIOAEN);
*(RCC_APB1ENR) |= (1<<USART2EN);
// Function 7 of PORTA pins is USART
*(GPIOA_AFRL) &= (0xFFFF00FF); // Clear the bits associated with PA3 and PA2
*(GPIOA_AFRL) |= (0b01110111<<8); // Choose function 7 for both PA3 and PA2
*(GPIOA_MODER) &= (0xFFFFFF0F); // Clear mode bits for PA3 and PA2
*(GPIOA_MODER) |= (0b1010<<4); // Both PA3 and PA2 in alt function mode
// Set up USART2
//USART2_init(); //8n1 no flow control
// over8 = 0..oversample by 16
// M = 0..1 start bit, data size is 8, 1 stop bit
// PCE= 0..Parity check not enabled
// no interrupts... using polling
*(USART_CR1) = (1<<UE)|(1<<TE)|(1<<RE); // Enable UART, Tx and Rx
*(USART_CR2) = 0; // This is the default, but do it anyway
*(USART_CR3) = 0; // This is the default, but do it anyway
*(USART_BRR) = sysclk/baud;
/* I'm not sure if this is needed for standard IO*/
//setvbuf(stderr, NULL, _IONBF, 0);
//setvbuf(stdin, NULL, _IONBF, 0);
setvbuf(stdout, NULL, _IONBF, 0);
}