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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
#include "board.h"
#if CFG_PRINTF_TARGET != PRINTF_TARGET_SEMIHOST
#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
#define retarget_getchar() board_uart_getchar()
#define retarget_putchar(c) board_uart_putchar(c);
#elif CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
volatile int32_t ITM_RxBuffer; // keil variable to read from SWO
#define retarget_getchar() ITM_ReceiveChar()
#define retarget_putchar(c) ITM_SendChar(c)
#else
#error Target is not implemented yet
#endif
//--------------------------------------------------------------------+
// LPCXPRESSO / RED SUITE
//--------------------------------------------------------------------+
#if defined __CODE_RED
#if CFG_PRINTF_TARGET == PRINTF_TARGET_SWO
#error author does not know how to retarget SWO with lpcxpresso/red-suite
#endif
// Called by bottom level of printf routine within RedLib C library to write
// a character. With the default semihosting stub, this would write the character
// to the debugger console window . But this version writes
// the character to the UART.
int __sys_write (int iFileHandle, char *buf, int length)
{
(void) iFileHandle;
for (int i=0; i<length; i++)
{
if (buf[i] == '\n') retarget_putchar('\r');
retarget_putchar( buf[i] );
}
return length;
}
// Called by bottom level of scanf routine within RedLib C library to read
// a character. With the default semihosting stub, this would read the character
// from the debugger console window (which acts as stdin). But this version reads
// the character from the UART.
int __sys_readc (void)
{
return (int) retarget_getchar();
}
#elif defined __SES_ARM && 0
#include <stdarg.h>
#include <stdio.h>
#include "__libc.h"
int printf(const char *fmt,...) {
char buffer[128];
va_list args;
va_start (args, fmt);
int n = vsnprintf(buffer, sizeof(buffer), fmt, args);
for(int i=0; i < n; i++)
{
retarget_putchar( buffer[i] );
}
va_end(args);
return n;
}
int __putchar(int ch, __printf_tag_ptr ctx)
{
(void)ctx;
retarget_putchar( (uint8_t) ch );
return 1;
}
int __getchar()
{
return retarget_getchar();
}
//--------------------------------------------------------------------+
// KEIL
//--------------------------------------------------------------------+
#elif defined __CC_ARM // keil
struct __FILE {
uint32_t handle;
};
void _ttywrch(int ch)
{
if ( ch == '\n' ) retarget_putchar('\r');
retarget_putchar(ch);
}
int fgetc(FILE *f)
{
return retarget_getchar();
}
int fputc(int ch, FILE *f)
{
_ttywrch(ch);
return ch;
}
//--------------------------------------------------------------------+
// IAR
//--------------------------------------------------------------------+
#elif defined __ICCARM__ // TODO could not able to retarget to UART with IAR
#if CFG_PRINTF_TARGET == PRINTF_TARGET_UART
#include <stddef.h>
size_t __write(int handle, const unsigned char *buf, size_t length)
{
/* Check for the command to flush all handles */
if (handle == -1) return 0;
/* Check for stdout and stderr (only necessary if FILE descriptors are enabled.) */
if (handle != 1 && handle != 2) return -1;
for (size_t i=0; i<length; i++)
{
if (buf[i] == '\n') retarget_putchar('\r');
retarget_putchar( buf[i] );
}
return length;
}
size_t __read(int handle, unsigned char *buf, size_t bufSize)
{
/* Check for stdin (only necessary if FILE descriptors are enabled) */
if (handle != 0) return -1;
size_t i;
for (i=0; i<bufSize; i++)
{
int8_t ch = board_uart_getchar();
if (ch == -1) break;
buf[i] = ch;
}
return i;
}
#endif
#endif
#endif // CFG_PRINTF_TARGET != PRINTF_TARGET_SEMIHOST
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