/*********************************************************************
*
* _sys_write
*
* Function description:
* Writes the data to an open handle.
* Currently this function only outputs data to the console
*
* Parameters:
* hFile - Handle to a file opened via _sys_open
* pBuffer - Pointer to the data that shall be written
* NumBytes - Number of bytes to write
* Mode - The Mode that shall be used
*
* Return value:
* Number of bytes *not* written to the file/device
*
*/
int _sys_write(FILEHANDLE hFile, const unsigned char * pBuffer, unsigned NumBytes, int Mode) {
int r = 0;
(void)Mode;
if (hFile == STDOUT) {
return NumBytes - SEGGER_RTT_Write(0, (const char*)pBuffer, NumBytes);
}
return r;
}
/*
** ===================================================================
** Method : RTT1_SendChar (component SeggerRTT)
** Description :
** Sends a character to channel 0.
** Parameters :
** NAME - DESCRIPTION
** ch - Character to send
** Returns :
** --- - Error code. ERR_OK if character has been
** sent, ERR_TXFULL otherwise.
** ===================================================================
*/
uint8_t RTT1_SendChar(uint8_t ch)
{
int res;
res = SEGGER_RTT_Write(0, (const char*)&ch, 1);
if (res!=1) {
return ERR_TXFULL; /* character not sent? */
}
return ERR_OK;
}
/*********************************************************************
*
* main
*/
void main(void) {
SEGGER_RTT_WriteString(0, "SEGGER Real-Time-Terminal Sample\r\n");
SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_NO_BLOCK_SKIP);
do {
r = SEGGER_RTT_WaitKey();
SEGGER_RTT_Write(0, &r, 1);
r++;
} while (1);
}
//Overwrite _write so 'printf''s get pushed over the uart
int _write(int fd, char *ptr, int len)
{
#ifdef FRAMEWORK_LOG_OUTPUT_ON_RTT
SEGGER_RTT_Write(0, ptr, len);
#else
console_print_bytes((uint8_t*)ptr, len);
#endif
return len;
}
/*********************************************************************
*
* SEGGER_RTT_TerminalOut
*
* Function description
* Writes a string to the given terminal
* without changing the terminal for channel 0.
*
*/
int32_t SEGGER_RTT_TerminalOut (char TerminalId, const char* s) {
char ac[2];
int32_t r;
ac[0] = 0xFF;
if (TerminalId < 10) {
ac[1] = '0' + TerminalId;
} else if (TerminalId < 16) {
ac[1] = 'A' + (TerminalId - 0x0A);
} else {
return -1; // RTT only supports up to 16 virtual terminals.
}
SEGGER_RTT_Write(0, ac, 2);
r = SEGGER_RTT_WriteString(0, s);
if (TerminalId < 10) {
ac[1] = '0' + _ActiveTerminal;
} else if (TerminalId < 16) {
ac[1] = 'A' + (_ActiveTerminal - 0x0A);
}
SEGGER_RTT_Write(0, ac, 2);
return r;
}
/*********************************************************************
*
* SEGGER_RTT_SetTerminal
*
* Function description
* Sets the terminal to be used for output on channel 0.
*
*/
void SEGGER_RTT_SetTerminal (char TerminalId) {
char ac[2];
ac[0] = 0xFF;
if (TerminalId < 10) {
ac[1] = '0' + TerminalId;
} else if (TerminalId < 16) {
ac[1] = 'A' + (TerminalId - 0x0A);
} else {
return; // RTT only supports up to 16 virtual terminals.
}
_ActiveTerminal = TerminalId;
SEGGER_RTT_Write(0, ac, 2);
}
/*********************************************************************
*
* _StoreChar
*/
static void _StoreChar(SEGGER_RTT_PRINTF_DESC * p, char c) {
unsigned Cnt;
Cnt = p->Cnt;
if ((Cnt + 1u) <= p->BufferSize) {
*(p->pBuffer + Cnt) = c;
p->Cnt = Cnt + 1u;
p->ReturnValue++;
}
//
// Write part of string, when the buffer is full
//
if (p->Cnt == p->BufferSize) {
if (SEGGER_RTT_Write(p->RTTBufferIndex, p->pBuffer, p->Cnt) != p->Cnt) {
p->ReturnValue = -1;
} else {
p->Cnt = 0u;
}
}
}
/*********************************************************************
*
* SEGGER_RTT_WriteString
*
* Function description
* Stores string in SEGGER RTT control block.
* This data is read by the host.
*
* Parameters
* BufferIndex Index of "Up"-buffer to be used (e.g. 0 for "Terminal").
* s Pointer to string.
*
* Return value
* Number of bytes which have been stored in the "Up"-buffer.
*
* Notes
* (1) If there is not enough space in the "Up"-buffer, depending on configuration,
* remaining characters may be dropped or RTT module waits until there is more space in the buffer.
* (2) String passed to this function has to be \0 terminated
* (3) \0 termination character is *not* stored in RTT buffer
*/
unsigned SEGGER_RTT_WriteString(unsigned BufferIndex, const char* s) {
unsigned Len;
Len = STRLEN(s);
return SEGGER_RTT_Write(BufferIndex, s, Len);
}
/*********************************************************************
*
* __write()
*
* Function description
* Low-level write function.
* libc subroutines will use this system routine for output to all files,
* including stdout.
* Write data via RTT.
*/
size_t __write(int handle, const unsigned char * buffer, size_t size) {
(void) handle; /* Not used, avoid warning */
SEGGER_RTT_Write(0, buffer, size);
return size;
}
/*********************************************************************
*
* _write_r()
*
* Function description
* Low-level reentrant write function.
* libc subroutines will use this system routine for output to all files,
* including stdout.
* Write data via RTT.
*/
int _write_r(struct _reent *r, int file, char *ptr, int len) {
(void) file; /* Not used, avoid warning */
(void) r; /* Not used, avoid warning */
SEGGER_RTT_Write(0, ptr, len);
return len;
}
/*********************************************************************
*
* _write()
*
* Function description
* Low-level write function.
* libc subroutines will use this system routine for output to all files,
* including stdout.
* Write data via RTT.
*/
int _write(int file, char *ptr, int len) {
(void) file; /* Not used, avoid warning */
SEGGER_RTT_Write(0, ptr, len);
return len;
}
/*********************************************************************
*
* SEGGER_RTT_WriteString
*
* Function description
* Stores string in SEGGER RTT control block.
* This data is read by the host.
*
* Parameters
* BufferIndex Index of "Up"-buffer to be used. (e.g. 0 for "Terminal")
* s Pointer to string.
*
* Return values
* Number of bytes which have been stored in the "Up"-buffer.
*
* Notes
* (1) If there is not enough space in the "Up"-buffer, depending on configuration,
* remaining characters may be dropped or RTT module waits until there is more space in the buffer.
* (2) String passed to this function has to be \0 terminated
* (3) \0 termination character is *not* stored in RTT buffer
*/
int32_t SEGGER_RTT_WriteString(unsigned BufferIndex, const char* s) {
int32_t Len;
Len = _strlen(s);
return SEGGER_RTT_Write(BufferIndex, s, Len);
}
uint32_t segger_send_byte(uint8_t byte){
return SEGGER_RTT_Write(0, &byte, 1);
}
