/*********************************************************************
*
* SEGGER_RTT_Write
*
* Function description
* Stores a specified number of characters in SEGGER RTT
* control block which is then read by the host.
*
* Parameters
* BufferIndex Index of "Up"-buffer to be used (e.g. 0 for "Terminal").
* pBuffer Pointer to character array. Does not need to point to a \0 terminated string.
* NumBytes Number of bytes to be stored in the SEGGER RTT control block.
*
* 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, remaining characters of pBuffer are dropped.
*/
unsigned SEGGER_RTT_Write(unsigned BufferIndex, const void* pBuffer, unsigned NumBytes) {
unsigned Status;
//
INIT();
SEGGER_RTT_LOCK();
//
// Call the non-locking write function
//
Status = SEGGER_RTT_WriteNoLock(BufferIndex, pBuffer, NumBytes);
//
// Finish up.
//
SEGGER_RTT_UNLOCK();
//
return Status;
}
static void serial_tx(void const * p_context, char const * buffer, size_t len)
{
if (len)
{
uint32_t idx = 0;
uint32_t processed;
uint32_t watchdog_counter = 10;
do
{
processed = SEGGER_RTT_WriteNoLock(0, &buffer[idx], len);
idx += processed;
len -= processed;
if (processed == 0)
{
// If RTT is not connected then ensure that logger does not block
watchdog_counter--;
if (watchdog_counter == 0)
{
break;
}
}
} while (len);
}
}
