/*********************************************************************
*
* _HandleIncomingPacket()
*
* Function description
* Read an incoming command from the down channel and process it.
*
* Additional information
* This function is called each time after sending a packet.
* Processing incoming packets is done asynchronous. SystemView might
* already have sent event packets after the host has sent a command.
*/
static void _HandleIncomingPacket(void) {
U8 Cmd;
int Status;
//
Status = SEGGER_RTT_ReadNoLock(CHANNEL_ID_DOWN, &Cmd, 1);
if (Status > 0) {
switch (Cmd) {
case SEGGER_SYSVIEW_COMMAND_ID_START:
SEGGER_SYSVIEW_Start();
break;
case SEGGER_SYSVIEW_COMMAND_ID_STOP:
SEGGER_SYSVIEW_Stop();
break;
case SEGGER_SYSVIEW_COMMAND_ID_GET_SYSTIME:
SEGGER_SYSVIEW_RecordSystime();
break;
case SEGGER_SYSVIEW_COMMAND_ID_GET_TASKLIST:
SEGGER_SYSVIEW_SendTaskList();
break;
case SEGGER_SYSVIEW_COMMAND_ID_GET_SYSDESC:
SEGGER_SYSVIEW_GetSysDesc();
break;
}
}
}
/*********************************************************************
*
* SEGGER_RTT_Read
*
* Function description
* Reads characters from SEGGER real-time-terminal control block
* which have been previously stored by the host.
*
* Parameters
* BufferIndex Index of Down-buffer to be used (e.g. 0 for "Terminal").
* pBuffer Pointer to buffer provided by target application, to copy characters from RTT-down-buffer to.
* BufferSize Size of the target application buffer.
*
* Return value
* Number of bytes that have been read.
*/
unsigned SEGGER_RTT_Read(unsigned BufferIndex, void* pBuffer, unsigned BufferSize) {
unsigned NumBytesRead;
//
SEGGER_RTT_LOCK();
//
// Call the non-locking read function
//
NumBytesRead = SEGGER_RTT_ReadNoLock(BufferIndex, pBuffer, BufferSize);
//
// Finish up.
//
SEGGER_RTT_UNLOCK();
//
return NumBytesRead;
}