/*!
* Gets a command response from the radio chip
*
* @param cmd Command ID
* @param pollCts Set to poll CTS
* @param byteCount Number of bytes to get from the radio chip
* @param pData Pointer to where to put the data
*/
void radio_comm_WriteData(U8 cmd, U8 pollCts, U8 byteCount, U8* pData)
{
if(pollCts)
{
while(!ctsWentHigh)
{
radio_comm_PollCTS();
}
}
radio_hal_ClearNsel();
radio_hal_SpiWriteByte(cmd);
radio_hal_SpiWriteData(byteCount, pData);
radio_hal_SetNsel();
ctsWentHigh = 0;
}
/*!
* Sends a command to the radio chip
*
* @param byteCount Number of bytes in the command to send to the radio device
* @param pData Pointer to the command to send.
*/
void radio_comm_SendCmd(U8 byteCount, U8* pData)
{
/* There was a bug in A1 hardware that will not handle 1 byte commands.
It was supposedly fixed in B0 but the fix didn't make it at the last minute, so here we go again */
if (byteCount == 1)
byteCount++;
while (!ctsWentHigh)
{
radio_comm_PollCTS();
}
radio_hal_ClearNsel();
radio_hal_SpiWriteData(byteCount, pData);
radio_hal_SetNsel();
ctsWentHigh = 0;
}
void radio_comm_ReadData(U8 cmd, uint8 pollCts, U16 byteCount, U8* pData)
{
if(pollCts)
{
while(!ctsWentHigh)
{
radio_comm_PollCTS();
}
}
radio_hal_ClearNsel();
//int TimBaseVal=GetTimingBase();
radio_hal_SpiWriteByte(cmd);
radio_hal_SpiReadData(byteCount, pData);
radio_hal_SetNsel();
ctsWentHigh = 0;
}
void si4455_ezconfig_check(U16 CHECKSUM)
{
/* Do not check CTS */
radio_hal_ClearNsel();
/* Command byte */
radio_hal_SpiWriteByte(SI4455_CMD_ID_EZCONFIG_CHECK);
/* CRC */
radio_hal_SpiWriteByte((U16) CHECKSUM >> 8u);
radio_hal_SpiWriteByte((U16) CHECKSUM & 0x00FF);
radio_hal_SetNsel();
/* Get the respoonse from the radio chip */
radio_comm_GetResp(1u, radioCmd);
}
U8 radio_comm_GetResp(U8 byteCount, U8* pData)
{
SEGMENT_VARIABLE(ctsVal = 0u, U8);
SEGMENT_VARIABLE(errCnt = RADIO_CTS_TIMEOUT, U16);
while (errCnt != 0) //wait until radio IC is ready with the data
{
radio_hal_ClearNsel();
radio_hal_SpiWriteByte(0x44); //read CMD buffer
ctsVal = radio_hal_SpiReadByte();
if (ctsVal == 0xFF)
{
if (byteCount)
{
radio_hal_SpiReadData(byteCount, pData);
}
radio_hal_SetNsel();
break;
}
radio_hal_SetNsel();
errCnt--;
}
if (errCnt == 0)
{
while(1)
{
/* ERROR!!!! CTS should never take this long. */
#ifdef RADIO_COMM_ERROR_CALLBACK
RADIO_COMM_ERROR_CALLBACK();
#endif
}
}
if (ctsVal == 0xFF)
{
ctsWentHigh = 1;
}
return ctsVal;
}
