There is a function call to read registers from the rf modem in SMAC/drivers.c
/*!
* \brief SPIDrvRead : Read 1 word from SPI
*
* \param u8Addr - SPI address
*
* \return u16Data - u16Data[0] is the MSB, u16Data[1] is the LSB
*/
UINT16 SPIDrvRead(UINT8 u8Addr)
The debugger is connected to the 9S08GTxx. The rf transceiver communicates to the 9S08GTxx via SPI port.
- Rick