Hi,
We have a custom board with CC2652 TI BLE5 chip with a switch -SPDT switch AS179-92LF and power amplifier -A7700 connected in the front end circuit.
The following configuration is done to automate the RX and TX control logic switching.
IOCPortConfigureSet(IOID_0,IOC_PORT_RFC_GPO0, IOC_IOMODE_NORMAL); - For PA
IOCPortConfigureSet(IOID_1,IOC_PORT_RFC_GPO3, IOC_IOMODE_NORMAL);
IOCPortConfigureSet(IOID_12,IOC_PORT_RFC_GPO0, IOC_IOMODE_NORMAL); - For Switch
IOCPortConfigureSet(IOID_13,IOC_PORT_RFC_GPO3, IOC_IOMODE_NORMAL);
The test command HCI_EXT_ModemTestTxCmd(HCI_EXT_TX_UNMODULATED_CARRIER,19) and HCI_EXT_ModemTestRxCmd(19) is executed in 5sec intervals to measure the power amplifier output,
and is measured only in the range of -50dbm. So we infer that the PA front end is not functioning properly when switching between RX and TX.
We verified the RX and TX pin output in CRO and the waveform is toggling in 5seconds.
Please guide us if any stack configuration can be done for the A7700 PA to function properly with cc2652 chipset.
Thanks,
Anu
