I've been seeing issues with getting an interrupt on the TX side. I reckon it could also be linked to the RX module cause if the payload isn't sent, the interrupt on the TX side won't be asserted?
Snippet for transmitting payload:
NRF_STATUS nRF24_TransmitPayload(nrfl2401 *nrf, uint8_t *data, uint8_t size)
{
printf ("\n ********** Sending payload data %c ************\n", *data);
// switch to TX mode
nRF24_SetConfigureRegister(nrf, nRF24_PRIM_RX, TX_CTRL); // todo - switch to TX mode here!
nrf->state = NRF_TX_BUSY;
char txt[20] = "\nTX payload_";
sprintf (txt, strcat(txt, "%d"), 0);
nRF24_WriteRegister(nrf, nRF24_CMD_W_PAYLOAD, data, size, txt);
nRF24_PrintDetails(&nrfRadio);
SET_CE();
while(nrf->state == NRF_TX_BUSY); // THIS AND the following line should be in the callback I guess
RESET_CE();
}
I have printed the relevant registers' contents for debugging.
TX:
************* RESETTING ************* Reading Default Config: 0x00 ----------- 0x0e02 Setting CONFIG: 0x02008 ----------- 0x0e00 Reading Default Status: 0x0700 ----------- 0x0e0e Reading Default RF setup: 0x0600 ----------- 0x0e0a Setting default RF_SETUP: 0x0260e ----------- 0x0e00 Reading Default RF_CH: 0x0500 ----------- 0x0e00 Setting default RF_CH: 0x02602 ----------- 0x0e00 Reading FEATURE reg: 0x01d00 ----------- 0x0e04 Set default FTR_REG: 0x03d00 ----------- 0x0e00 Reading DPL_Px: 0x01c00 ----------- 0x0e01 Reset DPL_Px: 0x03c00 ----------- 0x0e00 TX address: 0x30d7d7d7d7d7 ----------- 0xe000 RX_DATA_PIPE0: 0x02201 ----------- 0x0e00 Reading EN_AA: _Indx: 4 Stream buffer: temp temP: 23 ********** Sending payload data 2 ************ Read Config register: 0x00 ----------- 0x0e02 Write Config register: 0x02002 ----------- 0x0e00 TX payload_0: 0x0a03233 ----------- 0x0e0000 ------------- PRINTING details -------- Config: 0x00 ----------- 0x0e02 RX_ADDR_P0: 0xa000 ----------- 0xed7d7d7d7d7 EN_AA: 0x0100 ----------- 0x0e3f TX_ADDR_REG: 0x10000 ----------- 0xed7d7d7d7d7 RF_Setup: 0x0600 ----------- 0x0e0a RF_CH Reg: 0x0500 ----------- 0x0e00 ADDRESS WIDTH: 0x0300 ----------- 0x0e03 OBSERVE_TX: 0x0800 ----------- 0x0e03 FEATURE_REG:_Indx: 4
RX:
================ SPI Configuration ================ CSN Pin = CE0 (PI Hardware Driven) CE Pin = Custom GPIO22 Clock Speed = 8 Mhz ================ NRF Configuration ================ STATUS = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0 RX_ADDR_P0-1 = 0xd7d7d7d7d7 0xc2c2c2c2c2 RX_ADDR_P2-5 = 0xc3 0xc4 0xc5 0xc6 TX_ADDR = 0xe7e7e7e7e7 RX_PW_P0-6 = 0x20 0x00 0x00 0x00 0x00 0x00 EN_AA = 0x3f EN_RXADDR = 0x03 RF_CH = 0x00 RF_SETUP = 0x0f CONFIG = 0x0a DYNPD/FEATURE = 0x3f 0x04 Data Rate = 2MBPS Model = nRF24L01+ CRC Length = 8 bits PA Power = PA_MAX Start listening on pipe 0
in the ISR, I see the status register's value is 0x1E - meaning the MAX RT is asserted?
