nRFL24LE1, nRF24L01+ interoperability

[mr_creosote]

Hi, I have an nRF24LE1 based sensor, transmitting to an nR24L01+ connected to an arduino (i know you don't supportit). I have LE1 to LE1 TX/RX working (as a test case). I'm using the RF24 arduino library, which shows the L01+ status as shown below (reading is set to pipe 1):

nRF24L01+:

STATUS = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0

RX_ADDR_P0-1 = 0x6c706d6953 0xe7e7e7e7e7

RX_ADDR_P2-5 = 0xc3 0xc4 0xc5 0xc6

TX_ADDR = 0x6c706d6953

RX_PW_P0-6 = 0x20 0x20 0x00 0x00 0x00 0x00

EN_AA = 0x3f

EN_RXADDR = 0x02

RF_CH = 0x4c

RF_SETUP = 0x27

CONFIG = 0x0a

DYNPD/FEATURE = 0x00 0x00

Data Rate = 250KBPS

Model = nRF24L01+

CRC Length = 8 bits

PA Power = PA_MAX

The config of the LE1 is:

  char xmsg[32];

  uint8_t adr[6] = {0xE7,0xE7,0xE7,0xE7,0xE7,0xE7} ;

  hal_nrf_set_rf_channel(0x4c);

  hal_nrf_set_crc_mode(HAL_NRF_CRC_8BIT);

  hal_nrf_set_auto_retr(3U, 750);

  hal_nrf_set_output_power(RF_POWER_DB);

  hal_nrf_set_address_width(5);

  hal_nrf_set_address(HAL_NRF_TX, adr);

  hal_nrf_set_datarate(HAL_NRF_1MBPS);

What am i doing wrong?

Thanks,

Mahesh

[Kenneth]

Hi Mahesh,

In cases like these I always recommend to go for the minimum configuration to achieve communication, and then work from there.

- The minimum configuration on a PRX is to set the operation mode to RX and the rx payload width of pipe0 to specific length (e.g. 3), then write PWR_UP bit to 1 (wait ~2ms), and set CE to 1.

- The minimum configuration on a PTX is write PWR_UP bit to 1 (wait ~2ms), then write the TX payload with a specific length (e.g. 3), and toggle CE to start transmission.

I do notice in your case it seems that data rate is different between LE1 and L01, but in any case good to start with the minimum configuration.

Best regards,

Kenneth