I am trying to use PN532 on nRF52840. Nordic SDK has an example Adafruit Tag Example but it is for nRF52832. I have ported the example but it fails in TWI Communication.
What did I do ?
- In makefile change every occurrence of pca10040 to pca10056
- In makefile change every occurrence of nRF52832 to nRF52840
- Copy sdk_config.h from TWI Scanner example to Adafruit Tag Example
Problems I am facing
LOG :
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<error> app: End of error report
<info> app: NFC EXAMPLE Adafruit tag reader started.
<info> adafruit_pn532: Creating I2C
<info> adafruit_pn532: Looking for PN532
<info> adafruit_pn532: Trying to get the firmware version
<info> adafruit_pn532: Trying to send command
<info> adafruit_pn532: 02 |.
<info> adafruit_pn532: Sending command
<info> adafruit_pn532: 00 00 FF 02 FE D4 02 2A|.......*
<info> adafruit_pn532: 00 |.
<info> adafruit_pn532: Failed while calling TWI tx 1, err_code = 33282
<info> adafruit_pn532: Failed to write command, err_code = 33282
<info> adafruit_pn532: Failed to send GetFirmwareVersion command, err_code = 33282
<info> adafruit_pn532: Didn't find PN53x board, err_code = 33282
<error> app: ERROR 33282 [NRF_ERROR_DRV_TWI_ERR_DNACK] at ../../../main.c:405
PC at: 0x00004D3B
<error> app: End of error report
I am not able to detect PN532. More precisely TWI command fails to send. The error received is NRF_ERROR_DRV_TWI_ERR_DNACK.
Another strange thing is that on pressing reset nRF doesn't log again.
