Configuration UARTE with nrf52805 for ESB - Part 2

[Ilary]

My previous ticket is closed. I would need, but still help with the configuration of the pins. I report my last post.

Hello,
I did some tests with the oscilloscope directly connected to pins 21 and 18 of the nrf52805.
The transmission on pin 18 by the Stm8l works perfectly. The problem I encounter now is that nrf52805 I have the pull up instruction on this pin

 nrf_gpio_cfg_input(PIN_RXD,GPIO_PIN_CNF_PULL_Pullup);

but nothing happens when oscilloscopes.

It could be that I get the pin definition wrong initially

 #define UARTE_BASE           0x40002000
  #define PORTA_UARTE          ((NRF_UARTE_Type *) UARTE_BASE )
  #define PIN_TXD            21
  #define PIN_RXD            18

or the pull up configuration of pin 18, set as input and pin 21 as output?

 nrf_gpio_cfg_input(PIN_RXD,GPIO_PIN_CNF_PULL_Pullup);
     nrf_gpio_cfg_output(PIN_TXD);

[Ilary]

Sigurd said:

Ma mostra solo come è collegato sul lato del debugger, non come questo è ulteriormente collegato al tuo PCB.

I send you a photo of the part soldered on the pins but it is very chaotic because in addition to the connection to the debugger for nRF52 I also have the wires for the connection of the STM8

Sigurd said:

Hai apportato modifiche all'HW, cambiato alcuni cavi, ecc., che potrebbero spiegare perché improvvisamente non funziona?

no one except that a thread that had unsoldered on the side of my card was rewelded

Sigurd said:

Hai fatto funzionare nrfjprog? Cosa ha restituito "nrfjprog --deviceversion"?

no I tried the desktop version of which you had told me (programmer) that shows me a successful connection as regards the simple DK card but as soon as I connect my card gives me the error of which I sent you the screen