Hello all I am using nRF52382 I am using SEGGER Embedded studio for programing. I want to use pins 12 and 11 as Rx and Tx for UART. I changed the default pins to #define RX_PIN_NUMBER 12#define TX_PIN_NUMBER 11 in pca10040.h but it is not working.

RE: Hello all I am using nRF52382 I am using SEGGER Embedded studio for programing. I want to use pins 12 and 11 as Rx and Tx for UART. I changed the default pins to #define RX_PIN_NUMBER 12#define TX_PIN_NUMBER 11 in pca10040.h but it is not working.

VijayEswar — Mon, 14 Nov 2022 13:45:11 GMT

Hi PaSi

Im facing the exact same problem and im using the same TX and RX pins that youre using. Did you find a fix for the problem ? If so please help me out

Thank you in advance

RE: Hello all I am using nRF52382 I am using SEGGER Embedded studio for programing. I want to use pins 12 and 11 as Rx and Tx for UART. I changed the default pins to #define RX_PIN_NUMBER 12#define TX_PIN_NUMBER 11 in pca10040.h but it is not working.

PaSi — Wed, 05 May 2021 14:37:27 GMT

Hi Henry_Chou

pin 11 is used #define SER_CONN_CHIP_RESET_PIN 11 // Pin used to reset connectivity chip

I have commented it out

#define SPIM2_SCK_PIN 12 // SPI clock GPIO pin number.

I have commented it out

GPIO configuration. pin11, pin12 are not assigned by the other GPIOs.

RE: Hello all I am using nRF52382 I am using SEGGER Embedded studio for programing. I want to use pins 12 and 11 as Rx and Tx for UART. I changed the default pins to #define RX_PIN_NUMBER 12#define TX_PIN_NUMBER 11 in pca10040.h but it is not working.

PaSi — Wed, 05 May 2021 14:06:41 GMT

Hi Kenneth thank you for replying.

By not working i meant if i use the default pins provided in pca100401.h that is #define RX_PIN_NUMBER 8
#define TX_PIN_NUMBER 6 UART is transmitting the required message on hterm. But having used RX_PIN_NUMBER 12 #define TX_PIN_NUMBER 11 it is not transmitting the required message on hterm.

pin 11 is used #define SER_CONN_CHIP_RESET_PIN 11 // Pin used to reset connectivity chip

I have commented it out

#define SPIM2_SCK_PIN 12 // SPI clock GPIO pin number.

I have commented it out

RE: Hello all I am using nRF52382 I am using SEGGER Embedded studio for programing. I want to use pins 12 and 11 as Rx and Tx for UART. I changed the default pins to #define RX_PIN_NUMBER 12#define TX_PIN_NUMBER 11 in pca10040.h but it is not working.

Henry_Chou — Wed, 05 May 2021 08:47:43 GMT

Are you using the UART for RTT debug information? If yes,...please make sure the RX handler conflict issue. However,....You may check by the steps

1) sdk_config.h RX,TX pin definition is not declared by the other pins.

2) GPIO configuration. pin11, pin12 are never assigned by the other GPIOs.

3)To connect the pin11 for logic analyzer or digital scope to check TXD signal.

4) Make sure the baud rate clock source is exact.

RE: Hello all I am using nRF52382 I am using SEGGER Embedded studio for programing. I want to use pins 12 and 11 as Rx and Tx for UART. I changed the default pins to #define RX_PIN_NUMBER 12#define TX_PIN_NUMBER 11 in pca10040.h but it is not working.

Kenneth — Wed, 05 May 2021 07:50:20 GMT

"Not working" is a very vague description, if you build with Debug (and not Release) you may get some more information in case there is an assert somewhere. If I were to guess, I would suggest to add a pull-up on the RX pin, to ensure that this pin is not floating, since that will be interpreted as UART framing error, and the code may assert due to this.

Kenneth