How can I change rx tx pins of BT840F?

Question

I m using sdk16.0.0 nrf52-ble-app-uart-c-multilink example. I want to comminication arduino btw BT840F. I try with nrf52840 there is no problem but when i use bt840f i didn't read data.

// <o> HCI_UART_RX_PIN - UART RX pin
#ifndef HCI_UART_RX_PIN
#define HCI_UART_RX_PIN 3 //8
#endif

// <o> HCI_UART_TX_PIN - UART TX pin
#ifndef HCI_UART_TX_PIN
#define HCI_UART_TX_PIN 10 //6
#endif

I changed pins but i am not sure the numbers. I am tring to use p03 and p10 pins of BT840F. Can you tell me what is my mistake ?

Edvin · Accepted Answer

P0.01 (and P0.00) is usually the LFXTAL (if present), so try to stay away from that one as well. 
 If you still do not see it, try analyzing the pins with a logic analyzer. Do you see any UART data in the logic trace? 
 Is the data you are missing coming to the nRF52840, or are you trying to send it? Do you have HWFC enabled? 
 
 BR, Edvin

brkcnfzl · Answer

Thank you so much Edvin. I changed pins and it worked. HWFC is disable.

awneil · Answer

brkcnfzl said: BT840F 
 You mean this: https://www.fanstel.com/bt840 ? 
 Note that Fanstel is an independent 3rd party; so you need to go to them for specific support with their modules - eg, if they impose any restrictions on pin usage. 
 Have you checked the Fanstel documentation? 
 brkcnfzl said: i am not sure the numbers 
 You would have to confirm that with Fanstel - doesn't their documentation tell you the relationship between the module pins and the nRF52840 pins?

How can I change rx tx pins of BT840F?

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