Problem with flashing to sparkfun nRF52832 using nRF52 DK for BLE_UART code?

[vishal]

Hello sir, I have develop my BLE_UART code is working fine with nRF52832 DK board but when i flash into spark fun nRF52 is not working. But i able to flash into Spark fun other code like BLE_APPS_hrs, led blinking and other also. Why i am not able to flash BLE_UART example or my own develop code into spark-fun board. I am using eclipse IDE is it any need to do setting in eclipse IDE for create correct hex file. because my code hex file size is 93KB.

Thnaks......

[Matt]

Can it be flow control lines not quite working on the sparkfun breakout board?

[vishal]

sir, how i check it flow control lines working or not in spark-fun board. I need to change in my BLE_UART code RX TX pin as per sparkfun board? In PCA10040 also UART that default pin i have set. please sir let me know how i can achive my application with sparkFun board instead od nRF52832 DK.

[Matt]

Do you have this line in your uart_init()

.flow_control = APP_UART_FLOW_CONTROL_ENABLED,

If so, try to disable it lie this

.flow_control = APP_UART_FLOW_CONTROL_DISABLED,

then test in PCA10040 to make sure the ble_uart code is still working (try a low baud like 57600), then flash it into the sparkfun breakout board and test.

As for the sparkfun breakout pin mapping for the uart tx and rx you need to consult the sparkfun experts; I believe they have a forum for those kind of questions?

[vishal]

Now first flow control is disabled but it not working when i change UART pin as per define in spark fun Schmatic and enable flow control is now working. But problem is sometime working or sometime not when i long press reset switch near about 3-4 sec on sparkfun it working. i am confused where exactly problem when i touch my finger on power supply capacitor or near by it get again working. What should i do how i can fix this issue. Thanks Matt for replying me..

[Matt]

May be some flaky power connection to your sparkfun breakout board? Cannot say what's wrong here without using a debugger or RTT to investigate. Have you checked with the sparkfun folks on this one?