Problems with Programming nRF51822 customized board

[cookieeeeee]

Hi guys, me again.

I was very confused with my current process on developing with nrf chip now... so I would like to post my develop step and some problems I had so maybe you could give me some advises. I think I maybe stuck in my own circle.

I'm sorry to give such a long post here.

I have read through the tutorial about the nrf51 DK and BLE and many post about changing clock source for example. For the DK, I could successfully load the code to the DK, for example the UART transmission example and use my phone to communicate with it.

For the step for developing the DK, I first load the softdevice using command line tool, the softdevice I load to the DK is from SDK 12.2, s130, version is 2.0.1. Then I open the example in Keil, build up and then load to the DK, it was fine.

So, then I would like to try the code with my own board. First, I was using the nrf51822 module from Taiyo Yuden Inc, which the board them made doesn't have an external clock source, so I have changed the clock source to the internal RC clock source with the following code in example code in Keil5.

//set up clock source
 nrf_clock_lf_cfg_t rc_cfg = 
{
    .source = NRF_CLOCK_LF_SRC_RC,
    .rc_ctiv = 16,
    .rc_temp_ctiv = 2,
 };

// Initialize SoftDevice.
SOFTDEVICE_HANDLER_INIT(&rc_cfg, NULL);

For the board I'm using, please refer to the following image:

I connect the SWD interface to the Jlink and since the board doesn't have the reset and SWO, I only use the SWDIO and SWCLK to the Jlink. Then with the Jlink connected, I used command line tool to program the softdevice to this board. The command line tool shows the softdevice has been programmed.

Then I open the example in Keil5, for this time using the uart example also. I build and then load to the board.

After this, I open my phone and use the nordic app to scan the board, there is nothing. For my point, I was trying to see if I could program the board to be scanable and also can be connected with phone, then develop some other functionalities base on that, but I could not see the board.

Did I do anything wrong with the procedure?

---

That was what I have done with the Taiyo Yuden board. Since the board has all the pins under the chip, I thought maybe there is something wrong with my soldering, so I used another chip which all the pins are on the side of the board so I could see actually I have soldered them correctly. The board I'm using is this one.

For this board, I was trying some similar procedure.

I first used the nRFGo studio to program the softdevice, same version from the previous one.

Then I tried to load the example code from Keil, but I got an error that the Flash Downloaded fail. At first, the error says Flash Downloaded fail - could no open XXX\XXX\XXX.axf file. ....I was so confuse by now....

Another concern is that, if I change the device to the nrf51822_xxAA which I used with the board, the device became red and there is no update option to use for the files.

It was a long post, but I you have any idea which step I did wrong, please let me know.

Thanks

[cookieeeeee]

Thanks AmbystomaLabs, thing is I only had a breakout board with the BLE chip, there is no uart interface with my PC. I was trying to run some example code from SDK and make sure my board works and base on that set up some GPIO functions and interrupt functions and data transmission through the BLE. I just tried using the uart example with nRF Studio, the code works fine on the DK, but not on the BMD200 board. Do you think my step was wrong? Should I first try some GPIO example code, like just toggle a pinevery second and then put the BLE in? I had experience developing Atmel chips, and experience using the chip with RF or BLE. For the past, I would just connect for example the UART line from the BLE chip to the Atmel chip and by sending data from the Atmel to the BLE with UART, the data would be seen by the phone. But I don't have experience programming the BLE chip itself.