Hello, I have 4 NRF51822 modules, 2 stlink programmers, and a BLE400 board, I was using the same module with the same stlink each time, but the led on the board stopped lighting, after a flash, as I was testing different libraries I thought it was that, I tried to go back without success, then I tried another module, another stlink but nothing worked even if flash succeeds each time.
I supposed the board was broken, so I tried another more module without the board, the bluetooth worked before I flash but not after. I also tried to reflash the bootloader and a precompiled program with bluetooth feature, flashing succeed but the bluetooth doesn't work.
I don't know what to test, I need help.
Thank you