use sd_flash_page_erase then system reset

[rsj]

when i use sd_flash_page_erase() the system reset

[Jørgen Holmefjord]

Have you enabled the softdevice? Please try debugging, to see what function call is causing an error, and what the returned error code is.

[rsj]

when I use the function sd_flash_page_erase() then the system reset,can't know the return value。 the problem happened in bootloader code ,in application code the function sd_flash_page_erase() is right

ret = sd_flash_page_erase(120);

[Jørgen Holmefjord]

Where in the bootloader code are you calling this? You should make sure the softdevice is initialized before calling softdevice functions (functions with sd_ prefix). Which address are you trying to erase? Make sure you do not erase any pages containing your application, bootloader, etc.

[Jørgen Holmefjord]

I can't see any call to sd_flash_page_erase() in your screenshot. Where are you calling it? Are you checking the return value from the function call? Is 120 you page number input? What are you trying to erase?