LED not blinking

[RJD]

for (int i = 0; i < LEDS_NUMBER; i++)
{
bsp_board_led_off(0);
nrf_delay_ms(500);
bsp_board_led_on(0);

}

in this code only the first command gets executed. 

It turns off and remains in that state, if bsp_board_led_off(0) is replaced with bsp_board_led_on(0), then it remains on. I tried with multiple bsp_board_led_invert(0); but still no success. it just executes the 1st time. Has been a recurring issue

[awneil]

So have you used the debugger to see what's actually happening ?

[RJD]

there are no errors in the code, syntactical

[awneil]

It wouldn't compile if there were!

But that's not what I asked.

Have you used the debugger in the running code? ie, have you stepped through the code to see what is actually happening in the chip?

I think you have a logical error (omission) - what you've written isn't actually (quite) what you want ...

[RJD]

Hello Awneil,

I have not used the debugger. I use a linux emulator and gnu arm compiler.

what would be a way to check the debugged code

[awneil]

Have you used an oscilloscope or logic analyser to see what's happening on the pin?

By "emulator" do you mean a pure software simulator, or a debug probe - such as a J-Link.

Even with a pure software simulator, you should be able to single-step - and see what you're missing.

But, In this day and age, there is really no reason not to be using a proper debugger with the debug facilities of the chip - even on Linux.

Segger Embedded Studio (SES) runs on Windows, macOS, and Linux.

EDIT

try "unrolling" the loop ...

ie, write out longhand the sequence of statements that actually gets executed