S140 Blinky example, program won't run to main, stuck at these...

[Mitch996]

Hello, my program stuck at these assembly codes:

I decided that it was stuck because I keep pressing F11 and it just go around in circles in these 4 lines.

So:

First, it wait for an event, I don't know what the event is.

Then it loads r4's content, which is 0x4000 0000, the peripheral base address, plus 0x104 into r0. I have no idea what should be inside 0x4000 0104.

Then it compares the content of 0x4000 0104, which was just loaded into r0, with zero. Apparently it is ZERO because:

if equal, the program will branch into 0x000099D6, which is the first line of the program.

I clearly configured something wrong to make the processor stuck in this loop, what it might be?

[RK]

well the documentation gives you the list of all registers so it's not very hard to work out what is at 0x40000104, just look it up. The CLOCK peripherals is (one of the several) at 0x40000000 base address and the 0x104 offset is EVENTS_LFCLKSTARTED

that's your answer, you're waiting for the LF clock to start.

[Mitch996]

This is what I got for searching "0104" (without quote of course) in the reference manual: image.ibb.co/.../Capture.png

Many thanks for your answer. On a side note, what does this mean? How to make it start/ make it "1"?

[RK]

well what in your own code is starting the LF clock and thus waiting for it to start?