Op 07-03-16 om 20:11 schreef Mark Morgan Lloyd:
Koenraad Lelong wrote:
Hi,
I'm trying to configure a PWM-pin on the raspberry pi 2. I'm using
pigpio, with the demo-program.
I configured pin 12 (GPIO 18) to be a PWM pin.
When I click the PWM-button on the demo-program, the pi hangs. I have
to power-cycle to "recover".
I modified this:
REG_GPIO = $3F000;
and this :
fd := fpopen('/dev/gpiomem', O_RdWr or O_Sync); // Open the master
/dev/memory device
I'm trying to debug this :
delayNanoseconds(200); <-- breakpoint
pwmf := Pointer(LongWord(Self.FPwm)+PWM0_RANGE);
pwmf^ := $400 ; //max: 1023
delayNanoseconds(200);
pwmf := Pointer(LongWord(Self.FPwm)+PWM1_RANGE);
pwmf^ := $400 ; //max: 1023
delayNanoseconds(200);
Stepping further with F8.
When I press F8 on the first
pwmf^ := $400;
the code "singe steps" automatically, but after a number of steps the
application crashes and the pi hangs.
This is different from normally running the application where the
application just hangs after pressing the PWM-button.
Input and output works fine, as user "pi".
Two things: first, Bo on 8th Oct mentioned that he'd had to modify
pigpio.pas to make it compatible with the RPi2. Second, how are you
physically driving the system, my experience is that remote access can
be less reliable than using the directly connected screen and keyboard
particularly when single-stepping.
I think the modifications I mentioned are what is needed (in and out works).
I did all this on the pi itself, no remote.
Koenraad.
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