bcm2835_init: gpio mmap failed: Cannot allocate memory bcm2835 init failed !!!

[Nithin kumar Guruswamy]

Hi Mike/All,

Driver version:I have the latest  bcm2835-1.68 installed.

Board: Raspberry Pi 4B

I am trying to run the test example given in 

https://github.com/waveshare/Pan-Tilt-HAT/tree/master/RaspberryPi/test

But I am getting error as both in non root and root mode

pi@raspberrypi:~/Pan-Tilt-HAT/RaspberryPi/test $ ./main

bcm2835_init: gpio mmap failed: Cannot allocate memory

bcm2835 init failed  !!! 

pi@raspberrypi:~/Pan-Tilt-HAT/RaspberryPi/test $ sudo ./main

bcm2835_init: gpio mmap failed: Cannot allocate memory

bcm2835 init failed  !!! 

pi@raspberrypi:~/Pan-Tilt-HAT/RaspberryPi/test $ 

Am I missing some patch?

Please help.

[Sam James]

Hi


Have you compiled from source or are you running the precompiled version downloaded from git?

Thanks

Sam

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[Nithin kumar Guruswamy]

Hi ,

For both version(precompiled and when I compile using make) I get the same error.

Thanks

[Sam James]

Hi Kumar

Can I ask with complier your using? Over the weekend I have found there are differences between the  c99-gcc and gcc-8 that might get your program working

S 

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