Fixed the Compute Module 4 pin mode setting.

Return error from `softPwmCreate` if `pthread_create` fails

If `pthread_create` fails, `newPin` will never get reset to -1 and process would hang. This change will return from `softPwmCreate` immediately if  `pthread_create` returns a non-zero value and avoid hanging forever.

LIBS have to come after OBJ files for recent GCC

Fix build warnings

wiringPi.c:1328:21: warning: ‘digitalWrite8Dummy’ defined but not used [-Wunused-function]
 1328 | static         void digitalWrite8Dummy       (UNU struct wiringPiNodeStruct *node, UNU int pin, UNU int value) { return ; }
      |                     ^~~~~~~~~~~~~~~~~~
wiringPi.c:1327:21: warning: ‘digitalRead8Dummy’ defined but not used [-Wunused-function]
 1327 | static unsigned int digitalRead8Dummy        (UNU struct wiringPiNodeStruct *node, UNU int UNU pin)            { return 0 ; }
      |                     ^~~~~~~~~~~~~~~~~

The related nodes at line 1360 and 1362 have been commented before.

Signed-off-by: MichaIng <micha@dietpi.com>

Replaces a bare wait() with waitpid() to only wait on the just-forked process.

Remove projects@drogon.net contact from build

GitHub Actions

* Fix for multiple definition of comDat

Add piMemorySize for rpi4 8G

Add support for Pi 400 and CM4

Remove hard-coded destination paths for debian package creation.

Make external CC declaration possible

Add piMemorySize for rpi4b

#include <stdio.h>

int main()
{
	int bRev, bType, bProc, bMfg, bMem, bWarranty ;
	int revision = 12595474; //Convert hexadecimal to decimal
	bRev      = (revision & (0x0F <<  0)) >>  0 ;
        bType     = (revision & (0xFF <<  4)) >>  4 ;
        bProc     = (revision & (0x0F << 12)) >> 12 ;	// Not used for now.
        bMfg      = (revision & (0x0F << 16)) >> 16 ;
        bMem      = (revision & (0x07 << 20)) >> 20 ;
       bWarranty = (revision & (0x03 << 24)) != 0 ;
       printf ("piBoardId: rev: %d, type: %d, proc: %d, mfg: %d, mem: %d, warranty: %d\n",
		bRev, bType, bProc, bMfg, bMem, bWarranty) ;

   return 0;
}

/* revision see https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md 
*RPI revision is HEX.*\

Keeping compatibility of hardware clock of Pi 4 with earlier versions.

With Gordon ending development of WiringPi, this repository needs to reflect the situation accurately and differentiate between Gordon's final code release and updates made since then.

Add support for Raspberry Pi 4B

Now that the upstream maintainer has abandoned this project without
establishing another maintainer, its difficult to choose an appropriate
version number. Going with 2.60 for now, as this only has incremental
changes to support 4B.

Based on this raspi-gpio commit[1] the 2711 chip uses a different method
for pull up/down. This change implements that same method.

With this change, wiringPi now works for the Pi4B with the subset of
functionality used by zynthian.

[1] 80fa7d04ea?diff=unified

This change make the following commands correctly detect the 4B
however there may be an issue with reading GPIO inputs on the 4B
as they are always returning zero.

The aim of this change is to be the source-equivalent of the binary
package release 2.52[1] which was the last release before upstream
development ceased.

[1] http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b/

Sourced from http://archive.ubuntu.com/ubuntu/pool/universe/w/wiringpi/wiringpi_2.50.orig.tar.gz

Added gpio readall support for the Pi 0W.

Added fixed for a few minor things. pin driver for rht03/dht type
sensors. Network stuff is experimental - for now.