ws2811_init failed with code -3 (Hardware revision is not supported) about rpi-ws2812-server HOT 10 OPEN

I've added the revisoon to the rpihw.c, can you try and see if it works.
Strange the revision number is not in the official documentation.
https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md

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Strange it is supposed to work... Or did they make a new revision?

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Ok found there is a V1.2 revision of Rpi 4, can you pull the changes and try recompile?

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I tried it with no success, same error

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Did you download and recompile the changes in rpihw.c ?
Can you check your Raspberry HW revision with command:
cat /proc/cpuinfo

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It looks like there are no V1.2 (Fake news)

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ws2811_init failed with code -3 (Hardware revision is not supported)

Can anyone advise on how to modify rpihw.c to work with the RPi below.

pi@raspberrypi:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

processor : 1
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

processor : 2
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

processor : 3
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 108.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

Hardware : BCM2711
Revision : c03114
Serial : 10000000458935bf
Model : Raspberry Pi 4 Model B Rev 1.4

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Thank Tom. Seems to be working now!

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Seems to be several revisions of compute module 4.
I have this one that gives .hwver = 0xc03140,

[Raspberry Pi Compute Module 4]
Wireless: yes
Ram: 4 GB
eMMC storage: 32 GB

pi@Pi-Noddy:~ $ cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 126.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

processor : 1
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 126.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

processor : 2
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 126.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

processor : 3
model name : ARMv7 Processor rev 3 (v7l)
BogoMIPS : 126.00
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd08
CPU revision : 3

Hardware : BCM2711
Revision : c03140
Serial : 10000000f7d987f1
Model : Raspberry Pi Compute Module 4 Rev 1.0

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Ok I'll have to add this to the rpihw.c file

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