From f5243b66648802710d7c5b0ac0c2dda4a1bf8924 Mon Sep 17 00:00:00 2001 From: 3rd3 Date: Sat, 7 May 2022 19:41:56 +0200 Subject: [PATCH] Update README.md Add explanation for building on RPi Zero 2 W --- README.md | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 03a507e..d2a7c68 100644 --- a/README.md +++ b/README.md @@ -111,24 +111,33 @@ $ sudo apt-get install build-essential libelf-dev linux-headers-`uname -r` $ sudo apt-get install raspberrypi-kernel-headers ``` -Then run this step to change platform in Makefile, For RPI 1/2/3/ & 0/Zero: +Then change the platform in Makefile to 32-bit `ARM` architecture (RPi 1/2/3/ & 0/Zero): ``` $ sed -i 's/CONFIG_PLATFORM_I386_PC = y/CONFIG_PLATFORM_I386_PC = n/g' Makefile $ sed -i 's/CONFIG_PLATFORM_ARM_RPI = n/CONFIG_PLATFORM_ARM_RPI = y/g' Makefile ``` -But for RPI 3B+ & 4B you will need to run those below which builds the ARM64 arch driver: +Or, for `ARM64` (RPI 3B+, 4B and Zero2) you will need to run: ``` $ sed -i 's/CONFIG_PLATFORM_I386_PC = y/CONFIG_PLATFORM_I386_PC = n/g' Makefile $ sed -i 's/CONFIG_PLATFORM_ARM64_RPI = n/CONFIG_PLATFORM_ARM64_RPI = y/g' Makefile ``` -In addition, if you receive an error message about `unrecognized command line option ‘-mgeneral-regs-only’` (i.e., Raspbian Buster), you will need to run the following commands, then retry building and installing: +In addition, if you receive an error message about `unrecognized command line option ‘-mgeneral-regs-only’` (i.e., Raspbian Buster), you will need to run the following commands for `ARM` architecture, then retry building and installing: ``` $ export ARCH=arm $ sed -i 's/^MAKE="/MAKE="ARCH=arm\ /' dkms.conf ``` +Or, for `ARM64` run the following before re-building: + +``` +$ export ARCH=arm64 +$ sed -i 's/^MAKE="/MAKE="ARCH=arm64\ /' dkms.conf +``` + +Building the driver may exceed RAM on some RPi's resulting in a `gcc: fatal error: Killed signal terminated program cc1` error. Swap space can be increased in `/etc/dphys-swapfile` e.g. to `2000` megabytes, followed by `/etc/init.d/dphys-swapfile restart`. Building on swap is very slow, however. + For setting monitor mode 1. Fix problematic interference in monitor mode. ```