树莓派使用 WiringPi 报错 Unable to determine board revision from /proc/cpuinfo

最近更新于 2024-09-17 00:35

硬件：树莓派 CM4
系统：raspios 20240704 Debian 12 arm64（Linux Kernal 6.6.31+rpt-rpi-v8）
WiringPi：3.10

正确地安装步骤参考：

1.安装构建工具

sudo apt update
sudo apt install -y build-essential git

2.克隆源码

git clone https://github.com/WiringPi/WiringPi.git --depth=1 --branch=3.10
cd WiringPi

3.修改源码
这部分是增加的内容，也是解决标题报错的关键（来源参考：https://raspberrypi.stackexchange.com/questions/145031/wiringpi-giving-unable-to-determine-board-revision-from-proc-cpuinfo-error-af ）
整体复制粘粘执行

cat <<'PATCH' | patch --ignore-whitespace -p1 wiringPi/wiringPi.c
@@ -747,6 +747,7 @@ int piGpioLayout (void)
   if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
     piGpioLayoutOops ("Unable to open /proc/cpuinfo") ;

+#ifdef DONT_CARE_ANYMORE
 // Start by looking for the Architecture to make sure we're really running
 // on a Pi. I'm getting fed-up with people whinging at me because
 // they can't get it to work on weirdFruitPi boards...
@@ -769,7 +770,6 @@ int piGpioLayout (void)
 // I do not support so don't email me your bleating whinges about anything
 // other than a genuine Raspberry Pi.

-#ifdef DONT_CARE_ANYMORE
   if (! (strstr (line, "BCM2708") || strstr (line, "BCM2709") || strstr (line, "BCM2835")))
   {
     fprintf (stderr, "Unable to determine hardware version. I see: %s,\n", line) ;
PATCH

4.构建安装

bash INSTALL

5.测试

版本查看

gpio -v

接口查看

gpio readall