From e73bcac8c7b1b560428bb0c43ce1b1ff296d4de8 Mon Sep 17 00:00:00 2001
From: Daniel-Foley <143452385+Daniel-Foley@users.noreply.github.com>
Date: Wed, 30 Aug 2023 11:15:28 -0500
Subject: [PATCH] Added CM4 model check to IsPi4 (#2125)

CM4 needs to be handled the same way as a pi4. Right now, due to the device model of a CM4 being "Raspberry Pi Computer Module 4" it is being treated as a pi3. This causes a problem with the pin mapping and prevents the CM4 from having it's input/output and pullup/pulldown changed on OpenPin().
---
 .../System/Device/Gpio/Drivers/RaspberryPi3LinuxDriver.cs       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/System.Device.Gpio/System/Device/Gpio/Drivers/RaspberryPi3LinuxDriver.cs b/src/System.Device.Gpio/System/Device/Gpio/Drivers/RaspberryPi3LinuxDriver.cs
index 227d4fed..3c731c86 100644
--- a/src/System.Device.Gpio/System/Device/Gpio/Drivers/RaspberryPi3LinuxDriver.cs
+++ b/src/System.Device.Gpio/System/Device/Gpio/Drivers/RaspberryPi3LinuxDriver.cs
@@ -722,7 +722,7 @@ internal unsafe class RaspberryPi3LinuxDriver : GpioDriver
                 if (File.Exists(ModelFilePath))
                 {
                     string model = File.ReadAllText(ModelFilePath, Text.Encoding.ASCII);
-                    if (model.Contains("Raspberry Pi 4"))
+                    if (model.Contains("Raspberry Pi 4") || model.Contains("Raspberry Pi Compute Module 4"))
                     {
                         IsPi4 = true;
                     }
-- 
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