From 743ea61156bc60152e9f6b1274abb63603438859 Mon Sep 17 00:00:00 2001
From: Pete Lewis <601236+lewispg228@users.noreply.github.com>
Date: Mon, 29 Jul 2024 14:12:35 -0600
Subject: [PATCH] SPI pin-choice for micromod machine learning

When using micromod machine learning, different SPI pins must be used/defined.
---
 .../Example_01_SPI_RotationVector.ino                      | 7 +++++++
 .../Example_02_SPI_ResetCheck.ino                          | 7 +++++++
 examples/SPI/Example_03_SPI_Sleep/Example_03_SPI_Sleep.ino | 7 +++++++
 3 files changed, 21 insertions(+)

diff --git a/examples/SPI/Example_01_SPI_RotationVector/Example_01_SPI_RotationVector.ino b/examples/SPI/Example_01_SPI_RotationVector/Example_01_SPI_RotationVector.ino
index 3ebfdd9..6c4ed2d 100644
--- a/examples/SPI/Example_01_SPI_RotationVector/Example_01_SPI_RotationVector.ino
+++ b/examples/SPI/Example_01_SPI_RotationVector/Example_01_SPI_RotationVector.ino
@@ -63,6 +63,13 @@ BNO08x myIMU;
 #define BNO08X_INT  A4
 #define BNO08X_RST  A5
 
+// If using the MicroMod Machine Learning Carrier Board, use these pins:
+// for more info see https://github.com/sparkfun/SparkFun_BNO08x_Arduino_Library/issues/19
+//#define BNO08X_CS   PWM0
+//#define BNO08X_INT  D0 // Note, D0 is also the CS pin for the camera, so you'll need to change that if you're using both.
+// a good alternative for D0 is PWM1, (A0 and A1 are only inputs on the carrier board).
+//#define BNO08X_RST  D1
+
 void setup() {
   Serial.begin(115200);
   
diff --git a/examples/SPI/Example_02_SPI_ResetCheck/Example_02_SPI_ResetCheck.ino b/examples/SPI/Example_02_SPI_ResetCheck/Example_02_SPI_ResetCheck.ino
index bcef9ca..029f7a3 100644
--- a/examples/SPI/Example_02_SPI_ResetCheck/Example_02_SPI_ResetCheck.ino
+++ b/examples/SPI/Example_02_SPI_ResetCheck/Example_02_SPI_ResetCheck.ino
@@ -61,6 +61,13 @@ BNO08x myIMU;
 #define BNO08X_INT  A4
 #define BNO08X_RST  A5
 
+// If using the MicroMod Machine Learning Carrier Board, use these pins:
+// for more info see https://github.com/sparkfun/SparkFun_BNO08x_Arduino_Library/issues/19
+//#define BNO08X_CS   PWM0
+//#define BNO08X_INT  D0 // Note, D0 is also the CS pin for the camera, so you'll need to change that if you're using both.
+// a good alternative for D0 is PWM1, (A0 and A1 are only inputs on the carrier board).
+//#define BNO08X_RST  D1
+
 int cyclecount = 0;
 
 #define BNO08X_ADDR 0x4B  // SparkFun BNO08x Breakout (Qwiic) defaults to 0x4B
diff --git a/examples/SPI/Example_03_SPI_Sleep/Example_03_SPI_Sleep.ino b/examples/SPI/Example_03_SPI_Sleep/Example_03_SPI_Sleep.ino
index 1596ef2..17d3f0f 100644
--- a/examples/SPI/Example_03_SPI_Sleep/Example_03_SPI_Sleep.ino
+++ b/examples/SPI/Example_03_SPI_Sleep/Example_03_SPI_Sleep.ino
@@ -58,6 +58,13 @@ BNO08x myIMU;
 #define BNO08X_INT  A4
 #define BNO08X_RST  A5
 
+// If using the MicroMod Machine Learning Carrier Board, use these pins:
+// for more info see https://github.com/sparkfun/SparkFun_BNO08x_Arduino_Library/issues/19
+//#define BNO08X_CS   PWM0
+//#define BNO08X_INT  D0 // Note, D0 is also the CS pin for the camera, so you'll need to change that if you're using both.
+// a good alternative for D0 is PWM1, (A0 and A1 are only inputs on the carrier board).
+//#define BNO08X_RST  D1
+
 unsigned long lastMillis = 0;  // Keep track of time
 bool lastPowerState = true;    // Toggle between "On" and "Sleep"