Myles Gibson
This code will read the data from the X,Y and Z axis of the MLX90393 Magnetometer and display it on a serial monitor. Remember to check the solder links on the I2C lines on your Nucleo as this can interfere on certain boards.
Diff: main.cpp
- Revision:
- 0:61c51438425a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Nov 21 22:27:05 2018 +0000
@@ -0,0 +1,58 @@
+#include "mbed.h"
+
+int addr = 0x0C <<1; // 8bit I2C address
+
+I2C i2c(PB_9 , PB_8); //sda, scl
+
+Serial pc(PA_2, PA_3); //Tx/Rx
+
+int main()
+{
+ char config [4];
+ char data[7] = {0};
+
+ config[0] = 0x60;
+ config[1] = 0x00;
+ config[2] = 0x5C;
+ config[3] = 0x00;
+
+ i2c.write(addr, config, 4, false);
+
+ i2c.read(addr, data, 1);
+
+ config[0] = 0x60;
+ config[1] = 0x02;
+ config[2] = 0xB4;
+ config[3] = 0x02;
+
+ i2c.write(addr, config, 4, false);
+
+ i2c.read(addr, data, 1);
+
+ wait(0.25);
+
+ while (1) {
+
+ config[0] = 0x3E; // Single measurement mode, ZYX enabled
+
+ i2c.write(addr, config, 1, false);
+ i2c.read(addr, data, 1);
+
+ wait(0.1);
+
+ config[0] = 0x4E;
+
+ i2c.write(addr, config, 1, false); // Read command, followed by ZYX bits set
+ i2c.read(addr, data, 7);
+
+ int xMag = ((data[1] * 256) + data[2]);
+ int yMag = ((data[3] * 256) + data[4]);
+ int zMag = ((data[5] * 256) + data[6]);
+
+ printf("X Axis = %d \n", xMag);
+ printf("Y Axis = %d \n", yMag);
+ printf("Z Axis = %d \n", zMag);
+
+ wait(5);
+ }
+}
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