Revision 0:25d5a70b9be1, committed 2017-09-04

Comitter:

DieOma

Date:

Mon Sep 04 17:33:14 2017 +0000

Commit message:

This program reads Magnetsensor from Calliope to serial interface.; Normally Calliope ist compatible to Micro:Bit.; But for ACC, GYR and MAG this is not true.; So this is more or less a proof of concept.

Changed in this revision

diff -r 000000000000 -r 25d5a70b9be1 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Sep 04 17:33:14 2017 +0000
@@ -0,0 +1,91 @@
+#include "MicroBit.h"
+MicroBit uBit;
+PinName sda = PinName(p20);
+PinName scl = PinName(p19);
+MicroBitI2C myi2c = MicroBitI2C(sda,scl);
+
+
+// Mag hat Adress 0x10
+// zum Schreiben addr|0
+// zum Lesem addr|1
+// Angelehnt an https://github.com/ControlEverythingCommunity/BMX055/blob/master/C/BMX055.c
+// dort fehlt allerdings nach dem Software-Reset das Aktivieren des Mags
+char reg[1];
+int result[1];
+char config[2];
+char data[6] = {0};
+
+int main() {
+    uBit.init();   
+    
+    // soft reset 
+    config[0] = 0x4B;
+    config[1] = 0x83;
+    result[0] = myi2c.write(0x10<<1,config,2,true);
+    
+    
+     // mag enable(!)
+    config[0] = 0x4B;
+    config[1] = 0x01;
+    
+    result[0] = myi2c.write(0x10<<1,config,2,true);
+    // normal mode
+    config[0] = 0x4C;
+    config[1] = 0x00;
+    result[0] = myi2c.write(0x10<<1,config,2,true);
+    
+    // enable X,Y,Z- Axis
+    config[0] = 0x4E;
+    config[1] = 0x84;
+    result[0] = myi2c.write(0x10<<1,config,2,true);
+    
+    // No. of Repetitions for X-Y Axis = 9(0x04)
+    config[0] = 0x51;
+    config[1] = 0x04;
+    result[0] = myi2c.write(0x10<<1,config,2,true);
+    
+    // No. of Repetitions for Z-Axis = 15(0x0F)
+    config[0] = 0x52;
+    config[1] = 0x0F;
+    result[0] = myi2c.write(0x10<<1,config,2,true);
+    
+    uBit.sleep(1000);   
+   
+    reg[0] = 0x42; 
+    int xMag;
+    int yMag;
+    int zMag;
+    for (int z = 1;z<=10; z++ ){
+        result[0] = myi2c.write(0x10<<1,reg,1,true);
+        result[0] = myi2c.read(0x21,data,6);
+        //printf("reading: %d\r\n",  result[0]);
+        for (int index = 0; index < 6; index++){
+            printf("%d\n\r", data[index]);
+        }
+        xMag = (data[1] * 256 + (data[0] & 0xF8)) / 8;
+        if(xMag > 4095)
+        {
+            xMag -= 8192;
+        };
+    
+        yMag = (data[3] * 256 + (data[2] & 0xF8)) / 8;
+        if(yMag > 4095)
+        {
+            yMag -= 8192;
+        }
+        zMag = (data[5] * 256 + (data[4] & 0xFE)) / 2;
+        if(zMag > 16383)
+        {
+            zMag -= 32768;
+        }  
+        printf("data are %d\r\n %d\r\n %d\r\n", xMag,yMag,zMag);
+   
+        uBit.sleep(1000);
+        }
+        release_fiber();
+      
+    };
+    
+
+
+

diff -r 000000000000 -r 25d5a70b9be1 microbit.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/microbit.lib	Mon Sep 04 17:33:14 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/teams/Lancaster-University/code/microbit/#4b89e7e3494f