Diff: Tap.cpp

Revision:

5:8582a28cf944

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Tap.cpp	Thu Jan 17 06:04:45 2019 +0000
@@ -0,0 +1,77 @@
+#include "Tap.h"
+
+I2C tapI2C(p9, p10);
+InterruptIn tapInterrupt(p5);
+char buff[2];
+const int accelAddr = 0x53 << 1;
+volatile int i;
+
+void tapsConfig(void) {  //configures the settings for the accelerometer (same settings as mini project 6 converted to I2C)
+    buff[0] = 0x1D;
+    buff[1] = 80;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[0] = 0x21;  
+    buff[1] = 0x10;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[0] = 0x22;
+    buff[1] = 0x05;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[0] = 0x23;
+    buff[1] = 0xFF;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[0] = 0x2A;
+    buff[1] = 0x07;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[0] = 0x2E;
+    buff[1] = 0x60;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[1] = 0x2F;
+    buff[0] = 0x60;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    buff[0] = 0x2D;
+    buff[1] = 0x08;
+    tapI2C.write(accelAddr, buff, 2);
+    wait(0.02);
+    tapInterrupt.rise(&tapsHappened);
+    tapsHappened(); // resets the interrupt, same as mini project 6
+}
+
+void tapsHappened(void) {
+    char tapByte;
+    bool absol = true;
+    bool unit = true;
+    buff[0]=0x30;
+    tapI2C.write(accelAddr,buff,1);
+    tapI2C.read(accelAddr,buff,1);
+    tapByte = buff[0]; // gets a value for tapByte
+    if (tapByte & 0x40) { //based on the value of tapByte, determines if there was a single or double tap
+        unit = !unit; // changes the value of unit and absol based on the number of taps
+    }
+    if (tapByte & 0x20) { 
+        absol = !absol;
+    }
+    if (unit == 1 && absol == 1) { /* based on the values of unit and absol, determines the value of i,
+    which is used to determine the units of the temperature displayed */
+        i = 0;
+    }
+    if (unit == 1 && absol == 0) {
+        i = 1;
+    }
+    if (unit == 0 && absol == 1) {
+        i = 2;
+    }
+    if (unit == 0 && absol == 0) {
+        i = 3;
+    }
+}
+int getSetting(int i){ /* the value of i is set in a void function (which must be void because it is an interrupt)
+This function is an int function that returns the value of i, allowing us to call it for the value of i from main.cpp */
+    return i;
+}
\ No newline at end of file