Colin Monroe
Homework 8.1
Dependencies: MMA8451Q8 SLCD mbed
Revision 0:fbf7e19e0e61, committed 2017-03-06
- Comitter:
- CKMonroe
- Date:
- Mon Mar 06 21:22:11 2017 +0000
- Commit message:
- HW 8.1
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MMA8451Q8.lib Mon Mar 06 21:22:11 2017 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/CKMonroe/code/MMA8451Q8/#ebf150f92734
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SLCD.lib Mon Mar 06 21:22:11 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/Sissors/code/SLCD/#ef2b3b7f1b01
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/lcd_acc_46_v4-8g.cpp Mon Mar 06 21:22:11 2017 +0000
@@ -0,0 +1,210 @@
+#include "mbed.h"
+#include "MMA8451Q8.h"
+#include "SLCD.h"
+/*
+Test of the accelerometer, digital I/O, on-board LCD screen, and 16-bit ADC.
+
+ */
+
+#define BLINKTIME 0.7
+#define DATATIME 0.1
+#define DATADISPDWELL 0.2
+#define NUMLEDS 2
+#define LEDON 0
+#define LEDOFF 1
+#define SCALING 13
+#define RSTARTMESS "RSET"
+#define MAXVECT "MAXV"
+#define XCOMP "XCMP"
+#define YCOMP "YCMP"
+#define ZCOMP "ZCMP"
+#define ANALTOVOLTS 3.3
+#define LEDDELAY 0.400
+//define states
+#define NUMSTATES 4
+#define XCOMPD 0
+#define YCOMPD 1
+#define ZCOMPD 2
+#define VMAXD 3
+
+#define REG_WHO_AM_I 0x0D
+#define XYZ_DATA_CFG 0x0E
+
+#define MAX_2G 0x00
+#define MAX_4G 0x01
+#define MAX_8G 0x02
+
+#define PROGNAME "LCD_ACC_LCDv3 46\r/n"
+
+//#define PRINTDBUG
+// Accelerometer SPI pins
+#if defined (TARGET_KL25Z) || defined (TARGET_KL46Z)
+ PinName const SDA = PTE25;
+ PinName const SCL = PTE24;
+#elif defined (TARGET_KL05Z)
+ PinName const SDA = PTB4;
+ PinName const SCL = PTB3;
+#else
+ #error TARGET NOT DEFINED
+#endif
+
+#define MMA8451_I2C_ADDRESS (0x1d<<1)
+
+SLCD slcd; //define LCD display
+Timer blinkTimer;
+Timer dataTimer;
+Timer displayTimer;
+MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);
+AnalogIn TMP01(PTB1);
+DigitalOut LEDs[NUMLEDS]={LED_RED, LED_GREEN}; //Indicator LEDs
+Serial pc(USBTX, USBRX);
+
+
+void LCDMess(char *lMess, float dWait){
+ slcd.Home();
+ slcd.clear();
+ slcd.printf(lMess);
+ wait(dWait);
+}
+void LCDMessNoDwell(char *lMess){
+ slcd.Home();
+ slcd.clear();
+ slcd.printf(lMess);
+}
+
+
+void allLEDsOFF(int numberOfLEDS) {
+ int i;
+ for (i=0;i<numberOfLEDS; i++){
+ LEDs[i] = LEDOFF;
+ }
+
+}
+
+
+
+int main() {
+
+ int RButtonState;
+ int LButtonState;
+ DigitalIn RtButton(PTC12);
+ DigitalIn LftButton(PTC3);
+ int displayState = XCOMPD;
+ float xAcc = 0.0;
+ float yAcc = 0.0;
+ float zAcc = 0.0;
+ float vector;
+ float vMax = 0.0;
+ float DisplayTime = DATADISPDWELL;
+ int outState = false;
+ char lcdData[10]; //buffer needs places for decimal pt and colon
+ uint8_t regData = MAX_4G;
+
+
+#ifdef PRINTDBUG
+ pc.printf(PROGNAME);
+#endif
+ LCDMess(RSTARTMESS, BLINKTIME);
+// Initialze readings and sequence the LED's for dramtic effect.
+ allLEDsOFF(NUMLEDS);
+ blinkTimer.start();
+ blinkTimer.reset();
+ displayTimer.start();
+ displayTimer.reset();
+ dataTimer.start();
+ dataTimer.reset();
+
+// change sensititivity experimental
+// this is where the call to change the g limit is made.
+// switch this 2,4,or 8
+ acc.setGLimit(8);
+
+
+ acc.readRegs(XYZ_DATA_CFG, ®Data, 1);
+ sprintf (lcdData,"%d",regData);
+ LCDMess(lcdData,BLINKTIME);
+ acc.readRegs(REG_WHO_AM_I, ®Data, 1);
+ sprintf (lcdData,"%d",regData);
+ LCDMess(lcdData,BLINKTIME);
+
+// main loop forever
+ while(true) {
+
+// Handle user input for display selections
+ RButtonState = !RtButton; // button is pulled up so false is when button is pushed it's inverted to avoid confusion downstream
+ if (RButtonState){
+ vMax = 0.0; // Clear vMax
+ LCDMess(RSTARTMESS, BLINKTIME);
+ }
+ LButtonState = !LftButton;
+ if (LButtonState) { //Change data that is displayed
+ displayState = (displayState + 1) % NUMSTATES;
+ // Change to switch/case soon.
+ switch (displayState){
+ case XCOMPD: {
+ LCDMess(XCOMP,BLINKTIME);
+ break;
+ }
+ case YCOMPD: {
+ LCDMess(YCOMP,BLINKTIME);
+ break;
+ }
+ case ZCOMPD: {
+ LCDMess(ZCOMP,BLINKTIME);
+ break;
+ }
+ case VMAXD:{
+ LCDMess(MAXVECT,BLINKTIME);
+ break;
+ }
+ }// switch
+ }
+
+// --------------------------------------------
+ while (dataTimer.read() > DATATIME){
+// No offset
+ xAcc = abs(acc.getAccX());
+ yAcc = abs(acc.getAccY());
+ zAcc = abs(acc.getAccZ());
+ // Calulate vector sum of x,y and z reading.
+// vector = sqrt(pow(xAcc,2) + pow(zAcc,2));
+ vector = zAcc;
+ if (vector > vMax) {
+ vMax = vector;
+ }
+ dataTimer.reset();
+ }
+
+// Display the appropriate data on the LCD based upon what mode was chosen
+ while (displayTimer.read() > DisplayTime){
+ switch (displayState) {
+ case XCOMPD: {
+ sprintf (lcdData,"%4.3f",xAcc);
+ break;
+ }
+ case YCOMPD: {
+ sprintf (lcdData,"%4.3f",yAcc);
+ break;
+ }
+ case ZCOMPD: {
+ sprintf (lcdData,"%4.3f",zAcc);
+ break;
+ }
+ case VMAXD:{
+ sprintf (lcdData,"%4.3f",vMax);
+ break;
+ }
+ }
+ LCDMessNoDwell(lcdData);
+ displayTimer.reset();
+ } // displaytimer
+// Wait then do the whole thing again.
+// Alive LEDs
+ while(blinkTimer.read()> LEDDELAY) {
+ LEDs[0].write(outState);
+ LEDs[1].write(!outState);
+ outState = !outState;
+ blinkTimer.reset();
+ }
+ }//forever loop
+}// main
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Mar 06 21:22:11 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/04dd9b1680ae \ No newline at end of file