Diff: lcd_acc_46_v4-8g.cpp

Revision:

0:fbf7e19e0e61

--- /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, &regData, 1);
+    sprintf (lcdData,"%d",regData);
+    LCDMess(lcdData,BLINKTIME);
+    acc.readRegs(REG_WHO_AM_I, &regData, 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