Homework 8.1
Dependencies: MMA8451Q8 SLCD mbed
lcd_acc_46_v4-8g.cpp@0:fbf7e19e0e61, 2017-03-06 (annotated)
- Committer:
- CKMonroe
- Date:
- Mon Mar 06 21:22:11 2017 +0000
- Revision:
- 0:fbf7e19e0e61
HW 8.1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
CKMonroe | 0:fbf7e19e0e61 | 1 | #include "mbed.h" |
CKMonroe | 0:fbf7e19e0e61 | 2 | #include "MMA8451Q8.h" |
CKMonroe | 0:fbf7e19e0e61 | 3 | #include "SLCD.h" |
CKMonroe | 0:fbf7e19e0e61 | 4 | /* |
CKMonroe | 0:fbf7e19e0e61 | 5 | Test of the accelerometer, digital I/O, on-board LCD screen, and 16-bit ADC. |
CKMonroe | 0:fbf7e19e0e61 | 6 | |
CKMonroe | 0:fbf7e19e0e61 | 7 | */ |
CKMonroe | 0:fbf7e19e0e61 | 8 | |
CKMonroe | 0:fbf7e19e0e61 | 9 | #define BLINKTIME 0.7 |
CKMonroe | 0:fbf7e19e0e61 | 10 | #define DATATIME 0.1 |
CKMonroe | 0:fbf7e19e0e61 | 11 | #define DATADISPDWELL 0.2 |
CKMonroe | 0:fbf7e19e0e61 | 12 | #define NUMLEDS 2 |
CKMonroe | 0:fbf7e19e0e61 | 13 | #define LEDON 0 |
CKMonroe | 0:fbf7e19e0e61 | 14 | #define LEDOFF 1 |
CKMonroe | 0:fbf7e19e0e61 | 15 | #define SCALING 13 |
CKMonroe | 0:fbf7e19e0e61 | 16 | #define RSTARTMESS "RSET" |
CKMonroe | 0:fbf7e19e0e61 | 17 | #define MAXVECT "MAXV" |
CKMonroe | 0:fbf7e19e0e61 | 18 | #define XCOMP "XCMP" |
CKMonroe | 0:fbf7e19e0e61 | 19 | #define YCOMP "YCMP" |
CKMonroe | 0:fbf7e19e0e61 | 20 | #define ZCOMP "ZCMP" |
CKMonroe | 0:fbf7e19e0e61 | 21 | #define ANALTOVOLTS 3.3 |
CKMonroe | 0:fbf7e19e0e61 | 22 | #define LEDDELAY 0.400 |
CKMonroe | 0:fbf7e19e0e61 | 23 | //define states |
CKMonroe | 0:fbf7e19e0e61 | 24 | #define NUMSTATES 4 |
CKMonroe | 0:fbf7e19e0e61 | 25 | #define XCOMPD 0 |
CKMonroe | 0:fbf7e19e0e61 | 26 | #define YCOMPD 1 |
CKMonroe | 0:fbf7e19e0e61 | 27 | #define ZCOMPD 2 |
CKMonroe | 0:fbf7e19e0e61 | 28 | #define VMAXD 3 |
CKMonroe | 0:fbf7e19e0e61 | 29 | |
CKMonroe | 0:fbf7e19e0e61 | 30 | #define REG_WHO_AM_I 0x0D |
CKMonroe | 0:fbf7e19e0e61 | 31 | #define XYZ_DATA_CFG 0x0E |
CKMonroe | 0:fbf7e19e0e61 | 32 | |
CKMonroe | 0:fbf7e19e0e61 | 33 | #define MAX_2G 0x00 |
CKMonroe | 0:fbf7e19e0e61 | 34 | #define MAX_4G 0x01 |
CKMonroe | 0:fbf7e19e0e61 | 35 | #define MAX_8G 0x02 |
CKMonroe | 0:fbf7e19e0e61 | 36 | |
CKMonroe | 0:fbf7e19e0e61 | 37 | #define PROGNAME "LCD_ACC_LCDv3 46\r/n" |
CKMonroe | 0:fbf7e19e0e61 | 38 | |
CKMonroe | 0:fbf7e19e0e61 | 39 | //#define PRINTDBUG |
CKMonroe | 0:fbf7e19e0e61 | 40 | // Accelerometer SPI pins |
CKMonroe | 0:fbf7e19e0e61 | 41 | #if defined (TARGET_KL25Z) || defined (TARGET_KL46Z) |
CKMonroe | 0:fbf7e19e0e61 | 42 | PinName const SDA = PTE25; |
CKMonroe | 0:fbf7e19e0e61 | 43 | PinName const SCL = PTE24; |
CKMonroe | 0:fbf7e19e0e61 | 44 | #elif defined (TARGET_KL05Z) |
CKMonroe | 0:fbf7e19e0e61 | 45 | PinName const SDA = PTB4; |
CKMonroe | 0:fbf7e19e0e61 | 46 | PinName const SCL = PTB3; |
CKMonroe | 0:fbf7e19e0e61 | 47 | #else |
CKMonroe | 0:fbf7e19e0e61 | 48 | #error TARGET NOT DEFINED |
CKMonroe | 0:fbf7e19e0e61 | 49 | #endif |
CKMonroe | 0:fbf7e19e0e61 | 50 | |
CKMonroe | 0:fbf7e19e0e61 | 51 | #define MMA8451_I2C_ADDRESS (0x1d<<1) |
CKMonroe | 0:fbf7e19e0e61 | 52 | |
CKMonroe | 0:fbf7e19e0e61 | 53 | SLCD slcd; //define LCD display |
CKMonroe | 0:fbf7e19e0e61 | 54 | Timer blinkTimer; |
CKMonroe | 0:fbf7e19e0e61 | 55 | Timer dataTimer; |
CKMonroe | 0:fbf7e19e0e61 | 56 | Timer displayTimer; |
CKMonroe | 0:fbf7e19e0e61 | 57 | MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS); |
CKMonroe | 0:fbf7e19e0e61 | 58 | AnalogIn TMP01(PTB1); |
CKMonroe | 0:fbf7e19e0e61 | 59 | DigitalOut LEDs[NUMLEDS]={LED_RED, LED_GREEN}; //Indicator LEDs |
CKMonroe | 0:fbf7e19e0e61 | 60 | Serial pc(USBTX, USBRX); |
CKMonroe | 0:fbf7e19e0e61 | 61 | |
CKMonroe | 0:fbf7e19e0e61 | 62 | |
CKMonroe | 0:fbf7e19e0e61 | 63 | void LCDMess(char *lMess, float dWait){ |
CKMonroe | 0:fbf7e19e0e61 | 64 | slcd.Home(); |
CKMonroe | 0:fbf7e19e0e61 | 65 | slcd.clear(); |
CKMonroe | 0:fbf7e19e0e61 | 66 | slcd.printf(lMess); |
CKMonroe | 0:fbf7e19e0e61 | 67 | wait(dWait); |
CKMonroe | 0:fbf7e19e0e61 | 68 | } |
CKMonroe | 0:fbf7e19e0e61 | 69 | void LCDMessNoDwell(char *lMess){ |
CKMonroe | 0:fbf7e19e0e61 | 70 | slcd.Home(); |
CKMonroe | 0:fbf7e19e0e61 | 71 | slcd.clear(); |
CKMonroe | 0:fbf7e19e0e61 | 72 | slcd.printf(lMess); |
CKMonroe | 0:fbf7e19e0e61 | 73 | } |
CKMonroe | 0:fbf7e19e0e61 | 74 | |
CKMonroe | 0:fbf7e19e0e61 | 75 | |
CKMonroe | 0:fbf7e19e0e61 | 76 | void allLEDsOFF(int numberOfLEDS) { |
CKMonroe | 0:fbf7e19e0e61 | 77 | int i; |
CKMonroe | 0:fbf7e19e0e61 | 78 | for (i=0;i<numberOfLEDS; i++){ |
CKMonroe | 0:fbf7e19e0e61 | 79 | LEDs[i] = LEDOFF; |
CKMonroe | 0:fbf7e19e0e61 | 80 | } |
CKMonroe | 0:fbf7e19e0e61 | 81 | |
CKMonroe | 0:fbf7e19e0e61 | 82 | } |
CKMonroe | 0:fbf7e19e0e61 | 83 | |
CKMonroe | 0:fbf7e19e0e61 | 84 | |
CKMonroe | 0:fbf7e19e0e61 | 85 | |
CKMonroe | 0:fbf7e19e0e61 | 86 | int main() { |
CKMonroe | 0:fbf7e19e0e61 | 87 | |
CKMonroe | 0:fbf7e19e0e61 | 88 | int RButtonState; |
CKMonroe | 0:fbf7e19e0e61 | 89 | int LButtonState; |
CKMonroe | 0:fbf7e19e0e61 | 90 | DigitalIn RtButton(PTC12); |
CKMonroe | 0:fbf7e19e0e61 | 91 | DigitalIn LftButton(PTC3); |
CKMonroe | 0:fbf7e19e0e61 | 92 | int displayState = XCOMPD; |
CKMonroe | 0:fbf7e19e0e61 | 93 | float xAcc = 0.0; |
CKMonroe | 0:fbf7e19e0e61 | 94 | float yAcc = 0.0; |
CKMonroe | 0:fbf7e19e0e61 | 95 | float zAcc = 0.0; |
CKMonroe | 0:fbf7e19e0e61 | 96 | float vector; |
CKMonroe | 0:fbf7e19e0e61 | 97 | float vMax = 0.0; |
CKMonroe | 0:fbf7e19e0e61 | 98 | float DisplayTime = DATADISPDWELL; |
CKMonroe | 0:fbf7e19e0e61 | 99 | int outState = false; |
CKMonroe | 0:fbf7e19e0e61 | 100 | char lcdData[10]; //buffer needs places for decimal pt and colon |
CKMonroe | 0:fbf7e19e0e61 | 101 | uint8_t regData = MAX_4G; |
CKMonroe | 0:fbf7e19e0e61 | 102 | |
CKMonroe | 0:fbf7e19e0e61 | 103 | |
CKMonroe | 0:fbf7e19e0e61 | 104 | #ifdef PRINTDBUG |
CKMonroe | 0:fbf7e19e0e61 | 105 | pc.printf(PROGNAME); |
CKMonroe | 0:fbf7e19e0e61 | 106 | #endif |
CKMonroe | 0:fbf7e19e0e61 | 107 | LCDMess(RSTARTMESS, BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 108 | // Initialze readings and sequence the LED's for dramtic effect. |
CKMonroe | 0:fbf7e19e0e61 | 109 | allLEDsOFF(NUMLEDS); |
CKMonroe | 0:fbf7e19e0e61 | 110 | blinkTimer.start(); |
CKMonroe | 0:fbf7e19e0e61 | 111 | blinkTimer.reset(); |
CKMonroe | 0:fbf7e19e0e61 | 112 | displayTimer.start(); |
CKMonroe | 0:fbf7e19e0e61 | 113 | displayTimer.reset(); |
CKMonroe | 0:fbf7e19e0e61 | 114 | dataTimer.start(); |
CKMonroe | 0:fbf7e19e0e61 | 115 | dataTimer.reset(); |
CKMonroe | 0:fbf7e19e0e61 | 116 | |
CKMonroe | 0:fbf7e19e0e61 | 117 | // change sensititivity experimental |
CKMonroe | 0:fbf7e19e0e61 | 118 | // this is where the call to change the g limit is made. |
CKMonroe | 0:fbf7e19e0e61 | 119 | // switch this 2,4,or 8 |
CKMonroe | 0:fbf7e19e0e61 | 120 | acc.setGLimit(8); |
CKMonroe | 0:fbf7e19e0e61 | 121 | |
CKMonroe | 0:fbf7e19e0e61 | 122 | |
CKMonroe | 0:fbf7e19e0e61 | 123 | acc.readRegs(XYZ_DATA_CFG, ®Data, 1); |
CKMonroe | 0:fbf7e19e0e61 | 124 | sprintf (lcdData,"%d",regData); |
CKMonroe | 0:fbf7e19e0e61 | 125 | LCDMess(lcdData,BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 126 | acc.readRegs(REG_WHO_AM_I, ®Data, 1); |
CKMonroe | 0:fbf7e19e0e61 | 127 | sprintf (lcdData,"%d",regData); |
CKMonroe | 0:fbf7e19e0e61 | 128 | LCDMess(lcdData,BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 129 | |
CKMonroe | 0:fbf7e19e0e61 | 130 | // main loop forever |
CKMonroe | 0:fbf7e19e0e61 | 131 | while(true) { |
CKMonroe | 0:fbf7e19e0e61 | 132 | |
CKMonroe | 0:fbf7e19e0e61 | 133 | // Handle user input for display selections |
CKMonroe | 0:fbf7e19e0e61 | 134 | RButtonState = !RtButton; // button is pulled up so false is when button is pushed it's inverted to avoid confusion downstream |
CKMonroe | 0:fbf7e19e0e61 | 135 | if (RButtonState){ |
CKMonroe | 0:fbf7e19e0e61 | 136 | vMax = 0.0; // Clear vMax |
CKMonroe | 0:fbf7e19e0e61 | 137 | LCDMess(RSTARTMESS, BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 138 | } |
CKMonroe | 0:fbf7e19e0e61 | 139 | LButtonState = !LftButton; |
CKMonroe | 0:fbf7e19e0e61 | 140 | if (LButtonState) { //Change data that is displayed |
CKMonroe | 0:fbf7e19e0e61 | 141 | displayState = (displayState + 1) % NUMSTATES; |
CKMonroe | 0:fbf7e19e0e61 | 142 | // Change to switch/case soon. |
CKMonroe | 0:fbf7e19e0e61 | 143 | switch (displayState){ |
CKMonroe | 0:fbf7e19e0e61 | 144 | case XCOMPD: { |
CKMonroe | 0:fbf7e19e0e61 | 145 | LCDMess(XCOMP,BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 146 | break; |
CKMonroe | 0:fbf7e19e0e61 | 147 | } |
CKMonroe | 0:fbf7e19e0e61 | 148 | case YCOMPD: { |
CKMonroe | 0:fbf7e19e0e61 | 149 | LCDMess(YCOMP,BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 150 | break; |
CKMonroe | 0:fbf7e19e0e61 | 151 | } |
CKMonroe | 0:fbf7e19e0e61 | 152 | case ZCOMPD: { |
CKMonroe | 0:fbf7e19e0e61 | 153 | LCDMess(ZCOMP,BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 154 | break; |
CKMonroe | 0:fbf7e19e0e61 | 155 | } |
CKMonroe | 0:fbf7e19e0e61 | 156 | case VMAXD:{ |
CKMonroe | 0:fbf7e19e0e61 | 157 | LCDMess(MAXVECT,BLINKTIME); |
CKMonroe | 0:fbf7e19e0e61 | 158 | break; |
CKMonroe | 0:fbf7e19e0e61 | 159 | } |
CKMonroe | 0:fbf7e19e0e61 | 160 | }// switch |
CKMonroe | 0:fbf7e19e0e61 | 161 | } |
CKMonroe | 0:fbf7e19e0e61 | 162 | |
CKMonroe | 0:fbf7e19e0e61 | 163 | // -------------------------------------------- |
CKMonroe | 0:fbf7e19e0e61 | 164 | while (dataTimer.read() > DATATIME){ |
CKMonroe | 0:fbf7e19e0e61 | 165 | // No offset |
CKMonroe | 0:fbf7e19e0e61 | 166 | xAcc = abs(acc.getAccX()); |
CKMonroe | 0:fbf7e19e0e61 | 167 | yAcc = abs(acc.getAccY()); |
CKMonroe | 0:fbf7e19e0e61 | 168 | zAcc = abs(acc.getAccZ()); |
CKMonroe | 0:fbf7e19e0e61 | 169 | // Calulate vector sum of x,y and z reading. |
CKMonroe | 0:fbf7e19e0e61 | 170 | // vector = sqrt(pow(xAcc,2) + pow(zAcc,2)); |
CKMonroe | 0:fbf7e19e0e61 | 171 | vector = zAcc; |
CKMonroe | 0:fbf7e19e0e61 | 172 | if (vector > vMax) { |
CKMonroe | 0:fbf7e19e0e61 | 173 | vMax = vector; |
CKMonroe | 0:fbf7e19e0e61 | 174 | } |
CKMonroe | 0:fbf7e19e0e61 | 175 | dataTimer.reset(); |
CKMonroe | 0:fbf7e19e0e61 | 176 | } |
CKMonroe | 0:fbf7e19e0e61 | 177 | |
CKMonroe | 0:fbf7e19e0e61 | 178 | // Display the appropriate data on the LCD based upon what mode was chosen |
CKMonroe | 0:fbf7e19e0e61 | 179 | while (displayTimer.read() > DisplayTime){ |
CKMonroe | 0:fbf7e19e0e61 | 180 | switch (displayState) { |
CKMonroe | 0:fbf7e19e0e61 | 181 | case XCOMPD: { |
CKMonroe | 0:fbf7e19e0e61 | 182 | sprintf (lcdData,"%4.3f",xAcc); |
CKMonroe | 0:fbf7e19e0e61 | 183 | break; |
CKMonroe | 0:fbf7e19e0e61 | 184 | } |
CKMonroe | 0:fbf7e19e0e61 | 185 | case YCOMPD: { |
CKMonroe | 0:fbf7e19e0e61 | 186 | sprintf (lcdData,"%4.3f",yAcc); |
CKMonroe | 0:fbf7e19e0e61 | 187 | break; |
CKMonroe | 0:fbf7e19e0e61 | 188 | } |
CKMonroe | 0:fbf7e19e0e61 | 189 | case ZCOMPD: { |
CKMonroe | 0:fbf7e19e0e61 | 190 | sprintf (lcdData,"%4.3f",zAcc); |
CKMonroe | 0:fbf7e19e0e61 | 191 | break; |
CKMonroe | 0:fbf7e19e0e61 | 192 | } |
CKMonroe | 0:fbf7e19e0e61 | 193 | case VMAXD:{ |
CKMonroe | 0:fbf7e19e0e61 | 194 | sprintf (lcdData,"%4.3f",vMax); |
CKMonroe | 0:fbf7e19e0e61 | 195 | break; |
CKMonroe | 0:fbf7e19e0e61 | 196 | } |
CKMonroe | 0:fbf7e19e0e61 | 197 | } |
CKMonroe | 0:fbf7e19e0e61 | 198 | LCDMessNoDwell(lcdData); |
CKMonroe | 0:fbf7e19e0e61 | 199 | displayTimer.reset(); |
CKMonroe | 0:fbf7e19e0e61 | 200 | } // displaytimer |
CKMonroe | 0:fbf7e19e0e61 | 201 | // Wait then do the whole thing again. |
CKMonroe | 0:fbf7e19e0e61 | 202 | // Alive LEDs |
CKMonroe | 0:fbf7e19e0e61 | 203 | while(blinkTimer.read()> LEDDELAY) { |
CKMonroe | 0:fbf7e19e0e61 | 204 | LEDs[0].write(outState); |
CKMonroe | 0:fbf7e19e0e61 | 205 | LEDs[1].write(!outState); |
CKMonroe | 0:fbf7e19e0e61 | 206 | outState = !outState; |
CKMonroe | 0:fbf7e19e0e61 | 207 | blinkTimer.reset(); |
CKMonroe | 0:fbf7e19e0e61 | 208 | } |
CKMonroe | 0:fbf7e19e0e61 | 209 | }//forever loop |
CKMonroe | 0:fbf7e19e0e61 | 210 | }// main |