Used for testing battery sense circuit, looking for max and min levels. Allow for finding true empty, half and full values for driving LEDs for example
Dependencies: mbed MPL3115A2 TSI WiGo_BattCharger
main.cpp@5:4438d5665b4f, 2013-09-03 (annotated)
- Committer:
- monpjc
- Date:
- Tue Sep 03 08:59:49 2013 +0000
- Revision:
- 5:4438d5665b4f
- Parent:
- 3:3b88d6ae24f2
WIP
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
monpjc | 0:17ad5a30ff25 | 1 | #include "mbed.h" |
monpjc | 1:b1921e153d21 | 2 | #include "WiGo_BattCharger.h" |
monpjc | 3:3b88d6ae24f2 | 3 | #include "TSISensor.h" |
monpjc | 3:3b88d6ae24f2 | 4 | #include "math.h" |
monpjc | 3:3b88d6ae24f2 | 5 | #include "MPL3115A2.h" |
monpjc | 5:4438d5665b4f | 6 | #include "main.h" |
monpjc | 3:3b88d6ae24f2 | 7 | |
monpjc | 5:4438d5665b4f | 8 | MPL3115A2 wigo_sensor1(PTE0, PTE1, MPL3115A2_I2C_ADDRESS); |
monpjc | 0:17ad5a30ff25 | 9 | |
monpjc | 3:3b88d6ae24f2 | 10 | // Some LEDs for showing status |
monpjc | 3:3b88d6ae24f2 | 11 | DigitalOut redLed(LED_RED); |
monpjc | 3:3b88d6ae24f2 | 12 | DigitalOut greenLed(LED_GREEN); |
monpjc | 3:3b88d6ae24f2 | 13 | DigitalOut blueLed(LED_BLUE); |
monpjc | 3:3b88d6ae24f2 | 14 | |
monpjc | 5:4438d5665b4f | 15 | // test analog input pin |
monpjc | 5:4438d5665b4f | 16 | AnalogIn NTC(PTE20); |
monpjc | 5:4438d5665b4f | 17 | AnalogIn testPin1(PTE30); |
monpjc | 5:4438d5665b4f | 18 | AnalogIn testPin2(PTE22); |
monpjc | 5:4438d5665b4f | 19 | AnalogIn testPin3(PTC0); |
monpjc | 5:4438d5665b4f | 20 | AnalogIn testPin4(PTE29); |
monpjc | 5:4438d5665b4f | 21 | AnalogIn testPin5(PTD1); |
monpjc | 5:4438d5665b4f | 22 | |
monpjc | 3:3b88d6ae24f2 | 23 | // Slide sensor acts as a button |
monpjc | 3:3b88d6ae24f2 | 24 | TSISensor tsi; |
monpjc | 3:3b88d6ae24f2 | 25 | |
monpjc | 3:3b88d6ae24f2 | 26 | // I2C used to communicate with sensor |
monpjc | 3:3b88d6ae24f2 | 27 | I2C i2c(PTE0, PTE1); |
monpjc | 3:3b88d6ae24f2 | 28 | |
monpjc | 3:3b88d6ae24f2 | 29 | int avgX, avgY, newX, tempXmin, tempXmax, newY, tempYmin, tempYmax; |
monpjc | 3:3b88d6ae24f2 | 30 | // Ideally these would be saved in eeprom/flash |
monpjc | 3:3b88d6ae24f2 | 31 | struct settings_t { |
monpjc | 3:3b88d6ae24f2 | 32 | long maxX, minX, maxY, minY; |
monpjc | 3:3b88d6ae24f2 | 33 | } |
monpjc | 3:3b88d6ae24f2 | 34 | settings; |
monpjc | 3:3b88d6ae24f2 | 35 | |
monpjc | 3:3b88d6ae24f2 | 36 | const int addr = MAG_ADDR; |
monpjc | 0:17ad5a30ff25 | 37 | |
monpjc | 0:17ad5a30ff25 | 38 | Serial pc(USBTX, USBRX); |
monpjc | 0:17ad5a30ff25 | 39 | |
monpjc | 1:b1921e153d21 | 40 | WiGo_BattCharger Batt( BATT_LOW, BATT_MED, BATT_FULL, CHRG_EN1, CHRG_EN2, CHRG_SNS_EN, CHRG_SNS, CHRG_POK, CHRG_CHG); |
monpjc | 0:17ad5a30ff25 | 41 | |
monpjc | 3:3b88d6ae24f2 | 42 | // Read a single byte form 8 bit register, return as int |
monpjc | 3:3b88d6ae24f2 | 43 | int readReg(char regAddr) |
monpjc | 3:3b88d6ae24f2 | 44 | { |
monpjc | 3:3b88d6ae24f2 | 45 | char cmd[1]; |
monpjc | 3:3b88d6ae24f2 | 46 | |
monpjc | 3:3b88d6ae24f2 | 47 | cmd[0] = regAddr; |
monpjc | 3:3b88d6ae24f2 | 48 | i2c.write(addr, cmd, 1); |
monpjc | 3:3b88d6ae24f2 | 49 | |
monpjc | 3:3b88d6ae24f2 | 50 | cmd[0] = 0x00; |
monpjc | 3:3b88d6ae24f2 | 51 | i2c.read(addr, cmd, 1); |
monpjc | 3:3b88d6ae24f2 | 52 | return (int)( cmd[0]); |
monpjc | 3:3b88d6ae24f2 | 53 | } |
monpjc | 3:3b88d6ae24f2 | 54 | |
monpjc | 3:3b88d6ae24f2 | 55 | // read a register per, pass first reg value, reading 2 bytes increments register |
monpjc | 3:3b88d6ae24f2 | 56 | // Reads MSB first then LSB |
monpjc | 3:3b88d6ae24f2 | 57 | int readVal(char regAddr) |
monpjc | 3:3b88d6ae24f2 | 58 | { |
monpjc | 3:3b88d6ae24f2 | 59 | char cmd[2]; |
monpjc | 3:3b88d6ae24f2 | 60 | |
monpjc | 3:3b88d6ae24f2 | 61 | cmd[0] = regAddr; |
monpjc | 3:3b88d6ae24f2 | 62 | i2c.write(addr, cmd, 1); |
monpjc | 3:3b88d6ae24f2 | 63 | |
monpjc | 3:3b88d6ae24f2 | 64 | cmd[0] = 0x00; |
monpjc | 3:3b88d6ae24f2 | 65 | cmd[1] = 0x00; |
monpjc | 3:3b88d6ae24f2 | 66 | i2c.read(addr, cmd, 2); |
monpjc | 3:3b88d6ae24f2 | 67 | return (int)( (cmd[1]|(cmd[0] << 8))); //concatenate the MSB and LSB |
monpjc | 3:3b88d6ae24f2 | 68 | } |
monpjc | 3:3b88d6ae24f2 | 69 | |
monpjc | 3:3b88d6ae24f2 | 70 | void initMag() { |
monpjc | 3:3b88d6ae24f2 | 71 | char cmd[2]; |
monpjc | 3:3b88d6ae24f2 | 72 | |
monpjc | 3:3b88d6ae24f2 | 73 | cmd[0] = MAG_CTRL_REG2; |
monpjc | 3:3b88d6ae24f2 | 74 | cmd[1] = 0x80; |
monpjc | 3:3b88d6ae24f2 | 75 | i2c.write(addr, cmd, 2); |
monpjc | 3:3b88d6ae24f2 | 76 | |
monpjc | 3:3b88d6ae24f2 | 77 | cmd[0] = MAG_CTRL_REG1; |
monpjc | 3:3b88d6ae24f2 | 78 | cmd[1] = MAG_3110_SAMPLE80+MAG_3110_OVERSAMPLE2+MAG_3110_ACTIVE; // 0x91; |
monpjc | 3:3b88d6ae24f2 | 79 | i2c.write(addr, cmd, 2); |
monpjc | 3:3b88d6ae24f2 | 80 | } |
monpjc | 3:3b88d6ae24f2 | 81 | |
monpjc | 3:3b88d6ae24f2 | 82 | void calXY() //magnetometer calibration: finding max and min of X, Y axis |
monpjc | 3:3b88d6ae24f2 | 83 | { |
monpjc | 3:3b88d6ae24f2 | 84 | int tempXmax, tempXmin, tempYmax, tempYmin, newX, newY; |
monpjc | 3:3b88d6ae24f2 | 85 | redLed = ON; |
monpjc | 3:3b88d6ae24f2 | 86 | |
monpjc | 3:3b88d6ae24f2 | 87 | printf("Waiting for initial press\n"); |
monpjc | 3:3b88d6ae24f2 | 88 | // Wait for slider to be pressed |
monpjc | 3:3b88d6ae24f2 | 89 | while( tsi.readDistance() == 0 ) { |
monpjc | 3:3b88d6ae24f2 | 90 | redLed = ON; |
monpjc | 3:3b88d6ae24f2 | 91 | wait(0.2); |
monpjc | 3:3b88d6ae24f2 | 92 | redLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 93 | wait(0.2); |
monpjc | 3:3b88d6ae24f2 | 94 | } |
monpjc | 3:3b88d6ae24f2 | 95 | |
monpjc | 3:3b88d6ae24f2 | 96 | printf("Waiting for release\n"); |
monpjc | 3:3b88d6ae24f2 | 97 | |
monpjc | 3:3b88d6ae24f2 | 98 | // Wait for release |
monpjc | 3:3b88d6ae24f2 | 99 | while( tsi.readDistance() != 0 ) { |
monpjc | 3:3b88d6ae24f2 | 100 | redLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 101 | wait(0.2); |
monpjc | 3:3b88d6ae24f2 | 102 | redLed = ON; |
monpjc | 3:3b88d6ae24f2 | 103 | wait(0.2); |
monpjc | 3:3b88d6ae24f2 | 104 | } |
monpjc | 3:3b88d6ae24f2 | 105 | redLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 106 | wait(0.5); |
monpjc | 3:3b88d6ae24f2 | 107 | |
monpjc | 3:3b88d6ae24f2 | 108 | printf("Rotate\n"); |
monpjc | 3:3b88d6ae24f2 | 109 | |
monpjc | 3:3b88d6ae24f2 | 110 | tempXmax = tempXmin = readVal(MAG_OUT_X_MSB); |
monpjc | 3:3b88d6ae24f2 | 111 | tempYmax = tempYmin = readVal(MAG_OUT_Y_MSB); |
monpjc | 3:3b88d6ae24f2 | 112 | |
monpjc | 3:3b88d6ae24f2 | 113 | while(tsi.readDistance() == 0) { |
monpjc | 3:3b88d6ae24f2 | 114 | greenLed = ON; |
monpjc | 3:3b88d6ae24f2 | 115 | wait(0.1); |
monpjc | 3:3b88d6ae24f2 | 116 | greenLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 117 | wait(0.1); |
monpjc | 3:3b88d6ae24f2 | 118 | newX = readVal(MAG_OUT_X_MSB); |
monpjc | 3:3b88d6ae24f2 | 119 | newY = readVal(MAG_OUT_Y_MSB); |
monpjc | 3:3b88d6ae24f2 | 120 | if (newX > tempXmax) tempXmax = newX; |
monpjc | 3:3b88d6ae24f2 | 121 | if (newX < tempXmin) tempXmin = newX; |
monpjc | 3:3b88d6ae24f2 | 122 | if (newY > tempYmax) tempYmax = newY; |
monpjc | 3:3b88d6ae24f2 | 123 | if (newY < tempYmin) tempYmin = newY; |
monpjc | 3:3b88d6ae24f2 | 124 | } |
monpjc | 3:3b88d6ae24f2 | 125 | |
monpjc | 3:3b88d6ae24f2 | 126 | settings.maxX = tempXmax; |
monpjc | 3:3b88d6ae24f2 | 127 | settings.minX = tempXmin; |
monpjc | 3:3b88d6ae24f2 | 128 | settings.maxY = tempYmax; |
monpjc | 3:3b88d6ae24f2 | 129 | settings.minY = tempYmin; |
monpjc | 3:3b88d6ae24f2 | 130 | |
monpjc | 3:3b88d6ae24f2 | 131 | //store new X, Y values in EEPROM/Flash |
monpjc | 3:3b88d6ae24f2 | 132 | |
monpjc | 3:3b88d6ae24f2 | 133 | // Calculate average from min/max |
monpjc | 3:3b88d6ae24f2 | 134 | avgX=(settings.maxX+settings.minX)/2; |
monpjc | 3:3b88d6ae24f2 | 135 | avgY=(settings.maxY+settings.minY)/2; |
monpjc | 3:3b88d6ae24f2 | 136 | |
monpjc | 3:3b88d6ae24f2 | 137 | // Wait for release |
monpjc | 3:3b88d6ae24f2 | 138 | while( tsi.readDistance() != 0 ) { |
monpjc | 3:3b88d6ae24f2 | 139 | greenLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 140 | wait(0.2); |
monpjc | 3:3b88d6ae24f2 | 141 | greenLed = ON; |
monpjc | 3:3b88d6ae24f2 | 142 | wait(0.2); |
monpjc | 3:3b88d6ae24f2 | 143 | } |
monpjc | 3:3b88d6ae24f2 | 144 | greenLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 145 | wait(1.0); |
monpjc | 5:4438d5665b4f | 146 | } |
monpjc | 3:3b88d6ae24f2 | 147 | |
monpjc | 5:4438d5665b4f | 148 | // ================================ MAIN CODE ================================ |
monpjc | 3:3b88d6ae24f2 | 149 | |
monpjc | 0:17ad5a30ff25 | 150 | float max_batt; |
monpjc | 0:17ad5a30ff25 | 151 | float batt_lvl; |
monpjc | 5:4438d5665b4f | 152 | float sensor_data[2]; |
monpjc | 5:4438d5665b4f | 153 | float testVoltage; |
monpjc | 0:17ad5a30ff25 | 154 | |
monpjc | 0:17ad5a30ff25 | 155 | int main() |
monpjc | 0:17ad5a30ff25 | 156 | { |
monpjc | 5:4438d5665b4f | 157 | //unsigned int mode=1; |
monpjc | 5:4438d5665b4f | 158 | |
monpjc | 5:4438d5665b4f | 159 | testVoltage = testPin.read(); |
monpjc | 3:3b88d6ae24f2 | 160 | |
monpjc | 2:c08efa9effc8 | 161 | Batt.init(CHRG_500MA); |
monpjc | 1:b1921e153d21 | 162 | Batt.sense_en(1); |
monpjc | 0:17ad5a30ff25 | 163 | wait(0.5); |
monpjc | 1:b1921e153d21 | 164 | max_batt = Batt.read(); |
monpjc | 3:3b88d6ae24f2 | 165 | wigo_sensor1.Oversample_Ratio( OVERSAMPLE_RATIO_32); |
monpjc | 5:4438d5665b4f | 166 | wigo_sensor1.Barometric_Mode(); |
monpjc | 1:b1921e153d21 | 167 | |
monpjc | 3:3b88d6ae24f2 | 168 | printf("MAG3110 Test\n"); |
monpjc | 3:3b88d6ae24f2 | 169 | |
monpjc | 3:3b88d6ae24f2 | 170 | redLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 171 | greenLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 172 | blueLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 173 | |
monpjc | 3:3b88d6ae24f2 | 174 | initMag(); |
monpjc | 3:3b88d6ae24f2 | 175 | |
monpjc | 3:3b88d6ae24f2 | 176 | // Get some values |
monpjc | 3:3b88d6ae24f2 | 177 | printf("DR_STATUS %X\n", readReg( MAG_DR_STATUS )); |
monpjc | 3:3b88d6ae24f2 | 178 | printf("WHO_AM_I %X\n", readReg( MAG_WHO_AM_I )); |
monpjc | 3:3b88d6ae24f2 | 179 | printf("SYSMOD %X\n", readReg( MAG_SYSMOD )); |
monpjc | 3:3b88d6ae24f2 | 180 | printf("DIE_TEMP %d\n", readReg( MAG_DIE_TEMP )); |
monpjc | 3:3b88d6ae24f2 | 181 | |
monpjc | 3:3b88d6ae24f2 | 182 | printf("OFF_X %d\n", readVal( MAG_OFF_X_MSB )); |
monpjc | 3:3b88d6ae24f2 | 183 | printf("OFF_Y %d\n", readVal( MAG_OFF_Y_MSB )); |
monpjc | 3:3b88d6ae24f2 | 184 | printf("OFF_Z %d\n", readVal( MAG_OFF_Z_MSB )); |
monpjc | 3:3b88d6ae24f2 | 185 | |
monpjc | 3:3b88d6ae24f2 | 186 | printf("CTRL_REG1 %X\n", readReg( MAG_CTRL_REG1 )); |
monpjc | 3:3b88d6ae24f2 | 187 | printf("CTRL_REG2 %X\n", readReg( MAG_CTRL_REG2 )); |
monpjc | 3:3b88d6ae24f2 | 188 | |
monpjc | 5:4438d5665b4f | 189 | // Mag calibration or store defaults |
monpjc | 5:4438d5665b4f | 190 | //=================================== |
monpjc | 5:4438d5665b4f | 191 | //printf("calibrate\n"); |
monpjc | 5:4438d5665b4f | 192 | //calXY(); |
monpjc | 5:4438d5665b4f | 193 | //printf("....Finished\n"); |
monpjc | 5:4438d5665b4f | 194 | //printf("avgX = %d, avgY = %d\n", avgX, avgY); |
monpjc | 5:4438d5665b4f | 195 | avgX = 64366; |
monpjc | 5:4438d5665b4f | 196 | avgY = 1624; |
monpjc | 3:3b88d6ae24f2 | 197 | |
monpjc | 3:3b88d6ae24f2 | 198 | redLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 199 | greenLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 200 | blueLed = OFF; |
monpjc | 0:17ad5a30ff25 | 201 | |
monpjc | 0:17ad5a30ff25 | 202 | while(1) { |
monpjc | 0:17ad5a30ff25 | 203 | |
monpjc | 3:3b88d6ae24f2 | 204 | wait(2); |
monpjc | 3:3b88d6ae24f2 | 205 | int xVal = readVal(MAG_OUT_X_MSB); |
monpjc | 3:3b88d6ae24f2 | 206 | int yVal = readVal(MAG_OUT_Y_MSB); |
monpjc | 5:4438d5665b4f | 207 | int zVal = readVal(MAG_OUT_Z_MSB); |
monpjc | 3:3b88d6ae24f2 | 208 | float heading = (atan2((double)(yVal-avgY),(double)(xVal-avgX)))*180/PI; |
monpjc | 3:3b88d6ae24f2 | 209 | |
monpjc | 3:3b88d6ae24f2 | 210 | // Do something with heading - display direction and turn on blue LED if heading approx north |
monpjc | 3:3b88d6ae24f2 | 211 | if (abs(heading) <= 22.5) { printf("N\n"); blueLed = ON; } else blueLed = OFF; |
monpjc | 3:3b88d6ae24f2 | 212 | if (abs(heading) >= 157.5) printf("S\n"); |
monpjc | 3:3b88d6ae24f2 | 213 | if (heading >= 67.5 && heading <= 112.5) printf("E \n"); |
monpjc | 3:3b88d6ae24f2 | 214 | if (heading <= -67.5 && heading >= -112.5) printf("W \n"); |
monpjc | 3:3b88d6ae24f2 | 215 | if (heading > 22.5 && heading < 67.5) printf("NE\n"); |
monpjc | 3:3b88d6ae24f2 | 216 | if (heading < -22.5 && heading > -67.5) printf("NW\n"); |
monpjc | 3:3b88d6ae24f2 | 217 | if (heading > 112.5 && heading < 157.5) printf("SE\n"); |
monpjc | 3:3b88d6ae24f2 | 218 | if (heading < -112.5 && heading > -157.5) printf("SW\n"); |
monpjc | 0:17ad5a30ff25 | 219 | |
monpjc | 3:3b88d6ae24f2 | 220 | if (heading < 0) heading += 360.0; |
monpjc | 5:4438d5665b4f | 221 | //printf("xVal - avgX = %d, yVal - avgY = %d ", xVal-avgX, yVal-avgY); |
monpjc | 5:4438d5665b4f | 222 | //printf("X = %d, Y = %d, Z = %d, Heading %f\n", xVal, yVal, zVal, heading); |
monpjc | 5:4438d5665b4f | 223 | printf("Heading %f\n", heading); |
monpjc | 0:17ad5a30ff25 | 224 | |
monpjc | 2:c08efa9effc8 | 225 | Batt.LEDupdate(1); |
monpjc | 0:17ad5a30ff25 | 226 | |
monpjc | 1:b1921e153d21 | 227 | batt_lvl = Batt.read(); |
monpjc | 0:17ad5a30ff25 | 228 | if( batt_lvl > max_batt ) { |
monpjc | 0:17ad5a30ff25 | 229 | max_batt = batt_lvl; |
monpjc | 0:17ad5a30ff25 | 230 | } |
monpjc | 0:17ad5a30ff25 | 231 | |
monpjc | 5:4438d5665b4f | 232 | pc.printf("Batt = %f Max:%f %i%\n", batt_lvl, max_batt, Batt.level()); |
monpjc | 3:3b88d6ae24f2 | 233 | |
monpjc | 3:3b88d6ae24f2 | 234 | if ( wigo_sensor1.isDataAvailable()) { |
monpjc | 3:3b88d6ae24f2 | 235 | wigo_sensor1.getAllData( &sensor_data[0]); |
monpjc | 5:4438d5665b4f | 236 | pc.printf("Bar: %f\tTemperature: %f\n", sensor_data[0]/100, sensor_data[1]); |
monpjc | 3:3b88d6ae24f2 | 237 | } |
monpjc | 5:4438d5665b4f | 238 | |
monpjc | 5:4438d5665b4f | 239 | //if ( mode & 0x0001) { |
monpjc | 5:4438d5665b4f | 240 | // pc.printf("\tPressure: %f\tTemperature: %f\r\n", sensor_data[0], sensor_data[1]); |
monpjc | 5:4438d5665b4f | 241 | // wigo_sensor1.Altimeter_Mode(); |
monpjc | 5:4438d5665b4f | 242 | //} else { |
monpjc | 5:4438d5665b4f | 243 | // pc.printf("\Altitude: %f\tTemperature: %f\r\n", sensor_data[0], sensor_data[1]); |
monpjc | 5:4438d5665b4f | 244 | // wigo_sensor1.Barometric_Mode(); |
monpjc | 5:4438d5665b4f | 245 | //} |
monpjc | 5:4438d5665b4f | 246 | //mode++; |
monpjc | 5:4438d5665b4f | 247 | |
monpjc | 5:4438d5665b4f | 248 | //testVoltage = testPin.read(); |
monpjc | 5:4438d5665b4f | 249 | //pc.printf("testVoltage = %f\n", testVoltage ); |
monpjc | 5:4438d5665b4f | 250 | //testVoltage = testPin1.read(); |
monpjc | 5:4438d5665b4f | 251 | //pc.printf("testVoltage1 = %f\n", testVoltage ); |
monpjc | 5:4438d5665b4f | 252 | //testVoltage = testPin2.read(); |
monpjc | 5:4438d5665b4f | 253 | //pc.printf("testVoltage2 = %f\n", testVoltage ); |
monpjc | 5:4438d5665b4f | 254 | //testVoltage = testPin3.read(); |
monpjc | 5:4438d5665b4f | 255 | //pc.printf("testVoltage3 = %f\n", testVoltage ); |
monpjc | 5:4438d5665b4f | 256 | //testVoltage = testPin4.read(); |
monpjc | 5:4438d5665b4f | 257 | //pc.printf("testVoltage4 = %f\n", testVoltage ); |
monpjc | 5:4438d5665b4f | 258 | pc.printf("------------------------------------------------\n"); |
monpjc | 5:4438d5665b4f | 259 | |
monpjc | 0:17ad5a30ff25 | 260 | } |
monpjc | 0:17ad5a30ff25 | 261 | } |