The Technology Partnership / Mbed 2 deprecated MEMSPCR_Control_Program_AD_Logging_PWM_Calibration

Used for calibration consumables

Dependencies:   mbed MODSERIAL FastPWM ADS8568_ADC

main.cpp@31:35c86bee2ed9, 2020-03-25 (annotated)

Committer:
paullj
Date:
Wed Mar 25 09:16:44 2020 +0000
Revision:
31:35c86bee2ed9
Parent:
30:ab214b681d9b 
Added old values back as a comment

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AlexStokoe 0:362148ad8f6f 1 #include "mbed.h"
justinbuckland 16:2c563709cf09 2 #include "ADS8568_ADC.h"
justinbuckland 16:2c563709cf09 3 #include "FastPWM.h"
justinbuckland 16:2c563709cf09 4 #include "MODSERIAL.h"
AlexStokoe 0:362148ad8f6f 5
paullj 25:bd29d673e5d3 6 #define MEAS_DELAY 60 // measurement delay after turning on FET (us)
paullj 28:ef9e567bed5b 7 #define LOG_INTERVAL 200 // log file interval (ms)
paullj 28:ef9e567bed5b 8 #define START_DELAY 100 // pause for startup (ms)
justinbuckland 22:aba3ee6df08e 9 #define N_STEPS 100
justinbuckland 16:2c563709cf09 10 #define BUFFER_SIZE 4096
AlexStokoe 0:362148ad8f6f 11
justinbuckland 17:25831977b98e 12 //UID lookup address and pointer
justinbuckland 17:25831977b98e 13 #define UID_ADDR 0x1FFF7A10
justinbuckland 17:25831977b98e 14 unsigned long *uid = (unsigned long *) UID_ADDR;
justinbuckland 17:25831977b98e 15
justinbuckland 17:25831977b98e 16 //UID and drive board calibration table
justinbuckland 17:25831977b98e 17 #define UID_TABLE_LENGTH 4
justinbuckland 17:25831977b98e 18
justinbuckland 17:25831977b98e 19 int drive_board_serial_number[UID_TABLE_LENGTH] =
justinbuckland 17:25831977b98e 20 {1,
justinbuckland 17:25831977b98e 21 2,
justinbuckland 17:25831977b98e 22 3,
justinbuckland 17:25831977b98e 23 4};
justinbuckland 17:25831977b98e 24
justinbuckland 17:25831977b98e 25 unsigned long drive_board_uid[UID_TABLE_LENGTH][3] =
justinbuckland 17:25831977b98e 26 {{0x005B0060, 0x32375101, 0x32363531},
paullj 29:f2585571ce25 27 {0x00530028, 0x32375116, 0x30333732},
paullj 21:4833e7fbcec7 28 {0x00520060, 0x32375101, 0x32363531},
paullj 21:4833e7fbcec7 29 {0x00570060, 0x32375101, 0x32363531}};
justinbuckland 17:25831977b98e 30
justinbuckland 20:ab2d7aa17a20 31 float drive_board_cal[UID_TABLE_LENGTH][2][2] =
paullj 29:f2585571ce25 32 {{{0.098846, 10.190057}, {0.060713, 10.208784}},
paullj 29:f2585571ce25 33 {{0.060987, 10.154840}, {0.033058, 10.239591}},
paullj 29:f2585571ce25 34 {{0.014312, 10.405662}, {0.000000, 1.0000000}},
paullj 29:f2585571ce25 35 {{0.055152, 10.062970}, {0.114355, 10.123188}}};
paullj 31:35c86bee2ed9 36
paullj 31:35c86bee2ed9 37 // Old Calibration values
paullj 31:35c86bee2ed9 38 // {{{0.0908347476278717, 10.1921343711427}, {0.0497613470164513, 10.2109327517567}},
paullj 31:35c86bee2ed9 39 // {{0.0596907336847412, 10.1550084867437}, {0.0320376283698263, 10.2580153464834}},
paullj 31:35c86bee2ed9 40 // {{0.0119648730956925, 10.4065902688349}, {0.0256785142683800, 10.2921134395920}},
paullj 31:35c86bee2ed9 41 // {{0.0482969653247984, 10.0688110602909}, {0.0882102280729402, 10.1322703041679}}};
justinbuckland 17:25831977b98e 42
justinbuckland 16:2c563709cf09 43 MODSERIAL pc(PA_9, PA_10, BUFFER_SIZE); //mcu TX, RX, BUFFER_SIZE byte TX and RX buffers
justinbuckland 16:2c563709cf09 44 ADS8568_ADC adc(PB_15, PB_14, PB_13, PB_12, PC_15, PC_0, PC_1, PC_2, PC_3);
justinbuckland 16:2c563709cf09 45 I2C i2c(PB_7, PB_8); //SDA, SCL
sophiemeredith 11:8e6c8e654004 46 Timer timer;
justinbuckland 16:2c563709cf09 47 DigitalIn adc_busy(PA_8); //Busy interrupt sig#
sophiemeredith 11:8e6c8e654004 48
justinbuckland 16:2c563709cf09 49 //Heater Control
justinbuckland 16:2c563709cf09 50 FastPWM drive_1(PC_9);
justinbuckland 16:2c563709cf09 51 FastPWM drive_2(PC_8);
justinbuckland 16:2c563709cf09 52 FastPWM guard_1(PC_7);
justinbuckland 16:2c563709cf09 53 FastPWM guard_2(PC_6);
AlexStokoe 0:362148ad8f6f 54
justinbuckland 16:2c563709cf09 55 //Indicator LEDs
justinbuckland 16:2c563709cf09 56 DigitalOut hb_led(PC_13); //Green
justinbuckland 16:2c563709cf09 57 DigitalOut led_0(PC_4); //Red
justinbuckland 16:2c563709cf09 58 DigitalOut led_1(PC_5); //Green
justinbuckland 16:2c563709cf09 59
justinbuckland 16:2c563709cf09 60 //User buttons
justinbuckland 16:2c563709cf09 61 DigitalIn user_0(PB_0);
justinbuckland 16:2c563709cf09 62 DigitalIn user_1(PB_1);
justinbuckland 16:2c563709cf09 63
justinbuckland 16:2c563709cf09 64 BusOut converts(PC_0, PC_1, PC_2, PC_3);
AlexStokoe 0:362148ad8f6f 65
AlexStokoe 0:362148ad8f6f 66 int main() {
sophiemeredith 11:8e6c8e654004 67 int eTime;
justinbuckland 16:2c563709cf09 68 int v[2], curr[2];
justinbuckland 17:25831977b98e 69 double r_adc[2], r_ohm[2];
justinbuckland 16:2c563709cf09 70
justinbuckland 16:2c563709cf09 71 int i_port[2] = {0,2};
justinbuckland 16:2c563709cf09 72 int v_port[2] = {1,3};
justinbuckland 2:23f848b21b09 73
justinbuckland 16:2c563709cf09 74 pc.baud(115200);
justinbuckland 16:2c563709cf09 75 adc.init();
AlexStokoe 0:362148ad8f6f 76
justinbuckland 16:2c563709cf09 77 // Initialsation - all heaters off
justinbuckland 16:2c563709cf09 78 drive_1.prescaler(1);
justinbuckland 16:2c563709cf09 79 drive_1.period_ticks(1000);
justinbuckland 16:2c563709cf09 80 drive_1.pulsewidth_ticks(0);
justinbuckland 16:2c563709cf09 81
justinbuckland 16:2c563709cf09 82 guard_1.prescaler(1);
justinbuckland 16:2c563709cf09 83 guard_1.period_ticks(1000);
justinbuckland 16:2c563709cf09 84 guard_1.pulsewidth_ticks(0);
justinbuckland 16:2c563709cf09 85
justinbuckland 16:2c563709cf09 86 drive_2.prescaler(1);
justinbuckland 16:2c563709cf09 87 drive_2.period_ticks(1000);
justinbuckland 16:2c563709cf09 88 drive_2.pulsewidth_ticks(0);
justinbuckland 16:2c563709cf09 89
justinbuckland 16:2c563709cf09 90 guard_2.prescaler(1);
justinbuckland 16:2c563709cf09 91 guard_2.period_ticks(1000);
justinbuckland 16:2c563709cf09 92 guard_2.pulsewidth_ticks(0);
justinbuckland 16:2c563709cf09 93
justinbuckland 17:25831977b98e 94 pc.printf("\r\nUnique ID: %08X %08X %08X \r\n", uid[0], uid[1], uid[2]);
paullj 21:4833e7fbcec7 95 int i_board = -1;
justinbuckland 17:25831977b98e 96 for (int i = 0; i < UID_TABLE_LENGTH; i++)
justinbuckland 17:25831977b98e 97 {
justinbuckland 17:25831977b98e 98 if (uid[0]==drive_board_uid[i][0] && uid[1]==drive_board_uid[i][1] && uid[2]==drive_board_uid[i][2])
justinbuckland 17:25831977b98e 99 {
justinbuckland 20:ab2d7aa17a20 100 i_board = i;
justinbuckland 17:25831977b98e 101 i = UID_TABLE_LENGTH;
justinbuckland 17:25831977b98e 102 }
justinbuckland 17:25831977b98e 103 }
justinbuckland 17:25831977b98e 104
paullj 28:ef9e567bed5b 105 if (i_board != -1) pc.printf("Drive board: %d ADC measurement: PWM heater pulse. 60us delay\n",drive_board_serial_number[i_board]);
justinbuckland 17:25831977b98e 106 else pc.printf("Drive board UID match not found\n");
justinbuckland 17:25831977b98e 107
paullj 28:ef9e567bed5b 108 pc.printf("eTime, I1, V1, R1_adc, R1_ohm, I2, V2, R2_adc, R2_ohm\n");
AlexStokoe 0:362148ad8f6f 109
justinbuckland 16:2c563709cf09 110 wait_ms(START_DELAY);
justinbuckland 16:2c563709cf09 111 timer.start();
AlexStokoe 0:362148ad8f6f 112
justinbuckland 27:5dcd526d7598 113 // indicate start
justinbuckland 27:5dcd526d7598 114 led_0 = 0;
justinbuckland 27:5dcd526d7598 115 led_1 = 1;
justinbuckland 27:5dcd526d7598 116
paullj 28:ef9e567bed5b 117 while(!user_1) {
paullj 28:ef9e567bed5b 118 while (pc.getcNb()!='p' && !user_0);
justinbuckland 16:2c563709cf09 119 eTime = timer.read_ms();
paullj 25:bd29d673e5d3 120
justinbuckland 16:2c563709cf09 121 for (int iHeater=0; iHeater <2; iHeater++) {
justinbuckland 16:2c563709cf09 122 // measure heater
justinbuckland 27:5dcd526d7598 123 if (iHeater==0)
justinbuckland 16:2c563709cf09 124 drive_1.pulsewidth_ticks(1000);
justinbuckland 16:2c563709cf09 125 else
justinbuckland 16:2c563709cf09 126 drive_2.pulsewidth_ticks(1000);
justinbuckland 16:2c563709cf09 127 wait_us(MEAS_DELAY);
justinbuckland 4:694f0e328a52 128
justinbuckland 16:2c563709cf09 129 //Start ADC conversion
justinbuckland 16:2c563709cf09 130 adc.start_conversion(15);
justinbuckland 16:2c563709cf09 131
justinbuckland 16:2c563709cf09 132 //Wait until ADC is free
justinbuckland 16:2c563709cf09 133 while(adc_busy == 1) {
justinbuckland 16:2c563709cf09 134 wait_us(1);
justinbuckland 16:2c563709cf09 135 }
justinbuckland 16:2c563709cf09 136
justinbuckland 16:2c563709cf09 137 //Turn off heater
justinbuckland 16:2c563709cf09 138 if (iHeater==0)
justinbuckland 16:2c563709cf09 139 drive_1.pulsewidth_ticks(0);
justinbuckland 16:2c563709cf09 140 else
justinbuckland 16:2c563709cf09 141 drive_2.pulsewidth_ticks(0);
justinbuckland 27:5dcd526d7598 142
justinbuckland 16:2c563709cf09 143 wait_us(MEAS_DELAY);
sophiemeredith 14:d764e256ac6d 144
justinbuckland 16:2c563709cf09 145 //Get ADC values
justinbuckland 16:2c563709cf09 146 adc.read_channels();
justinbuckland 16:2c563709cf09 147 curr[iHeater] = adc.read_channel_result(i_port[iHeater]);
justinbuckland 16:2c563709cf09 148 v[iHeater] = adc.read_channel_result(v_port[iHeater]);
justinbuckland 17:25831977b98e 149 r_adc[iHeater] = (float)v[iHeater]/(float)curr[iHeater];
paullj 21:4833e7fbcec7 150 if (i_board != -1)
justinbuckland 20:ab2d7aa17a20 151 r_ohm[iHeater] = drive_board_cal[i_board][iHeater][0] + r_adc[iHeater]*drive_board_cal[i_board][iHeater][1];
justinbuckland 17:25831977b98e 152 else
justinbuckland 17:25831977b98e 153 r_ohm[iHeater] = 0.0;
justinbuckland 17:25831977b98e 154
justinbuckland 24:899071abfc14 155 //Wait before drivinng other heater
justinbuckland 24:899071abfc14 156 wait_ms(LOG_INTERVAL/2);
paullj 28:ef9e567bed5b 157 wait_us(MEAS_DELAY);
justinbuckland 24:899071abfc14 158
justinbuckland 16:2c563709cf09 159 }
paullj 25:bd29d673e5d3 160 //Write output for iHeater
paullj 28:ef9e567bed5b 161 pc.printf("%10d, %10d, %10.6f, %10.6f, %10d, %10d, %10.6f, %10.6f \n", curr[0], v[0], r_adc[0], r_ohm[0], curr[1], v[1], r_adc[1], r_ohm[1]);
justinbuckland 24:899071abfc14 162
justinbuckland 16:2c563709cf09 163 }
justinbuckland 27:5dcd526d7598 164
justinbuckland 27:5dcd526d7598 165 // indicate stop
justinbuckland 27:5dcd526d7598 166 led_0 = 1;
justinbuckland 27:5dcd526d7598 167 led_1 = 0;
justinbuckland 24:899071abfc14 168
justinbuckland 5:67e4ee9a00dc 169 }