Dan Allen / Mbed 2 deprecated MAX11410_test

test program to power up two MAX11410 ADCs and check the inputs of ADC1. Uses MAX11410 library.

Dependencies:   MAX11410 mbed

main.cpp@6:c3db4eff9170, 2018-01-10 (annotated)

Committer:
laserdad
Date:
Wed Jan 10 02:17:31 2018 +0000
Revision:
6:c3db4eff9170
Parent:
5:d7b803aa9079 
added serial prints

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon 0:4f78cdfc99de 1 // I2CU - Search for devices on an I2C bus
simon 0:4f78cdfc99de 2 // Copyright (c) 2009, sford
simon 0:4f78cdfc99de 3 // Released under the MIT License: http://mbed.org/license/mit
simon 0:4f78cdfc99de 4 //
simon 0:4f78cdfc99de 5 // Goes through each device address, seeing if it gets a response
simon 0:4f78cdfc99de 6 // - for every device if finds, it prints the 8-bit address
simon 0:4f78cdfc99de 7 // - if the program hangs, the bus isn't working (check pull-ups etc)
simon 0:4f78cdfc99de 8 // - if it doesn't find your device, check power/bus wiring etc
smartsystemdesign 3:42120705a9bd 9 //
smartsystemdesign 3:42120705a9bd 10 // - Note: if you plug / unplug devices try cycling power
smartsystemdesign 2:39ba9beabf3c 11
simon 0:4f78cdfc99de 12 #include "mbed.h"
laserdad 5:d7b803aa9079 13 #include "MAX11410.h"
simon 0:4f78cdfc99de 14
laserdad 5:d7b803aa9079 15 #define CS1 D9
laserdad 5:d7b803aa9079 16 #define CS2 D10
laserdad 5:d7b803aa9079 17 #define MOSI_1 D11
laserdad 5:d7b803aa9079 18 #define MISO_1 D12
laserdad 5:d7b803aa9079 19 #define SCLK_1 D13
laserdad 5:d7b803aa9079 20 #define VDD 3.3
laserdad 6:c3db4eff9170 21
laserdad 6:c3db4eff9170 22
laserdad 5:d7b803aa9079 23 AnalogOut vOut1(A3);
laserdad 5:d7b803aa9079 24 AnalogOut vOut2(A4);
laserdad 5:d7b803aa9079 25 DigitalOut cs_pin1(CS1);
laserdad 5:d7b803aa9079 26 DigitalOut cs_pin2(CS2);
laserdad 5:d7b803aa9079 27 SPI spi(MOSI_1, MISO_1, SCLK_1);
laserdad 5:d7b803aa9079 28 MAX11410 adc1(&spi,&cs_pin1);
laserdad 5:d7b803aa9079 29 MAX11410 adc2(&spi,&cs_pin2);
laserdad 5:d7b803aa9079 30 //Serial pc(USBTX, USBRX,115200);
laserdad 5:d7b803aa9079 31 Serial pc(USBTX, USBRX, 9600);
laserdad 6:c3db4eff9170 32 Serial rpi(PA_9,PA_10,115200);
laserdad 5:d7b803aa9079 33
laserdad 5:d7b803aa9079 34 void starting()
smartsystemdesign 2:39ba9beabf3c 35 {
laserdad 5:d7b803aa9079 36 pc.printf("this program has started\r\n");
laserdad 5:d7b803aa9079 37 }
laserdad 5:d7b803aa9079 38
simon 0:4f78cdfc99de 39
laserdad 6:c3db4eff9170 40 char getNthByte(int32_t data, int ind)
laserdad 6:c3db4eff9170 41 {
laserdad 6:c3db4eff9170 42 return (data>>(8*ind)) & 0x000000FF ;
laserdad 6:c3db4eff9170 43 }
laserdad 5:d7b803aa9079 44
laserdad 5:d7b803aa9079 45
laserdad 5:d7b803aa9079 46 void print8bitRegsAdc1(char start_reg,char end_reg)
laserdad 5:d7b803aa9079 47 {
laserdad 5:d7b803aa9079 48 bool int_status;
laserdad 5:d7b803aa9079 49 char val;
laserdad 5:d7b803aa9079 50 for(int n=start_reg;n<=end_reg;n++)
laserdad 5:d7b803aa9079 51 {
laserdad 5:d7b803aa9079 52 val = adc1.read8bits(n,&int_status);
laserdad 5:d7b803aa9079 53 pc.printf("reg %02x, val =%02x\r\n",n,val);
simon 0:4f78cdfc99de 54 }
laserdad 5:d7b803aa9079 55
laserdad 5:d7b803aa9079 56 }
laserdad 5:d7b803aa9079 57
laserdad 5:d7b803aa9079 58 void print8bitRegsAdc2(char start_reg,char end_reg)
laserdad 5:d7b803aa9079 59 {
laserdad 5:d7b803aa9079 60 bool int_status;
laserdad 5:d7b803aa9079 61 char val;
laserdad 5:d7b803aa9079 62 for(int n=start_reg;n<=end_reg;n++)
laserdad 5:d7b803aa9079 63 {
laserdad 5:d7b803aa9079 64 val = adc2.read8bits(n,&int_status);
laserdad 5:d7b803aa9079 65 pc.printf("reg %02x, val =%02x\r\n",n,val);
laserdad 5:d7b803aa9079 66 }
simon 0:4f78cdfc99de 67 }
smartsystemdesign 2:39ba9beabf3c 68
laserdad 5:d7b803aa9079 69 int main()
smartsystemdesign 2:39ba9beabf3c 70 {
laserdad 5:d7b803aa9079 71 int32_t channel_data[10];
laserdad 6:c3db4eff9170 72 double vdiff=0.01;
laserdad 5:d7b803aa9079 73 vOut1 = 0.5-vdiff/2;
laserdad 5:d7b803aa9079 74 vOut2 = 0.5+vdiff/2;
laserdad 5:d7b803aa9079 75 starting();
laserdad 5:d7b803aa9079 76 bool int_state;
laserdad 5:d7b803aa9079 77 spi.format(8,MAX11410_SPI_MODE); //configure number of spi bits 8, 16
laserdad 5:d7b803aa9079 78 spi.frequency(8000000); // Max 8MHz
laserdad 5:d7b803aa9079 79 //read chip ID
laserdad 5:d7b803aa9079 80
laserdad 5:d7b803aa9079 81 pc.printf("chip ID %d\r\n",adc1.read8bits(REG_PART_ID,&int_state) );
laserdad 5:d7b803aa9079 82
laserdad 5:d7b803aa9079 83 //config ADC 1
laserdad 5:d7b803aa9079 84 adc1.reset(); //POR
laserdad 5:d7b803aa9079 85 // adc2.reset();
laserdad 5:d7b803aa9079 86
laserdad 5:d7b803aa9079 87 //check default register configs
laserdad 5:d7b803aa9079 88 pc.printf("default regs for ADC1\r\n");
laserdad 5:d7b803aa9079 89 print8bitRegsAdc1(REG_PD,REG_WAIT_START);
laserdad 5:d7b803aa9079 90
laserdad 5:d7b803aa9079 91 pc.printf("default regs for ADC2\r\n");
laserdad 5:d7b803aa9079 92 print8bitRegsAdc2(REG_PD,REG_WAIT_START);
laserdad 5:d7b803aa9079 93
laserdad 5:d7b803aa9079 94
laserdad 5:d7b803aa9079 95 //config interrupts, PGA, Buffer, polarity, reference
laserdad 5:d7b803aa9079 96 char mode_config = MODE_NORMAL;
laserdad 5:d7b803aa9079 97 adc1.write8bitReg(REG_PD,mode_config); //got to normal mode
laserdad 5:d7b803aa9079 98 adc2.write8bitReg(REG_PD,mode_config); //got to normal mode
laserdad 5:d7b803aa9079 99
laserdad 5:d7b803aa9079 100 char filter_config = FIR_SIXTY | _RATE(4) ; //
laserdad 5:d7b803aa9079 101 adc1.write8bitReg( REG_FILTER,filter_config );
laserdad 5:d7b803aa9079 102 adc2.write8bitReg( REG_FILTER,filter_config );
laserdad 5:d7b803aa9079 103
laserdad 5:d7b803aa9079 104 char ctrl_config = INT_CLOCK | BIPOLAR | TWOS_COMP | _PBUF_EN(0) | _NBUF_EN(0) | REF_AVDD ; //ADC configuration
laserdad 5:d7b803aa9079 105 adc1.write8bitReg( REG_CTRL, ctrl_config );
laserdad 5:d7b803aa9079 106 adc2.write8bitReg( REG_CTRL, ctrl_config );
laserdad 5:d7b803aa9079 107
laserdad 5:d7b803aa9079 108 char source_config = VBIAS_ACTIVE | BRN_OFF | _IDAC(0); //not sourcing current
laserdad 5:d7b803aa9079 109 adc1.write8bitReg( REG_SOURCE,source_config );
laserdad 5:d7b803aa9079 110 adc2.write8bitReg( REG_SOURCE,source_config );
laserdad 5:d7b803aa9079 111
laserdad 5:d7b803aa9079 112 uint32_t status_ie_config = DATA_RDY_INT | CAL_RDY_INT | CONV_RDY_INT;
laserdad 5:d7b803aa9079 113 adc1.write24bitReg(REG_STATUS_IE,status_ie_config);
laserdad 5:d7b803aa9079 114 adc2.write8bitReg( REG_SOURCE,source_config );
laserdad 5:d7b803aa9079 115
laserdad 5:d7b803aa9079 116 char gain_setting = 0;
laserdad 5:d7b803aa9079 117 char pga_config = PGA | _GAIN_EXP(gain_setting) ; //no gain
laserdad 5:d7b803aa9079 118 adc1.write8bitReg(REG_PGA,pga_config);
laserdad 5:d7b803aa9079 119 adc2.write8bitReg(REG_PGA,pga_config);
laserdad 5:d7b803aa9079 120
laserdad 5:d7b803aa9079 121 pc.printf("PGA gain = %d\r\n",1<<gain_setting);
laserdad 5:d7b803aa9079 122
laserdad 5:d7b803aa9079 123 //check register writes
laserdad 5:d7b803aa9079 124 pc.printf("checking register writes\r\n");
laserdad 5:d7b803aa9079 125 pc.printf("reg %02x, val %02x, set to %02x\r\n",REG_PD,adc1.read8bits(REG_PD,&int_state),mode_config);
laserdad 5:d7b803aa9079 126 pc.printf("reg %02x, val %02x, set to %02x\r\n",REG_FILTER,adc1.read8bits(REG_FILTER,&int_state),filter_config);
laserdad 5:d7b803aa9079 127 pc.printf("reg %02x, val %02x, set to %02x\r\n",REG_CTRL,adc1.read8bits(REG_CTRL,&int_state),ctrl_config);
laserdad 5:d7b803aa9079 128 pc.printf("reg %02x, val %02x, set to %02x\r\n",REG_SOURCE,adc1.read8bits(REG_SOURCE,&int_state),source_config);
laserdad 5:d7b803aa9079 129 pc.printf("reg %02x, val %06x, set to %06x\r\n",REG_STATUS_IE,adc1.read24bits(REG_STATUS_IE,&int_state),status_ie_config);
laserdad 5:d7b803aa9079 130 pc.printf("reg %02x, val %02x, set to %02x\r\n",REG_PGA,adc1.read8bits(REG_PGA,&int_state),pga_config);
laserdad 5:d7b803aa9079 131
laserdad 5:d7b803aa9079 132 // for each channel 1-5
laserdad 5:d7b803aa9079 133 for(int n=0;n<5;n++)
laserdad 5:d7b803aa9079 134 {
laserdad 5:d7b803aa9079 135 //select channel
laserdad 5:d7b803aa9079 136 char p_ch = 2*n<<4;
laserdad 5:d7b803aa9079 137 char n_ch = 2*n+1;
laserdad 5:d7b803aa9079 138 adc1.write8bitReg(REG_MUX_CTRL0, p_ch | n_ch );
laserdad 5:d7b803aa9079 139
laserdad 5:d7b803aa9079 140 //select data output register and begin conversion
laserdad 5:d7b803aa9079 141 adc1.write8bitReg(REG_CONV_START, (_DEST(n) | SINGLE_CONV) );
laserdad 5:d7b803aa9079 142
laserdad 5:d7b803aa9079 143 //optional: cal Gain
laserdad 5:d7b803aa9079 144
laserdad 5:d7b803aa9079 145 //optional: cal Offset
laserdad 5:d7b803aa9079 146
laserdad 5:d7b803aa9079 147 //optional: store cal parameters
laserdad 5:d7b803aa9079 148
laserdad 5:d7b803aa9079 149 //begin conversion
laserdad 5:d7b803aa9079 150
laserdad 5:d7b803aa9079 151 //wait for interrupt
laserdad 5:d7b803aa9079 152 while(!adc1.interrupt() )
laserdad 5:d7b803aa9079 153 {
laserdad 5:d7b803aa9079 154 wait_ms(CONV_DELAY_MS);//do nothing
laserdad 5:d7b803aa9079 155 }
laserdad 5:d7b803aa9079 156
laserdad 5:d7b803aa9079 157 //read conversion
laserdad 5:d7b803aa9079 158 channel_data[n] = adc1.read24bitsSigned(REG_DATA0+n,&int_state);
laserdad 5:d7b803aa9079 159 pc.printf("%d, ",channel_data[n]);
laserdad 5:d7b803aa9079 160 } //channel sweep
laserdad 5:d7b803aa9079 161 pc.printf("\r\n");
laserdad 5:d7b803aa9079 162
laserdad 5:d7b803aa9079 163
laserdad 5:d7b803aa9079 164 //config ADC 2: repeat above
laserdad 5:d7b803aa9079 165
laserdad 5:d7b803aa9079 166
laserdad 6:c3db4eff9170 167 uint32_t checksum;
laserdad 6:c3db4eff9170 168 char byte2print[40];
laserdad 5:d7b803aa9079 169
laserdad 6:c3db4eff9170 170 while(1)
laserdad 6:c3db4eff9170 171 {
laserdad 6:c3db4eff9170 172 for(int n=0; n<5; n++)
laserdad 6:c3db4eff9170 173 {
laserdad 6:c3db4eff9170 174 //read each channel
laserdad 6:c3db4eff9170 175 //select channel
laserdad 6:c3db4eff9170 176 char p_ch = 2*n<<4;
laserdad 6:c3db4eff9170 177 char n_ch = 2*n+1;
laserdad 6:c3db4eff9170 178 adc1.write8bitReg(REG_MUX_CTRL0, p_ch | n_ch );
laserdad 6:c3db4eff9170 179
laserdad 6:c3db4eff9170 180 //select data output register and begin conversion
laserdad 6:c3db4eff9170 181 adc1.write8bitReg(REG_CONV_START, (_DEST(n) | SINGLE_CONV) );
laserdad 6:c3db4eff9170 182
laserdad 6:c3db4eff9170 183 //optional: cal Gain
laserdad 6:c3db4eff9170 184
laserdad 6:c3db4eff9170 185 //optional: cal Offset
laserdad 6:c3db4eff9170 186
laserdad 6:c3db4eff9170 187 //optional: store cal parameters
laserdad 6:c3db4eff9170 188
laserdad 6:c3db4eff9170 189 //begin conversion
laserdad 6:c3db4eff9170 190
laserdad 6:c3db4eff9170 191 //wait for interrupt
laserdad 6:c3db4eff9170 192 while(!adc1.interrupt() )
laserdad 6:c3db4eff9170 193 {
laserdad 6:c3db4eff9170 194 wait_ms(CONV_DELAY_MS);//do nothing
laserdad 6:c3db4eff9170 195 }
laserdad 6:c3db4eff9170 196
laserdad 6:c3db4eff9170 197 //read conversion
laserdad 6:c3db4eff9170 198 channel_data[n] = adc1.read24bitsSigned(REG_DATA0+n,&int_state);
laserdad 6:c3db4eff9170 199
laserdad 6:c3db4eff9170 200 }
laserdad 6:c3db4eff9170 201 for(int n=0; n<5; n++)
laserdad 6:c3db4eff9170 202 {
laserdad 6:c3db4eff9170 203 //read each channel
laserdad 6:c3db4eff9170 204 //select channel
laserdad 6:c3db4eff9170 205 char p_ch = 2*n<<4;
laserdad 6:c3db4eff9170 206 char n_ch = 2*n+1;
laserdad 6:c3db4eff9170 207 adc2.write8bitReg(REG_MUX_CTRL0, p_ch | n_ch );
laserdad 6:c3db4eff9170 208
laserdad 6:c3db4eff9170 209 //select data output register and begin conversion
laserdad 6:c3db4eff9170 210 adc2.write8bitReg(REG_CONV_START, (_DEST(n) | SINGLE_CONV) );
laserdad 6:c3db4eff9170 211
laserdad 6:c3db4eff9170 212 //optional: cal Gain
laserdad 6:c3db4eff9170 213
laserdad 6:c3db4eff9170 214 //optional: cal Offset
laserdad 6:c3db4eff9170 215
laserdad 6:c3db4eff9170 216 //optional: store cal parameters
laserdad 6:c3db4eff9170 217
laserdad 6:c3db4eff9170 218 //begin conversion
laserdad 6:c3db4eff9170 219
laserdad 6:c3db4eff9170 220 //wait for interrupt
laserdad 6:c3db4eff9170 221 while(!adc2.interrupt() )
laserdad 6:c3db4eff9170 222 {
laserdad 6:c3db4eff9170 223 wait_ms(CONV_DELAY_MS);//do nothing
laserdad 6:c3db4eff9170 224 }
laserdad 6:c3db4eff9170 225
laserdad 6:c3db4eff9170 226 //read conversion
laserdad 6:c3db4eff9170 227 channel_data[n+5] = adc2.read24bitsSigned(REG_DATA0+n,&int_state);
laserdad 6:c3db4eff9170 228 }
laserdad 6:c3db4eff9170 229
laserdad 6:c3db4eff9170 230 // calc checksum
laserdad 6:c3db4eff9170 231 checksum=0;
laserdad 6:c3db4eff9170 232 for (int n=0; n<10; n++)
laserdad 6:c3db4eff9170 233 {
laserdad 6:c3db4eff9170 234 checksum += channel_data[n];
laserdad 6:c3db4eff9170 235 }
laserdad 6:c3db4eff9170 236
laserdad 6:c3db4eff9170 237 for (int n=0; n<10; n++)
laserdad 6:c3db4eff9170 238 {
laserdad 6:c3db4eff9170 239 for(int m=0;m<4;m++)
laserdad 6:c3db4eff9170 240 {
laserdad 6:c3db4eff9170 241 byte2print[n*4+m] = getNthByte(channel_data[n],3-m);
laserdad 6:c3db4eff9170 242 }
laserdad 6:c3db4eff9170 243 }
laserdad 6:c3db4eff9170 244 //print data and checksum
laserdad 6:c3db4eff9170 245
laserdad 6:c3db4eff9170 246 // print header 0x6601
laserdad 6:c3db4eff9170 247 rpi.putc(0x66);
laserdad 6:c3db4eff9170 248 rpi.putc(0x01);
laserdad 6:c3db4eff9170 249 for (int n =0; n<40;n++)
laserdad 6:c3db4eff9170 250 {
laserdad 6:c3db4eff9170 251 rpi.putc(byte2print[n]);
laserdad 6:c3db4eff9170 252 }
laserdad 6:c3db4eff9170 253 rpi.putc( (char) checksum );
laserdad 6:c3db4eff9170 254 } //end while
laserdad 5:d7b803aa9079 255
laserdad 5:d7b803aa9079 256 } //END MAIN