68 lines
1.8 KiB
Arduino
68 lines
1.8 KiB
Arduino
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#include <Wire.h>
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#include <MCP342X.h>
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MCP3424 adc1(0x69);
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MCP3424 adc2(0x68);
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void setup() {
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SerialUSB.begin(57600);
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Wire.begin();
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adc1.generalCall(GC_RESET);
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adc1.creg[CH1].bits = { GAINx1, SR18B, ONE_SHOT, CH1, 1 };
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adc1.creg[CH2].bits = { GAINx1, SR18B, ONE_SHOT, CH2, 1 };
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adc1.creg[CH3].bits = { GAINx1, SR18B, ONE_SHOT, CH3, 1 };
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adc1.creg[CH4].bits = { GAINx1, SR18B, ONE_SHOT, CH4, 1 };
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adc2.creg[CH1].bits = { GAINx1, SR18B, ONE_SHOT, CH1, 1 };
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adc2.creg[CH2].bits = { GAINx1, SR18B, ONE_SHOT, CH2, 1 };
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}
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double value;
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Channel active_ch = CH1;
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bool blocking = false;
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static char * errmsg[] = {"", "underflow", "overflow", "i2c", "in progress", "timeout"};
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void loop() {
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ConvStatus error = adc1.read(active_ch, value, blocking);
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if (error == R_OK || error == R_OVERFLOW || error == R_UNDERFLOW) {
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if (error != R_OK) {
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SerialUSB.print("error: ");
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SerialUSB.print(error, DEC);
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if (active_ch == CH4) SerialUSB.println(" ");
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else SerialUSB.print(" ");
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} else {
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SerialUSB.print("CH");
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SerialUSB.print(1+active_ch, DEC);
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SerialUSB.print(": ");
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SerialUSB.print(value*1000, DEC);
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if (active_ch == CH4) SerialUSB.println(" mV");
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else SerialUSB.print(" mV ");
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}
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switch (active_ch) {
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case CH1: active_ch = CH2; break;
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case CH2: active_ch = CH3; break;
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case CH3: active_ch = CH4; break;
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case CH4: active_ch = CH1; break;
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}
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adc1.startNewConversion(active_ch);
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} else {
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#if 0
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SerialUSB.print("CH");
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SerialUSB.print(1+active_ch, DEC);
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SerialUSB.print(": ");
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SerialUSB.print("error: ");
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SerialUSB.println(errmsg[error]);
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#endif
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}
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asm volatile ("nop");
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}
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