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