Hi
This code causes an error,
#include <SPI.h>
#include <ADS1220.h>
#include <ADS1220_WE.h>
//#define CS_PIN 9
//#define DRDY_PIN 1
#define CS_PIN 9
#define DRDY_PIN 19
ADS1220 ads(CS_PIN, DRDY_PIN);
void setup() {
Serial.begin(115200);
SPI.begin();
ads.begin();
// Set Gain (e.g., 1) and Data Rate (e.g., 20 SPS)
ads.setGain(ADS1220_GAIN_1);
ads.setDataRate(ADS1220_DR_20SPS);
}
void loop() {
// 1. Read Differential Channel 1: AIN1 - AIN0
ads.setMultiplexer(ADS1220_MUX_AIN1_AIN0);
while(!ads.isDataReady()); // Wait for conversion
long diff1 = ads.read();
float voltage1 = ads.toVoltage(diff1);
// 2. Read Differential Channel 2: AIN3 - AIN2
ads.setMultiplexer(ADS1220_MUX_AIN3_AIN2);
while(!ads.isDataReady()); // Wait for conversion
long diff2 = ads.read();
float voltage2 = ads.toVoltage(diff2);
Serial.print("Ch 1 (V): "); Serial.print(voltage1, 6);
Serial.print(" | Ch 2 (V): "); Serial.println(voltage2, 6);
delay(500);
}
error
11 | ADS1220 ads(CS_PIN, DRDY_PIN);
| ^~~~~~~
| ADS1220_H
ADS_one_IC_2_inputs:13:6: error: conflicting declaration of 'void setup()' with 'C' linkage
13 | void setup() {
| ^~~~~
In file included from sketch\ADS_one_IC_2_inputs.ino.cpp:1:
C:\Users\Galinka\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.3.0\cores\esp32/Arduino.h:155:6: note: previous declaration with 'C++' linkage
155 | void setup(void);
| ^~~~~
ADS_one_IC_2_inputs:23:6: error: conflicting declaration of 'void loop()' with 'C' linkage
23 | void loop() {
| ^~~~
C:\Users\Galinka\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.3.0\cores\esp32/Arduino.h:156:6: note: previous declaration with 'C++' linkage
156 | void loop(void);
| ^~~~
C:\Users\Galinka\Documents\Arduino\ADS_one_IC_2_inputs\ADS_one_IC_2_inputs.ino: In function 'void setup()':
ADS_one_IC_2_inputs:16:3: error: 'ads' was not declared in this scope; did you mean 'abs'?
16 | ads.begin();
| ^~~
| abs
ADS_one_IC_2_inputs:20:19: error: 'ADS1220_DR_20SPS' was not declared in this scope; did you mean 'ADS1220_DR_LVL_6'?
20 | ads.setDataRate(ADS1220_DR_20SPS);
| ^~~~~~~~~~~~~~~~
| ADS1220_DR_LVL_6
C:\Users\Galinka\Documents\Arduino\ADS_one_IC_2_inputs\ADS_one_IC_2_inputs.ino: In function 'void loop()':
ADS_one_IC_2_inputs:25:3: error: 'ads' was not declared in this scope; did you mean 'abs'?
25 | ads.setMultiplexer(ADS1220_MUX_AIN1_AIN0);
| ^~~
| abs
ADS_one_IC_2_inputs:25:22: error: 'ADS1220_MUX_AIN1_AIN0' was not declared in this scope; did you mean 'ADS1220_MUX_1_AVSS'?
25 | ads.setMultiplexer(ADS1220_MUX_AIN1_AIN0);
| ^~~~~~~~~~~~~~~~~~~~~
| ADS1220_MUX_1_AVSS
ADS_one_IC_2_inputs:31:22: error: 'ADS1220_MUX_AIN3_AIN2' was not declared in this scope; did you mean 'ADS1220_MUX_3_AVSS'?
31 | ads.setMultiplexer(ADS1220_MUX_AIN3_AIN2);
| ^~~~~~~~~~~~~~~~~~~~~
| ADS1220_MUX_3_AVSS
C:\Users\Galinka\Documents\Arduino\ADS_one_IC_2_inputs\ADS_one_IC_2_inputs.ino: At global scope:
ADS_one_IC_2_inputs:40:2: error: expected '}' at end of input
40 | }
| ^
In file included from C:\Users\Galinka\Documents\Arduino\ADS_one_IC_2_inputs\ADS_one_IC_2_inputs.ino:2:
C:\Users\Galinka\Documents\Arduino\libraries\ADS1220-master/ADS1220.h:35:12: note: to match this '{'
35 | extern "C" {
| ^
exit status 1
'ADS1220' does not name a type; did you mean 'ADS1220_H'?
