Reference
This article serves as a reference for the DFRobot_ADS1115 library applicable to Arduino, providing installation instructions and details on serial communication protocols, including factory parameters, command tables, and AT command descriptions for reading voltage data.
Library
- Library files applicable to Arduino: DFRobot_ADS1115 Library. Installation instructions: Download and install the library via the Arduino IDE's Library Manager or by adding the library files manually.
Communication Protocol Description
Serial Communication Description
Factory Parameters
- Device Address: 0x00CC
- Baud Rate: 9600bps
Command Table:
| Device Address | Input Register | Number of Registers | Select Channel | Read Device Address | Read Register Address | Read Voltage Data |
|---|---|---|---|---|---|---|
| 0xCC | 0x20 | 0x01 | 0x01 0x02 |
0xBB | 0x31 | 0x03 |
Reading Channel 1 Voltage Data via Serial Port
Host sends: 0xCC 0x20 0x01 0x01 //Select module device address and channel
Then send: 0xBB 0x31 0x03 //Read channel 1 voltage value
Serial AT Command Description
| Command | Meaning | Return Value |
|---|---|---|
| AT | AT Test Command | OK |
| AT+AIN1=? | Read AIN1 Channel Data | AT+AIN1= Decimal number, unit mV, keep two decimal places |
| AT+AIN2=? | Read AIN2 Channel Data | AT+AIN2= Decimal number, unit mV, keep two decimal places |
If a command not listed in the table is used, it will return: ERROR
The following figure will show the voltage values of channel 1 and channel 2 read using AT commands respectively.
Test Record
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