[arduino code examples for A6v3]-09 Dimmer analog output by GP8403

[admin]

Code:

/*
* Made by KinCony IoT: https://www.kincony.com
*
* This Arduino program controls the GP8403 DAC I2C chip using an ESP32-S3 board.
* The program sets the DAC outputs for two channels:
* - Channel 0 (CH0) outputs 5V.
* - Channel 1 (CH1) outputs 10V.
*
* The I2C communication is handled using the Wire library, and the SDA and SCL pins
* are custom defined as GPIO12 (SDA) and GPIO11 (SCL).
*
* GP8403 I2C address: 0x58
*/

#include "DFRobot_GP8403.h"

// Initialize the GP8403 DAC object with the I2C address 0x58
DFRobot_GP8403 dac(&Wire, 0x58);

void setup() {
  // Start serial communication for debugging purposes
  Serial.begin(115200);

  // Initialize I2C communication with custom SDA and SCL pins
  Wire.begin(12, 11);  // SDA = GPIO12, SCL = GPIO11

  // Try to initialize the DAC, retry if initialization fails
  while(dac.begin() != 0) {
    Serial.println("Initialization failed, retrying...");
    delay(1000);  // Wait for 1 second before retrying
  }

  // If initialization succeeds
  Serial.println("Initialization successful!");

  // Set the DAC output range to 10V (this setting applies to both channels)
  dac.setDACOutRange(dac.eOutputRange10V);

  // Set the output for DAC channel 0 to 5V
  // Range for 10V mode is 0-10000, so 5000 represents 5V
  dac.setDACOutVoltage(5000, 0);  // Set CH0 to 5V
  Serial.println("Channel 0 set to 5V");

  // Set the output for DAC channel 1 to 10V
  dac.setDACOutVoltage(10000, 1);  // Set CH1 to 10V
  Serial.println("Channel 1 set to 10V");

  // Store the data in the chip's non-volatile memory so it persists after power-off
  dac.store();
  Serial.println("DAC values stored in memory");
}

void loop() {
  // No need to continuously write the values, the DAC holds the last set value
}

arduino ino file download:
  dac-GP8403.zip (Size: 975 bytes / Downloads: 84)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:
  dac-GP8403.ino.merged.zip (Size: 189.99 KB / Downloads: 80)

[admin]

new GP8403 arduino library source code:
   

Code:

/*!
  * @file GP8403outputData.ino
  * @brief Set the output channel, voltage value, and range to convert the I2C signal into two channels of analog voltage signals ranging from 0-5V or 0-10V.
  * @copyright   Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
  * @license     The MIT License (MIT)
  * @author      [Baikunlin](kunlin.bai@dfrobot.com)
  * @version  V1.0
  * @date  2023-05-24
  * @url https://github.com/DFRobot/DFRobot_GP8XXX
  */

#include <DFRobot_GP8XXX.h>
/**************************
----------------------------
| A2 |  A1 | A0 | i2c_addr |
----------------------------
| 0  |  0  | 0  |   0x58   |
----------------------------
| 0  |  0  | 1  |   0x59   |
----------------------------
| 0  |  1  | 0  |   0x5A   |
----------------------------
| 0  |  1  | 1  |   0x5B   |
----------------------------
| 1  |  0  | 0  |   0x5C   |
----------------------------
| 1  |  0  | 1  |   0x5D   |
----------------------------
| 1  |  1  | 0  |   0x5E   |
----------------------------
| 1  |  1  | 1  |   0x5F   |
----------------------------
***************************/
DFRobot_GP8403 GP8403(/*deviceAddr=*/0x58);

// Define custom I2C pins
#define I2C_SDA 12
#define I2C_SCL 11

void setup() {

 
  Serial.begin(9600);

  // Initialize I2C bus with custom SDA and SCL
  Wire.begin(I2C_SDA, I2C_SCL);

  while(GP8403.begin()!=0){
    Serial.println("Communication with the device failed. Please check if the connection is correct or if the device address is set correctly.");
    delay(1000);
  }

  /**
   * @brief Set the DAC output range.
   * @param range DAC output range.
   * @n     eOutputRange5V(0-5V)
   * @n     eOutputRange10V(0-10V)
   */    
  GP8403.setDACOutRange(GP8403.eOutputRange10V);

  /**
   * @brief Set different channel outputs for the DAC values.
   * @param data Data values corresponding to voltage levels.
   * @n With a 12-bit precision DAC module, the data values ranging from 0 to 4095 correspond to voltage ranges of 0-5V or 0-10V, respectively.
   * @param channel Output channels.
   * @n  0:Channel 0.
   * @n  1:Channel 1.
   * @n  2:All channels.
   */ 
  GP8403.setDACOutVoltage(2048,0);  //DAC2 ouptut 5v
  GP8403.setDACOutVoltage(4095,1);  //DAC1 output 10v

  delay(1000);

  //Save the set voltage in the chip's internal memory for power loss recovery.
  //GP8403.store();
}

void loop() {

}

arduino ino file download:

  dac-GP8403-2.zip (Size: 1.07 KB / Downloads: 33)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

  dac-GP8403-2.ino.merged.zip (Size: 192.13 KB / Downloads: 39)