README.md
MCP4725

MCP4725 is a 12-bit iic-driven high precision DAC module. It has an EEPROM inside, means that the DAC will retain the current voltage output after power-down or reset.

## DFRobot_MCP4725.py Library for Raspberry pi

Provides an Raspberry pi library for reading and interpreting Bosch MCP4725 data over I2C.

Table of Contents


Installation
Methods




Installation

Download and install smbus library on Raspberry pi. Steps to install smbus are provided at:

$> sudo apt-get install -y python-smbus
$> sudo apt-get install -y i2c-tools

Run the program:

$> python DFRobot_MCP4725.py




Run the demo:

$> python OutputVoltage.py




Methods

```C++
/*
 * @brief Set the IIC address
 *        addr = 0x60 or 0x61
 */
def setAddr_MCP4725(self,addr);

/*
 * @brief Setting the base voltage of DAC must equal the power supply voltage,
 *        and the unit is millivolt
 */
def set_refVoltage(self,vol);

/*
 * @brief Output voltage value vol mV
 */
def outputVoltage(self,vol);

/*
 * @brief Output voltage value vol mv and write to the EEPROM,
 *        meaning that the DAC will retain the current voltage output
 *        after power-down or reset
 */
def outputVoltageEEPROM(self,vol);

/*
 * @brief Get the input voltage value
 */
def inputVoltage(self);
```

Credits

Written by DFRobot_xiaowu, 2018. (Welcome to our <![CDATA[]]>website<![CDATA[]]>)