DAC7578 Zephyr DAC Driver

Usage

Add to your west.yml manifest:

manifest:
  projects:
    # DAC Driver
    - name: dac7578
      url: https://github.com/marcrickenbach/dac7578
      revision: master
      path: dac7578

This will import the driver and allow you to use it in your code.

Additionally make sure that you run west update when you've added this entry to your west.yml.

Configuration

Add this entry to your .conf:

# DAC
CONFIG_DAC=y
CONFIG_DAC7578=y

Overlay

Here is an example of defining the DAC7578 in your .overlay:

&i2c2 {
    status = "okay";
    clock-frequency = <400000>;
    pinctrl-0 = <&i2c2_scl_pb10 &i2c2_sda_pb11>;
    pinctrl-names = "default";

    dac7578: dac7578@4c {
        compatible = "ti,dac7578";
        reg = <0x4c>;
    };
};

Import

For read/write functions (and possibly more?), you'll need to include the following:

#include <zephyr/drivers/dac.h>
#include <drivers/dac/dac7578.h>

You can get the device by its node label:

#define DAC DEVICE_DT_GET(DT_NODELABEL(dac7578))

const struct device *const dac_dev = DAC;

static void dac7578_init() {
  /* Check device readiness */
  if (!device_is_ready(dac_dev)) {
    LOG_ERR("dac7578 is NOT ready!");
  }
  ...
};