How to Build Drivers for Zephyr | Interrupt

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Hello @jaredwolff

I am currently using nRF52840 DK. On that board I2S peripheral is not available by default in device tree, but Zephyr has provided drivers for I2S. So i added I2S peripheral in dtsi and dts file. Also configured CONFIG_I2S=y in project configuration file. And after building the object i can see it’s giving a status Okay in Zephy.dts file.

Here is the snippet of the zephyr.dts

		i2s: i2s@40025000 {
		#address-cells = < 0x1 >;
		#size-cells = < 0x0 >;
		compatible = "nordic,nrf-i2s";
		reg = < 0x40025000 0x1000 >;
		interrupts = < 0x25 0x1 >;
		status = "okay";
		label = "I2S";
		sck-pin = < 0x11 >;
		lrck-pin = < 0x12 >;
		sdin-pin = < 0x13 >;
		my_i2s_device: mp34dt05@0 {
			compatible = "st,mpxxdtyy";
			reg = < 0x0 >;
			label = "MP34DT05";
		};
	};

Now after getting the device label, when i call device get binding function on it, result is a NULL pointer. Most probably the DEVICE_DEFINE() is not getting executed for I2S peripheral otherwise it would have found the I2S peripheral config pointers from ROM.

Below is my code for reference :

#include <zephyr.h> 
#include <sys/printk.h>
#include <sys/util.h>
#include <string.h>
#include <usb/usb_device.h>
#include <drivers/uart.h>
#include <stdio.h>
#include <device.h>
#include <devicetree.h>
#include <drivers/gpio.h>
#include <drivers/i2s.h>


//Device structures
 const struct device *usb_dev;
const struct device *i2s_dev;


 / * The devicetree node identifier for the I2S */
 #define MY_I2S DT_NODELABEL(i2s)



void main(void)
{

   uint32_t dtr = 0;

//get usb device
usb_dev = device_get_binding(CONFIG_UART_CONSOLE_ON_DEV_NAME);

if (usb_enable(NULL)) {
        return;
}

while (!dtr) {
        uart_line_ctrl_get(usb_dev, UART_LINE_CTRL_DTR, &dtr);
}

if (strlen(CONFIG_UART_CONSOLE_ON_DEV_NAME) !=
    strlen("CDC_ACM_0") ||
    strncmp(CONFIG_UART_CONSOLE_ON_DEV_NAME, "CDC_ACM_0",
            strlen(CONFIG_UART_CONSOLE_ON_DEV_NAME))) {
        printk("Error: Console device name is not USB ACM\n");

        return;
}

k_msleep(100);

    //Checking status of I2S in device tree
  #if DT_NODE_HAS_STATUS(MY_I2S, okay)
        printk("I2S enabled in Zephyr DeviceTree \r\n");
 #else 
       printk("I2S is disabled in DeviceTree\r\n");
 #endif

  //Get I2S device 
     i2s_dev = device_get_binding(DT_LABEL(MY_I2S));
     if(i2s_dev == NULL){
      printk("I2S not found\r\n");    
    }else{
     printk("I2S found\r\n");    
  }


 while (1) 
   {

   }        
 }

Do you have any idea how to solve this issue ?