How to properly use i2c communication protocol?

[hanabud]

Describe the bug
I am trying to use 1602 display via I2C communication protocol in Zephyr using STM32F3 DISCOVERY board. The program fails during the initialization of i2c and it prints on serial monitor "Status -5" i.e. I/O error.
I had a code in c (using uVision), that worked just fine, but when I tried to translate it into Zephyr I encountered problems.
Zephyr's 'i2c_write()' function returns the error code 'I/O error'. I used the function as a replacement for HAL's function 'HAL_I2C_Master_Transmit ()'.

Code
This is the code in zephyr project:

void lcdSendCommand(const struct device *const i2c_dev, char cmd){
    char data_u, data_l;
	uint8_t data_t[4];
	data_u = (cmd & 0xf0);
	data_l = ((cmd << 4) & 0xf0);
	data_t[0] = data_u | 0x0C;  // en=1, rs=0
	data_t[1] = data_u | 0x08;  // en=0, rs=0
	data_t[2] = data_l | 0x0C;  // en=1, rs=0
	data_t[3] = data_l | 0x08;  // en=0, rs=0
	int ret;
	ret = i2c_write(i2c_dev, data_t, 4, SLAVE_ADDRESS_LCD);
	printk("Status %d\n", ret);
}

For reference, here is the code in uVision, that works without errors:

void LCDSendCmd (I2C_HandleTypeDef *hi2c1, char cmd)
{
  char data_u, data_l;
	uint8_t data_t[4];
	data_u = (cmd&0xf0);
	data_l = ((cmd<<4)&0xf0);
	data_t[0] = data_u|0x0C;  //en=1, rs=0
	data_t[1] = data_u|0x08;  //en=0, rs=0
	data_t[2] = data_l|0x0C;  //en=1, rs=0
	data_t[3] = data_l|0x08;  //en=0, rs=0
	HAL_I2C_Master_Transmit (hi2c1, SLAVE_ADDRESS_LCD,(uint8_t *) data_t, 4, 100);
}

Expected behavior
I expect status code to be okay and without any errors.

Impact
This problem is slowing my progress on the current project.

Environment :

• OS: Ubuntu
• Board: STM32F3 DISCOVERY

Device tree overlay file
Since I suspect something might be wrongly configured, here is the device tree configuration:

i2c1: &i2c1 {
	pinctrl-0 = <&i2c1_scl_pb6 &i2c1_sda_pb7>;
	pinctrl-names = "default";
	status = "okay";
	clock-frequency = <I2C_BITRATE_FAST>;

	lsm303dlhc_magn: lsm303dlhc-magn@1e {
		compatible = "st,lsm303dlhc-magn";
		reg = <0x1e>;
	};

	lsm303dlhc_accel: lsm303dlhc-accel@19 {
		compatible = "st,lis2dh", "st,lsm303dlhc-accel";
		reg = <0x19>;
		irq-gpios = <&gpioe 4 GPIO_ACTIVE_HIGH>,
			  <&gpioe 5 GPIO_ACTIVE_HIGH>;
	};
};