lcd_i2c_setCursor function for LCD 20x04

[luke514]

I hope this is the right section of the site to ask this question, otherwise please redirect this thread.

I just started programming, I am using a 20x04 LCD with stm32F407G and I need the classic function "

lcd_i2c_setCursor (row, col); ". I am not able to implement it by modifying the one already in the 16x02 display library.

So I am asking if you can redirect/send me to a post or link where this function is explained for 20x04 or if someone already has it and can attach the code so that I can "copy-paste" it into my project.

Or if there is a way to modify the function " lcd_i2c_setCursor (row, col); " that I have for the 16x02 LCD ... we can modify it here together:

void lcd16x2_i2c_setCursor(uint8_t row, uint8_t col)
{
 uint8_t maskData;
 maskData = (col)&0x0F;
 if(row==0)
 {
 maskData |= (0x80);
 lcd16x2_i2c_sendCommand(maskData);
 }
 else
 {
 maskData |= (0xc0);
 lcd16x2_i2c_sendCommand(maskData);
 }
}

Thank you.

[Foued_KH]

Hello @luke514​ ,

You can refer to this example.

Please find the attachment the I2C-lcd libraries.

 /* USER CODE BEGIN 2 */
 
 lcd_init();
 
 lcd_send_cmd (0x80|0x00);
 lcd_send_string("FIRST");
 
 lcd_send_cmd (0x80|0x40);
 lcd_send_string("SECOND");
 
 lcd_send_cmd (0x80|0x1C);
 lcd_send_string("THIRD");
 
 lcd_send_cmd (0x80|0x54);
 lcd_send_string("FINISH");
 
 /* USER CODE END 2 */
 
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
	 for (int i=0; i<5; i++)
	 {
		 lcd_send_cmd (0x1C); // display shift right
		 HAL_Delay(350);
	 }
 
	 for (int i=0; i<5; i++)
	 {
		 lcd_send_cmd (0x18); // display shift left
		 HAL_Delay(350);
	 }
 }
 /* USER CODE END 3 */

Foued

[luke514]

Thank you for your reply! I finally managed a few weeks ago to find the function I needed.