- Avr studio 5 lcd library how to#
- Avr studio 5 lcd library driver#
- Avr studio 5 lcd library software#
The code comes with the demo paint application seen in the video. The code itself is available here, and on Github. To understand what you can and what you can't do with this code, have a look here.
Avr studio 5 lcd library software#
This software library is available as open source, licensed under the LGPL license. Lcd.drawString(0, textY(18,2), tmp, 2, YELLOW, BLACK) draw some text but only once per second Lcd.drawRectFilled(x, y, 10, 10, penColor) PenColor = buttons // if a match is found, save color Using the ILI9341 library, the entire code gets as simple as:įor (int i=0 i buttons & x buttons & y < buttons + buttons) Touch.init(&touchCLK, &touchCS, &touchDI, &touchDO, &touchIRQ) Using these, the initialisation part was done with just a few lines of code, clean and elegant: TouchIRQ(&PORTA, PA0), touchDO(&PORTA, PA1), touchDI(&PORTA, PA2), touchCS(&PORTA, PA3),touchCLK(&PORTA, PA4)
To configure and use all these pins, I took advantage of my DigitalPin class, versatile when it comes to both output and input application.ĭigitalPin pinDC(&PORTC, PC4), pinRESET(&PORTC, PC5), pinCS(&PORTC, PC6), The LCD interface has 9pins, while the touchscreen uses 5 (the T_ pins). These boards also have an SDCard slot and another SPI interface for it, at the top. The touchscreen part required some additional work, and due to mechanical assembly of the sensing layer over the display, certain offsets can produce wrong coordinates, so we’ll need calibration (but only for the more sensitive applications). So the entire atmega128 microcontroller board was powered at 3.3V, and it was nice to see the atmega128a can run at 16MHz with so little voltage. My tests show it will tolerate 5V but will only work with 3.3V. Remember that the ILI9341 requires 3.3V and according to the datasheet it is not 5V tolerant. 16×2 means it can display 2 rows of 16 characters. 16×2 character LCD is a very commonly used LCD module in electronic projects and products.
Avr studio 5 lcd library how to#
The microcontroller – an Atmega128 – uses normal SPI transfer and the external quartz crystal is 16MHz for faster LCD display. In this tutorial we will see How to interface a 16×2 character LCD Module with PIC 16F877A Microcontroller using CCS C Compiler.
The LCD code part was very much similar to my previous work on the ILI9163 but this time I went for faster SPI communication (also due to the bigger resolution).
Avr studio 5 lcd library driver#
All that was left to do was putting the driver code together. I got a few QVGA LCD’s with resistive touchscreen for an ongoing project.
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