bascom avr tft lcd price

Included in this sample is a tutorial how you cam make your own characters with my converter tool. This tool converts the Maxim mcm files to Bascom data lines.

Special commands for LCD-displays , I2C chips and 1WIRE chips, PC keyboard, matrix keyboard, RC5 reception, software UART, SPI master and slave, IR remote code, graphical LCD"s

In Part 1 of this series I covered the basic features and advantages of the FTDI FT800 EVE graphics controller chip. In doing so, I mentioned several other methods of obtaining color TFT touch-screen functionality, including both “dumb” TFT displays that interface to your MCU via an 8/16 bit parallel port, as well as “intelligent” TFT display modules such as those sold by 4D Systems. I feel that FTDI"s EVE solution is both cost-effective and lends itself well to being interfaced with modest 8-bit MCUs, like the Atmel Mega328P that is found on many of the popular Arduino boards (i.e. the Uno). This month I"m going to show the reader how to get started using some of the EVE-powered TFT touch-screen modules that are currently available.

If you think like me, the physical hook-up of TFT display modules to your favourite MCU is probably the least of your worries. My prime consideration is how difficult it will be to write or obtain the necessary software drivers to interface such display modules with the Atmel AVR MCU family that I generally use. This consideration is further complicated by the fact that I generally write programs using Bascom/AVR and not C/C++. While I hate to admit it, it appears that the majority of drivers for peripheral devices/chips are supplied by the vendors in the form of C/C++ libraries. Part of the reason for this is that AVR-based Arduino boards are extremely popular and the Arduino is programmed in C/C++. Arduino programs or “sketches” are basically C/C++ code which has been “wrapped” by a user-friendly IDE which hides a lot of the complexity of C/C++.

To save you from having to “re-invent the wheel”, what I have done is carefully go through FTDI"s example code, remove as much extra code as possible, and simplify what remained as much as possible. If a Bascom/AVR fan like myself can successfully use these FTDI EVE modules in projects, you should be able to do so as well!

So, let"s see how we can hook up our EVE-based display to an AVR Mega328. The interface is just a standard SPI interface, with a couple of extra lines to handle the board Reset/Power-down and an optional interrupt. Depending upon which type of module you have, the logic levels required will be either strictly 3.3V or 3.3/5V switchable. See Table 1 in Part 1 to determine which is applicable to your board. If you have a 3.3V only module, but are using an MCU powered by 5V (i.e. an Arduino Uno), then you will have to use some level-shifting circuitry. I described a simple resistive logic level converter in Figure 1 of Part 1, which is simple and works well for this purpose.

HMI module (Human-Machine Interface) with a color LCD TFT 2.4" display with a resolution of 320x240 px. It is equipped with a resistive touch panel that ensures user interaction with the system being built. The panel has a built-in microcontroller that controls the display, a microSD card slot and Flash memory The module communicates with an external driver via the UART interface, thanks to which it can work with popular development kits, such as Arduino, Raspberry Pi or STM32. It is powered with a voltage of 5 V using the attached module and cables. all projects where a user control panel is required, e.g. on production lines.

This is a graphics library for the family of small colour TFT displays based on the ST7735 and ST7789 driver chips. These are really nice displays; bright, colourful, available in a variety of useful sizes, and available at low cost from suppliers like Adafruit, AliExpress, or Banggood:

Unlike most other TFT display libraries this one doesn"t require a memory buffer, allowing it to be run on any processor down to an ATtiny85. The displays are SPI and require four pins to drive the display, leaving one pin free on an ATtiny85 to interface to another device, such as a temperature sensor. If you need more pins choose a larger chip, such as the ATtiny84; see Using the library with other AVR chips at the end of the article for information about how to convert the code for different chips.

I"ve published a library for a colour OLED display in a previous article: Colour Graphics Library. The main difference between the colour TFT displays and the colour OLED displays is that the TFT displays are not self-illuminating, and so need a backlight; they therefore have a slightly higher power consumption. However, they are exceedingly cheap, and they are available in larger sizes than the colour OLED displays.

The ATtiny85 and other AVR processors supports toggling of one or more bits in a port, so provided you set all the pins to their disabled state at startup, for speed the display access routines can simply toggle the appropriate pins to enable or disable them.

14th January 2020: Tested the program with the Adafruit 1.3" 240x240 TFT display, and updated the program to correct a problem when rotating the image on that display.

can someone help me to operate these two displays with the arduino IDE aatmega2560 chip without bootloader and without arduino just with ATmega2560 and bascom-avr.