ST7735
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Published
20 hours ago •
Matiasus
Matiasus
C library for ST7735 LCD driver
C Library for ST7735 1.8 TFT LCD display
ST7735 Description
Detailed information are described in Datasheet ST7735. New version 2.0 allow to connect more than 1 display.
Library
C library is aimed for driving ST7735 1.8 TFT LCD display 162x132 through SPI's Atmega328P / Atmega8 / Atmega16A.
Hardware connection ATMEGA328P -> LCD1
| PORT LCD | PORT ATMEGA328P | Description |
|---|---|---|
| RST | PORTD 7 | Chip Reset Signal |
| CS | PORTB 2 | SPI Chip Select |
| D/C | PORTB 0 | SPI data / command; 1=Data, 0=Command |
| DIN | PORTB 3 | SPI Serial data in / MOSI |
| CLK | PORTB 5 | SPI Serial clock signal |
| UCC | +5V | Supply Voltage +5V |
| BL | PORTB 1 | Backlight control (with resistor 40-150 Ohm) |
| GND | GND | Ground |
Hardware connection ATMEGA328P -> LCD2
| PORT LCD | PORT ATMEGA328P | Description |
|---|---|---|
| RST | PORTD 3 | Chip Reset Signal |
| CS | PORTD 0 | SPI Chip Select |
| D/C | PORTB 0 | SPI data / command; 1=Data, 0=Command |
| DIN | PORTB 3 | SPI Serial data in / MOSI |
| CLK | PORTB 5 | SPI Serial clock signal |
| UCC | +5V | Supply Voltage +5V |
| BL | PORTD 1 | Backlight control (with resistor 40-150 Ohm) |
| GND | GND | Ground |
Usage
Prior defined for MCU Atmega16 / Atmega8 / Atmega328P. Need to be carefull with SPI ports definition.
| PORT | Atmega16 | Atmega8 / Atmega328 |
|---|---|---|
| SS | PB4 | PB2 |
| MOSI | PB5 | PB3 |
| MISO | PB6 | PB4 |
| SCK | PB7 | PB5 |
Tested
Library was tested and proved on a ST7735 1.8″ TFT Display with Atmega328P.
Demonstration
Matiasus