for android instal Automatic PDF Processor 1.28

1.28-inch Touch LCD is composed of surface toughened glass + thin film FILM material, which has high strength, strong hardness, and good light transmittance.As can be seen from the figure, when the first falling edge of SCLK starts to transmit data, 8-bit data is transmitted in one clock cycle, using SPI0, bit-by-bit transmission, high-order first, and low-order last.The level of CPOL determines the idle state level of the serial synchronous clock.When CPHA = 0, data acquisition is performed on the first transition edge. The level of CPHA determines whether the serial synchronization clock is collected on the first clock transition edge or the second clock transition edge.For SPI communication, data is transmitted with timing, that is, the combination of clock phase (CPHA) and clock polarity (CPOL).SDA is the transmitted data, that is, RGB data.D/CX is the data/command control pin of the chip, when DC = 0, write command, when DC = 1, write data.CSX is the slave chip selection, and the chip will be enabled only when CS is low.

RESX is reset, it is pulled low when the module is powered on, usually set to 1.Note: The difference from the traditional SPI protocol is that the data line sent from the slave to the host is hidden because it only needs to be displayed.Most of the circular LCDs on the market are the same. We only display content in this inscribed circle, and the pixels in other positions are directly discarded. In fact, you can understand it as a square screen with an inscribed circle drawn inside.Some friends may have doubts, the screen is circular, so which point is the first pixel of the screen? How to determine the coordinates?.This LCD uses a four-wire SPI communication interface, which can greatly save GPIO ports, and the communication speed will be faster. For most LCD controllers, the communication mode of the controller can be configured, usually with an 8080 parallel interface, three-wire SPI, four-wire SPI, and other communication methods.It supports MCU port with 12/16/18 data bus, that is, the common RGB format of RGB444, RGB565, and RGB666.

This LCD adopts built-in driver GC9A01 with a resolution of 240RGB × 240 dots, which has an internal GRAM of 129,600 bytes.

LCD data/command pin, low for command, high for data

Please make sure the power supply is as same as the logic level, or it may cause abnormal operation.

We provide demos of Raspberry Pi, Raspberry Pi Pico, STM32, and Arduino for this product.

4.7 MicroPython (Applicable for Raspberry Pi Pico).

4.2 C/C++ Development Environment Installation.

3.3.1.1 Bottom Layer Hardware Interface.

For android instal Automatic PDF Processor 1.28