400x400 mipi round lcd module free sample

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There are examples on the Lattice site of doing MIPI with MachXO2 (And i thing a few others). But its not all open source. The actual MIPI part of it is provided as a binary blob, but it does the hard parts of MIPI for you of driving the IO pins and synchronizing itself to the packets on the bus. For my use with a raspberry pi i found that the provided demo code didn"t quite work so i rewrote some of the data parsing, but the part that turns MIPI into a convenient 8 bit parallel bus worked great.

You have to be part of the MIPI group to get the full spec, but i could still find enough information online to be able to know what every byte sent over the bus meant.

Also if you are looking to drive a LCD you likely also need the LCD documentation for it or at the very least a product that runs the LCD so you can sniff the data. This is because MIPI is not a completely intercompatible bus like HDMI where you plug it in and it simply works. The LCD might have specific timing requirements to make it happy or even require an initialization sequence. Much like some parallel RGB bus LCDs need to be initialized and configured over I2C or SPI these MIPI displays can have similar internal registers that sometimes have to be written to using specific MIPI commands. Timings can be found out by trial and error, but whole initialization sequences no way.

The driver used in this LCD is GC9A01, with a resolution of 240RGB×240 dots and 129600 bytes of GRAM inside. This LCD supports 12-bits/16-bits/18-bits data bus by MCU interface, which are RGB444, RGB565, RGB666.

For most LCD controllers, the communication method of the controller can be configured, they are usually using 8080 parallel interface, 3-line SPI, 4-line SPI, and other communication methods. This LCD uses a 4-line SPI interface for reducing GPIO and fast speed.LCD

If you are wondering which point is the first pixel of the screen (because the screen is round), you can understand it as a square screen with an inscribed circle drawn in it, and it only displays the content in this inscribed circle. The pixels in other locations are simply discarded (just like most round smartwatches on the market)

LCD can’t be driven with DC (Direct Current), it has to be driven with AC (Alternative Current) and the overall current has to be ZERO. Otherwise, the Liquid Crystal Material will be damaged sooner or later.

The Controller IC receives data written in ASCII or JIS code from the MPU and stores this data in RAM. This data is then converted into serial character patterns and transferred to the LCD driver IC.

Drive/Controller IC is probably the most commonly found in a graphics module. This IC receives data from the MPU and stores it in RAM. Also, it accepts commands directly from the MPU for both the common and segment drivers.

RGB interface often been used in control large-scale high-resolution LCD display. It include 6/16/18bits data (like R0, R1, , , G0, G1, , ,B0, B1, , , ), VSYNC (Vertical synchronization), HSYNC (Horizontal synchronization).

Aimed at reducing the cost of display controllers in a mobile device. It is commonly targeted at LCD and similar display technologies. It defines a serial bus and a communication protocol between the host (source of the image data) and the device (destination of the image data)