Working With Stm32 Microprocessor; Spi - Waveshare 6inch e-Paper HAT User Manual

6inch e-Paper HAT User Manual
The command ;./IT8951 0 0 01.bmp', the first two parameters is X and Y
coordinate of picture's left-top, 01.bmp is the file name of picture
【Note】For better display, you can try to adjust the VCOM value, the VCOM voltage
are different among different panels. The recommend VCOM voltage is stuck in the
FPC. For example, if the VCOM voltage= -1.5V, the related VCOM value is 1500
WORKING WITH STM32 MI CROPROCESSOR
Because IT8951 will cost big size of RAM, some of STM32 cannot support without
external SDRAM device. So, we here use Open429I as test board, Open429I integrates
IS42S16400J (64-MBIT) SDRAM, has full memory to drive the 6inch e-paper.
Working with STM32, you can use SPI, I80 or I2C interface. SPI is simple and need
a few of GPIO, its speed can also meet the requirement of most applications. I80 is
also simple and fast, however, it need to use lots of GPIO. I2C is every slow, which we
don't recommend.

SPI

1. Hardware connection
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