stm32 spi tft display for sale
Think is, before I try to modify any library to bend it for the STM32L0 I wanted simply to check my SPI configuration by issuing a simpliest thing, reading LCD ID registers. But that"s the thing, I do not receive any data from ILI9341. I guess all registers are accessible right after the proper reset of the ILI9341, right? So, here is my "init" procedure:
please, see attached screen from my logic analyzer. You can see, CS is brrought low followed by eight clock pulses (500 kHz period) on SCK and 0x04 MSB first on the MOSI and with the DC set low. Afterwards, there is sequence of 4 dummy 0xFF bytes to push out the desired data out from the ILI9341 SPI buffer with the DC set high. But as you can see, there are only zeros on MISO line. Of course, the CS is brought up at the end. I"ve checked the wiring 10 times and I don"t think it is the problem. Maybe, are really all register accessible right after the start of the ILI9341? Or do I have to wirte some data somewhere first?
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