doctek wrote:The SPI protocol is described on pages 125 to 127 of the HD66781 document. The instructions appear much earlier. I think the first one I'll try will be to read Register R0x0000. This should read back as 0x0781 - an ID. The value for the HD66790 may be different, but it should be consistent. If I can't read that reliably, then I don't think much else is going to work.
doctek wrote:There's also the little matter of the mode control bits. They don't seem to be available either, so how does one put the thing in SPI mode anyway?
Renesas Technology no longer sells or supports LCD controller/drivers. Please contact Renesas SP Drivers:
Renesas has spun off the LCD driver group to a new Company in partnership with Sharp and Power Chip. It is still in a state of flux and I am not going to be able to support you. I guess that's why there isn't any info.
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