guys，I have a problem ,need ur help.
I use the 2.8' TFT displayer,its control IC is ILI9325
R20 R21 are the registers of GRAM Address set,R22 is the register of GRAM data writen.
I need to put a dot on the TFT displayer,but when i set the R20 and R21(x y coordinate) ,then write the color to R22 ，it doesn't work。
I thought this problem for a long time，but i haven't settled it .
can u give me some advices.
thx !
I use the 2.8' TFT displayer,its control IC is ILI9325
R20 R21 are the registers of GRAM Address set,R22 is the register of GRAM data writen.
I need to put a dot on the TFT displayer,but when i set the R20 and R21(x y coordinate) ,then write the color to R22 ，it doesn't work。
I thought this problem for a long time，but i haven't settled it .
can u give me some advices.
thx !
