Hi all,
I'm using a S1D13700 with my 320x240 display with 1bpp without problems for weeks. Now, i'd like to increase the color depth to 2bpp (maximum color depth @ 320x240).
I experience some difficulties since grayscale mode is not develloped in the datasheet :
- [FX] should be set to 0b0111
- [C/R] is (PIXEL_WIDTH/8]*BPP = (320/8)*2 = 80
#define X_RES 320 #define Y_RES 240 #define SIZE_OF_SCREEN (X_RES/8)*Y_RES
const char SYSTEM_SET[] = {
0x40, // Command
0x30, // P1 Overlay compensation, contigous CGRAM
0x87, // P2 [FX]=8
0x00, // P3 [FY]=1 (graphic mode)
2*(X_RES>>3)-1, // P4 C/R
84, // P5 TC/R = (Fosc-Y_RES*Frr)/(9*Y_RES*Frr) Y_RES-1, // P6 L/F X_RES>>3, // P7 APL X_RES>>11}; // P8 APH };
// Useless in grayscale mode ? const char SCROLL[] = {
0x44, // Command
0x00, // P1 Layer 1 address
0x00, // P2 Y_RES, // P3 # line SIZE_OF_SCREEN, // P4 Layer 2 address SIZE_OF_SCREEN>>8, // P5 Y_RES, // P6 # line SIZE_OF_SCREEN7, // P8
0, // P9
0}; // P10
The left part of the screen is reproduced to the right !
What's wrong with my parameters ?