So far i have handmade shield, from UNO display to MEGA according to definition....... i want to test if will work,.....
after your reccomendation i wrote this definition:
#define LCD_RST A4
#define LCD_CS A3
#define LCD_RS A2
#define LCD_WR A1
#define LCD_RD A0
#define LCD_D0 22
#define LCD_D1 23
#define LCD_D2 24
#define LCD_D3 25
#define LCD_D4 26
#define LCD_D5 27
#define LCD_D6 28
#define LCD_D7 29
and put in to sketch "LCD_ID_readreg.ino" and finally i have answer from display :
reg(0x0000) 00 00 ID: ILI9320, ILI9325, ILI9335, ...
reg(0x0004) 00 FE FE FE Manufacturer ID
reg(0x0009) 09 09 09 09 09 Status Register
reg(0x000A) 00 00 Get Power Mode
reg(0x000C) 64 64 Get Pixel Format
reg(0x0061) 01 01 RDID1 HX8347-G
reg(0x0062) 00 00 RDID2 HX8347-G
reg(0x0063) 01 01 RDID3 HX8347-G
reg(0x0064) 00 00 RDID1 HX8347-A
reg(0x0065) 01 01 RDID2 HX8347-A
reg(0x0066) 00 00 RDID3 HX8347-A
reg(0x0067) 01 01 RDID Himax HX8347-A
reg(0x0070) 00 00 Panel Himax HX8347-A
reg(0x00A1) 01 01 01 01 01 RD_DDB SSD1963
reg(0x00B0) 00 00 RGB Interface Signal Control
reg(0x00B4) 02 02 Inversion Control
reg(0x00B6) 04 04 04 04 04 Display Control
reg(0x00B7) 05 05 Entry Mode Set
reg(0x00BF) 01 01 01 01 01 01 ILI9481, HX8357-B
reg(0x00C0) 80 26 00 00 00 00 00 00 80 Panel Control
reg(0x00C8) 00 00 00 00 00 00 00 00 00 00 00 00 00 GAMMA
reg(0x00CC) 00 00 Panel Control
reg(0x00D0) 00 00 FE Power Control
reg(0x00D2) 00 00 76 94 00 NVM Read
reg(0x00D3) 01 01 77 95 ILI9341, ILI9488
reg(0x00D4) 00 FE FE FE Novatek ID
reg(0x00DA) FE FE RDID1
reg(0x00DB) FF FF RDID2
reg(0x00DC) 04 36 RDID3
reg(0x00E0) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 GAMMA-P
reg(0x00E1) F1 03 07 0B 0D 0F 3D 77 4F 0F 17 17 23 23 01 01 GAMMA-N
reg(0x00EF) 01 01 01 00 00 01 ILI9327
reg(0x00F2) F8 E4 F0 00 00 00 00 00 00 00 00 00 Adjust Control 2
reg(0x00F6) 00 00 00 00 Interface Control
that is fine, but when I put the same definitions in to "graphictest_kbv.ino" - my screen is still gray, ...