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Use names for st7781 registers.

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This commit is contained in:
Serge Vakulenko
2015-10-11 14:08:05 -07:00
parent 8d820f763f
commit 401d36eee7
1 changed files with 106 additions and 52 deletions
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158
sys/pic32/st7781.c
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@@ -97,6 +97,60 @@ static int _chip_id;
#define RS_DATA() LAT_SET(LCD_RS_PORT) = 1<<LCD_RS_PIN
#define RS_COMMAND() LAT_CLR(LCD_RS_PORT) = 1<<LCD_RS_PIN
/*
* ST7781 registers.
*/
#define ST7781_Driver_ID_Code_Read 0x00
#define ST7781_Driver_Output_Control 0x01
#define ST7781_LCD_Driving_Wave_Control 0x02
#define ST7781_Entry_Mode 0x03
#define ST7781_Resize_Control 0x04
#define ST7781_Display_Control_1 0x07
#define ST7781_Display_control_2 0x08
#define ST7781_Display_Control_3 0x09
#define ST7781_Display_Control_4 0x0A
#define ST7781_Frame_Marker_Position 0x0D
#define ST7781_Power_Control_1 0x10
#define ST7781_Power_Control_2 0x11
#define ST7781_Power_Control_3 0x12
#define ST7781_Power_Control_4 0x13
#define ST7781_DRAM_Horizontal_Address_Set 0x20
#define ST7781_DRAM_Vertical_Address_Set 0x21
#define ST7781_Write_Data_to_DRAM 0x22
#define ST7781_Read_Data_from_DRAM 0x22
#define ST7781_VCOMH_Control 0x29
#define ST7781_Frame_Rate_and_Color_Control 0x2B
#define ST7781_Gamma_Control_1 0x30
#define ST7781_Gamma_Control_2 0x31
#define ST7781_Gamma_Control_3 0x32
#define ST7781_Gamma_Control_4 0x35
#define ST7781_Gamma_Control_5 0x36
#define ST7781_Gamma_Control_6 0x37
#define ST7781_Gamma_Control_7 0x38
#define ST7781_Gamma_Control_8 0x39
#define ST7781_Gamma_Control_9 0x3C
#define ST7781_Gamma_Control_10 0x3D
#define ST7781_Horizontal_Address_Start_Position 0x50
#define ST7781_Horizontal_Address_End_Position 0x51
#define ST7781_Vertical_Address_Start_Position 0x52
#define ST7781_Vertical_Address_End_Position 0x53
#define ST7781_Gate_Scan_Control_1 0x60
#define ST7781_Gate_Scan_Control_2 0x61
#define ST7781_Partial_Image_1_Display_Position 0x80
#define ST7781_Partial_Image_1_Start_Address 0x81
#define ST7781_Partial_Image_1_End_Address 0x82
#define ST7781_Partial_Image_2_Display_Position 0x83
#define ST7781_Partial_Image_2_Start_Address 0x84
#define ST7781_Partial_Image_2_End_Address 0x85
#define ST7781_Panel_Interface_Control_1 0x90
#define ST7781_Panel_Interface_Control_2 0x92
#define ST7781_EEPROM_ID_Code 0xD2
#define ST7781_EEPROM_Control_Status 0xD9
#define ST7781_EEPROM_Wite_Command 0xDF
#define ST7781_EEPROM_Enable 0xFA
#define ST7781_EEPROM_VCOM_Offset 0xFE
#define ST7781_FAh_FEh_Enable 0xFF
/*
* Set direction of data bus as output.
*/
@@ -215,9 +269,9 @@ static unsigned readDeviceId()
CS_ACTIVE();
RS_COMMAND();
writeByte(0x00);
writeByte(ST7781_Driver_ID_Code_Read);
delay100ns();
WR_STROBE(); // Repeat prior byte (0x00)
WR_STROBE(); // Repeat prior byte
setReadDir(); // Switch data bus as input
RS_DATA();
value = readByte() << 8;
@@ -277,53 +331,53 @@ static int initDisplay()
/* Initialization of LCD controller. */
CS_ACTIVE();
writeReg(0x01, 0x0100);
writeReg(0x02, 0x0700);
writeReg(0x03, 0x1030);
writeReg(0x08, 0x0302);
writeReg(0x09, 0x0000);
writeReg(0x0A, 0x0008);
writeReg(ST7781_Driver_Output_Control, 0x0100);
writeReg(ST7781_LCD_Driving_Wave_Control, 0x0700);
writeReg(ST7781_Entry_Mode, 0x1030);
writeReg(ST7781_Display_control_2, 0x0302);
writeReg(ST7781_Display_Control_3, 0x0000);
writeReg(ST7781_Display_Control_4, 0x0008);
/* Power control registers. */
writeReg(0x10, 0x0790);
writeReg(0x11, 0x0005);
writeReg(0x12, 0x0000);
writeReg(0x13, 0x0000);
writeReg(ST7781_Power_Control_1, 0x0790);
writeReg(ST7781_Power_Control_2, 0x0005);
writeReg(ST7781_Power_Control_3, 0x0000);
writeReg(ST7781_Power_Control_4, 0x0000);
/* Power supply startup 1 settings. */
writeReg(0x10, 0x12B0);
writeReg(0x11, 0x0007);
writeReg(ST7781_Power_Control_1, 0x12B0);
writeReg(ST7781_Power_Control_2, 0x0007);
/* Power supply startup 2 settings. */
writeReg(0x12, 0x008C);
writeReg(0x13, 0x1700);
writeReg(0x29, 0x0022);
writeReg(ST7781_Power_Control_3, 0x008C);
writeReg(ST7781_Power_Control_4, 0x1700);
writeReg(ST7781_VCOMH_Control, 0x0022);
/* Gamma cluster settings. */
writeReg(0x30, 0x0000);
writeReg(0x31, 0x0505);
writeReg(0x32, 0x0205);
writeReg(0x35, 0x0206);
writeReg(0x36, 0x0408);
writeReg(0x37, 0x0000);
writeReg(0x38, 0x0504);
writeReg(0x39, 0x0206);
writeReg(0x3C, 0x0206);
writeReg(0x3D, 0x0408);
writeReg(ST7781_Gamma_Control_1, 0x0000);
writeReg(ST7781_Gamma_Control_2, 0x0505);
writeReg(ST7781_Gamma_Control_3, 0x0205);
writeReg(ST7781_Gamma_Control_4, 0x0206);
writeReg(ST7781_Gamma_Control_5, 0x0408);
writeReg(ST7781_Gamma_Control_6, 0x0000);
writeReg(ST7781_Gamma_Control_7, 0x0504);
writeReg(ST7781_Gamma_Control_8, 0x0206);
writeReg(ST7781_Gamma_Control_9, 0x0206);
writeReg(ST7781_Gamma_Control_10, 0x0408);
/* Display window 240*320. */
writeReg(0x50, 0x0000);
writeReg(0x51, 0x00EF);
writeReg(0x52, 0x0000);
writeReg(0x53, 0x013F);
writeReg(ST7781_Horizontal_Address_Start_Position, 0x0000);
writeReg(ST7781_Horizontal_Address_End_Position, 0x00EF);
writeReg(ST7781_Vertical_Address_Start_Position, 0x0000);
writeReg(ST7781_Vertical_Address_End_Position, 0x013F);
/* Frame rate settings. */
writeReg(0x60, 0xA700);
writeReg(0x61, 0x0001);
writeReg(0x90, 0x0033); // RTNI setting
writeReg(ST7781_Gate_Scan_Control_1, 0xA700);
writeReg(ST7781_Gate_Scan_Control_2, 0x0001);
writeReg(ST7781_Panel_Interface_Control_1, 0x0033); // RTNI setting
/* Display on. */
writeReg(0x07, 0x0133);
writeReg(ST7781_Display_Control_1, 0x0133);
return 0;
}
@@ -331,14 +385,14 @@ static void setAddrWindow(int x0, int y0, int x1, int y1)
{
/* Set address window. */
CS_ACTIVE();
writeReg(0x50, x0);
writeReg(0x51, x1);
writeReg(0x52, y0);
writeReg(0x53, y1);
writeReg(ST7781_Horizontal_Address_Start_Position, x0);
writeReg(ST7781_Horizontal_Address_End_Position, x1);
writeReg(ST7781_Vertical_Address_Start_Position, y0);
writeReg(ST7781_Vertical_Address_End_Position, y1);
/* Set address counter to top left. */
writeReg(0x20, x0);
writeReg(0x21, y0);
writeReg(ST7781_DRAM_Horizontal_Address_Set, x0);
writeReg(ST7781_DRAM_Vertical_Address_Set, y0);
CS_IDLE();
}
@@ -350,9 +404,9 @@ static void setPixel(int x, int y, int color)
if (x < 0 || x >= WIDTH || y < 0 || y >= HEIGHT)
return;
CS_ACTIVE();
writeReg(0x20, x);
writeReg(0x21, y);
writeReg(0x22, color);
writeReg(ST7781_DRAM_Horizontal_Address_Set, x);
writeReg(ST7781_DRAM_Vertical_Address_Set, y);
writeReg(ST7781_Write_Data_to_DRAM, color);
CS_IDLE();
}
@@ -370,8 +424,8 @@ static void flood(int color, int npixels)
CS_ACTIVE();
RS_COMMAND();
writeByte(0x00); // High byte of GRAM register...
writeByte(0x22); // Write data to GRAM
writeByte(0x00); /* High address byte */
writeByte(ST7781_Write_Data_to_DRAM);
/* Write first pixel normally, decrement counter by 1. */
RS_DATA();
@@ -460,8 +514,8 @@ static void drawImage(int x, int y, int width, int height,
setAddrWindow(x, y, x + width - 1, y + height - 1);
CS_ACTIVE();
RS_COMMAND();
writeByte(0x00);
writeByte(0x22);
writeByte(0x00); /* High address byte */
writeByte(ST7781_Write_Data_to_DRAM);
RS_DATA();
while (cnt--) {
color = *data++;
@@ -599,8 +653,8 @@ static void drawGlyph(const struct gpanel_font_t *font,
setAddrWindow(_col, _row, _col + width - 1, _row + font->height - 1);
CS_ACTIVE();
RS_COMMAND();
writeByte(0x00);
writeByte(0x22);
writeByte(0x00); /* High address byte */
writeByte(ST7781_Write_Data_to_DRAM);
RS_DATA();
/* Loop on each glyph row. */
@@ -742,8 +796,8 @@ int gpanel_ioctl(dev_t dev, register u_int cmd, caddr_t addr, int flag)
struct gpanel_clear_t *param = (struct gpanel_clear_t*) addr;
CS_ACTIVE();
writeReg(0x20, 0);
writeReg(0x21, 0);
writeReg(ST7781_DRAM_Horizontal_Address_Set, 0);
writeReg(ST7781_DRAM_Vertical_Address_Set, 0);
flood(param->color, WIDTH * HEIGHT);
param->xsize = WIDTH;
param->ysize = HEIGHT;