📄 glcd_spi_stm32.c
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}
/* Set GRAM area -----------------------------------------------------------*/
wr_reg(0x50, 0x0000); /* Horizontal GRAM Start Address */
wr_reg(0x51, (HEIGHT-1)); /* Horizontal GRAM End Address */
wr_reg(0x52, 0x0000); /* Vertical GRAM Start Address */
wr_reg(0x53, (WIDTH-1)); /* Vertical GRAM End Address */
wr_reg(0x60, 0xA700); /* Gate Scan Line */
if (driverCode == 0x5408) /* LCD with touch */
wr_reg(0x60, 0xA700); /* Gate Scan Line */
if (driverCode == 0xC990) /* LCD without touch */
wr_reg(0x60, 0x2700); /* Gate Scan Line */
wr_reg(0x61, 0x0001); /* NDL,VLE, REV */
wr_reg(0x6A, 0x0000); /* Set scrolling line */
/* Partial Display Control -------------------------------------------------*/
wr_reg(0x80, 0x0000);
wr_reg(0x81, 0x0000);
wr_reg(0x82, 0x0000);
wr_reg(0x83, 0x0000);
wr_reg(0x84, 0x0000);
wr_reg(0x85, 0x0000);
/* Panel Control -----------------------------------------------------------*/
wr_reg(0x90, 0x0010);
wr_reg(0x92, 0x0000);
wr_reg(0x93, 0x0003);
wr_reg(0x95, 0x0110);
wr_reg(0x97, 0x0000);
wr_reg(0x98, 0x0000);
/* Set GRAM write direction
I/D=10 (Horizontal : increment, Vertical : increment)
AM=1 (address is updated in vertical writing direction) */
wr_reg(0x03, 0x1038);
wr_reg(0x07, 0x0137); /* 262K color and display ON */
}
/*******************************************************************************
* Set draw window region to whole screen *
* Parameter: *
* Return: *
*******************************************************************************/
void GLCD_WindowMax (void) {
wr_reg(0x50, 0); /* Horizontal GRAM Start Address */
wr_reg(0x51, HEIGHT-1); /* Horizontal GRAM End Address (-1) */
wr_reg(0x52, 0); /* Vertical GRAM Start Address */
wr_reg(0x53, WIDTH-1); /* Vertical GRAM End Address (-1) */
}
/*******************************************************************************
* Draw a pixel in foreground color *
* Parameter: x: horizontal position *
* y: vertical position *
* Return: *
*******************************************************************************/
void GLCD_PutPixel (unsigned int x, unsigned int y) {
wr_reg(0x20, y);
wr_reg(0x21, WIDTH-1-x);
wr_cmd(0x22);
wr_dat(TextColor);
}
/*******************************************************************************
* Set foreground color *
* Parameter: color: foreground color *
* Return: *
*******************************************************************************/
void GLCD_SetTextColor (unsigned short color) {
TextColor = color;
}
/*******************************************************************************
* Set background color *
* Parameter: color: background color *
* Return: *
*******************************************************************************/
void GLCD_SetBackColor (unsigned short color) {
BackColor = color;
}
/*******************************************************************************
* Clear display *
* Parameter: color: display clearing color *
* Return: *
*******************************************************************************/
void GLCD_Clear (unsigned short color) {
unsigned int i;
GLCD_WindowMax();
wr_reg(0x20, 0);
wr_reg(0x21, 0);
wr_cmd(0x22);
wr_dat_start();
for(i = 0; i < (WIDTH*HEIGHT); i++)
wr_dat_only(color);
wr_dat_stop();
}
/*******************************************************************************
* Draw character on given position *
* Parameter: x: horizontal position *
* y: vertical position *
* c: pointer to character bitmap *
* Return: *
*******************************************************************************/
void GLCD_DrawChar (unsigned int x, unsigned int y, unsigned short *c) {
int idx = 0, i, j;
x = WIDTH-x-CHAR_W;
wr_reg(0x50, y); /* Horizontal GRAM Start Address */
wr_reg(0x51, y+CHAR_H-1); /* Horizontal GRAM End Address (-1) */
wr_reg(0x52, x); /* Vertical GRAM Start Address */
wr_reg(0x53, x+CHAR_W-1); /* Vertical GRAM End Address (-1) */
wr_reg(0x20, y);
wr_reg(0x21, x);
wr_cmd(0x22);
wr_dat_start();
for (j = 0; j < CHAR_H; j++) {
for (i = CHAR_W-1; i >= 0; i--) {
if((c[idx] & (1 << i)) == 0x00) {
wr_dat_only(BackColor);
} else {
wr_dat_only(TextColor);
}
}
c++;
}
wr_dat_stop();
}
/*******************************************************************************
* Disply character on given line *
* Parameter: ln: line number *
* col: column number *
* c: ascii character *
* Return: *
*******************************************************************************/
void GLCD_DisplayChar (unsigned int ln, unsigned int col, unsigned char c) {
c -= 32;
GLCD_DrawChar(col * CHAR_W, ln * CHAR_H, &Font_24x16[c * CHAR_H]);
}
/*******************************************************************************
* Disply string on given line *
* Parameter: ln: line number *
* col: column number *
* s: pointer to string *
* Return: *
*******************************************************************************/
void GLCD_DisplayString (unsigned int ln, unsigned int col, unsigned char *s) {
GLCD_WindowMax();
while (*s) {
GLCD_DisplayChar(ln, col++, *s++);
}
}
/*******************************************************************************
* Clear given line *
* Parameter: ln: line number *
* Return: *
*******************************************************************************/
void GLCD_ClearLn (unsigned int ln) {
GLCD_WindowMax();
GLCD_DisplayString(ln, 0, " ");
}
/*******************************************************************************
* Draw bargraph *
* Parameter: x: horizontal position *
* y: vertical position *
* w: maximum width of bargraph (in pixels) *
* val: value of active bargraph (in 1/1024) *
* Return: *
*******************************************************************************/
void GLCD_Bargraph (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned int val) {
int i,j;
x = WIDTH-x-w;
wr_reg(0x50, y); /* Horizontal GRAM Start Address */
wr_reg(0x51, y+CHAR_H-1); /* Horizontal GRAM End Address (-1) */
wr_reg(0x52, x); /* Vertical GRAM Start Address */
wr_reg(0x53, x+w-1); /* Vertical GRAM End Address (-1) */
val = (val * w) >> 10; /* Scale value for 24x12 characters */
wr_reg(0x20, y);
wr_reg(0x21, x);
wr_cmd(0x22);
wr_dat_start();
for (i = 0; i < h; i++) {
for (j = w-1; j >= 0; j--) {
if(j >= val) {
wr_dat_only(BackColor);
} else {
wr_dat_only(TextColor);
}
}
}
wr_dat_stop();
}
/*******************************************************************************
* Display graphical bitmap image at position x horizontally and y vertically *
* (This function is optimized for 16 bits per pixel format, it has to be *
* adapted for any other bits per pixel format) *
* Parameter: x: horizontal position *
* y: vertical position *
* w: width of bitmap *
* h: height of bitmap *
* bitmap: address at which the bitmap data resides *
* Return: *
*******************************************************************************/
void GLCD_Bitmap (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *bitmap) {
unsigned int i, j;
unsigned short *bitmap_ptr = (unsigned short *)bitmap;
x = WIDTH-x-w;
wr_reg(0x50, y); /* Horizontal GRAM Start Address */
wr_reg(0x51, y+h-1); /* Horizontal GRAM End Address (-1) */
wr_reg(0x52, x); /* Vertical GRAM Start Address */
wr_reg(0x53, x+w-1); /* Vertical GRAM End Address (-1) */
wr_reg(0x20, y);
wr_reg(0x21, x);
wr_cmd(0x22);
wr_dat_start();
for (j = 0; j < h; j++) {
bitmap_ptr += w-1;
for (i = 0; i < w; i++) {
wr_dat_only(*bitmap_ptr--);
}
bitmap_ptr += w+1;
}
wr_dat_stop();
}
/*******************************************************************************
* Display graphical bmp file image at position x horizontally and y vertically *
* (This function is optimized for 16 bits per pixel format, it has to be *
* adapted for any other bits per pixel format) *
* Parameter: x: horizontal position *
* y: vertical position *
* w: width of bitmap *
* h: height of bitmap *
* bmp: address at which the bmp data resides *
* Return: *
*******************************************************************************/
void GLCD_Bmp (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *bmp) {
unsigned int i, j;
unsigned short *bitmap_ptr = (unsigned short *)bmp;
x = WIDTH-x-w;
wr_reg(0x50, y); /* Horizontal GRAM Start Address */
wr_reg(0x51, y+h-1); /* Horizontal GRAM End Address (-1) */
wr_reg(0x52, x); /* Vertical GRAM Start Address */
wr_reg(0x53, x+w-1); /* Vertical GRAM End Address (-1) */
wr_reg(0x20, y);
wr_reg(0x21, x);
wr_cmd(0x22);
wr_dat_start();
bitmap_ptr += (h*w)-1;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
wr_dat_only(*bitmap_ptr--);
}
}
wr_dat_stop();
}
/******************************************************************************/
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