WINCE6 boot progress bar

The general idea is to add a boot progress bar in NBoot or EBoot. Since WINCE startup mainly takes time to read NK, every time a certain page is read, a line of fixed height is drawn on the screen, and the position of the line is recorded. The line will be drawn next time until NK is finished reading, thus creating the effect of a progress bar.

Reference Mini2440 Nboot.

First define the color, position, length and width of the progress bar. The key codes are as follows:

1 #define PROGRESS_BAR_R 0x00

2 #define PROGRESS_BAR_G 0xFF

3 #define PROGRESS_BAR_B 0x00

4

5 //Set the position, length and width of the launch bar

6 #define PROGRESS_BAR_TOP 225

7 #define PROGRESS_BAR_LEFT 145

8 #define PROGRESS_BAR_WIDTH 512

9 #define PROGRESS_BAR_HEIGHT 20

10 #define PROGRESS_BAR_COLOR ( ( (PROGRESS_BAR_R >> 3) << 11) | ((PROGRESS_BAR_G >> 2) << 5) | (PROGRESS_BAR_B >> 3) )

11

Calculate the position of the line to be drawn before reading NK

1 unsigned char *LCDCurrentAddr;

2

3 LCDCurrentAddr = (unsigned char *)LCD_ADDR + PROGRESS_BAR_TOP * LCD_WIDTH * 2 + PROGRESS_BAR_LEFT * 2;// LCD_ADDR is the screen address

4

According to the NK length and the length of the strip, calculate how many pages are read and draw a line. The key code for drawing lines

1 unsigned short *p = (unsigned short *)LCDCurrentAddr;

2 for (y = 0; y < PROGRESS_BAR_HEIGHT; y++)

3 {

4 *p = PROGRESS_BAR_COLOR;

5 p += LCD_WIDTH;

6 }

7 LCDCurrentAddr += 2;

8