DSO Nano is open source based, customizing the user interface is much easier than you thought. By linking the new UI to default variables and constants, you can build a individual interface yourself.
Grid
The background of the DSO is grid , it help user to measure the waveform on the screen.Now the DSO have 8X10 grids, and each grid is 25X25 pixel. The entire grid is 300X200 pixels, here is where the screen display the waveform.
To make more space for display another information, you can modify the grid into smaller size, but it need to be the times of 50 pixel.
You can modify the grid in the FUNction.h . Just change the definition of the below you can move the grid to any position and change its size:
#define X_SIZE 250
#define Y_SIZE 200
#define MIN_X 3
#define MIN_Y 24
#define MAX_X (X_SIZE + MIN_X)
#define MAX_Y (Y_SIZE + MIN_Y)
Character
DSO has a font library in Lcd.c , just modify the font library you can change another typeface of character to display , and you can add more figure into the library to display , like ”→”.
//==================== font library ====================================
unsigned const short Char_Dot[760] =//744 12x6
0x0000,0x0000,0x0000,0x001C,0x0020,0x0040,/*" */
0x0040,0x0040,0x0020,0x001C,0x0000,0x0000,/*# */
0x0000,0x0000,0x0000,0xE000,0x1000,0x0800,/*$ */
0x60C0,0x9300,0x6D80,0x3240,0xC180,0x0000,/*% */
character string display function
You can find this function in the Lcd.c and use it you can show a string on the screen at any position and color.
/***********************************************************************
Display_Str: display the string in assigned position
Input: X,Y,Color,Displaymode,string
***********************************************************************/
void Display_Str(unsigned short x0, unsigned short y0, unsigned short Color, unsigned char Mode, unsigned const char *s)
{ ……….
while (*s!=0) {
unsigned const short *scanline=Char_Dot+((*s-0x22)*6);
for(i=0;i<6;++i){
……..
for(j=0;j<12;++j){
if(b&16) {
……….
if(*s==0x21) x0 +=3;
else x0 += 6;
……..
unsigned short x0：X coordinate （0~319）
unsigned short y0：Y coordinate，(0~239)
unsigned short Color：color （will be reference in next section）
unsigned char Mode：display mode （PRN：normal;INV Invert）
unsigned const char *s：String
Dot
You can use the two functions to drop a dot with any color in any position in the screen.
Point_SCR(x, y); // X coordinate （0~319）Y coordinate，(0~239)
Set_Pixel(color); //drop a color in the pixel set above
Menu
The entire button signal is put into the Key_Buffer. And you can read the key value to judge which key be pressed.
KEYCODE_PLAY
KEYCODE_LEFT
KEYCODE_RIGHT
KEYCODE_DOWN
KEYCODE_UP
KEYCODE_MANU
In the main.c , you can fine the code below. And modify the code here you can define a new menu for your DSO. The menu is made up by a loop.
[code]Switch(Item) {
case SYNC_MODE: //Menu name
if(Key_Buffer==KEYCODE_LEFT) Item=Y_VERNIER_2; //to forward menu
if(Key_Buffer==KEYCODE_RIGHT) Item=Y_SENSITIVITY //to next menu
if(Key_Buffer==KEYCODE_DOWN){ //the operation
if ……
if(Key_Buffer==KEYCODE_UP){ ……//the operation
…… }
break;
case Y_SENSITIVITY:
break;
} [/code]
In the Function.h you can fine the define for every menu, the operation function is in the Function.c. You can add the new menu to create new function for you DSO .
#define SYNC_MODE 0
#define Y_SENSITIVITY 1
#define X_SENSITIVITY 2
#define Y_POSITION 3
#define MEASUR_KIND 4
#define POWER_INFOMATION 5
#define TRIG_SENSITIVITY 6
#define TRIG_SLOPE 7
#define INPUT_ATTENUATOR 8
#define SAVE_WAVE_CURVE 9
#define LOAD_WAVE_CURVE 10
#define OUTPUT_FREQUENCY 11
#define X_VERNIER_2 12
#define X_VERNIER_1 13
#define X_POSITION 14
#define RUNNING_STATUS 15
#define DELTA_T 16
#define Y_VERNIER_2 17
#define Y_VERNIER_1 18
#define TRIG_LEVEL 19
#define VERNIERS 20
#define WINDOW_AREA 21
Color
In the Ldc.h you can fine the definition for every color, just modify the definition you can change the color, and you can add the color define here to make your interface more colorful.
[code]#define WHITE 0xFFFF //wite：B = F800, G = 07E0, R = 001F
#define PANEL 0xFFE0 //panel：B = F800, G = 07E0, R = 0000
#define RED 0x001F //red：B = 0000, G = 0000, R = 001F
#define GRN 0x07E0 //green：B = 0000, G = 07E0, R = 0000
#define YEL 0x07FF //yellow：B = 0000, G = 07E0, R = 001F
#define GRID 0x738E //gray：B = 7000, G = 0380, R = 000E
#define CURVE 0x0F8E // green：B = 0001, G = 0780, R = 000E
#define MODEL 0xC05E // purple：B = C000, G = 0040, R = 001E
#define LINE 0xE79F // white：B = E000, G = 0780, R = 001F
#define BLACK 0x0000 //black：B = 0000, G = 0000, R = 0000 [/code]
For example:
Point_SCR(2, 1);
Set_Pixel(YEL);
Will drop a yellow dot in the (2,1) pixel .
And modify the
#define GRID 0x07E0 //green
The grid will be change to green color.
Ok , now you can start working with your individual interface . Have fun!
(wasn’t logged…)
analyse the display code and you will find it out ^^ it’s easy , and do it yourself , you will get more fun.