/**********************************************************************                SEGGER MICROCONTROLLER SYSTEME GmbH                 **        Solutions for real time microcontroller applications        **                                                                    **                    emWin GSC sample code                           **                                                                    ***********************************************************************----------------------------------------------------------------------File        : MEMDEV_DrawGraph.cPurpose     : Example for drawing graphs----------------------------------------------------------------------*/#include "GUI.h"#include "LCD_ConfDefaults.h"#include <math.h>#include <stdlib.h>/*********************************************************************       defines**********************************************************************/#define YSIZE   (LCD_YSIZE - 100)#define DEG2RAD (3.1415926f / 180)#if LCD_BITSPERPIXEL == 1  #define COLOR_GRAPH0 GUI_WHITE  #define COLOR_GRAPH1 GUI_WHITE#else  #define COLOR_GRAPH0 GUI_GREEN  #define COLOR_GRAPH1 GUI_YELLOW#endif/*********************************************************************      structure containing information for drawing routine*/typedef struct {  I16 *aY;} PARAM;/*********************************************************************       static code**********************************************************************//*********************************************************************       _Draw    Draws the graph area*/static void _Draw(void * p) {  int i;  PARAM * pParam = (PARAM *)p;  GUI_SetBkColor(GUI_BLACK);  GUI_SetColor(GUI_DARKGRAY);  GUI_ClearRect(19, (LCD_YSIZE - 20) - YSIZE, (LCD_XSIZE - 2), (LCD_YSIZE - 21));  for (i = 0; i < (YSIZE / 2); i += 20) {    GUI_DrawHLine((LCD_YSIZE - 20) - (YSIZE / 2) + i, 19, (LCD_XSIZE - 2));    if (i) {      GUI_DrawHLine((LCD_YSIZE - 20) - (YSIZE / 2) - i, 19, (LCD_XSIZE - 2));    }  }  for (i = 40; i < (LCD_XSIZE - 20); i += 40) {    GUI_DrawVLine(18 + i, (LCD_YSIZE - 20) - YSIZE, (LCD_YSIZE - 21));  }  GUI_SetColor(COLOR_GRAPH0);  GUI_DrawGraph(pParam->aY, (LCD_XSIZE - 20), 19, (LCD_YSIZE - 20) - YSIZE);}/*********************************************************************       _Draw2*/static void _Draw2(void * p) {  PARAM * pParam = (PARAM *)p;  _Draw(p);  GUI_SetColor(COLOR_GRAPH1);  GUI_DrawGraph(pParam->aY+15, (LCD_XSIZE - 20), 19, (LCD_YSIZE - 20) - YSIZE);}/*********************************************************************       _Label  Labels the x & y-axis*/static void _Label(void) {  int x, y;  GUI_SetBkColor(GUI_RED);  GUI_Clear();  GUI_SetColor(GUI_WHITE);  GUI_SetFont(&GUI_Font24_ASCII);  GUI_DispStringHCenterAt("MEMDEV_DrawGraph - Sample", 160, 5);  GUI_SetPenSize(1);  GUI_ClearRect(0, (LCD_YSIZE - 21) - YSIZE, (LCD_XSIZE - 1), (LCD_YSIZE - 1));  GUI_DrawRect(18, (LCD_YSIZE - 21) - YSIZE, (LCD_XSIZE - 1), (LCD_YSIZE - 20));  GUI_SetFont(&GUI_Font6x8);  for (x = 0; x < (LCD_XSIZE - 20); x += 40) {    int xPos = x + 18;    GUI_DrawVLine(xPos, (LCD_YSIZE - 20), (LCD_YSIZE - 14));    GUI_DispDecAt(x / 40, xPos - 2, (LCD_YSIZE - 9), 1);  }  for (y = 0; y < YSIZE / 2; y += 20) {    int yPos = (LCD_YSIZE - 20) - YSIZE / 2 + y;    GUI_DrawHLine(yPos, 13, 18);    if (y) {      GUI_GotoXY(1, yPos - 4);      GUI_DispSDec(-y / 20, 2);      yPos = (LCD_YSIZE - 20) - YSIZE / 2 - y;      GUI_DrawHLine(yPos, 13, 18);      GUI_GotoXY(1, yPos - 4);      GUI_DispSDec(y / 20, 2);    } else {      GUI_DispCharAt('0', 7, yPos - 4);    }  }}/*********************************************************************       _GetRandomData*/static void _GetRandomData(I16 * paY, int Time, int n) {  int aDiff, i;  if (Time > 5000)    Time -= 5000;  if (Time > 2500)    Time = 5000 - Time;  Time /= 200;  aDiff = Time * Time + 1;  for (i = 0; i < n; i++) {    if (!i) {      paY[i] = rand() % YSIZE;    } else {      I16 yNew;      int yD = aDiff - (rand() % aDiff);      if (rand() & 1) {        yNew = paY[i-1] + yD;      } else {        yNew = paY[i-1] - yD;      }      if (yNew > YSIZE) {        yNew -= yD;      } else { if (yNew < 0)        yNew += yD;      }      paY[i] = yNew;    }  }}/*********************************************************************       _DemoRandomGraph*/static void _DemoRandomGraph(void) {  PARAM Param;  int tDiff, t0;  GUI_RECT Rect = {19, (LCD_YSIZE - 20) - YSIZE, (LCD_XSIZE - 2), (LCD_YSIZE - 21)};  GUI_HMEM hMem = GUI_ALLOC_AllocZero((LCD_XSIZE - 20) * sizeof(I16));  GUI_SetColor(GUI_WHITE);  GUI_SetBkColor(GUI_RED);  GUI_ClearRect(0, 55, LCD_XSIZE, 75);  GUI_SetFont(&GUI_FontComic18B_1);  GUI_DispStringAt("Random graph", 20, 55);  GUI_Lock();  Param.aY = GUI_ALLOC_h2p(hMem);  GUI_SetFont(&GUI_Font6x8);  t0 = GUI_GetTime();  while((tDiff = (GUI_GetTime() - t0)) < 10000) {    int t1, tDiff2;    _GetRandomData(Param.aY, tDiff, (LCD_XSIZE - 20));    t1 = GUI_GetTime();    GUI_MEMDEV_Draw(&Rect, _Draw, &Param, 0, 0);    tDiff2 = GUI_GetTime() - t1;    if (tDiff2 < 100) {      GUI_Delay(100 - tDiff2);    }  }  GUI_Unlock();  GUI_ALLOC_Free(hMem);}/*********************************************************************       _GetSineData*/static void _GetSineData(I16 * paY, int n) {  int i;  for (i = 0; i < n; i++) {    float s = sin(i * DEG2RAD * 4);    paY[i] = s * YSIZE / 2 + YSIZE / 2;  }}/*********************************************************************       _DemoSineWave*/static void _DemoSineWave(void) {  PARAM Param;  I16 * pStart;  int t0, Cnt = 0;  GUI_RECT Rect = {19, (LCD_YSIZE - 20) - YSIZE, (LCD_XSIZE - 2), (LCD_YSIZE - 21)};  GUI_HMEM hMem = GUI_ALLOC_AllocZero(405 * sizeof(I16));  GUI_SetColor(GUI_WHITE);  GUI_SetBkColor(GUI_RED);  GUI_ClearRect(0, 55, LCD_XSIZE, 75);  GUI_SetFont(&GUI_FontComic18B_1);  GUI_DispStringAt("Sine wave", 20, 55);  pStart = GUI_ALLOC_h2p(hMem);  _GetSineData(pStart, 405);  GUI_SetFont(&GUI_Font6x8);  t0 = GUI_GetTime();  while((GUI_GetTime() - t0) < 10000) {    int t1, tDiff2;    if (Cnt++ % 90) {      Param.aY++;    } else {      Param.aY = pStart;    }    t1 = GUI_GetTime();    GUI_MEMDEV_Draw(&Rect, _Draw2, &Param, 0, 0);    tDiff2 = GUI_GetTime() - t1;    if (tDiff2 < 100) {      GUI_Delay(100 - tDiff2);    }  }  GUI_ALLOC_Free(hMem);}/*********************************************************************       _DrawOrData*/static void _DrawOrData(GUI_COLOR Color, I16 * paY) {  GUI_SetColor(Color);  GUI_DrawGraph(paY, (LCD_XSIZE - 20), 19, (LCD_YSIZE - 20) - YSIZE);}/*********************************************************************       _DemoOrData*/static void _DemoOrData(void) {  int i;  PARAM Param;  GUI_RECT Rect = {19, (LCD_YSIZE - 20) - YSIZE, (LCD_XSIZE - 2), (LCD_YSIZE - 21)};  GUI_HMEM hMem = GUI_ALLOC_AllocZero(405 * sizeof(I16));  GUI_SetColor(GUI_WHITE);  GUI_SetBkColor(GUI_RED);  GUI_ClearRect(0, 55, LCD_XSIZE, 75);  GUI_SetFont(&GUI_FontComic18B_1);  GUI_DispStringAt("Several waves...", 20 ,55);  Param.aY = GUI_ALLOC_h2p(hMem);  _GetSineData(Param.aY, 405);  GUI_MEMDEV_Draw(&Rect, _Draw, &Param, 0, 0);  for (i = 0; (i < 90); i++) {    _DrawOrData(GUI_GREEN, ++Param.aY);    GUI_Delay(10);  }  GUI_ALLOC_Free(hMem);}/*********************************************************************       MainTask**       Demonstrates the use of a memory device**********************************************************************/void MainTask(void) {  GUI_Init();  _Label();  while(1) {    _DemoRandomGraph();    _DemoSineWave();    _DemoOrData();  }}