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/* ... */
#include "k_calibration.h"
#include "k_rtc.h"
#include "GUI.h"
/* ... */
/* ... */
Includes
typedef union
{
struct
{
uint32_t A1 : 15;
uint32_t B1 : 16;
uint32_t Reserved : 1;
...}b;
uint32_t d32;
...}CALIBRATION_Data1Typedef;
typedef union
{
struct
{
uint32_t A2 : 15;
uint32_t B2 : 16;
uint32_t IsCalibrated : 1;
...}b;
uint32_t d32;
...}CALIBRATION_Data2Typedef;
Private typedef
uint32_t CALIBRATION_Done = 0;
static const char * _acPos[] = {
"(upper left position)",
"(lower right position)"
...};
int16_t A1, A2, B1, B2;
CALIBRATION_Data1Typedef data1;
CALIBRATION_Data2Typedef data2;
/* ... */
static void _WaitForPressedState(int Pressed) {
GUI_PID_STATE State;
do {
GUI_TOUCH_GetState(&State);
GUI_Delay(10);
if (State.Pressed == Pressed) {
int TimeStart = GUI_GetTime();
do {
GUI_TOUCH_GetState(&State);
GUI_Delay(10);
if (State.Pressed != Pressed) {
break;
}if (State.Pressed != Pressed) { ... } else if ((GUI_GetTime() - 150) > TimeStart) {
return;
}else if ((GUI_GetTime() - 150) > TimeStart) { ... }
...} while (1);
}if (State.Pressed == Pressed) { ... }
...} while (1);
}{ ... }
/* ... */
static void _DispStringCentered(const char * pString) {
GUI_RECT Rect;
Rect.x0 = Rect.y0 = 0;
Rect.x1 = LCD_GetXSize() - 1;
Rect.y1 = LCD_GetYSize() - 1;
GUI_DispStringInRect(pString, &Rect, GUI_TA_HCENTER | GUI_TA_VCENTER);
}{ ... }
/* ... */
static void _GetPhysValues(int LogX, int LogY, int * pPhysX, int * pPhysY, const char * pString) {
char acText[] = "Press here";
GUI_RECT Rect;
GUI_PID_STATE State;
int FontSizeY, Align;
FontSizeY = GUI_GetFontSizeY();
GUI_Clear();
GUI_SetColor(GUI_BLACK);
_DispStringCentered("Runtime calibration,\n"
"please touch the screen\n"
"at the center of the ring.");
Rect.y0 = LogY - FontSizeY;
Rect.y1 = LogY + FontSizeY;
if (LogX < LCD_GetXSize() / 2) {
Rect.x0 = LogX + 15;
Rect.x1 = LCD_GetXSize();
Align = GUI_TA_LEFT;
}if (LogX < LCD_GetXSize() / 2) { ... } else {
Rect.x0 = 0;
Rect.x1 = LogX - 15;
Align = GUI_TA_RIGHT;
}else { ... }
GUI_DispStringInRect(acText, &Rect, Align | GUI_TA_TOP);
GUI_DispStringInRect(pString, &Rect, Align | GUI_TA_BOTTOM);
GUI_FillCircle(LogX, LogY, 5);
GUI_SetColor(GUI_WHITE);
GUI_FillCircle(LogX, LogY, 2);
GUI_SetColor(GUI_BLACK);
_WaitForPressedState(1);
GUI_TOUCH_GetState(&State);
*pPhysX = State.x;
*pPhysY = State.y;
_WaitForPressedState(0);
}{ ... }
/* ... */
static void _Explain(void) {
_DispStringCentered("At first time, you need to\n"
"calibrate the Touch screen\n"
"Please press the touch\n"
"screen to continue...");
GUI_DispStringHCenterAt("Touch screen Calibration", LCD_GetXSize() / 2, 5);
_WaitForPressedState(1);
_WaitForPressedState(0);
}{ ... }
/* ... */
void k_CalibrationInit(void)
{
int aPhysX[2], aPhysY[2], aLogX[2], aLogY[2], i;
data1.d32 = k_BkupRestoreParameter(RTC_BKP_DR0);
data2.d32 = k_BkupRestoreParameter(RTC_BKP_DR1);
A2 = data2.b.A2;
B2 = data2.b.B2;
A1 = data1.b.A1;
B1 = data1.b.B1;
if(data2.b.IsCalibrated == 0)
{
GUI_SetBkColor(GUI_WHITE);
GUI_Clear();
GUI_SetColor(GUI_BLACK);
GUI_SetFont(&GUI_Font13B_ASCII);
_Explain();
aLogX[0] = 15;
aLogY[0] = 15;
aLogX[1] = LCD_GetXSize() - 15;
aLogY[1] = LCD_GetYSize() - 15;
for (i = 0; i < 2; i++) {
_GetPhysValues(aLogX[i], aLogY[i], &aPhysX[i], &aPhysY[i], _acPos[i]);
}for (i = 0; i < 2; i++) { ... }
A1 = (1000 * ( aLogX[1] - aLogX[0]))/ ( aPhysX[1] - aPhysX[0]);
B1 = (1000 * aLogX[0]) - A1 * aPhysX[0];
A2 = (1000 * ( aLogY[1] - aLogY[0]))/ ( aPhysY[1] - aPhysY[0]);
B2 = (1000 * aLogY[0]) - A2 * aPhysY[0];
data1.b.A1 = A1;
data1.b.B1 = B1;
k_BkupSaveParameter(RTC_BKP_DR0, data1.d32);
data2.b.A2 = A2;
data2.b.B2 = B2;
data2.b.IsCalibrated = 1;
k_BkupSaveParameter(RTC_BKP_DR1, data2.d32);
GUI_Clear();
_DispStringCentered("Touch screen has been\n"
"calibrated. Please use\n"
"the cursor to test\n"
"the calibration...");
}if (data2.b.IsCalibrated == 0) { ... }
CALIBRATION_Done = 1;
GUI_Delay(1000);
}{ ... }
uint8_t k_CalibrationIsDone(void)
{
return CALIBRATION_Done;
}{ ... }
uint16_t k_CalibrationGetX(uint16_t x)
{
return (((A1 * x) + B1)/1000);
}{ ... }
uint16_t k_CalibrationGetY(uint16_t y)
{
return (((A2 * y) + B2)/1000);
}{ ... }
/* ... */
/* ... */