/**
* @brief Returns status and positions of the touch screen.
* @param TS_State: Pointer to touch screen current state structure
* @retval TS_OK if all initializations are OK. Other value if error.
*/
uint8_t BSP_TS_GetState(TS_StateTypeDef *TS_State)
{
static uint32_t _x[TS_MAX_NB_TOUCH] = {0, 0};
static uint32_t _y[TS_MAX_NB_TOUCH] = {0, 0};
uint8_t ts_status = TS_OK;
uint16_t x[TS_MAX_NB_TOUCH];
uint16_t y[TS_MAX_NB_TOUCH];
uint16_t brute_x[TS_MAX_NB_TOUCH];
uint16_t brute_y[TS_MAX_NB_TOUCH];
uint16_t x_diff;
uint16_t y_diff;
uint32_t index;
#if (TS_MULTI_TOUCH_SUPPORTED == 1)
uint32_t weight = 0;
uint32_t area = 0;
uint32_t event = 0;
#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
/* Check and update the number of touches active detected */
TS_State->touchDetected = tsDriver->DetectTouch(I2cAddress);
if(TS_State->touchDetected)
{
for(index=0; index < TS_State->touchDetected; index++)
{
/* Get each touch coordinates */
tsDriver->GetXY(I2cAddress, &(brute_x[index]), &(brute_y[index]));
if(tsOrientation == TS_SWAP_NONE)
{
x[index] = brute_x[index];
y[index] = brute_y[index];
}
if(tsOrientation & TS_SWAP_X)
{
x[index] = 4096 - brute_x[index];
}
if(tsOrientation & TS_SWAP_Y)
{
y[index] = 4096 - brute_y[index];
}
if(tsOrientation & TS_SWAP_XY)
{
y[index] = brute_x[index];
x[index] = brute_y[index];
}
x_diff = x[index] > _x[index]? (x[index] - _x[index]): (_x[index] - x[index]);
y_diff = y[index] > _y[index]? (y[index] - _y[index]): (_y[index] - y[index]);
if ((x_diff + y_diff) > 5)
{
_x[index] = x[index];
_y[index] = y[index];
}
if(I2cAddress == FT5336_I2C_SLAVE_ADDRESS)
{
TS_State->touchX[index] = x[index];
TS_State->touchY[index] = y[index];
}
else
{
/* 2^12 = 4096 : indexes are expressed on a dynamic of 4096 */
TS_State->touchX[index] = (tsXBoundary * _x[index]) >> 12;
TS_State->touchY[index] = (tsYBoundary * _y[index]) >> 12;
}
#if (TS_MULTI_TOUCH_SUPPORTED == 1)
/* Get touch info related to the current touch */
ft5336_TS_GetTouchInfo(I2cAddress, index, &weight, &area, &event);
/* Update TS_State structure */
TS_State->touchWeight[index] = weight;
TS_State->touchArea[index] = area;
/* Remap touch event */
switch(event)
{
case FT5336_TOUCH_EVT_FLAG_PRESS_DOWN :
TS_State->touchEventId[index] = TOUCH_EVENT_PRESS_DOWN;
break;
case FT5336_TOUCH_EVT_FLAG_LIFT_UP :
TS_State->touchEventId[index] = TOUCH_EVENT_LIFT_UP;
break;
case FT5336_TOUCH_EVT_FLAG_CONTACT :
TS_State->touchEventId[index] = TOUCH_EVENT_CONTACT;
break;
case FT5336_TOUCH_EVT_FLAG_NO_EVENT :
TS_State->touchEventId[index] = TOUCH_EVENT_NO_EVT;
break;
default :
ts_status = TS_ERROR;
break;
} /* of switch(event) */
#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
} /* of for(index=0; index < TS_State->touchDetected; index++) */
#if (TS_MULTI_TOUCH_SUPPORTED == 1)
/* Get gesture Id */
ts_status = BSP_TS_Get_GestureId(TS_State);
#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
} /* end of if(TS_State->touchDetected != 0) */
return (ts_status);
}
/**
* @brief Returns status and positions of the touch screen.
* @param TS_State: Pointer to touch screen current state structure
* @retval TS_OK if all initializations are OK. Other value if error.
*/
uint8_t BSP_TS_GetState(TS_StateTypeDef *TS_State)
{
static uint32_t _x[TS_MAX_NB_TOUCH] = {0, 0};
static uint32_t _y[TS_MAX_NB_TOUCH] = {0, 0};
uint8_t ts_status = TS_OK;
uint16_t tmp;
uint16_t Raw_x[TS_MAX_NB_TOUCH];
uint16_t Raw_y[TS_MAX_NB_TOUCH];
uint16_t xDiff;
uint16_t yDiff;
uint32_t index;
#if (TS_MULTI_TOUCH_SUPPORTED == 1)
uint32_t weight = 0;
uint32_t area = 0;
uint32_t event = 0;
#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
/* Check and update the number of touches active detected */
TS_State->touchDetected = ts_driver->DetectTouch(I2C_Address);
if(TS_State->touchDetected)
{
for(index=0; index < TS_State->touchDetected; index++)
{
/* Get each touch coordinates */
ts_driver->GetXY(I2C_Address, &(Raw_x[index]), &(Raw_y[index]));
if(ts_orientation & TS_SWAP_XY)
{
tmp = Raw_x[index];
Raw_x[index] = Raw_y[index];
Raw_y[index] = tmp;
}
if(ts_orientation & TS_SWAP_X)
{
Raw_x[index] = FT_6206_MAX_WIDTH - 1 - Raw_x[index];
}
if(ts_orientation & TS_SWAP_Y)
{
Raw_y[index] = FT_6206_MAX_HEIGHT - 1 - Raw_y[index];
}
xDiff = Raw_x[index] > _x[index]? (Raw_x[index] - _x[index]): (_x[index] - Raw_x[index]);
yDiff = Raw_y[index] > _y[index]? (Raw_y[index] - _y[index]): (_y[index] - Raw_y[index]);
if ((xDiff + yDiff) > 5)
{
_x[index] = Raw_x[index];
_y[index] = Raw_y[index];
}
TS_State->touchX[index] = _x[index];
TS_State->touchY[index] = _y[index];
#if (TS_MULTI_TOUCH_SUPPORTED == 1)
/* Get touch info related to the current touch */
ft6x06_TS_GetTouchInfo(I2C_Address, index, &weight, &area, &event);
/* Update TS_State structure */
TS_State->touchWeight[index] = weight;
TS_State->touchArea[index] = area;
/* Remap touch event */
switch(event)
{
case FT6206_TOUCH_EVT_FLAG_PRESS_DOWN :
TS_State->touchEventId[index] = TOUCH_EVENT_PRESS_DOWN;
break;
case FT6206_TOUCH_EVT_FLAG_LIFT_UP :
TS_State->touchEventId[index] = TOUCH_EVENT_LIFT_UP;
break;
case FT6206_TOUCH_EVT_FLAG_CONTACT :
TS_State->touchEventId[index] = TOUCH_EVENT_CONTACT;
break;
case FT6206_TOUCH_EVT_FLAG_NO_EVENT :
TS_State->touchEventId[index] = TOUCH_EVENT_NO_EVT;
break;
default :
ts_status = TS_ERROR;
break;
} /* of switch(event) */
#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
} /* of for(index=0; index < TS_State->touchDetected; index++) */
#if (TS_MULTI_TOUCH_SUPPORTED == 1)
/* Get gesture Id */
ts_status = BSP_TS_Get_GestureId(TS_State);
#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
} /* end of if(TS_State->touchDetected != 0) */
return (ts_status);
}
/**
* @brief Touchscreen_Handle_NewTouch: factorization of touch management
* @param None
* @retval TS_OK or TS_ERROR
*/
static uint32_t Touchscreen_Handle_NewTouch(void)
{
#define TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS 15
#define TOUCH_INFO_STRING_SIZE 70
uint16_t x1 = 0;
uint16_t y1 = 0;
uint16_t x2 = 0;
uint16_t y2 = 0;
uint32_t drawTouch1 = 0; /* activate/deactivate draw of footprint of touch 1 */
uint32_t drawTouch2 = 0; /* activate/deactivate draw of footprint of touch 2 */
uint32_t colors[24] = {LCD_COLOR_BLUE, LCD_COLOR_GREEN, LCD_COLOR_RED, LCD_COLOR_CYAN, LCD_COLOR_MAGENTA, LCD_COLOR_YELLOW,
LCD_COLOR_LIGHTBLUE, LCD_COLOR_LIGHTGREEN, LCD_COLOR_LIGHTRED, LCD_COLOR_LIGHTCYAN, LCD_COLOR_LIGHTMAGENTA,
LCD_COLOR_LIGHTYELLOW, LCD_COLOR_DARKBLUE, LCD_COLOR_DARKGREEN, LCD_COLOR_DARKRED, LCD_COLOR_DARKCYAN,
LCD_COLOR_DARKMAGENTA, LCD_COLOR_DARKYELLOW, LCD_COLOR_LIGHTGRAY, LCD_COLOR_GRAY, LCD_COLOR_DARKGRAY,
LCD_COLOR_BLACK, LCD_COLOR_BROWN, LCD_COLOR_ORANGE };
uint32_t ts_status = TS_OK;
uint8_t lcd_string[TOUCH_INFO_STRING_SIZE] = "";
/* Check in polling mode in touch screen the touch status and coordinates */
/* of touches if touch occurred */
ts_status = BSP_TS_GetState(&TS_State);
if(TS_State.touchDetected)
{
/* One or dual touch have been detected */
/* Erase previous information on touchscreen play pad area */
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_FillRect(0, 80, BSP_LCD_GetXSize(), BSP_LCD_GetYSize() - 160);
/* Re-Draw touch screen play area on LCD */
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize() - 180);
BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize() - 182);
/* Erase previous information on bottom text bar */
BSP_LCD_FillRect(0, BSP_LCD_GetYSize() - 80, BSP_LCD_GetXSize(), 80);
/* Desactivate drawing footprint of touch 1 and touch 2 until validated against boundaries of touch pad values */
drawTouch1 = drawTouch2 = 0;
/* Get X and Y position of the first touch post calibrated */
x1 = TouchScreen_Get_Calibrated_X(TS_State.touchX[0]);
y1 = TouchScreen_Get_Calibrated_Y(TS_State.touchY[0]);
if((y1 > (90 + TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS)) &&
(y1 < (BSP_LCD_GetYSize() - 90 - TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS)))
{
drawTouch1 = 1;
}
/* If valid touch 1 position : inside the reserved area for the use case : draw the touch */
if(drawTouch1 == 1)
{
/* Draw circle of first touch : turn on colors[] table */
BSP_LCD_SetTextColor(colors[(touchscreen_color_idx++ % 24)]);
BSP_LCD_FillCircle(x1, y1, TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_SetFont(&Font16);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 70, (uint8_t *)"TOUCH INFO : ", CENTER_MODE);
BSP_LCD_SetFont(&Font12);
sprintf((char*)lcd_string, "x1 = %d, y1 = %d, Event = %s, Weight = %d",
x1,
y1,
ts_event_string_tab[TS_State.touchEventId[0]],
TS_State.touchWeight[0]);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 45, lcd_string, CENTER_MODE);
} /* of if(drawTouch1 == 1) */
if(TS_State.touchDetected > 1)
{
/* Get X and Y position of the second touch post calibrated */
x2 = TouchScreen_Get_Calibrated_X(TS_State.touchX[1]);
y2 = TouchScreen_Get_Calibrated_Y(TS_State.touchY[1]);
if((y2 > (90 + TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS)) &&
(y2 < (BSP_LCD_GetYSize() - 90 - TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS)))
{
drawTouch2 = 1;
}
/* If valid touch 2 position : inside the reserved area for the use case : draw the touch */
if(drawTouch2 == 1)
{
sprintf((char*)lcd_string, "x2 = %d, y2 = %d, Event = %s, Weight = %d",
x2,
y2,
ts_event_string_tab[TS_State.touchEventId[1]],
TS_State.touchWeight[1]);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 35, lcd_string, CENTER_MODE);
/* Draw circle of second touch : turn on color[] table */
BSP_LCD_SetTextColor(colors[(touchscreen_color_idx++ % 24)]);
BSP_LCD_FillCircle(x2, y2, TS_MULTITOUCH_FOOTPRINT_CIRCLE_RADIUS);
} /* of if(drawTouch2 == 1) */
} /* of if(TS_State.touchDetected > 1) */
if((drawTouch1 == 1) || (drawTouch2 == 1))
{
/* Get updated gesture Id in global variable 'TS_State' */
ts_status = BSP_TS_Get_GestureId(&TS_State);
sprintf((char*)lcd_string, "Gesture Id = %s", ts_gesture_id_string_tab[TS_State.gestureId]);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 15, lcd_string, CENTER_MODE);
}
else
{
/* Invalid touch position */
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 70, (uint8_t *)"Invalid touch position : use drawn touch area : ", CENTER_MODE);
}
} /* of if(TS_State.TouchDetected) */
return(ts_status);
}