mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
synced 2025-05-03 22:17:07 +08:00
233 lines
6.8 KiB
C
233 lines
6.8 KiB
C
/**
|
|
******************************************************************************
|
|
* @file BSP/Src/ts_calibration.c
|
|
* @author MCD Application Team
|
|
* @brief This example code shows how to calibrate the touchscreen.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. Neither the name of STMicroelectronics nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "main.h"
|
|
|
|
/** @addtogroup STM32F4xx_HAL_Examples
|
|
* @{
|
|
*/
|
|
|
|
/** @addtogroup BSP
|
|
* @{
|
|
*/
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
/* Private variables ---------------------------------------------------------*/
|
|
static TS_StateTypeDef TS_State;
|
|
static uint8_t Calibration_Done = 0;
|
|
static int16_t A1, A2, B1, B2;
|
|
static int16_t aPhysX[2], aPhysY[2], aLogX[2], aLogY[2];
|
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
static void TouchscreenCalibration_SetHint(void);
|
|
static void GetPhysValues(int16_t LogX, int16_t LogY, int16_t * pPhysX, int16_t * pPhysY);
|
|
static void WaitForPressedState(uint8_t Pressed);
|
|
|
|
/* Private functions ---------------------------------------------------------*/
|
|
|
|
/**
|
|
* @brief Performs the TS calibration
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
void Touchscreen_Calibration(void)
|
|
{
|
|
uint8_t status = 0;
|
|
uint8_t i = 0;
|
|
|
|
TouchscreenCalibration_SetHint();
|
|
|
|
status = BSP_TS_Init(BSP_LCD_GetXSize(), BSP_LCD_GetYSize());
|
|
|
|
if (status != TS_OK)
|
|
{
|
|
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_RED);
|
|
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- 95, (uint8_t *)"ERROR", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- 80, (uint8_t *)"Touchscreen cannot be initialized", CENTER_MODE);
|
|
}
|
|
|
|
while (1)
|
|
{
|
|
if (status == TS_OK)
|
|
{
|
|
aLogX[0] = 15;
|
|
aLogY[0] = 15;
|
|
aLogX[1] = BSP_LCD_GetXSize() - 15;
|
|
aLogY[1] = BSP_LCD_GetYSize() - 15;
|
|
|
|
for (i = 0; i < 2; i++)
|
|
{
|
|
GetPhysValues(aLogX[i], aLogY[i], &aPhysX[i], &aPhysY[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];
|
|
|
|
Calibration_Done = 1;
|
|
return;
|
|
}
|
|
|
|
HAL_Delay(5);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Display calibration hint
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void TouchscreenCalibration_SetHint(void)
|
|
{
|
|
/* Clear the LCD */
|
|
BSP_LCD_Clear(LCD_COLOR_WHITE);
|
|
|
|
/* Set Touchscreen Demo description */
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
|
|
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
|
|
|
|
BSP_LCD_SetFont(&Font12);
|
|
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()/2 - 27, (uint8_t *)"Before using the Toucscreen", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()/2 - 12, (uint8_t *)"you need to calibrate it.", CENTER_MODE);
|
|
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()/2 + 3, (uint8_t *)"Press on the black circles", CENTER_MODE);
|
|
}
|
|
|
|
/**
|
|
* @brief Get Physical position
|
|
* @param LogX : logical X position
|
|
* @param LogY : logical Y position
|
|
* @param pPhysX : Physical X position
|
|
* @param pPhysY : Physical Y position
|
|
* @retval None
|
|
*/
|
|
static void GetPhysValues(int16_t LogX, int16_t LogY, int16_t * pPhysX, int16_t * pPhysY)
|
|
{
|
|
/* Draw the ring */
|
|
BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
|
|
BSP_LCD_FillCircle(LogX, LogY, 5);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
|
|
BSP_LCD_FillCircle(LogX, LogY, 2);
|
|
|
|
/* Wait until touch is pressed */
|
|
WaitForPressedState(1);
|
|
|
|
BSP_TS_GetState(&TS_State);
|
|
*pPhysX = TS_State.x;
|
|
*pPhysY = TS_State.y;
|
|
|
|
/* Wait until touch is released */
|
|
WaitForPressedState(0);
|
|
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
|
|
BSP_LCD_FillCircle(LogX, LogY, 5);
|
|
}
|
|
|
|
/**
|
|
* @brief Wait For Pressed State.
|
|
* @param None
|
|
* @retval None
|
|
*/
|
|
static void WaitForPressedState(uint8_t Pressed)
|
|
{
|
|
TS_StateTypeDef State;
|
|
|
|
do
|
|
{
|
|
BSP_TS_GetState(&State);
|
|
HAL_Delay(10);
|
|
if (State.TouchDetected == Pressed)
|
|
{
|
|
uint16_t TimeStart = HAL_GetTick();
|
|
do {
|
|
BSP_TS_GetState(&State);
|
|
HAL_Delay(10);
|
|
if (State.TouchDetected != Pressed)
|
|
{
|
|
break;
|
|
} else if ((HAL_GetTick() - 150) > TimeStart)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
while (1);
|
|
}
|
|
}
|
|
while (1);
|
|
}
|
|
|
|
/**
|
|
* @brief Calibrate X position
|
|
* @param x : X position
|
|
* @retval calibrated x
|
|
*/
|
|
uint16_t Calibration_GetX(uint16_t x)
|
|
{
|
|
return (((A1 * x) + B1)/1000);
|
|
}
|
|
|
|
/**
|
|
* @brief Calibrate Y position
|
|
* @param y: Y position
|
|
* @retval calibrated y
|
|
*/
|
|
uint16_t Calibration_GetY(uint16_t y)
|
|
{
|
|
return (((A2 * y) + B2)/1000);
|
|
}
|
|
|
|
/**
|
|
* @brief Check if the TS is calibrated
|
|
* @param None
|
|
* @retval calibration state (1 : calibrated / 0: no)
|
|
*/
|
|
uint8_t IsCalibrationDone(void)
|
|
{
|
|
return (Calibration_Done);
|
|
}
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|