trying Drivers/BSP/STM32F429I-Discovery

Drivers/BSP/STM32F429I-Discovery/stm32f429i_discovery_ts.c

@@ -0,0 +1,250 @@
+/**
+  ******************************************************************************
+  * @file    stm32f429i_discovery_ts.c
+  * @author  MCD Application Team
+  * @brief   This file provides a set of functions needed to manage Touch
+  *          screen available with STMPE811 IO Expander device mounted on
+  *          STM32F429I-Discovery Kit.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2017 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f429i_discovery_ts.h"
+#include "stm32f429i_discovery_io.h"
+
+/** @addtogroup BSP
+  * @{
+  */
+
+/** @addtogroup STM32F429I_DISCOVERY
+  * @{
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS STM32F429I DISCOVERY TS
+  * @{
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS_Private_Types_Definitions STM32F429I DISCOVERY TS Private Types Definitions
+  * @{
+  */
+/**
+  * @}
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS_Private_Defines STM32F429I DISCOVERY TS Private Defines
+  * @{
+  */
+/**
+  * @}
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS_Private_Macros STM32F429I DISCOVERY TS Private Macros
+  * @{
+  */
+/**
+  * @}
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS_Private_Variables STM32F429I DISCOVERY TS Private Variables
+  * @{
+  */
+static TS_DrvTypeDef     *TsDrv;
+static uint16_t          TsXBoundary, TsYBoundary;
+/**
+  * @}
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS_Private_Function_Prototypes STM32F429I DISCOVERY TS Private Function Prototypes
+  * @{
+  */
+/**
+  * @}
+  */
+
+/** @defgroup STM32F429I_DISCOVERY_TS_Private_Functions STM32F429I DISCOVERY TS Private Functions
+  * @{
+  */
+
+/**
+  * @brief  Initializes and configures the touch screen functionalities and
+  *         configures all necessary hardware resources (GPIOs, clocks..).
+  * @param  XSize: The maximum X size of the TS area on LCD
+  * @param  YSize: The maximum Y size of the TS area on LCD
+  * @retval TS_OK: if all initializations are OK. Other value if error.
+  */
+uint8_t BSP_TS_Init(uint16_t XSize, uint16_t YSize)
+{
+  uint8_t ret = TS_ERROR;
+
+  /* Initialize x and y positions boundaries */
+  TsXBoundary = XSize;
+  TsYBoundary = YSize;
+
+  /* Read ID and verify if the IO expander is ready */
+  if (stmpe811_ts_drv.ReadID(TS_I2C_ADDRESS) == STMPE811_ID)
+  {
+    /* Initialize the TS driver structure */
+    TsDrv = &stmpe811_ts_drv;
+
+    ret = TS_OK;
+  }
+
+  if (ret == TS_OK)
+  {
+    /* Initialize the LL TS Driver */
+    TsDrv->Init(TS_I2C_ADDRESS);
+    TsDrv->Start(TS_I2C_ADDRESS);
+  }
+
+  return ret;
+}
+
+/**
+  * @brief  Configures and enables the touch screen interrupts.
+  * @retval TS_OK: if ITconfig is OK. Other value if error.
+  */
+uint8_t BSP_TS_ITConfig(void)
+{
+  /* Enable the TS ITs */
+  TsDrv->EnableIT(TS_I2C_ADDRESS);
+
+  return TS_OK;
+}
+
+/**
+  * @brief  Gets the TS IT status.
+  * @retval Interrupt status.
+  */
+uint8_t BSP_TS_ITGetStatus(void)
+{
+  /* Return the TS IT status */
+  return (TsDrv->GetITStatus(TS_I2C_ADDRESS));
+}
+
+/**
+  * @brief  Returns status and positions of the touch screen.
+  * @param  TsState: Pointer to touch screen current state structure
+  */
+void BSP_TS_GetState(TS_StateTypeDef *TsState)
+{
+  static uint32_t _x = 0, _y = 0;
+  uint16_t xDiff, yDiff, x, y, xr, yr;
+
+  TsState->TouchDetected = TsDrv->DetectTouch(TS_I2C_ADDRESS);
+
+  if (TsState->TouchDetected)
+  {
+    TsDrv->GetXY(TS_I2C_ADDRESS, &x, &y);
+
+#if defined (USE_STM32F429I_DISCOVERY_REVD)
+    if (y > 3700)
+    {
+      y = 3700;
+    }
+    else if (y < 180)
+    {
+      y = 180;
+    }
+
+    /* Y value first correction */
+    y = 3700 - y;
+#else
+
+    /* Y value first correction */
+    y -= 360;
+
+#endif
+
+    /* Y value second correction */
+    yr = y / 11;
+
+    /* Return y position value */
+    if (yr <= 0)
+    {
+      yr = 0;
+    }
+    else if (yr > TsYBoundary)
+    {
+      yr = TsYBoundary - 1;
+    }
+    else
+    {}
+    y = yr;
+
+    /* X value first correction */
+    if (x <= 3000)
+    {
+      x = 3870 - x;
+    }
+    else
+    {
+      x = 3800 - x;
+    }
+
+    /* X value second correction */
+    xr = x / 15;
+
+    /* Return X position value */
+    if (xr <= 0)
+    {
+      xr = 0;
+    }
+    else if (xr > TsXBoundary)
+    {
+      xr = TsXBoundary - 1;
+    }
+    else
+    {}
+
+    x = xr;
+    xDiff = x > _x ? (x - _x): (_x - x);
+    yDiff = y > _y ? (y - _y) : (_y - y);
+
+    if (xDiff + yDiff > 5)
+    {
+      _x = x;
+      _y = y;
+    }
+
+    /* Update the X position */
+    TsState->X = _x;
+
+    /* Update the Y position */
+    TsState->Y = _y;
+  }
+}
+
+/**
+  * @brief  Clears all touch screen interrupts.
+  */
+void BSP_TS_ITClear(void)
+{
+  /* Clear TS IT pending bits */
+  TsDrv->ClearIT(TS_I2C_ADDRESS);
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */