Diff: Components/exc7200/exc7200.c

Revision:

1:e8fac4061a5b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Components/exc7200/exc7200.c	Mon Nov 02 23:35:17 2015 +0000
@@ -0,0 +1,242 @@
+/**
+  ******************************************************************************
+  * @file    exc7200.c
+  * @author  MCD Application Team
+  * @version V1.0.1
+  * @date    21-September-2015
+  * @brief   This file provides a set of functions needed to manage the EXC7200
+  *          Touch-screen controller.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 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 "exc7200.h"
+
+/** @addtogroup BSP
+  * @{
+  */
+
+/** @addtogroup Component
+  * @{
+  */ 
+  
+/** @defgroup EXC7200
+  * @{
+  */   
+  
+/* Private typedef -----------------------------------------------------------*/
+
+/** @defgroup EXC7200_Private_Types_Definitions
+  * @{
+  */ 
+ 
+/* Private define ------------------------------------------------------------*/
+
+/** @defgroup EXC7200_Private_Defines
+  * @{
+  */ 
+  
+/* Private macro -------------------------------------------------------------*/
+
+/** @defgroup EXC7200_Private_Macros
+  * @{
+  */ 
+  
+/* Private variables ---------------------------------------------------------*/
+
+/** @defgroup EXC7200_Private_Variables
+  * @{
+  */ 
+  
+/* Touch screen driver structure initialization */  
+TS_DrvTypeDef exc7200_ts_drv = 
+{
+  exc7200_Init,
+  exc7200_ReadID,
+  exc7200_Reset,
+  
+  exc7200_TS_Start,
+  exc7200_TS_DetectTouch,
+  exc7200_TS_GetXY,
+  
+  exc7200_TS_EnableIT,
+  exc7200_TS_ClearIT,
+  exc7200_TS_ITStatus,
+  exc7200_TS_DisableIT,
+};
+
+uint8_t aBufferTS[10];
+
+/**
+  * @}
+  */ 
+    
+/* Private function prototypes -----------------------------------------------*/
+
+/** @defgroup exc7200_Private_Function_Prototypes
+  * @{
+  */
+
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup exc7200_Private_Functions
+  * @{
+  */
+
+/**
+  * @brief  Initialize the exc7200 and configure the needed hardware resources
+  * @param  DeviceAddr: Device address on communication Bus.
+  * @retval None
+  */
+void exc7200_Init(uint16_t DeviceAddr)
+{
+  /* Initialize IO BUS layer */
+  IOE_Init(); 
+  
+}
+ 
+/**
+  * @brief  Reset the exc7200 by Software.
+  * @param  DeviceAddr: Device address on communication Bus.  
+  * @retval None
+  */
+void exc7200_Reset(uint16_t DeviceAddr)
+{
+
+}
+
+/**
+  * @brief  Read the exc7200 IO Expander device ID.
+  * @param  DeviceAddr: Device address on communication Bus.  
+  * @retval The Device ID (two bytes).
+  */
+uint16_t exc7200_ReadID(uint16_t DeviceAddr)
+{
+  return 0;
+}
+
+/**
+  * @brief  Configures the touch Screen Controller (Single point detection)
+  * @param  DeviceAddr: Device address on communication Bus.
+  * @retval None.
+  */
+void exc7200_TS_Start(uint16_t DeviceAddr)
+{
+}
+
+/**
+  * @brief  Return if there is touch detected or not.
+  * @param  DeviceAddr: Device address on communication Bus.
+  * @retval Touch detected state.
+  */
+uint8_t exc7200_TS_DetectTouch(uint16_t DeviceAddr)
+{
+  /* Read TS data : Send I2C Slave address + 1 Bit0=1 for:read */
+  IOE_ReadMultiple(DeviceAddr | 1, EXC7200_READ_CMD, aBufferTS, 10);  
+
+  /* check for first byte */
+  if (aBufferTS[1]==0x83)
+  {	
+    return 1;
+  }
+  
+  return 0;
+}
+
+/**
+  * @brief  Get the touch screen X and Y positions values
+  * @param  DeviceAddr: Device address on communication Bus.
+  * @param  X: Pointer to X position value
+  * @param  Y: Pointer to Y position value   
+  * @retval None.
+  */
+void exc7200_TS_GetXY(uint16_t DeviceAddr, uint16_t *X, uint16_t *Y)
+{
+  /* Calculate positions */
+  *X = (((aBufferTS[3]&0x00ff) << 4) | ((aBufferTS[2]&0x00f0) >> 4)) << 1;
+  *Y = (((aBufferTS[5]&0x00ff) << 4) | ((aBufferTS[4]&0x00f0) >> 4)) << 1;
+  
+  /* Dummy Read to deactivate read mode */
+  IOE_ReadMultiple(DeviceAddr, EXC7200_READ_CMD, aBufferTS, 10);    
+}
+
+/**
+  * @brief  Configure the selected source to generate a global interrupt or not
+  * @param  DeviceAddr: Device address on communication Bus.  
+  * @retval None
+  */
+void exc7200_TS_EnableIT(uint16_t DeviceAddr)
+{  
+}
+
+/**
+  * @brief  Configure the selected source to generate a global interrupt or not
+  * @param  DeviceAddr: Device address on communication Bus.    
+  * @retval None
+  */
+void exc7200_TS_DisableIT(uint16_t DeviceAddr)
+{
+}
+
+/**
+  * @brief  Configure the selected source to generate a global interrupt or not
+  * @param  DeviceAddr: Device address on communication Bus.    
+  * @retval TS interrupts status
+  */
+uint8_t exc7200_TS_ITStatus(uint16_t DeviceAddr)
+{
+  return 0;
+}
+
+/**
+  * @brief  Configure the selected source to generate a global interrupt or not
+  * @param  DeviceAddr: Device address on communication Bus.  
+  * @retval None
+  */
+void exc7200_TS_ClearIT(uint16_t DeviceAddr)
+{
+}
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */      
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/