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Diff: Components/ft6x06/ft6x06.c
- Revision:
- 2:123b894b49dd
- Parent:
- 1:9e4eb47092ed
diff -r 9e4eb47092ed -r 123b894b49dd Components/ft6x06/ft6x06.c
--- a/Components/ft6x06/ft6x06.c Mon May 30 11:09:05 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,516 +0,0 @@
-/**
- ******************************************************************************
- * @file ft6x06.c
- * @author MCD Application Team
- * @version V1.0.0
- * @date 03-August-2015
- * @brief This file provides a set of functions needed to manage the FT6X06
- * IO Expander devices.
- ******************************************************************************
- * @attention
- *
- * <h2><center>© 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 "ft6x06.h"
-
-/** @addtogroup BSP
- * @{
- */
-
-/** @addtogroup Component
- * @{
- */
-
-/** @defgroup FT6X06
- * @{
- */
-
-/* Private typedef -----------------------------------------------------------*/
-
-/** @defgroup FT6X06_Private_Defines FT6X06 Private Defines
- * @{
- */
-#define FT6x06_MAX_INSTANCE 2
-/**
- * @}
- */
-
-/* Private macro -------------------------------------------------------------*/
-
-/** @defgroup FT6X06_Private_Variables FT6X06 Private Variables
- * @{
- */
-
-/* Touch screen driver structure initialization */
-TS_DrvTypeDef ft6x06_ts_drv =
-{
- ft6x06_Init,
- ft6x06_ReadID,
- ft6x06_Reset,
-
- ft6x06_TS_Start,
- ft6x06_TS_DetectTouch,
- ft6x06_TS_GetXY,
-
- ft6x06_TS_EnableIT,
- ft6x06_TS_ClearIT,
- ft6x06_TS_ITStatus,
- ft6x06_TS_DisableIT
-
-};
-
-/* ft6x06 instances by address */
-uint8_t ft6x06[FT6x06_MAX_INSTANCE] = {0};
-
-/* Global ft6x06 handle */
-static ft6x06_handle_TypeDef ft6x06_handle = { FT6206_I2C_NOT_INITIALIZED, 0, 0};
-
-/**
- * @}
- */
-
-/** @defgroup ft6x06_Private_Function_Prototypes ft6x06 Private Function Prototypes
- * @{
- */
-static uint8_t ft6x06_GetInstance(uint16_t DeviceAddr);
-/* Private functions prototypes-----------------------------------------------*/
-#if (TS_AUTO_CALIBRATION_SUPPORTED == 1)
-/**
- * @brief Start TouchScreen calibration phase
- * @param DeviceAddr: FT6206 Device address for communication on I2C Bus.
- * @retval Status FT6206_STATUS_OK or FT6206_STATUS_NOT_OK.
- */
-static uint32_t ft6x06_TS_Calibration(uint16_t DeviceAddr);
-#endif /* TS_AUTO_CALIBRATION_SUPPORTED == 1 */
-
-/**
- * @brief Basic static configuration of TouchScreen
- * @param DeviceAddr: FT6206 Device address for communication on I2C Bus.
- * @retval Status FT6206_STATUS_OK or FT6206_STATUS_NOT_OK.
- */
-static uint32_t ft6x06_TS_Configure(uint16_t DeviceAddr);
-
-/**
- * @}
- */
-
-/** @defgroup ft6x06_Private_Functions ft6x06 Private Functions
- * @{
- */
-
-/**
- * @brief Initialize the ft6x06 communication bus
- * from MCU to FT6206 : ie I2C channel initialization (if required).
- * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT6206).
- * @retval None
- */
-void ft6x06_Init(uint16_t DeviceAddr)
-{
- uint8_t instance;
- uint8_t empty;
-
- /* Check if device instance already exists */
- instance = ft6x06_GetInstance(DeviceAddr);
-
- /* To prevent double initialization */
- if(instance == 0xFF)
- {
- /* Look for empty instance */
- empty = ft6x06_GetInstance(0);
-
- if(empty < FT6x06_MAX_INSTANCE)
- {
- /* Register the current device instance */
- ft6x06[empty] = DeviceAddr;
-
- /* Initialize IO BUS layer */
- TS_IO_Init();
- }
- }
-}
-
-/**
- * @brief Software Reset the ft6x06.
- * @note : Not applicable to FT6206.
- * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT6206).
- * @retval None
- */
-void ft6x06_Reset(uint16_t DeviceAddr)
-{
- /* Do nothing */
- /* No software reset sequence available in FT6206 IC */
-}
-
-/**
- * @brief Read the ft6x06 device ID, pre initialize I2C in case of need to be
- * able to read the FT6206 device ID, and verify this is a FT6206.
- * @param DeviceAddr: I2C FT6x06 Slave address.
- * @retval The Device ID (two bytes).
- */
-uint16_t ft6x06_ReadID(uint16_t DeviceAddr)
-{
- /* Initialize I2C link if needed */
- TS_IO_Init();
-
- /* Return the device ID value */
- return (TS_IO_Read(DeviceAddr, FT6206_CHIP_ID_REG));
-}
-
-/**
- * @brief Configures the touch Screen IC device to start detecting touches
- * It goes through an internal calibration process (Hw calibration sequence of
- * the touch screen).
- * @param DeviceAddr: Device address on communication Bus (I2C slave address).
- * @retval None.
- */
-void ft6x06_TS_Start(uint16_t DeviceAddr)
-{
-#if (TS_AUTO_CALIBRATION_SUPPORTED == 1)
- /* Hw Calibration sequence start : should be done once after each power up */
- /* This is called internal calibration of the touch screen */
- ft6x06_TS_Calibration(DeviceAddr);
-#endif
- /* Minimum static configuration of FT6206 */
- ft6x06_TS_Configure(DeviceAddr);
-
- /* By default set FT6206 IC in Polling mode : no INT generation on FT6206 for new touch available */
- /* Note TS_INT is active low */
- ft6x06_TS_DisableIT(DeviceAddr);
-}
-
-/**
- * @brief Return if there is touches detected or not.
- * Try to detect new touches and forget the old ones (reset internal global
- * variables).
- * @param DeviceAddr: Device address on communication Bus.
- * @retval : Number of active touches detected (can be 0, 1 or 2).
- */
-uint8_t ft6x06_TS_DetectTouch(uint16_t DeviceAddr)
-{
- volatile uint8_t nbTouch = 0;
-
- /* Read register FT6206_TD_STAT_REG to check number of touches detection */
- nbTouch = TS_IO_Read(DeviceAddr, FT6206_TD_STAT_REG);
- nbTouch &= FT6206_TD_STAT_MASK;
-
- if(nbTouch > FT6206_MAX_DETECTABLE_TOUCH)
- {
- /* If invalid number of touch detected, set it to zero */
- nbTouch = 0;
- }
-
- /* Update ft6x06 driver internal global : current number of active touches */
- ft6x06_handle.currActiveTouchNb = nbTouch;
-
- /* Reset current active touch index on which to work on */
- ft6x06_handle.currActiveTouchIdx = 0;
-
- return(nbTouch);
-}
-
-/**
- * @brief Get the touch screen X and Y positions values
- * Manage multi touch thanks to touch Index global
- * variable 'ft6x06_handle.currActiveTouchIdx'.
- * @param DeviceAddr: Device address on communication Bus.
- * @param X: Pointer to X position value
- * @param Y: Pointer to Y position value
- * @retval None.
- */
-void ft6x06_TS_GetXY(uint16_t DeviceAddr, uint16_t *X, uint16_t *Y)
-{
- uint8_t regAddress = 0;
- uint8_t dataxy[4];
-
- if(ft6x06_handle.currActiveTouchIdx < ft6x06_handle.currActiveTouchNb)
- {
- switch(ft6x06_handle.currActiveTouchIdx)
- {
- case 0 :
- regAddress = FT6206_P1_XH_REG;
- break;
- case 1 :
- regAddress = FT6206_P2_XH_REG;
- break;
-
- default :
- break;
- }
-
- /* Read X and Y positions */
- TS_IO_ReadMultiple(DeviceAddr, regAddress, dataxy, sizeof(dataxy));
-
- /* Send back ready X position to caller */
- *X = ((dataxy[0] & FT6206_MSB_MASK) << 8) | (dataxy[1] & FT6206_LSB_MASK);
-
- /* Send back ready Y position to caller */
- *Y = ((dataxy[2] & FT6206_MSB_MASK) << 8) | (dataxy[3] & FT6206_LSB_MASK);
-
- ft6x06_handle.currActiveTouchIdx++;
- }
-}
-
-/**
- * @brief Configure the FT6206 device to generate IT on given INT pin
- * connected to MCU as EXTI.
- * @param DeviceAddr: Device address on communication Bus (Slave I2C address of FT6206).
- * @retval None
- */
-void ft6x06_TS_EnableIT(uint16_t DeviceAddr)
-{
- uint8_t regValue = 0;
- regValue = (FT6206_G_MODE_INTERRUPT_TRIGGER & (FT6206_G_MODE_INTERRUPT_MASK >> FT6206_G_MODE_INTERRUPT_SHIFT)) << FT6206_G_MODE_INTERRUPT_SHIFT;
-
- /* Set interrupt trigger mode in FT6206_GMODE_REG */
- TS_IO_Write(DeviceAddr, FT6206_GMODE_REG, regValue);
-}
-
-/**
- * @brief Configure the FT6206 device to stop generating IT on the given INT pin
- * connected to MCU as EXTI.
- * @param DeviceAddr: Device address on communication Bus (Slave I2C address of FT6206).
- * @retval None
- */
-void ft6x06_TS_DisableIT(uint16_t DeviceAddr)
-{
- uint8_t regValue = 0;
- regValue = (FT6206_G_MODE_INTERRUPT_POLLING & (FT6206_G_MODE_INTERRUPT_MASK >> FT6206_G_MODE_INTERRUPT_SHIFT)) << FT6206_G_MODE_INTERRUPT_SHIFT;
-
- /* Set interrupt polling mode in FT6206_GMODE_REG */
- TS_IO_Write(DeviceAddr, FT6206_GMODE_REG, regValue);
-}
-
-/**
- * @brief Get IT status from FT6206 interrupt status registers
- * Should be called Following an EXTI coming to the MCU to know the detailed
- * reason of the interrupt.
- * @note : This feature is not applicable to FT6206.
- * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT6206).
- * @retval TS interrupts status : always return 0 here
- */
-uint8_t ft6x06_TS_ITStatus(uint16_t DeviceAddr)
-{
- /* Always return 0 as feature not applicable to FT6206 */
- return 0;
-}
-
-/**
- * @brief Clear IT status in FT6206 interrupt status clear registers
- * Should be called Following an EXTI coming to the MCU.
- * @note : This feature is not applicable to FT6206.
- * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT6206).
- * @retval None
- */
-void ft6x06_TS_ClearIT(uint16_t DeviceAddr)
-{
- /* Nothing to be done here for FT6206 */
-}
-
-/**** NEW FEATURES enabled when Multi-touch support is enabled ****/
-
-#if (TS_MULTI_TOUCH_SUPPORTED == 1)
-
-/**
- * @brief Get the last touch gesture identification (zoom, move up/down...).
- * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT6x06).
- * @param pGestureId : Pointer to get last touch gesture Identification.
- * @retval None.
- */
-void ft6x06_TS_GetGestureID(uint16_t DeviceAddr, uint32_t * pGestureId)
-{
- volatile uint8_t ucReadData = 0;
-
- ucReadData = TS_IO_Read(DeviceAddr, FT6206_GEST_ID_REG);
-
- * pGestureId = ucReadData;
-}
-
-/**
- * @brief Get the touch detailed informations on touch number 'touchIdx' (0..1)
- * This touch detailed information contains :
- * - weight that was applied to this touch
- * - sub-area of the touch in the touch panel
- * - event of linked to the touch (press down, lift up, ...)
- * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT6x06).
- * @param touchIdx : Passed index of the touch (0..1) on which we want to get the
- * detailed information.
- * @param pWeight : Pointer to to get the weight information of 'touchIdx'.
- * @param pArea : Pointer to to get the sub-area information of 'touchIdx'.
- * @param pEvent : Pointer to to get the event information of 'touchIdx'.
-
- * @retval None.
- */
-void ft6x06_TS_GetTouchInfo(uint16_t DeviceAddr,
- uint32_t touchIdx,
- uint32_t * pWeight,
- uint32_t * pArea,
- uint32_t * pEvent)
-{
- uint8_t regAddress = 0;
- uint8_t dataxy[3];
-
- if(touchIdx < ft6x06_handle.currActiveTouchNb)
- {
- switch(touchIdx)
- {
- case 0 :
- regAddress = FT6206_P1_WEIGHT_REG;
- break;
-
- case 1 :
- regAddress = FT6206_P2_WEIGHT_REG;
- break;
-
- default :
- break;
-
- } /* end switch(touchIdx) */
-
- /* Read weight, area and Event Id of touch index */
- TS_IO_ReadMultiple(DeviceAddr, regAddress, dataxy, sizeof(dataxy));
-
- /* Return weight of touch index */
- * pWeight = (dataxy[0] & FT6206_TOUCH_WEIGHT_MASK) >> FT6206_TOUCH_WEIGHT_SHIFT;
- /* Return area of touch index */
- * pArea = (dataxy[1] & FT6206_TOUCH_AREA_MASK) >> FT6206_TOUCH_AREA_SHIFT;
- /* Return Event Id of touch index */
- * pEvent = (dataxy[2] & FT6206_TOUCH_EVT_FLAG_MASK) >> FT6206_TOUCH_EVT_FLAG_SHIFT;
-
- } /* of if(touchIdx < ft6x06_handle.currActiveTouchNb) */
-}
-
-#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
-
-#if (TS_AUTO_CALIBRATION_SUPPORTED == 1)
-/**
- * @brief Start TouchScreen calibration phase
- * @param DeviceAddr: FT6206 Device address for communication on I2C Bus.
- * @retval Status FT6206_STATUS_OK or FT6206_STATUS_NOT_OK.
- */
-static uint32_t ft6x06_TS_Calibration(uint16_t DeviceAddr)
-{
- uint32_t nbAttempt = 0;
- volatile uint8_t ucReadData;
- volatile uint8_t regValue;
- uint32_t status = FT6206_STATUS_OK;
- uint8_t bEndCalibration = 0;
-
- /* >> Calibration sequence start */
-
- /* Switch FT6206 back to factory mode to calibrate */
- regValue = (FT6206_DEV_MODE_FACTORY & FT6206_DEV_MODE_MASK) << FT6206_DEV_MODE_SHIFT;
- TS_IO_Write(DeviceAddr, FT6206_DEV_MODE_REG, regValue); /* 0x40 */
-
- /* Read back the same register FT6206_DEV_MODE_REG */
- ucReadData = TS_IO_Read(DeviceAddr, FT6206_DEV_MODE_REG);
- TS_IO_Delay(300); /* Wait 300 ms */
-
- if(((ucReadData & (FT6206_DEV_MODE_MASK << FT6206_DEV_MODE_SHIFT)) >> FT6206_DEV_MODE_SHIFT) != FT6206_DEV_MODE_FACTORY )
- {
- /* Return error to caller */
- return(FT6206_STATUS_NOT_OK);
- }
-
- /* Start calibration command */
- TS_IO_Write(DeviceAddr, FT6206_TD_STAT_REG, 0x04);
- TS_IO_Delay(300); /* Wait 300 ms */
-
- /* 100 attempts to wait switch from factory mode (calibration) to working mode */
- for (nbAttempt=0; ((nbAttempt < 100) && (!bEndCalibration)) ; nbAttempt++)
- {
- ucReadData = TS_IO_Read(DeviceAddr, FT6206_DEV_MODE_REG);
- ucReadData = (ucReadData & (FT6206_DEV_MODE_MASK << FT6206_DEV_MODE_SHIFT)) >> FT6206_DEV_MODE_SHIFT;
- if(ucReadData == FT6206_DEV_MODE_WORKING)
- {
- /* Auto Switch to FT6206_DEV_MODE_WORKING : means calibration have ended */
- bEndCalibration = 1; /* exit for loop */
- }
-
- TS_IO_Delay(200); /* Wait 200 ms */
- }
-
- /* Calibration sequence end << */
-
- return(status);
-}
-#endif /* TS_AUTO_CALIBRATION_SUPPORTED == 1 */
-
-/**
- * @brief Basic static configuration of TouchScreen
- * @param DeviceAddr: FT6206 Device address for communication on I2C Bus.
- * @retval Status FT6206_STATUS_OK or FT6206_STATUS_NOT_OK.
- */
-static uint32_t ft6x06_TS_Configure(uint16_t DeviceAddr)
-{
- uint32_t status = FT6206_STATUS_OK;
-
- /* Nothing special to be done for FT6206 */
-
- return(status);
-}
-
-/**
- * @brief Check if the device instance of the selected address is already registered
- * and return its index
- * @param DeviceAddr: Device address on communication Bus.
- * @retval Index of the device instance if registered, 0xFF if not.
- */
-static uint8_t ft6x06_GetInstance(uint16_t DeviceAddr)
-{
- uint8_t idx = 0;
-
- /* Check all the registered instances */
- for(idx = 0; idx < FT6x06_MAX_INSTANCE ; idx ++)
- {
- if(ft6x06[idx] == DeviceAddr)
- {
- return idx;
- }
- }
-
- return 0xFF;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/