Viktor Zhezher
Library to control Silicon Labs SI570 10 MHZ TO 1.4 GHZ I2C PROGRAMMABLE XO/VCXO.
Fork of
SI570
by 
Gerrit Polder
Diff: BSP_F746NG/ft5336.c
- Revision:
- 1:1556bcaaf759
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BSP_F746NG/ft5336.c Sun Mar 27 06:55:59 2016 +0000
@@ -0,0 +1,626 @@
+/**
+ ******************************************************************************
+ * @file ft5336.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 25-June-2015
+ * @brief This file provides a set of functions needed to manage the FT5336
+ * touch screen 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 "ft5336.h"
+
+/** @addtogroup BSP
+ * @{
+ */
+
+/** @addtogroup Component
+ * @{
+ */
+
+/** @defgroup FT5336
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+
+/** @defgroup FT5336_Private_Types_Definitions
+ * @{
+ */
+
+/* Private define ------------------------------------------------------------*/
+
+/** @defgroup FT5336_Private_Defines
+ * @{
+ */
+
+/* Private macro -------------------------------------------------------------*/
+
+/** @defgroup FT5336_Private_Macros
+ * @{
+ */
+
+/* Private variables ---------------------------------------------------------*/
+
+/** @defgroup FT5336_Private_Variables
+ * @{
+ */
+
+/* Touch screen driver structure initialization */
+TS_DrvTypeDef ft5336_ts_drv =
+{
+ ft5336_Init,
+ ft5336_ReadID,
+ ft5336_Reset,
+
+ ft5336_TS_Start,
+ ft5336_TS_DetectTouch,
+ ft5336_TS_GetXY,
+
+ ft5336_TS_EnableIT,
+ ft5336_TS_ClearIT,
+ ft5336_TS_ITStatus,
+ ft5336_TS_DisableIT
+
+};
+
+/* Global ft5336 handle */
+static ft5336_handle_TypeDef ft5336_handle = { FT5336_I2C_NOT_INITIALIZED, 0, 0};
+
+/**
+ * @}
+ */
+
+/** @defgroup ft5336_Private_Function_Prototypes
+ * @{
+ */
+
+/* Private functions prototypes-----------------------------------------------*/
+
+/**
+ * @brief Return the status of I2C was initialized or not.
+ * @param None.
+ * @retval : I2C initialization status.
+ */
+static uint8_t ft5336_Get_I2C_InitializedStatus(void);
+
+/**
+ * @brief I2C initialize if needed.
+ * @param None.
+ * @retval : None.
+ */
+static void ft5336_I2C_InitializeIfRequired(void);
+
+/**
+ * @brief Basic static configuration of TouchScreen
+ * @param DeviceAddr: FT5336 Device address for communication on I2C Bus.
+ * @retval Status FT5336_STATUS_OK or FT5336_STATUS_NOT_OK.
+ */
+static uint32_t ft5336_TS_Configure(uint16_t DeviceAddr);
+
+/** @defgroup ft5336_Private_Functions
+ * @{
+ */
+
+/** @defgroup ft5336_Public_Function_Body
+ * @{
+ */
+
+/* Public functions bodies-----------------------------------------------*/
+
+
+/**
+ * @brief Initialize the ft5336 communication bus
+ * from MCU to FT5336 : ie I2C channel initialization (if required).
+ * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT5336).
+ * @retval None
+ */
+void ft5336_Init(uint16_t DeviceAddr)
+{
+ /* Wait at least 200ms after power up before accessing registers
+ * Trsi timing (Time of starting to report point after resetting) from FT5336GQQ datasheet */
+ TS_IO_Delay(200);
+
+ /* Initialize I2C link if needed */
+ ft5336_I2C_InitializeIfRequired();
+}
+
+/**
+ * @brief Software Reset the ft5336.
+ * @note : Not applicable to FT5336.
+ * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT5336).
+ * @retval None
+ */
+void ft5336_Reset(uint16_t DeviceAddr)
+{
+ /* Do nothing */
+ /* No software reset sequence available in FT5336 IC */
+}
+
+/**
+ * @brief Read the ft5336 device ID, pre initialize I2C in case of need to be
+ * able to read the FT5336 device ID, and verify this is a FT5336.
+ * @param DeviceAddr: I2C FT5336 Slave address.
+ * @retval The Device ID (two bytes).
+ */
+uint16_t ft5336_ReadID(uint16_t DeviceAddr)
+{
+ volatile uint8_t ucReadId = 0;
+ uint8_t nbReadAttempts = 0;
+ uint8_t bFoundDevice = 0; /* Device not found by default */
+
+ /* Initialize I2C link if needed */
+ ft5336_I2C_InitializeIfRequired();
+
+ /* At maximum 4 attempts to read ID : exit at first finding of the searched device ID */
+ for(nbReadAttempts = 0; ((nbReadAttempts < 3) && !(bFoundDevice)); nbReadAttempts++)
+ {
+ /* Read register FT5336_CHIP_ID_REG as DeviceID detection */
+ ucReadId = TS_IO_Read(DeviceAddr, FT5336_CHIP_ID_REG);
+
+ /* Found the searched device ID ? */
+ if(ucReadId == FT5336_ID_VALUE)
+ {
+ /* Set device as found */
+ bFoundDevice = 1;
+ }
+ }
+
+ /* Return the device ID value */
+ return (ucReadId);
+}
+
+/**
+ * @brief Configures the touch Screen IC device to start detecting touches
+ * @param DeviceAddr: Device address on communication Bus (I2C slave address).
+ * @retval None.
+ */
+void ft5336_TS_Start(uint16_t DeviceAddr)
+{
+ /* Minimum static configuration of FT5336 */
+ FT5336_ASSERT(ft5336_TS_Configure(DeviceAddr));
+
+ /* By default set FT5336 IC in Polling mode : no INT generation on FT5336 for new touch available */
+ /* Note TS_INT is active low */
+ ft5336_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 ft5336_TS_DetectTouch(uint16_t DeviceAddr)
+{
+ volatile uint8_t nbTouch = 0;
+
+ /* Read register FT5336_TD_STAT_REG to check number of touches detection */
+ nbTouch = TS_IO_Read(DeviceAddr, FT5336_TD_STAT_REG);
+ nbTouch &= FT5336_TD_STAT_MASK;
+
+ if(nbTouch > FT5336_MAX_DETECTABLE_TOUCH)
+ {
+ /* If invalid number of touch detected, set it to zero */
+ nbTouch = 0;
+ }
+
+ /* Update ft5336 driver internal global : current number of active touches */
+ ft5336_handle.currActiveTouchNb = nbTouch;
+
+ /* Reset current active touch index on which to work on */
+ ft5336_handle.currActiveTouchIdx = 0;
+
+ return(nbTouch);
+}
+
+/**
+ * @brief Get the touch screen X and Y positions values
+ * Manage multi touch thanks to touch Index global
+ * variable 'ft5336_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 ft5336_TS_GetXY(uint16_t DeviceAddr, uint16_t *X, uint16_t *Y)
+{
+ volatile uint8_t ucReadData = 0;
+ static uint16_t coord;
+ uint8_t regAddressXLow = 0;
+ uint8_t regAddressXHigh = 0;
+ uint8_t regAddressYLow = 0;
+ uint8_t regAddressYHigh = 0;
+
+ if(ft5336_handle.currActiveTouchIdx < ft5336_handle.currActiveTouchNb)
+ {
+ switch(ft5336_handle.currActiveTouchIdx)
+ {
+ case 0 :
+ regAddressXLow = FT5336_P1_XL_REG;
+ regAddressXHigh = FT5336_P1_XH_REG;
+ regAddressYLow = FT5336_P1_YL_REG;
+ regAddressYHigh = FT5336_P1_YH_REG;
+ break;
+
+ case 1 :
+ regAddressXLow = FT5336_P2_XL_REG;
+ regAddressXHigh = FT5336_P2_XH_REG;
+ regAddressYLow = FT5336_P2_YL_REG;
+ regAddressYHigh = FT5336_P2_YH_REG;
+ break;
+
+ case 2 :
+ regAddressXLow = FT5336_P3_XL_REG;
+ regAddressXHigh = FT5336_P3_XH_REG;
+ regAddressYLow = FT5336_P3_YL_REG;
+ regAddressYHigh = FT5336_P3_YH_REG;
+ break;
+
+ case 3 :
+ regAddressXLow = FT5336_P4_XL_REG;
+ regAddressXHigh = FT5336_P4_XH_REG;
+ regAddressYLow = FT5336_P4_YL_REG;
+ regAddressYHigh = FT5336_P4_YH_REG;
+ break;
+
+ case 4 :
+ regAddressXLow = FT5336_P5_XL_REG;
+ regAddressXHigh = FT5336_P5_XH_REG;
+ regAddressYLow = FT5336_P5_YL_REG;
+ regAddressYHigh = FT5336_P5_YH_REG;
+ break;
+
+ case 5 :
+ regAddressXLow = FT5336_P6_XL_REG;
+ regAddressXHigh = FT5336_P6_XH_REG;
+ regAddressYLow = FT5336_P6_YL_REG;
+ regAddressYHigh = FT5336_P6_YH_REG;
+ break;
+
+ case 6 :
+ regAddressXLow = FT5336_P7_XL_REG;
+ regAddressXHigh = FT5336_P7_XH_REG;
+ regAddressYLow = FT5336_P7_YL_REG;
+ regAddressYHigh = FT5336_P7_YH_REG;
+ break;
+
+ case 7 :
+ regAddressXLow = FT5336_P8_XL_REG;
+ regAddressXHigh = FT5336_P8_XH_REG;
+ regAddressYLow = FT5336_P8_YL_REG;
+ regAddressYHigh = FT5336_P8_YH_REG;
+ break;
+
+ case 8 :
+ regAddressXLow = FT5336_P9_XL_REG;
+ regAddressXHigh = FT5336_P9_XH_REG;
+ regAddressYLow = FT5336_P9_YL_REG;
+ regAddressYHigh = FT5336_P9_YH_REG;
+ break;
+
+ case 9 :
+ regAddressXLow = FT5336_P10_XL_REG;
+ regAddressXHigh = FT5336_P10_XH_REG;
+ regAddressYLow = FT5336_P10_YL_REG;
+ regAddressYHigh = FT5336_P10_YH_REG;
+ break;
+
+ default :
+ break;
+
+ } /* end switch(ft5336_handle.currActiveTouchIdx) */
+
+ /* Read low part of X position */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressXLow);
+ coord = (ucReadData & FT5336_TOUCH_POS_LSB_MASK) >> FT5336_TOUCH_POS_LSB_SHIFT;
+
+ /* Read high part of X position */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressXHigh);
+ coord |= ((ucReadData & FT5336_TOUCH_POS_MSB_MASK) >> FT5336_TOUCH_POS_MSB_SHIFT) << 8;
+
+ /* Send back ready X position to caller */
+ *X = coord;
+
+ /* Read low part of Y position */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressYLow);
+ coord = (ucReadData & FT5336_TOUCH_POS_LSB_MASK) >> FT5336_TOUCH_POS_LSB_SHIFT;
+
+ /* Read high part of Y position */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressYHigh);
+ coord |= ((ucReadData & FT5336_TOUCH_POS_MSB_MASK) >> FT5336_TOUCH_POS_MSB_SHIFT) << 8;
+
+ /* Send back ready Y position to caller */
+ *Y = coord;
+
+ ft5336_handle.currActiveTouchIdx++; /* next call will work on next touch */
+
+ } /* of if(ft5336_handle.currActiveTouchIdx < ft5336_handle.currActiveTouchNb) */
+}
+
+/**
+ * @brief Configure the FT5336 device to generate IT on given INT pin
+ * connected to MCU as EXTI.
+ * @param DeviceAddr: Device address on communication Bus (Slave I2C address of FT5336).
+ * @retval None
+ */
+void ft5336_TS_EnableIT(uint16_t DeviceAddr)
+{
+ uint8_t regValue = 0;
+ regValue = (FT5336_G_MODE_INTERRUPT_TRIGGER & (FT5336_G_MODE_INTERRUPT_MASK >> FT5336_G_MODE_INTERRUPT_SHIFT)) << FT5336_G_MODE_INTERRUPT_SHIFT;
+
+ /* Set interrupt trigger mode in FT5336_GMODE_REG */
+ TS_IO_Write(DeviceAddr, FT5336_GMODE_REG, regValue);
+}
+
+/**
+ * @brief Configure the FT5336 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 FT5336).
+ * @retval None
+ */
+void ft5336_TS_DisableIT(uint16_t DeviceAddr)
+{
+ uint8_t regValue = 0;
+ regValue = (FT5336_G_MODE_INTERRUPT_POLLING & (FT5336_G_MODE_INTERRUPT_MASK >> FT5336_G_MODE_INTERRUPT_SHIFT)) << FT5336_G_MODE_INTERRUPT_SHIFT;
+
+ /* Set interrupt polling mode in FT5336_GMODE_REG */
+ TS_IO_Write(DeviceAddr, FT5336_GMODE_REG, regValue);
+}
+
+/**
+ * @brief Get IT status from FT5336 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 FT5336.
+ * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT5336).
+ * @retval TS interrupts status : always return 0 here
+ */
+uint8_t ft5336_TS_ITStatus(uint16_t DeviceAddr)
+{
+ /* Always return 0 as feature not applicable to FT5336 */
+ return 0;
+}
+
+/**
+ * @brief Clear IT status in FT5336 interrupt status clear registers
+ * Should be called Following an EXTI coming to the MCU.
+ * @note : This feature is not applicable to FT5336.
+ * @param DeviceAddr: Device address on communication Bus (I2C slave address of FT5336).
+ * @retval None
+ */
+void ft5336_TS_ClearIT(uint16_t DeviceAddr)
+{
+ /* Nothing to be done here for FT5336 */
+}
+
+/**** 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 FT5336).
+ * @param pGestureId : Pointer to get last touch gesture Identification.
+ * @retval None.
+ */
+void ft5336_TS_GetGestureID(uint16_t DeviceAddr, uint32_t * pGestureId)
+{
+ volatile uint8_t ucReadData = 0;
+
+ ucReadData = TS_IO_Read(DeviceAddr, FT5336_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 FT5336).
+ * @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 ft5336_TS_GetTouchInfo(uint16_t DeviceAddr,
+ uint32_t touchIdx,
+ uint32_t * pWeight,
+ uint32_t * pArea,
+ uint32_t * pEvent)
+{
+ volatile uint8_t ucReadData = 0;
+ uint8_t regAddressXHigh = 0;
+ uint8_t regAddressPWeight = 0;
+ uint8_t regAddressPMisc = 0;
+
+ if(touchIdx < ft5336_handle.currActiveTouchNb)
+ {
+ switch(touchIdx)
+ {
+ case 0 :
+ regAddressXHigh = FT5336_P1_XH_REG;
+ regAddressPWeight = FT5336_P1_WEIGHT_REG;
+ regAddressPMisc = FT5336_P1_MISC_REG;
+ break;
+
+ case 1 :
+ regAddressXHigh = FT5336_P2_XH_REG;
+ regAddressPWeight = FT5336_P2_WEIGHT_REG;
+ regAddressPMisc = FT5336_P2_MISC_REG;
+ break;
+
+ case 2 :
+ regAddressXHigh = FT5336_P3_XH_REG;
+ regAddressPWeight = FT5336_P3_WEIGHT_REG;
+ regAddressPMisc = FT5336_P3_MISC_REG;
+ break;
+
+ case 3 :
+ regAddressXHigh = FT5336_P4_XH_REG;
+ regAddressPWeight = FT5336_P4_WEIGHT_REG;
+ regAddressPMisc = FT5336_P4_MISC_REG;
+ break;
+
+ case 4 :
+ regAddressXHigh = FT5336_P5_XH_REG;
+ regAddressPWeight = FT5336_P5_WEIGHT_REG;
+ regAddressPMisc = FT5336_P5_MISC_REG;
+ break;
+
+ case 5 :
+ regAddressXHigh = FT5336_P6_XH_REG;
+ regAddressPWeight = FT5336_P6_WEIGHT_REG;
+ regAddressPMisc = FT5336_P6_MISC_REG;
+ break;
+
+ case 6 :
+ regAddressXHigh = FT5336_P7_XH_REG;
+ regAddressPWeight = FT5336_P7_WEIGHT_REG;
+ regAddressPMisc = FT5336_P7_MISC_REG;
+ break;
+
+ case 7 :
+ regAddressXHigh = FT5336_P8_XH_REG;
+ regAddressPWeight = FT5336_P8_WEIGHT_REG;
+ regAddressPMisc = FT5336_P8_MISC_REG;
+ break;
+
+ case 8 :
+ regAddressXHigh = FT5336_P9_XH_REG;
+ regAddressPWeight = FT5336_P9_WEIGHT_REG;
+ regAddressPMisc = FT5336_P9_MISC_REG;
+ break;
+
+ case 9 :
+ regAddressXHigh = FT5336_P10_XH_REG;
+ regAddressPWeight = FT5336_P10_WEIGHT_REG;
+ regAddressPMisc = FT5336_P10_MISC_REG;
+ break;
+
+ default :
+ break;
+
+ } /* end switch(touchIdx) */
+
+ /* Read Event Id of touch index */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressXHigh);
+ * pEvent = (ucReadData & FT5336_TOUCH_EVT_FLAG_MASK) >> FT5336_TOUCH_EVT_FLAG_SHIFT;
+
+ /* Read weight of touch index */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressPWeight);
+ * pWeight = (ucReadData & FT5336_TOUCH_WEIGHT_MASK) >> FT5336_TOUCH_WEIGHT_SHIFT;
+
+ /* Read area of touch index */
+ ucReadData = TS_IO_Read(DeviceAddr, regAddressPMisc);
+ * pArea = (ucReadData & FT5336_TOUCH_AREA_MASK) >> FT5336_TOUCH_AREA_SHIFT;
+
+ } /* of if(touchIdx < ft5336_handle.currActiveTouchNb) */
+}
+
+#endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
+
+/** @defgroup ft5336_Static_Function_Body
+ * @{
+ */
+
+/* Static functions bodies-----------------------------------------------*/
+
+
+/**
+ * @brief Return the status of I2C was initialized or not.
+ * @param None.
+ * @retval : I2C initialization status.
+ */
+static uint8_t ft5336_Get_I2C_InitializedStatus(void)
+{
+ return(ft5336_handle.i2cInitialized);
+}
+
+/**
+ * @brief I2C initialize if needed.
+ * @param None.
+ * @retval : None.
+ */
+static void ft5336_I2C_InitializeIfRequired(void)
+{
+ if(ft5336_Get_I2C_InitializedStatus() == FT5336_I2C_NOT_INITIALIZED)
+ {
+ /* Initialize TS IO BUS layer (I2C) */
+ TS_IO_Init();
+
+ /* Set state to initialized */
+ ft5336_handle.i2cInitialized = FT5336_I2C_INITIALIZED;
+ }
+}
+
+/**
+ * @brief Basic static configuration of TouchScreen
+ * @param DeviceAddr: FT5336 Device address for communication on I2C Bus.
+ * @retval Status FT5336_STATUS_OK or FT5336_STATUS_NOT_OK.
+ */
+static uint32_t ft5336_TS_Configure(uint16_t DeviceAddr)
+{
+ uint32_t status = FT5336_STATUS_OK;
+
+ /* Nothing special to be done for FT5336 */
+
+ return(status);
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+