ST / BSP_DISCO_L496AG

BSP driver for DISCO_L496AG

Dependents:   DISCO_L496AG-LCD-prova_1 DISCO_L496AG-LCD-prova_2 DISCO_L496AG-LCD-demo DISCO_L496AG-SRAM-demo

Drivers/BSP/STM32L496G-Discovery/stm32l496g_discovery_ts.c@2:106c7b82e064, 2019-11-20 (annotated)

Committer:
Jerome Coutant
Date:
Wed Nov 20 16:48:24 2019 +0100
Revision:
2:106c7b82e064
Parent:
0:d83f1c8ca282 
Update BSP files with CubeL4 V1.14.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bcostm 0:d83f1c8ca282 1 /**
bcostm 0:d83f1c8ca282 2 ******************************************************************************
bcostm 0:d83f1c8ca282 3 * @file stm32l496g_discovery_ts.c
bcostm 0:d83f1c8ca282 4 * @author MCD Application Team
bcostm 0:d83f1c8ca282 5 * @brief This file provides a set of functions needed to manage the Touch
bcostm 0:d83f1c8ca282 6 * Screen on STM32L496G-DISCOVERY evaluation board.
bcostm 0:d83f1c8ca282 7 ******************************************************************************
bcostm 0:d83f1c8ca282 8 * @attention
bcostm 0:d83f1c8ca282 9 *
Jerome Coutant 2:106c7b82e064 10 * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics.
Jerome Coutant 2:106c7b82e064 11 * All rights reserved.</center></h2>
bcostm 0:d83f1c8ca282 12 *
Jerome Coutant 2:106c7b82e064 13 * This software component is licensed by ST under BSD 3-Clause license,
Jerome Coutant 2:106c7b82e064 14 * the "License"; You may not use this file except in compliance with the
Jerome Coutant 2:106c7b82e064 15 * License. You may obtain a copy of the License at:
Jerome Coutant 2:106c7b82e064 16 * opensource.org/licenses/BSD-3-Clause
bcostm 0:d83f1c8ca282 17 *
bcostm 0:d83f1c8ca282 18 ******************************************************************************
bcostm 0:d83f1c8ca282 19 */
bcostm 0:d83f1c8ca282 20
bcostm 0:d83f1c8ca282 21 /* File Info : -----------------------------------------------------------------
bcostm 0:d83f1c8ca282 22 User NOTES
bcostm 0:d83f1c8ca282 23 1. How To use this driver:
bcostm 0:d83f1c8ca282 24 --------------------------
bcostm 0:d83f1c8ca282 25 - This driver is used to drive the touch screen module of the STM32L496G-DISCOVERY
bcostm 0:d83f1c8ca282 26 evaluation board on the FRIDA LCD mounted on MB1261 daughter board.
bcostm 0:d83f1c8ca282 27 The touch screen driver IC is a FT6x36 type which share the same register naming
bcostm 0:d83f1c8ca282 28 with FT6206 type.
bcostm 0:d83f1c8ca282 29
bcostm 0:d83f1c8ca282 30 2. Driver description:
bcostm 0:d83f1c8ca282 31 ---------------------
bcostm 0:d83f1c8ca282 32 + Initialization steps:
bcostm 0:d83f1c8ca282 33 o Initialize the TS module using the BSP_TS_Init() function. This
bcostm 0:d83f1c8ca282 34 function includes the MSP layer hardware resources initialization and the
bcostm 0:d83f1c8ca282 35 communication layer configuration to start the TS use. The LCD size properties
bcostm 0:d83f1c8ca282 36 (x and y) are passed as parameters.
bcostm 0:d83f1c8ca282 37 o If TS interrupt mode is desired, you must configure the TS interrupt mode
bcostm 0:d83f1c8ca282 38 by calling the function BSP_TS_ITConfig(). The TS interrupt mode is generated
bcostm 0:d83f1c8ca282 39 as an external interrupt whenever a touch is detected.
bcostm 0:d83f1c8ca282 40
bcostm 0:d83f1c8ca282 41 + Touch screen use
bcostm 0:d83f1c8ca282 42 o The touch screen state is captured whenever the function BSP_TS_GetState() is
bcostm 0:d83f1c8ca282 43 used. This function returns information about the last LCD touch occurred
bcostm 0:d83f1c8ca282 44 in the TS_StateTypeDef structure.
bcostm 0:d83f1c8ca282 45 ------------------------------------------------------------------------------*/
bcostm 0:d83f1c8ca282 46
bcostm 0:d83f1c8ca282 47 /* Includes ------------------------------------------------------------------*/
bcostm 0:d83f1c8ca282 48 #include "stm32l496g_discovery.h"
bcostm 0:d83f1c8ca282 49 #include "stm32l496g_discovery_ts.h"
bcostm 0:d83f1c8ca282 50
bcostm 0:d83f1c8ca282 51 /** @addtogroup BSP
bcostm 0:d83f1c8ca282 52 * @{
bcostm 0:d83f1c8ca282 53 */
bcostm 0:d83f1c8ca282 54
bcostm 0:d83f1c8ca282 55 /** @addtogroup STM32L496G-DISCOVERY
bcostm 0:d83f1c8ca282 56 * @{
bcostm 0:d83f1c8ca282 57 */
bcostm 0:d83f1c8ca282 58
bcostm 0:d83f1c8ca282 59 /** @defgroup STM32L496G-DISCOVERY_TS STM32L496G-DISCOVERY TS
bcostm 0:d83f1c8ca282 60 * @{
bcostm 0:d83f1c8ca282 61 */
bcostm 0:d83f1c8ca282 62
bcostm 0:d83f1c8ca282 63 /** @defgroup STM32L496G-DISCOVERY_TS_Private_Types_Definitions TS Private Types Definitions
bcostm 0:d83f1c8ca282 64 * @{
bcostm 0:d83f1c8ca282 65 */
bcostm 0:d83f1c8ca282 66 /**
bcostm 0:d83f1c8ca282 67 * @}
bcostm 0:d83f1c8ca282 68 */
bcostm 0:d83f1c8ca282 69
bcostm 0:d83f1c8ca282 70 /** @defgroup STM32L496G-DISCOVERY_TS_Private_Defines TS Private Types Defines
bcostm 0:d83f1c8ca282 71 * @{
bcostm 0:d83f1c8ca282 72 */
bcostm 0:d83f1c8ca282 73 /**
bcostm 0:d83f1c8ca282 74 * @}
bcostm 0:d83f1c8ca282 75 */
bcostm 0:d83f1c8ca282 76
bcostm 0:d83f1c8ca282 77 /** @defgroup STM32L496G-DISCOVERY_TS_Private_Macros TS Private Macros
bcostm 0:d83f1c8ca282 78 * @{
bcostm 0:d83f1c8ca282 79 */
bcostm 0:d83f1c8ca282 80 /**
bcostm 0:d83f1c8ca282 81 * @}
bcostm 0:d83f1c8ca282 82 */
bcostm 0:d83f1c8ca282 83
bcostm 0:d83f1c8ca282 84 /** @defgroup STM32L496G-DISCOVERY_TS_Imported_Variables TS Imported Variables
bcostm 0:d83f1c8ca282 85 * @{
bcostm 0:d83f1c8ca282 86 */
bcostm 0:d83f1c8ca282 87 /**
bcostm 0:d83f1c8ca282 88 * @}
bcostm 0:d83f1c8ca282 89 */
bcostm 0:d83f1c8ca282 90
bcostm 0:d83f1c8ca282 91 /** @defgroup STM32L496G-DISCOVERY_TS_Private_Variables TS Private Variables
bcostm 0:d83f1c8ca282 92 * @{
bcostm 0:d83f1c8ca282 93 */
bcostm 0:d83f1c8ca282 94 static TS_DrvTypeDef *tsDriver;
bcostm 0:d83f1c8ca282 95 static uint8_t I2C_Address = 0;
bcostm 0:d83f1c8ca282 96 static uint8_t tsOrientation = TS_SWAP_NONE;
bcostm 0:d83f1c8ca282 97 static uint8_t TS_orientation = TS_ORIENTATION_UNDEFINED;
bcostm 0:d83f1c8ca282 98
bcostm 0:d83f1c8ca282 99 /* Table for touchscreen event information display on LCD : table indexed on enum @ref TS_TouchEventTypeDef information */
bcostm 0:d83f1c8ca282 100 char *ts_event_string_tab[TOUCH_EVENT_NB_MAX] = { "None",
bcostm 0:d83f1c8ca282 101 "Press down",
bcostm 0:d83f1c8ca282 102 "Lift up",
bcostm 0:d83f1c8ca282 103 "Contact"
bcostm 0:d83f1c8ca282 104 };
bcostm 0:d83f1c8ca282 105
bcostm 0:d83f1c8ca282 106 /* Table for touchscreen gesture Id information display on LCD : table indexed on enum @ref TS_GestureIdTypeDef information */
bcostm 0:d83f1c8ca282 107 char *ts_gesture_id_string_tab[GEST_ID_NB_MAX] = { "None",
bcostm 0:d83f1c8ca282 108 "Move Up",
bcostm 0:d83f1c8ca282 109 "Move Right",
bcostm 0:d83f1c8ca282 110 "Move Down",
bcostm 0:d83f1c8ca282 111 "Move Left",
bcostm 0:d83f1c8ca282 112 "Zoom In",
bcostm 0:d83f1c8ca282 113 "Zoom Out"
bcostm 0:d83f1c8ca282 114 };
bcostm 0:d83f1c8ca282 115 /**
bcostm 0:d83f1c8ca282 116 * @}
bcostm 0:d83f1c8ca282 117 */
bcostm 0:d83f1c8ca282 118
bcostm 0:d83f1c8ca282 119 /** @defgroup STM32L496G-DISCOVERY_TS_Private_Function_Prototypes TS Private Function Prototypes
bcostm 0:d83f1c8ca282 120 * @{
bcostm 0:d83f1c8ca282 121 */
bcostm 0:d83f1c8ca282 122 /**
bcostm 0:d83f1c8ca282 123 * @}
bcostm 0:d83f1c8ca282 124 */
bcostm 0:d83f1c8ca282 125
bcostm 0:d83f1c8ca282 126 /** @defgroup STM32L496G-DISCOVERY_TS_Public_Functions TS Public Functions
bcostm 0:d83f1c8ca282 127 * @{
bcostm 0:d83f1c8ca282 128 */
bcostm 0:d83f1c8ca282 129 /**
bcostm 0:d83f1c8ca282 130 * @brief Initializes and configures the touch screen functionalities and
bcostm 0:d83f1c8ca282 131 * configures all necessary hardware resources (GPIOs, I2C, clocks..).
bcostm 0:d83f1c8ca282 132 * @param ts_SizeX : Maximum X size of the TS area on LCD
bcostm 0:d83f1c8ca282 133 * @param ts_SizeY : Maximum Y size of the TS area on LCD
bcostm 0:d83f1c8ca282 134 * @retval TS_OK if all initializations are OK. Other value if error.
bcostm 0:d83f1c8ca282 135 */
bcostm 0:d83f1c8ca282 136 uint8_t BSP_TS_Init(uint16_t ts_SizeX, uint16_t ts_SizeY)
bcostm 0:d83f1c8ca282 137 {
bcostm 0:d83f1c8ca282 138 return (BSP_TS_InitEx(ts_SizeX, ts_SizeY, TS_ORIENTATION_LANDSCAPE));
bcostm 0:d83f1c8ca282 139 }
bcostm 0:d83f1c8ca282 140
bcostm 0:d83f1c8ca282 141 /**
bcostm 0:d83f1c8ca282 142 * @brief Initializes and configures the touch screen functionalities and
bcostm 0:d83f1c8ca282 143 * configures all necessary hardware resources (GPIOs, I2C, clocks..)
bcostm 0:d83f1c8ca282 144 * with a given orientation
bcostm 0:d83f1c8ca282 145 * @param ts_SizeX : Maximum X size of the TS area on LCD
bcostm 0:d83f1c8ca282 146 * @param ts_SizeY : Maximum Y size of the TS area on LCD
bcostm 0:d83f1c8ca282 147 * @param orientation : TS_ORIENTATION_LANDSCAPE or TS_ORIENTATION_PORTRAIT
bcostm 0:d83f1c8ca282 148 * @retval TS_OK if all initializations are OK. Other value if error.
bcostm 0:d83f1c8ca282 149 */
bcostm 0:d83f1c8ca282 150 uint8_t BSP_TS_InitEx(uint16_t ts_SizeX, uint16_t ts_SizeY, uint8_t orientation)
bcostm 0:d83f1c8ca282 151 {
bcostm 0:d83f1c8ca282 152 uint8_t ts_status = TS_OK;
bcostm 0:d83f1c8ca282 153 uint16_t read_id = 0;
bcostm 0:d83f1c8ca282 154
bcostm 0:d83f1c8ca282 155 /* Note : I2C_Address is un-initialized here, but is not used at all in init function */
bcostm 0:d83f1c8ca282 156 /* but the prototype of Init() is like that in template and should be respected */
bcostm 0:d83f1c8ca282 157
bcostm 0:d83f1c8ca282 158 /* Initialize the communication channel to sensor (I2C) if necessary */
bcostm 0:d83f1c8ca282 159 /* that is initialization is done only once after a power up */
bcostm 0:d83f1c8ca282 160 ft6x06_ts_drv.Init(I2C_Address);
bcostm 0:d83f1c8ca282 161
bcostm 0:d83f1c8ca282 162 /* Scan FT6x36 TouchScreen IC controller ID register by I2C Read */
bcostm 0:d83f1c8ca282 163 /* Verify this is a FT6x36, otherwise this is an error case */
bcostm 0:d83f1c8ca282 164
bcostm 0:d83f1c8ca282 165 read_id = ft6x06_ts_drv.ReadID(TS_I2C_ADDRESS);
bcostm 0:d83f1c8ca282 166
bcostm 0:d83f1c8ca282 167 if (read_id == FT6x36_ID_VALUE)
bcostm 0:d83f1c8ca282 168 {
bcostm 0:d83f1c8ca282 169 /* Found FT6x36 : Initialize the TS driver structure */
bcostm 0:d83f1c8ca282 170 tsDriver = &ft6x06_ts_drv;
bcostm 0:d83f1c8ca282 171
bcostm 0:d83f1c8ca282 172 I2C_Address = TS_I2C_ADDRESS;
bcostm 0:d83f1c8ca282 173
bcostm 0:d83f1c8ca282 174 /* Get LCD chosen orientation */
bcostm 0:d83f1c8ca282 175 if (orientation == TS_ORIENTATION_PORTRAIT)
bcostm 0:d83f1c8ca282 176 {
bcostm 0:d83f1c8ca282 177 tsOrientation = TS_SWAP_X | TS_SWAP_Y;
bcostm 0:d83f1c8ca282 178 TS_orientation = TS_ORIENTATION_PORTRAIT;
bcostm 0:d83f1c8ca282 179 }
bcostm 0:d83f1c8ca282 180 else
bcostm 0:d83f1c8ca282 181 {
bcostm 0:d83f1c8ca282 182 tsOrientation = TS_SWAP_XY | TS_SWAP_Y;
bcostm 0:d83f1c8ca282 183 TS_orientation = TS_ORIENTATION_LANDSCAPE;
bcostm 0:d83f1c8ca282 184 }
bcostm 0:d83f1c8ca282 185
bcostm 0:d83f1c8ca282 186 if (ts_status == TS_OK)
bcostm 0:d83f1c8ca282 187 {
bcostm 0:d83f1c8ca282 188 /* Software reset the TouchScreen */
bcostm 0:d83f1c8ca282 189 tsDriver->Reset(I2C_Address);
bcostm 0:d83f1c8ca282 190
bcostm 0:d83f1c8ca282 191 /* Calibrate, Configure and Start the TouchScreen driver */
bcostm 0:d83f1c8ca282 192 tsDriver->Start(I2C_Address);
bcostm 0:d83f1c8ca282 193
bcostm 0:d83f1c8ca282 194 return TS_OK;
bcostm 0:d83f1c8ca282 195
bcostm 0:d83f1c8ca282 196 } /* of if(ts_status == TS_OK) */
bcostm 0:d83f1c8ca282 197 }
bcostm 0:d83f1c8ca282 198
bcostm 0:d83f1c8ca282 199 return TS_DEVICE_NOT_FOUND;
bcostm 0:d83f1c8ca282 200
bcostm 0:d83f1c8ca282 201
bcostm 0:d83f1c8ca282 202 }
bcostm 0:d83f1c8ca282 203
bcostm 0:d83f1c8ca282 204 /**
bcostm 0:d83f1c8ca282 205 * @brief Configures and enables the touch screen interrupts.
bcostm 0:d83f1c8ca282 206 * @retval TS_OK if all initializations are OK. Other value if error.
bcostm 0:d83f1c8ca282 207 */
bcostm 0:d83f1c8ca282 208 uint8_t BSP_TS_ITConfig(void)
bcostm 0:d83f1c8ca282 209 {
bcostm 0:d83f1c8ca282 210 uint8_t ts_status = TS_OK;
bcostm 0:d83f1c8ca282 211
bcostm 0:d83f1c8ca282 212 /* Msp Init of GPIO used for TS_INT pin coming from TouchScreen driver IC FT6x36 */
bcostm 0:d83f1c8ca282 213 /* When touchscreen is operated in interrupt mode */
bcostm 0:d83f1c8ca282 214 BSP_TS_INT_MspInit();
bcostm 0:d83f1c8ca282 215
bcostm 0:d83f1c8ca282 216 /* Enable the TS in interrupt mode */
bcostm 0:d83f1c8ca282 217 /* In that case the INT output of FT6206 when new touch is available */
bcostm 0:d83f1c8ca282 218 /* is active on low level and directed on EXTI */
bcostm 0:d83f1c8ca282 219 tsDriver->EnableIT(I2C_Address);
bcostm 0:d83f1c8ca282 220
bcostm 0:d83f1c8ca282 221 return (ts_status);
bcostm 0:d83f1c8ca282 222 }
bcostm 0:d83f1c8ca282 223
bcostm 0:d83f1c8ca282 224 /**
bcostm 0:d83f1c8ca282 225 * @brief deConfigures and enables the touch screen interrupts.
bcostm 0:d83f1c8ca282 226 * @retval TS_OK if all initializations are OK. Other value if error.
bcostm 0:d83f1c8ca282 227 */
bcostm 0:d83f1c8ca282 228 uint8_t BSP_TS_ITDeConfig(void)
bcostm 0:d83f1c8ca282 229 {
bcostm 0:d83f1c8ca282 230 uint8_t ts_status = TS_OK;
bcostm 0:d83f1c8ca282 231
bcostm 0:d83f1c8ca282 232 /* Msp Init of GPIO used for TS_INT pin coming from TouchScreen driver IC FT6x36 */
bcostm 0:d83f1c8ca282 233 /* When touchscreen is operated in interrupt mode */
bcostm 0:d83f1c8ca282 234 BSP_TS_INT_MspDeInit();
bcostm 0:d83f1c8ca282 235
bcostm 0:d83f1c8ca282 236 /* Enable the TS in interrupt mode */
bcostm 0:d83f1c8ca282 237 /* In that case the INT output of FT6206 when new touch is available */
bcostm 0:d83f1c8ca282 238 /* is active on low level and directed on EXTI */
bcostm 0:d83f1c8ca282 239 tsDriver->DisableIT(I2C_Address);
bcostm 0:d83f1c8ca282 240
bcostm 0:d83f1c8ca282 241 return (ts_status);
bcostm 0:d83f1c8ca282 242 }
bcostm 0:d83f1c8ca282 243
bcostm 0:d83f1c8ca282 244
bcostm 0:d83f1c8ca282 245 /**
bcostm 0:d83f1c8ca282 246 * @brief Returns status and positions of the touch screen.
bcostm 0:d83f1c8ca282 247 * @param TS_State: Pointer to touch screen current state structure
bcostm 0:d83f1c8ca282 248 * @retval TS_OK if all initializations are OK. Other value if error.
bcostm 0:d83f1c8ca282 249 */
bcostm 0:d83f1c8ca282 250 uint8_t BSP_TS_GetState(TS_StateTypeDef *TS_State)
bcostm 0:d83f1c8ca282 251 {
bcostm 0:d83f1c8ca282 252 static uint32_t _x[TS_MAX_NB_TOUCH] = {0, 0};
bcostm 0:d83f1c8ca282 253 static uint32_t _y[TS_MAX_NB_TOUCH] = {0, 0};
bcostm 0:d83f1c8ca282 254 uint8_t ts_status = TS_OK;
bcostm 0:d83f1c8ca282 255 uint16_t tmp;
bcostm 0:d83f1c8ca282 256 uint16_t Raw_x[TS_MAX_NB_TOUCH];
bcostm 0:d83f1c8ca282 257 uint16_t Raw_y[TS_MAX_NB_TOUCH];
bcostm 0:d83f1c8ca282 258 uint16_t xDiff;
bcostm 0:d83f1c8ca282 259 uint16_t yDiff;
bcostm 0:d83f1c8ca282 260 uint32_t index;
bcostm 0:d83f1c8ca282 261 #if (TS_MULTI_TOUCH_SUPPORTED == 1)
bcostm 0:d83f1c8ca282 262 uint32_t weight = 0;
bcostm 0:d83f1c8ca282 263 uint32_t area = 0;
bcostm 0:d83f1c8ca282 264 uint32_t event = 0;
bcostm 0:d83f1c8ca282 265 #endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
bcostm 0:d83f1c8ca282 266
bcostm 0:d83f1c8ca282 267 /* Check and update the number of touches active detected */
bcostm 0:d83f1c8ca282 268 TS_State->touchDetected = tsDriver->DetectTouch(I2C_Address);
bcostm 0:d83f1c8ca282 269 if (TS_State->touchDetected)
bcostm 0:d83f1c8ca282 270 {
bcostm 0:d83f1c8ca282 271 for (index = 0; index < TS_State->touchDetected; index++)
bcostm 0:d83f1c8ca282 272 {
bcostm 0:d83f1c8ca282 273 /* Get each touch coordinates */
bcostm 0:d83f1c8ca282 274 tsDriver->GetXY(I2C_Address, &(Raw_x[index]), &(Raw_y[index]));
bcostm 0:d83f1c8ca282 275
bcostm 0:d83f1c8ca282 276 if (tsOrientation & TS_SWAP_XY)
bcostm 0:d83f1c8ca282 277 {
bcostm 0:d83f1c8ca282 278 tmp = Raw_x[index];
bcostm 0:d83f1c8ca282 279 Raw_x[index] = Raw_y[index];
bcostm 0:d83f1c8ca282 280 Raw_y[index] = tmp;
bcostm 0:d83f1c8ca282 281 }
bcostm 0:d83f1c8ca282 282
bcostm 0:d83f1c8ca282 283 if (tsOrientation & TS_SWAP_X)
bcostm 0:d83f1c8ca282 284 {
bcostm 0:d83f1c8ca282 285 Raw_x[index] = FT_6206_MAX_WIDTH_HEIGHT - 1 - Raw_x[index];
bcostm 0:d83f1c8ca282 286 }
bcostm 0:d83f1c8ca282 287
bcostm 0:d83f1c8ca282 288 if (tsOrientation & TS_SWAP_Y)
bcostm 0:d83f1c8ca282 289 {
bcostm 0:d83f1c8ca282 290 Raw_y[index] = FT_6206_MAX_WIDTH_HEIGHT - 1 - Raw_y[index];
bcostm 0:d83f1c8ca282 291 }
bcostm 0:d83f1c8ca282 292
bcostm 0:d83f1c8ca282 293 xDiff = Raw_x[index] > _x[index] ? (Raw_x[index] - _x[index]) : (_x[index] - Raw_x[index]);
bcostm 0:d83f1c8ca282 294 yDiff = Raw_y[index] > _y[index] ? (Raw_y[index] - _y[index]) : (_y[index] - Raw_y[index]);
bcostm 0:d83f1c8ca282 295
bcostm 0:d83f1c8ca282 296 if ((xDiff + yDiff) > 5)
bcostm 0:d83f1c8ca282 297 {
bcostm 0:d83f1c8ca282 298 _x[index] = Raw_x[index];
bcostm 0:d83f1c8ca282 299 _y[index] = Raw_y[index];
bcostm 0:d83f1c8ca282 300 }
bcostm 0:d83f1c8ca282 301
bcostm 0:d83f1c8ca282 302
bcostm 0:d83f1c8ca282 303 TS_State->touchX[index] = _x[index];
bcostm 0:d83f1c8ca282 304 TS_State->touchY[index] = _y[index];
bcostm 0:d83f1c8ca282 305
bcostm 0:d83f1c8ca282 306 #if (TS_MULTI_TOUCH_SUPPORTED == 1)
bcostm 0:d83f1c8ca282 307
bcostm 0:d83f1c8ca282 308 /* Get touch info related to the current touch */
bcostm 0:d83f1c8ca282 309 ft6x06_TS_GetTouchInfo(I2C_Address, index, &weight, &area, &event);
bcostm 0:d83f1c8ca282 310
bcostm 0:d83f1c8ca282 311 /* Update TS_State structure */
bcostm 0:d83f1c8ca282 312 TS_State->touchWeight[index] = weight;
bcostm 0:d83f1c8ca282 313 TS_State->touchArea[index] = area;
bcostm 0:d83f1c8ca282 314
bcostm 0:d83f1c8ca282 315 /* Remap touch event */
bcostm 0:d83f1c8ca282 316 switch (event)
bcostm 0:d83f1c8ca282 317 {
bcostm 0:d83f1c8ca282 318 case FT6206_TOUCH_EVT_FLAG_PRESS_DOWN :
bcostm 0:d83f1c8ca282 319 TS_State->touchEventId[index] = TOUCH_EVENT_PRESS_DOWN;
bcostm 0:d83f1c8ca282 320 break;
bcostm 0:d83f1c8ca282 321 case FT6206_TOUCH_EVT_FLAG_LIFT_UP :
bcostm 0:d83f1c8ca282 322 TS_State->touchEventId[index] = TOUCH_EVENT_LIFT_UP;
bcostm 0:d83f1c8ca282 323 break;
bcostm 0:d83f1c8ca282 324 case FT6206_TOUCH_EVT_FLAG_CONTACT :
bcostm 0:d83f1c8ca282 325 TS_State->touchEventId[index] = TOUCH_EVENT_CONTACT;
bcostm 0:d83f1c8ca282 326 break;
bcostm 0:d83f1c8ca282 327 case FT6206_TOUCH_EVT_FLAG_NO_EVENT :
bcostm 0:d83f1c8ca282 328 TS_State->touchEventId[index] = TOUCH_EVENT_NO_EVT;
bcostm 0:d83f1c8ca282 329 break;
bcostm 0:d83f1c8ca282 330 default :
bcostm 0:d83f1c8ca282 331 ts_status = TS_ERROR;
bcostm 0:d83f1c8ca282 332 break;
bcostm 0:d83f1c8ca282 333 } /* of switch(event) */
bcostm 0:d83f1c8ca282 334
bcostm 0:d83f1c8ca282 335 #endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
bcostm 0:d83f1c8ca282 336
bcostm 0:d83f1c8ca282 337 } /* of for(index=0; index < TS_State->touchDetected; index++) */
bcostm 0:d83f1c8ca282 338
bcostm 0:d83f1c8ca282 339 #if (TS_MULTI_TOUCH_SUPPORTED == 1)
bcostm 0:d83f1c8ca282 340 /* Get gesture Id */
bcostm 0:d83f1c8ca282 341 ts_status = BSP_TS_Get_GestureId(TS_State);
bcostm 0:d83f1c8ca282 342 #endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
bcostm 0:d83f1c8ca282 343
bcostm 0:d83f1c8ca282 344 } /* end of if(TS_State->touchDetected != 0) */
bcostm 0:d83f1c8ca282 345
bcostm 0:d83f1c8ca282 346 return (ts_status);
bcostm 0:d83f1c8ca282 347 }
bcostm 0:d83f1c8ca282 348
bcostm 0:d83f1c8ca282 349 #if (TS_MULTI_TOUCH_SUPPORTED == 1)
bcostm 0:d83f1c8ca282 350 /**
bcostm 0:d83f1c8ca282 351 * @brief Update gesture Id following a touch detected.
bcostm 0:d83f1c8ca282 352 * @param TS_State: Pointer to touch screen current state structure
bcostm 0:d83f1c8ca282 353 * @retval TS_OK if all initializations are OK. Other value if error.
bcostm 0:d83f1c8ca282 354 */
bcostm 0:d83f1c8ca282 355 uint8_t BSP_TS_Get_GestureId(TS_StateTypeDef *TS_State)
bcostm 0:d83f1c8ca282 356 {
bcostm 0:d83f1c8ca282 357 uint32_t gestureId = 0;
bcostm 0:d83f1c8ca282 358 uint8_t ts_status = TS_OK;
bcostm 0:d83f1c8ca282 359
bcostm 0:d83f1c8ca282 360 /* Get gesture Id */
bcostm 0:d83f1c8ca282 361 ft6x06_TS_GetGestureID(I2C_Address, &gestureId);
bcostm 0:d83f1c8ca282 362
bcostm 0:d83f1c8ca282 363 /* Remap gesture Id to a TS_GestureIdTypeDef value */
bcostm 0:d83f1c8ca282 364 switch (gestureId)
bcostm 0:d83f1c8ca282 365 {
bcostm 0:d83f1c8ca282 366 case FT6206_GEST_ID_NO_GESTURE :
bcostm 0:d83f1c8ca282 367 TS_State->gestureId = GEST_ID_NO_GESTURE;
bcostm 0:d83f1c8ca282 368 break;
bcostm 0:d83f1c8ca282 369 case FT6206_GEST_ID_MOVE_UP :
bcostm 0:d83f1c8ca282 370 TS_State->gestureId = GEST_ID_MOVE_UP;
bcostm 0:d83f1c8ca282 371 break;
bcostm 0:d83f1c8ca282 372 case FT6206_GEST_ID_MOVE_RIGHT :
bcostm 0:d83f1c8ca282 373 TS_State->gestureId = GEST_ID_MOVE_RIGHT;
bcostm 0:d83f1c8ca282 374 break;
bcostm 0:d83f1c8ca282 375 case FT6206_GEST_ID_MOVE_DOWN :
bcostm 0:d83f1c8ca282 376 TS_State->gestureId = GEST_ID_MOVE_DOWN;
bcostm 0:d83f1c8ca282 377 break;
bcostm 0:d83f1c8ca282 378 case FT6206_GEST_ID_MOVE_LEFT :
bcostm 0:d83f1c8ca282 379 TS_State->gestureId = GEST_ID_MOVE_LEFT;
bcostm 0:d83f1c8ca282 380 break;
bcostm 0:d83f1c8ca282 381 case FT6206_GEST_ID_ZOOM_IN :
bcostm 0:d83f1c8ca282 382 TS_State->gestureId = GEST_ID_ZOOM_IN;
bcostm 0:d83f1c8ca282 383 break;
bcostm 0:d83f1c8ca282 384 case FT6206_GEST_ID_ZOOM_OUT :
bcostm 0:d83f1c8ca282 385 TS_State->gestureId = GEST_ID_ZOOM_OUT;
bcostm 0:d83f1c8ca282 386 break;
bcostm 0:d83f1c8ca282 387 default :
bcostm 0:d83f1c8ca282 388 ts_status = TS_ERROR;
bcostm 0:d83f1c8ca282 389 break;
bcostm 0:d83f1c8ca282 390 } /* of switch(gestureId) */
bcostm 0:d83f1c8ca282 391
bcostm 0:d83f1c8ca282 392 return (ts_status);
bcostm 0:d83f1c8ca282 393 }
bcostm 0:d83f1c8ca282 394 #endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
bcostm 0:d83f1c8ca282 395
bcostm 0:d83f1c8ca282 396
bcostm 0:d83f1c8ca282 397 /** @defgroup STM32L496G-DISCOVERY_TS_Private_Functions TS Private Functions
bcostm 0:d83f1c8ca282 398 * @{
bcostm 0:d83f1c8ca282 399 */
bcostm 0:d83f1c8ca282 400
bcostm 0:d83f1c8ca282 401 #if (TS_MULTI_TOUCH_SUPPORTED == 1)
bcostm 0:d83f1c8ca282 402 /**
bcostm 0:d83f1c8ca282 403 * @brief Function used to reset all touch data before a new acquisition
bcostm 0:d83f1c8ca282 404 * of touch information.
bcostm 0:d83f1c8ca282 405 * @param TS_State: Pointer to touch screen current state structure
bcostm 0:d83f1c8ca282 406 * @retval TS_OK if OK, TE_ERROR if problem found.
bcostm 0:d83f1c8ca282 407 */
bcostm 0:d83f1c8ca282 408 uint8_t BSP_TS_ResetTouchData(TS_StateTypeDef *TS_State)
bcostm 0:d83f1c8ca282 409 {
bcostm 0:d83f1c8ca282 410 uint8_t ts_status = TS_ERROR;
bcostm 0:d83f1c8ca282 411 uint32_t index;
bcostm 0:d83f1c8ca282 412
bcostm 0:d83f1c8ca282 413 if (TS_State != (TS_StateTypeDef *)NULL)
bcostm 0:d83f1c8ca282 414 {
bcostm 0:d83f1c8ca282 415 TS_State->gestureId = GEST_ID_NO_GESTURE;
bcostm 0:d83f1c8ca282 416 TS_State->touchDetected = 0;
bcostm 0:d83f1c8ca282 417
bcostm 0:d83f1c8ca282 418 for (index = 0; index < TS_MAX_NB_TOUCH; index++)
bcostm 0:d83f1c8ca282 419 {
bcostm 0:d83f1c8ca282 420 TS_State->touchX[index] = 0;
bcostm 0:d83f1c8ca282 421 TS_State->touchY[index] = 0;
bcostm 0:d83f1c8ca282 422 TS_State->touchArea[index] = 0;
bcostm 0:d83f1c8ca282 423 TS_State->touchEventId[index] = TOUCH_EVENT_NO_EVT;
bcostm 0:d83f1c8ca282 424 TS_State->touchWeight[index] = 0;
bcostm 0:d83f1c8ca282 425 }
bcostm 0:d83f1c8ca282 426
bcostm 0:d83f1c8ca282 427 ts_status = TS_OK;
bcostm 0:d83f1c8ca282 428
bcostm 0:d83f1c8ca282 429 } /* of if (TS_State != (TS_StateTypeDef *)NULL) */
bcostm 0:d83f1c8ca282 430
bcostm 0:d83f1c8ca282 431 return (ts_status);
bcostm 0:d83f1c8ca282 432 }
bcostm 0:d83f1c8ca282 433 #endif /* TS_MULTI_TOUCH_SUPPORTED == 1 */
bcostm 0:d83f1c8ca282 434
bcostm 0:d83f1c8ca282 435
bcostm 0:d83f1c8ca282 436 uint8_t BSP_TS_GetOrientation(void)
bcostm 0:d83f1c8ca282 437 {
bcostm 0:d83f1c8ca282 438 return TS_orientation;
bcostm 0:d83f1c8ca282 439 }
bcostm 0:d83f1c8ca282 440
bcostm 0:d83f1c8ca282 441 /**
bcostm 0:d83f1c8ca282 442 * @brief Initializes the TS_INT pin MSP.
bcostm 0:d83f1c8ca282 443 * @param None
bcostm 0:d83f1c8ca282 444 * @retval None
bcostm 0:d83f1c8ca282 445 */
bcostm 0:d83f1c8ca282 446 __weak void BSP_TS_INT_MspInit(void)
bcostm 0:d83f1c8ca282 447 {
bcostm 0:d83f1c8ca282 448 GPIO_InitTypeDef gpio_init_structure;
bcostm 0:d83f1c8ca282 449
bcostm 0:d83f1c8ca282 450 __HAL_RCC_PWR_CLK_ENABLE();
bcostm 0:d83f1c8ca282 451 SET_BIT(PWR->CR2, PWR_CR2_IOSV);
bcostm 0:d83f1c8ca282 452
bcostm 0:d83f1c8ca282 453 TS_INT_GPIO_CLK_ENABLE();
bcostm 0:d83f1c8ca282 454
bcostm 0:d83f1c8ca282 455 /* GPIO configuration in input for TouchScreen interrupt signal on TS_INT pin */
bcostm 0:d83f1c8ca282 456 gpio_init_structure.Pin = TS_INT_PIN;
bcostm 0:d83f1c8ca282 457
bcostm 0:d83f1c8ca282 458 /* Configure Interrupt mode for TS_INT pin falling edge : when a new touch is available */
bcostm 0:d83f1c8ca282 459 /* TS_INT pin is active on low level on new touch available */
bcostm 0:d83f1c8ca282 460 gpio_init_structure.Pin = TS_INT_PIN;
bcostm 0:d83f1c8ca282 461 gpio_init_structure.Pull = GPIO_PULLUP;
bcostm 0:d83f1c8ca282 462 gpio_init_structure.Speed = GPIO_SPEED_FAST;
bcostm 0:d83f1c8ca282 463 gpio_init_structure.Mode = GPIO_MODE_IT_FALLING;
bcostm 0:d83f1c8ca282 464 HAL_GPIO_Init(TS_INT_GPIO_PORT, &gpio_init_structure);
bcostm 0:d83f1c8ca282 465
bcostm 0:d83f1c8ca282 466 /* Enable and set the TS_INT EXTI Interrupt to an intermediate priority */
bcostm 0:d83f1c8ca282 467 HAL_NVIC_SetPriority((IRQn_Type)(TS_INT_EXTI_IRQn), 0x08, 0x00);
bcostm 0:d83f1c8ca282 468 HAL_NVIC_EnableIRQ((IRQn_Type)(TS_INT_EXTI_IRQn));
bcostm 0:d83f1c8ca282 469 }
bcostm 0:d83f1c8ca282 470
bcostm 0:d83f1c8ca282 471 /**
bcostm 0:d83f1c8ca282 472 * @brief Initializes the TS_INT pin MSP.
bcostm 0:d83f1c8ca282 473 * @param None
bcostm 0:d83f1c8ca282 474 * @retval None
bcostm 0:d83f1c8ca282 475 */
bcostm 0:d83f1c8ca282 476 __weak void BSP_TS_INT_MspDeInit(void)
bcostm 0:d83f1c8ca282 477 {
bcostm 0:d83f1c8ca282 478 GPIO_InitTypeDef gpio_init_structure;
bcostm 0:d83f1c8ca282 479
bcostm 0:d83f1c8ca282 480 __HAL_RCC_PWR_CLK_ENABLE();
bcostm 0:d83f1c8ca282 481 SET_BIT(PWR->CR2, PWR_CR2_IOSV);
bcostm 0:d83f1c8ca282 482
bcostm 0:d83f1c8ca282 483 TS_INT_GPIO_CLK_ENABLE();
bcostm 0:d83f1c8ca282 484
bcostm 0:d83f1c8ca282 485 /* GPIO configuration in input for TouchScreen interrupt signal on TS_INT pin */
bcostm 0:d83f1c8ca282 486 gpio_init_structure.Pin = TS_INT_PIN;
bcostm 0:d83f1c8ca282 487
bcostm 0:d83f1c8ca282 488 gpio_init_structure.Pin = GPIO_PIN_All;
bcostm 0:d83f1c8ca282 489 gpio_init_structure.Mode = GPIO_MODE_ANALOG;
bcostm 0:d83f1c8ca282 490 gpio_init_structure.Pull = GPIO_NOPULL;
bcostm 0:d83f1c8ca282 491 HAL_GPIO_Init(TS_INT_GPIO_PORT, &gpio_init_structure);
bcostm 0:d83f1c8ca282 492
bcostm 0:d83f1c8ca282 493 HAL_NVIC_DisableIRQ((IRQn_Type)(TS_INT_EXTI_IRQn));
bcostm 0:d83f1c8ca282 494 }
bcostm 0:d83f1c8ca282 495
bcostm 0:d83f1c8ca282 496
bcostm 0:d83f1c8ca282 497 /**
bcostm 0:d83f1c8ca282 498 * @}
bcostm 0:d83f1c8ca282 499 */
bcostm 0:d83f1c8ca282 500
bcostm 0:d83f1c8ca282 501 /**
bcostm 0:d83f1c8ca282 502 * @}
bcostm 0:d83f1c8ca282 503 */
bcostm 0:d83f1c8ca282 504
bcostm 0:d83f1c8ca282 505 /**
bcostm 0:d83f1c8ca282 506 * @}
bcostm 0:d83f1c8ca282 507 */
bcostm 0:d83f1c8ca282 508
bcostm 0:d83f1c8ca282 509 /**
bcostm 0:d83f1c8ca282 510 * @}
bcostm 0:d83f1c8ca282 511 */
bcostm 0:d83f1c8ca282 512
bcostm 0:d83f1c8ca282 513 /**
bcostm 0:d83f1c8ca282 514 * @}
bcostm 0:d83f1c8ca282 515 */
bcostm 0:d83f1c8ca282 516
bcostm 0:d83f1c8ca282 517 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/