STM32746G-Discovery BSP User Manual: stm32746g_discovery_ts.c File Reference

This file provides a set of functions needed to manage the Touch Screen on STM32746G-Discovery board.

Author:

MCD Application Team

Version:

V2.0.0

Date:

30-December-2016

   1. How To use this driver:
   --------------------------
      - This driver is used to drive the touch screen module of the STM32746G-Discovery
        board on the RK043FN48H-CT672B 480x272 LCD screen with capacitive touch screen.
      - The FT5336 component driver must be included in project files according to
        the touch screen driver present on this board.
   
   2. Driver description:
   ---------------------
     + Initialization steps:
        o Initialize the TS module using the BSP_TS_Init() function. This 
          function includes the MSP layer hardware resources initialization and the
          communication layer configuration to start the TS use. The LCD size properties
          (x and y) are passed as parameters.
        o If TS interrupt mode is desired, you must configure the TS interrupt mode
          by calling the function BSP_TS_ITConfig(). The TS interrupt mode is generated
          as an external interrupt whenever a touch is detected. 
          The interrupt mode internally uses the IO functionalities driver driven by
          the IO expander, to configure the IT line.
     
     + Touch screen use
        o The touch screen state is captured whenever the function BSP_TS_GetState() is 
          used. This function returns information about the last LCD touch occurred
          in the TS_StateTypeDef structure.
        o If TS interrupt mode is used, the function BSP_TS_ITGetStatus() is needed to get
          the interrupt status. To clear the IT pending bits, you should call the 
          function BSP_TS_ITClear().
        o The IT is handled using the corresponding external interrupt IRQ handler,
          the user IT callback treatment is implemented on the same external interrupt
          callback.
  

Attention:

© COPYRIGHT(c) 2016 STMicroelectronics

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.

Definition in file stm32746g_discovery_ts.c.