/**
@page Demonstrations Demonstrations STM32F446ZE-Nucleo
@verbatim
******************** (C) COPYRIGHT 2017 STMicroelectronics *******************
* @file Demonstrations/readme.txt
* @author MCD Application Team
* @brief Description of STM32F446ZE-Nucleo-144 Demo
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
@endverbatim
@par Demo Description
Demonstration firmware based on STM32Cube. This example helps you to discover
STM32 Cortex-M devices that are plugged onto your STM32 Nucleo board.
At the beginning of the main program the HAL_Init() function is called to reset
all the peripherals, initialize the Flash interface and the systick.
Then the SystemClock_Config() function is used to configure the system clock
(SYSCLK) to run at 180 MHz.
Below you find the sequence to discover the demonstration :
- Check the availability of adafruit 1.8" TFT shield on top of STM32 Nucleo
board. This is done by reading the state of IO PF.03 pin (mapped to JoyStick
available on adafruit 1.8" TFT shield). If the state of PF.03 is high then
the adafruit 1.8" TFT shield is available.
- Adafruit 1.8" TFT shield is not available:
LED2 is toggling with a first frequency equal to ~1Hz.
Pressing User button lets LED2 toggling with a second frequency equal to ~5Hz.
Pressing User button again, changes LED2 toggling frequency to ~10Hz.
This is done in an infinite loop.
- Adafruit 1.8" TFT shield is available:
A menu will be displayed on TFT. Follow instructions below:
- Joystick DOWN to continue menu display
- Choose the desired display mode: Press Joystick DOWN for automatic mode
or Joystick UP for manual mode.
- Manual Mode selected:
Images available on SD Card, are displayed by pressing Joystick RIGHT
to display next image or Joystick LEFT to display previous one.
Pressing long (~1s) Joystick SEL, switches display mode to automatic one.
- Automatic Mode selected:
Images available on SD Card are displayed sequentially in a forever loop.
It is worth noting that the application manages some errors occurred during the
access to uSD card to parse bmp images:
- If SD Card is not FAT formatted, a message will be displayed on TFT.
In this case, format the SD card and put into its root directory the .bmp
files available within the "BMP_128x160" folder under "Utilities/Media/Pictures"
- If the content of the SD card is other than a bitmap file, a message will
be displayed on TFT mentioning that it is not supported.
In this case, put into the SD card's root directory the .bmp
files available within the "BMP_128x160" folder under "Utilities/Media/Pictures"
which are respecting the following criteria:
o Dimensions: 128x160
o Width: 128 pixels
o Height: 160 pixels
o Bit depth: 16
o Item type: BMP file
o The name of the bmp image file must not exceed 11 characters (including
.bmp extension).
@note Care must be taken when using HAL_Delay(), this function provides accurate
delay (in milliseconds) based on variable incremented in SysTick ISR.
This implies that if HAL_Delay() is called from a peripheral ISR process,
then the SysTick interrupt must have higher priority (numerically lower)
than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
@note The application needs to ensure that the SysTick time base is always set to
1 millisecond to have correct HAL operation.
@note The clock setting is configured to have the max product performance (max clock frequency)
so not optimized in term of power consumption.
@par Keywords
Demonstrations, Adafruit, Shield, TFT, Joystick, SD Card, Display
@par Directory contents
- Demonstrations/Inc/stm32f4xx_hal_conf.h HAL configuration file
- Demonstrations/Inc/stm32f4xx_it.h Interrupt handlers header file
- Demonstrations/Inc/main.h Header for main.c module
- Demonstrations/Inc/sd_diskio.h FatFS sd diskio driver header file
- Demonstrations/Inc/fatfs_storage.h Header for fatfs_storage.c module
- Demonstrations/Inc/ffconf.h FAT file system module configuration file
- Demonstrations/Src/stm32f4xx_it.c Interrupt handlers
- Demonstrations/Src/main.c Main program
- Demonstrations/Src/sd_diskio.c FatFS sd diskio driver implementation
- Demonstrations/Src/fatfs_storage.c Storage (FatFs) driver
- Demonstrations/Src/system_stm32f4xx.c STM32F4xx system source file
@par Hardware and Software environment
- This demonstration runs on STM32F446ZE devices.
- This demonstration has been tested with STMicroelectronics NUCLEO-F446ZE Rev.B
boards and can be easily tailored to any other supported device
and development board.
- A SDSC microSD card (capacity up to 8GB), must contain the .bmp files
available within the "BMP_128x160" folder under "Utilities/Media/Pictures"
- Adafruit 1.8" TFT shield must be connected on CN7,CN8, CN9 and CN10 Arduino connectors,
for more details please refer to UM1726.
- Make sure the SB146, SB121 are closed and the SB174, SB165, SB122 are opened on the NUCLEO-446ZE board (bottom side)
For more details about the adafruit 1.8" TFT shield, please visit:
http://www.adafruit.com/blog/2012/04/26/new-product-adafruit-1-8-18-bit-color-tft-shield-wmicrosd-and-joystick/
@par How to use it ?
In order to make the program work, you must do the following :
- Open your preferred toolchain
- Rebuild all files and load your image into target memory
- Run the demonstration
*/
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