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/**
@page LCD_SegmentsDrive LCD Glass example
@verbatim
******************************************************************************
* @file LCD/LCD_SegmentsDrive/readme.txt
* @author MCD Application Team
* @brief Description of the LCD Glass example
******************************************************************************
*
* Copyright (c) 2019-2021 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 Example Description
How to drive a LCD Glass using STM32WBxx hal driver.
This example demonstrate how to display a string on the LCD, use the blinking function of the LCDGlass peripheral.
In addition, some API are provided to easily display letters, numbers and available battery bars.
The P-NUCLEO-WB55 kit does not embeds a LCDGlass. For this example, a customisation of P-NUCLEO-WB55.Nucleo
board is necessary to reproduce the setup presented in the picture setup.jpg.
The LCD Glass of the following boards can be reused for this setup:
32L476GDISCOVERY: https://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-mpu-eval-tools/stm32-mcu-mpu-eval-tools/stm32-discovery-kits/32l476gdiscovery.html
32L152CDISCOVERY: https://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-mpu-eval-tools/stm32-mcu-mpu-eval-tools/stm32-discovery-kits/32l152cdiscovery.html
It is a LCD with 24 segments and 4 commons able to display 14-segments digits and 4 bars.
The following manual connections are required:
(refer to P-NUCLEO-WB55 schematics (MB1355) for STM32WB55RGVx GPIOs physical connections on Morpho connector)
(refer to 32L152CDISCOVERY (UM1079) for LCDGlass connections and for more information on each segment and common usage)
STM32WB55RGVx LCDGlass
GPIO AF11 PIN FUNCTION
PA1 SEG0 1 LCDSEG0
PA2 SEG1 2 LCDSEG1
PA3 SEG2 3 LCDSEG2
PA6 SEG3 4 LCDSEG3
PA7 SEG4 5 LCDSEG4
PC12 SEG30 /!\ 6 LCDSEG5
PB6 SEG6 7 LCDSEG6
PC10 SEG28 /!\ 8 LCDSEG7
PB4 SEG8 9 LCDSEG8
PC6 SEG24 /!\ 10 LCDSEG9
PB10 SEG10 11 LCDSEG10
PB11 SEG11 12 LCDSEG11
PB9 COM3 13 LCDCOM3
PA10 COM2 14 LCDCOM2
PA9 COM1 15 LCDCOM1
PA8 COM0 16 LCDCOM0
PB12 SEG12 17 LCDSEG12
PB13 SEG13 18 LCDSEG13
PB14 SEG14 19 LCDSEG14
PB15 SEG15 20 LCDSEG15
PB8 SEG16 21 LCDSEG16
PA15 SEG17 22 LCDSEG17
PC0 SEG18 23 LCDSEG18
PC1 SEG19 24 LCDSEG19
PC2 SEG20 25 LCDSEG20
PB7 SEG21 26 LCDSEG21
PC4 SEG22 27 LCDSEG22
PC5 SEG23 28 LCDSEG23
MCU PA14 SEG5 cannot be used as multiplexed with JTAG connection.
MCU PA4 SEG5 cannot be used as MCU SEG10 share the same pin on Morpho connector CN10.
=> MCU SEG5 is replaced by MCU SEG30 on Pin PC12 which is directly available on Morpho connector CN10
MCU PB3 SEG7 cannot be used as sharing the same pin as MCU PB13 SEG13 on CN10
=> MCU SEG7 is replaced by MCU SEG28 on Pin PC10 which is directly available on Morpho connector CN10
MCU PB5 SEG9 cannot be used as sharing the same pin as MCU PB15 SEG15 on CN10
=> MCU SEG9 is replaced by MCU SEG24 on Pin PC10 which is directly available on Morpho connector CN10
The following hardware modifications are required on P-NUCLEO-WB55.Nucleo board:
Solder bridge SB5 must be OPEN
Solder bridge SB6 must be CLOSED
You should note that, as the PC10 SEG28 and PC12 SEG30 are used, the LCDGlass peripheral must be configured according to
"COM and SEG multiplexing" chapter from RM0434 for a VFQFPN68 device:
Duty: 1/4
MUX_SEG: 1
@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.
@par Keywords
LCD Glass
@par Directory contents
- LCD/LCD_SegmentsDrive/Inc/stm32wbxx_hal_conf.h HAL configuration file
- LCD/LCD_SegmentsDrive/Inc/stm32wbxx_it.h Interrupt handlers header file
- LCD/LCD_SegmentsDrive/Inc/main.h Header for main.c module
- LCD/LCD_SegmentsDrive/Src/stm32wbxx_it.c Interrupt handlers
- LCD/LCD_SegmentsDrive/Src/main.c Main program
- LCD/LCD_SegmentsDrive/Src/stm32wbxx_hal_msp.c HAL MSP module
- LCD/LCD_SegmentsDrive/Src/system_stm32wbxx.c STM32WBxx system source file
- LCD/LCD_SegmentsDrive/Src/stm32wbxx_nucleo_glass_lcd.c BSP drivers of the LCD Glass
- LCD/LCD_SegmentsDrive/Inc/stm32wbxx_nucleo_glass_lcd.h Header for stm32wbxx_nucleo_glass_lcd.c
@par Hardware and Software environment
- This example runs on STM32WB55xx devices.
- This example has been tested with an STMicroelectronics P-NUCLEO-WB55.Nucleo
board with manual modifications and can be easily tailored to any other supported device
and development board.
@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 example
* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
*/
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