About Louie88

Louie88 · 2025-02-25

Question moved from this thread. Okay, now I can turn off the LCD/Backlight anytime, but I need to turn it back (on) if any part of the LCD Module is touched. I probably need to capture the TOUCH interrupt and turn the backlight on from the interrupt...

Louie88 · 2025-02-20

I would like to turn off the backlight if the LCD module of STM32H747I_DISCO board. I figured out that the PJ12 (LCD_BL_CTRL, PORT = J PIN = 12) probably controls the backlight of the LCD module (from schematics). The "PJ12" is initialized in "main.M...

Louie88 · 2025-02-12

Hi,I had to install STM32 tools on a MacBook Pro 2023 M2. I have a STM32H7474I-Disco board which works fine under Windows 11. When I connect the evaluation board to MacBook it pops-up a window to enable ST-Link driver. I enabled the driver but the us...

Louie88 · 2025-01-31

Hi all,I would like to keep RTC value (and keep the RTC working) during power off of the disco board, so I am planning to cut SB16 (soft bridge) from+3.3V and solder an external CR2032 +V battery to the board. My first questions are:How will I know t...

Louie88 · 2025-01-27

Hi,If I understand right USART1 is used in STM32H747I-DISCO board for VCOM. I could not find any example for my board. I would like to want for an 8-byte host command using:HAL_UART_Receive_IT(&huart1, hostCommand.buffer, 8); Once a command is receiv...

Louie88 · 2025-03-04

Thanks for that!Regards,Louis

Louie88 · 2025-02-25

Thanks mƎALLEm!!! It works fine without soldering anything on the TFT Module, however it sets the BRIGHTNESS of the display and does not turn off the BACKLIGHT. If you run an application from battery then it is a nice feature to turn of the display a...

Louie88 · 2025-02-21

Hi mƎALLEm,Thanks for your valuable note, I think you are right. The R4 is really not assembled in MB166 LCD Module (See the attached microscope image) so the BL_CTRL (PJ12) GPIO output does nothing with the backlight enable pin. It is always connect...

Louie88 · 2025-02-21

Thanks Dor_RH,It is actually done in main.c MX_GPIO_Init() method:I think mƎALLEm is right (see above post). The R4 is really not assembled in MB166 LCD Module (See the attached microscope image) so the BL_CTRL (PJ12) GPIO output does nothing with th...

Louie88 · 2025-02-20

His SofLit,I am sorry for the wrong forum. Yes, I did, please check my original post. I use HAL write pin method.HAL_GPIO_WritePin(GPIOJ, LCD_BL_Pin, GPIO_PIN_SET);Louis

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How to turn on/off backlight of STM32H747I_DISCO board

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Re: How to turn on/off backlight of STM32H747I_DISCO board

Re: How to turn on/off backlight of STM32H747I_DISCO board

Re: How to turn on/off backlight of STM32H747I_DISCO board

Re: How to turn on/off backlight of STM32H747I_DISCO board