How to interface Character LCD screen Via I2C to STM32 MCU: Part2 || PCF8574 ||BluePill ||Black Pill

Character LCD Module Interfacing to STM32 MCU via I2C using PCF8574 I2C Shift register Module:

Github Code:

LCD screen via I2C PCF8574 Part 1:

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Debugging Techniques in Firmware development:

Getting Started with STM8s:

STM32WB55 Getting Started:

Bare Metal Coding on ARM Cortex STM32 F103:

Bare Metal Coding for 8-bit AVR MCU:

Sensors and Module interfacing:

Embedded C and Firmware Development:

Internet of Things(IoT):
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[AS-zsjw]

Good to see that you have made tutorial videos on I2C and LCD with I2C. i really appreciate your efforts.

[madeautomate]

You will definitely reach heights, millionaire in making!

[AugustineAriola]

I just want to know how to address my I2C PCF8574 LCD converter module. Is 0x21 or 0x3F ? I want to use the module with Arduino project

[BeMuslimOnly]

Is the I2C LCD module compatable with 3.3v microcontroller??

[electrodynamo]

Hi bro I have developed bare metal driver for stm32 (gpio, spi, uart and i2c) I want to get into embedded job what should I learn next

[ShivamKumar-kyvm]

helloo can u tell me what is 18, 19, 20, 21 line of your code doing in gb_lcd_i2c file, unable to understand clearly . As far as i know we mainly write on LCD and do not read, the function master send byte in line 20 is MCU sending data in this case and in line 19 address_send_w what does this doing ??? very confusing can u pls explain

[MN-keyj]

How to debug I2C? In cube IDE. The blue pill. Doesn't allow it.