Lightweight STM32 HAL based driver for 4-digit LED display, based on TM1650 IC.
Features
The driver supports common numeric display ranges:
- (-999 : 999) - signed three-digit integer
- (-99.9 : 99.9) - signed float, 1 decimal place
- (-9.99 : 9.99) - signed float, 2 decimal places
- (0.0 : 999.9) - unsigned float, 1 decimal place
Additional features:
- Configurable brightness (8 levels)
- STM32 HAL integration
- FreeRTOS-compatible (tested on Nucleo L476RG devboard)
Hardware requirements
- TM1650-based 4-digit, 7-segment display
- I2C interface with external pull-up resistors (4.7kOhm) for SCL and SDA lines.
Demo
- (-99.9 : 99.9) - signed float, 1 decimal place
- Brightness change
The repository example project (CMSIS V2) based on Nucleo L476RG devboard
This project is licensed under the MIT License. See the LICENSE file for details.