code for STM32 microcontroller

Using KAMELEON-STM32L4 model STM32L496ZGT6.I am looking for a programmer who is experienced with C language to develop code for an STM32 microcontroller. The specific function of the code is to count up to 9999 and then count down to 0 when the OK button has been pressed. sing the STM32 Hardware Abstraction Layer (HAL) library is forbidden. Reading/writing of the microcontroller's GPIO registers should be implemented with pointers. The application uses all four digits of the 7-segment display to implement a counter from 0 to 9999. • The application should use the multiplexing technique (quick switching on and off of the appropriate digits of the display combined with a change of value). • The counting direction should be controlled with the OK button of the joystick. If the button is released, the application counts up, and when the maximum is reached, it returns to 0. If the button is pressed, the application counts down, and when it comes to 0, it returns to the maximum. • Displayed value should change approximately every 1 second. • It must be ensured that pressing the button does not affect the counting speed. Skills and experience needed: - Proficiency in C programming language - Experience with STM32 microcontrollers - Familiarity with 7-segment display and button peripherals This project does not require interaction with any additional peripherals or sensors. The code will only interact with a 7-segment display and a button. If you have the necessary skills and experience, please bid on this project. Thank you.