Stm32f030f4p6 firmware for mini serial keyboard with buzzer, inputs and outputs

** Payment released only after finalizing the project and sending firmware to test the operation. I need to send and receive incoming and outgoing information through the serial portal. I already have the hardware developed. 1) When making a combination of 4 keys, I need the combination to be sent via the serial. example: pressing 1111 or 1234 keys If you do not press the 4 keys, wait for 4 seconds for the next key or complete the combination of 4 keys to send to serial, otherwise, he will reset the count and hope to start typing again. example of sending to serial port ELC05 | 1 | 1234 ELC05 | 1 | 1111 ELC05 | 1 | 1243 where ELC05 => Protocol type, 1 => Command type, in this case macro, 1234 number entered on the keyboard 2) I need to receive commands on the serial port to activate the equipment outputs. Example: ELC05 | 2 | 1 | 1 => trigger output 1 ELC05 | 2 | 1 | 0 => Disable output 1 ELC05 | 2 | 2 | 1 => trigger output 2 ELC05 | 2 | 2 | 0 => Disable output 2 The team must respond when the message is successfully executed ELC05 | 0 | 1 IF ANY ERRORS ELC05 | 0 | 0 | ERROR MESSAGE 3) When typing 4444 the keyboard will request a password that will be inside the memory of the tracker, if the password is correct, the tracker should deactivate output 1 and activate again according to the programmed time, and send the message via the serial informing that a password has been used. message to be sent => ELC05 | 3 | 4444 4) When typing 4443 the keypad will request a password that will be inside the memory of the tracker, if the password is correct, the tracker should deactivate output 2 and activate again according to the programmed time, and send the message via the serial informing that a password was used message to be sent => ELC05 | 3 | 4443 5) The keyboard must receive the command for setting the time and password for output 1 and output 2 via the serial port. To exit 1 => ELC05 | 4 | 1 | TIME IN SECONDS => IF 0 DO NOT ACTUATE AGAIN | VALID PASSWORD ONLY DIGIT 1 TO 4 WITH 6 DIGITS TOTAL For Saida2 => ELC05 | 4 | 2 | TIME IN SECONDS => IF 0 DO NOT ACTUATE AGAIN | VALID PASSWORD ONLY DIGIT 1 TO 4 WITH 6 DIGITS TOTAL The team must respond when the message is successfully executed ELC05 | 0 | 1 IF ANY ERRORS ELC05 | 0 | 0 | ERROR MESSAGE 6) I need one of the inputs (INPUT_EXT) to be able to read 3 1-Wire dallas temperature sensors and send every 2 minutes to the serial port if a sensor is installed. (I will remove the transistor from the input to work as 1-Wire) ELC05 | 5 | sensor series = temperature | sensor series = temperature | sensor series = temperature ELC05 | 5 | A3D4C1DD = 24 | A3D2FF = -10 | AFDF32 = 5 speed of the serial 19200. All actions such as pressing the key, entering 4 characters, among others must beep. when not typing all the digits or an error occurs, such as an incorrect password, you should beep longer You can use the stm32f030f4p6 development board. I will inform you the pinout of the inputs and outputs, as well as the pins of the keys 1, 2, 3, 4.