Build me an embedded software for the card Teensy 4 or 4.1

Job ID: 32027475

Budget: €250 – €750 EUR

I need serial UART, SPI, Oled screen, sd card, 2 leds
I want many assigments between some bytes from INPUTs of UART and a series of bytes in hex to OUTPUT of UART
In Output there is a time which separates bytes. For exemple an Input of 0xC2 0x54 0x14 will call a series of bytes 0x9F 0x54 0x43 0x09 0x46 0x62. (The byte 0x09 in the middle is the time in ms between the bytes).
A series of the bytes can be more than 30KB. The assigments many hundrends. So maybe these series of bytes must been in file format and inside a microSD card. The output must be in realtime without latency
I need some processing before output to the UART. This is only the beginning of the project. I need the programming in C or ARDUINO. Iwould like to can change my code in my preferences. Maybe a User Interface it will be very good. To make my assigments and other futures.
Thank you