For about 10 months now Colin Riley has set about the task of designing his own CPU using VHDL, “Because, I can! Why not? I’ll learn a load of stuff!”
I started writing in TPU assembly the various code areas I’d need to interface with ESP8266. They were mainly string operations over the UART – so, things like SendString, RecieveString, and ExpectString, where the function waits until it matches a string sequence received from the UART. The code and data strings needed for a very simple test is well over 1KB which was a lot of code for this. I created various test benches and the code eventually passed those tests in the simulator.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.