#637 – CH32V003…fun! with CNLohr

Welcome to the show, CNLohr of the YouTube channel of the same name! CNLohr has been working on projects and a library for the ch32v003, the $0.10 RISC V part Dave has made a video about that part, using the official toolchain from MounRiver How far will you take the chip? Moving from knowing the arm instruction set to the RISC V instruction set The benefits of knowing assembly The CH32V003 is a RISC V part in the low end space made by WCH. CN thinks it’s about eqiuvalent to an AVR You can buy a dev board on Tindie (this is the one Dave and Chris have) Compiler tooling is done for you AVR GCC While discussing Espressif entering the market the way in which they did, CN said, “There’s only going to be one of these in all of computing” Community reversing esp8266 using a virtual machine that had a leaked toolchain on it. Compared to cc2500 / mediatek / realtek ESP8266 without an RTOS “nonOS SDK“ lwip and wifi stack Community port of FreeRTOS onto the ESP8266 CN worked on the “NoSDK 8266“ It didn’t have the WiFi enabled which meant timing wasn’t critical and he could overclock it to 380 MHz Minecraft on a microscope slide Ethernet on an AVR Other people in this space igor plug lwusb is massive (relative to the space on the CH32V003) What about the support burden of writing things yourself? Chris made a comparision to college USB on CH32v003 CNLohr already had hardware on hand for decoding and debugging the USB stack He livestreamed the development! Chris said he was not sure he could livestream, but CN said that the audience acts like rubber ducks and pair programming ESPUSB vusb on avr Does communicty work like this have an influence on the market? Padouk 3-8 cent micro Grainuum library (later figured out it was written by past guest xobs!) lufa / tinyus