I'm always wondering why don't you use STM32F103RF? I understand it's $0.7 more expensive, but 3 times more flash and 2 times more RAM could save a lot of efforts for you...
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Gordon,
I'm always wondering why don't you use STM32F103RF? I understand it's $0.7 more expensive, but 3 times more flash and 2 times more RAM could save a lot of efforts for you...
http://www.aliexpress.com/item/Free-Shipping-Original-STM32F103RFT6-franchise-ST32F-SCM/1467537996.html