To address this and other hangups, [Sebastian] has the ESP8266 control the PIC’s reset pin so that the two are always in sync. ... ESP8266, NodeMCU, PIC 18 MCU, samsung, spy.

As usual I’ll be using a NodeMCU board (I really did order a lot of them) which uses an ESP8266, but there’s no reason this would be difficult to achieve on an Arduino-based device.