Hey Travis,
Thanks for the reply. I’ve managed to figure out the problem. It has nothing to do with the COM port. After 40+ total hours troubleshooting this issue I’ve managed to discover that my version of the NcdSerialI2C.js driver doesn’t appear to support I2C Firmware version set 6. After inserting version 6 checks to the respective functions, i.e.,
if(this.version == 3 || this.version == 6)
The node-red node started connecting. As such, all I/O capabilities of the device seen to now be working properly. Can y’all please double check the operation of your ncd MCP23008 node-red node against an actual I2CIO4R4_MCP23008 board and update the ncd-red-comm module so that I don’t have to use my own hacked version of the driver?
-Rod