The connectivity is as follows:
Computer, linux box connected to PGM03 via USB - same as for programming Orangutan.
Computer communication program uses /dev/ttyACM1 - as PGM is used as USB serial port for "talking" to other hardware - interface(s) shown which translates TTL (5v) to 3.3v.
So there for I have Rx and Tx lines from USB suitable for communication with WiFi module being ESP05.
1. This is step 1 - all 3 components shown on circuit diagrams making USB serial wiFi terminal which can be used with any computers comms software to send data over radio waves.
Now I can send and recive data from WiFi network, send commands to WiFi module to set up paramaters and e.t.c....e.t.c .....
I can write program or app for tablet/phone or use like minicom on PC to send and recive data strings. For example send: B=button_A string.
Discard PGM module from the circuit(s) diagrams and connect Tx/Rx lines to Orangutan either SPI pins or D0, D1 pins.
Run program on Orangutan which will send LCD buffer data via WiFi to remote computer. Same like - pressing button A on Orangutan and print response on LCD.
From remote computer I send string which is value of say button_C. This will cuse Orangutan to do exactly what it will do when button C is pressed, and may send LCD data back to remote computer.
- It mouth full description .... Right now I have Orangutan controling telescope AZ drive. Pressing buttons on Orangutan is .... well, OK but when is cold outside much nicer is to saty inside and enjoy view from camera ( Wifi streaming installed on telescope ) on 50" 4k TV screen .
Jumping telescope from star to star is also much easier using tablet from comfortable arm chair .... don't you think so ?
At the moment I am having issues with ESP05 module itself, for some reason I am not getting respons to AT commands. It could be blown up Tx pin. Getting few more modules from different supplies ......
I hope it clarifies the story a little.
Thanks for your time, kind regards Kris