nwxt appr. to canusbrelay

F0-nolib/usbcan_relay/Readme.md

@@ -1,10 +1,21 @@
-Simple code for CAN/USB development board
-Simultaneous work of USB CDC (PL2303 emulation) and CAN
+CAN/USB management of 2 relays and some other things
+===================================================
+
+The device can also work as USB-CAN converter.
+
+CAN protocol is quite simple. The node receives data to selected CAN ID, transmission done with the 
+ID = CANID + 0x100.
+
 
 Pinout:
-PB0 - LED0 - short blink when message received 
-PB1 - LED1 - shine when line OK
-
-PB8, PB9 - CAN Rx/Tx
-
-PA11. PA12 - USB DM/DP
+- PA0/1 - Relay0/1 
+- PA2..5 - Button0..3 (user buttons)
+- PA6/7 - ADC inputs through resistive divider (0..5 and 0..12V)
+- PA8..10 - PWM0..2 outputs (opendrain through SI2300, 5 or 12V)
+- PA13/14 - SWD; the SWD pin +3.3V connected through 22Ohm resistor
+- PA11. PA12 - USB DM/DP
+- PB0..PB7 - CAN ID 
+- PB8, PB9 - CAN Rx/Tx
+- PB12..15 - LED0..3 outputs (direct outputs without any protection!!!)
+ 
+The pins LEDr0 and LEDr1 are indicated relay works (12V through 2.2kOhm resistor)