Trivial USB CDC (Virtual COM port) demo, for Microstick II board, generated with MCC.
WORK IN PROGRESS! I have troubles with my USB cable (Device Manager reporting faulty device - when I move cable a bit it suddenly starts working)...
Requirements:
- insert PIC24FJ64GB002 into Microstick II socket
- PGM Switch should be in position
A- PGC1, PGD1 - additionally you need
USB breakout cable
Need to connect:
USB Cable
Color Signal Microstick II
P1 (or U5) and/or J6
==============================================
BLACK GND -> PIN 8 also PIN 1 on J6
GREEN D+ -> PIN 21 also PIN 4 on J6
WHITE D- -> PIN 22 also PIN 5 on J6
RED +5V -> PIN 15 - Vbus (sensing)
Additionaly:
Vdd from TP1 to PIN23 Vusb (supply for on-chip USB)
For safety you may also connect resistor <= 100 Ohm between USB +5V and PIC PIN15 - VBus. Originally I thought that it was cause of unreliable operation but it was later dismissed.
Please see https://ww1.microchip.com/downloads/en/DeviceDoc/39721b.pdf
figure Figure 27-5: Self-Power Only
Software used:
- MPLAB X IDE v5.45
- MCC plugin 4.0.2
- XC16 v1.70
- DFP:
PIC24F-GA-GB_DFP 1.4.141
Installing Device Driver - in Device Manager:
- Other Devices ->
Product Name - Update driver...
- Use driver from sub-directory:
mcc_generated_files\usb\utilities\Readme Signed Driver Package.txt - I by accident use this - from MLA library:
mla\v2018_11_26\apps\usb\device\cdc_basic\utilities\inf - Device Must change to: Ports ->
USB Serial Port (COMx)
Now fire up any terminal on COMx port (for example putty.exe)
and when you press any ASCII character it should output +1 character
(for example b for typed a). For details please
see:
mcc_generated_files\usb\example_mcc_usb_cdc.c