Thanks. Found it here.
http://www.aliexpress.com/store/product ... 85134.html
Nowadays these Chinese manufactures really keen on cutting cost. I get a recent Arduino Uno clone only to find they are also using ceramic resonate for the 328p, but when it is to the Atmega8U2, they used a crystal. They seems to know what they are doing
Search found 3 matches
- Tue Aug 12, 2014 5:01 am
- Forum: V-USB
- Topic: usbFunctionWrite incorrect length, need help
- Replies: 5
- Views: 7467
- Mon Aug 11, 2014 4:57 pm
- Forum: V-USB
- Topic: usbFunctionWrite incorrect length, need help
- Replies: 5
- Views: 7467
Re: usbFunctionWrite incorrect length, need help
Totally make sense sir. Yes the board is using a murata 3pin ceramic oscillator. I added CRC code and did DBG1 on every CRC error, it seems communication failure always occurred immediately after CRC error. I'll find another board with crystal and test again. Thanks! Does the 328p board use a crysta...
- Mon Aug 11, 2014 4:10 am
- Forum: V-USB
- Topic: usbFunctionWrite incorrect length, need help
- Replies: 5
- Views: 7467
usbFunctionWrite incorrect length, need help
Hi, I'm trying V-USB on an ATmega328p board, using INT0 on D- (for USB suspend detection). My project is modified from hid-data example, but I changed HID report size to 18 bytes. I wanted to test USB reliability so in the firmware side I simply copy the SET_REPORT 18 bytes buffer to a static buffer...