Category: serial-port

compare hexadecimal values java

Post author By user user
Post date August 29, 2021
Categories In core, Java, serial-port, xmodem
3 Comments on compare hexadecimal values java

Duplicate: Compare hexadecimal and decimal values I’m implementing x-modem protocol in java, I’m reading serialport and storing in byte array of size 1024. then I have converted data to string I’m getting 133 bytes in a packet,problem is I’m not enable to compare hexadecimal value in string and also in bytearray. I’ve to find SOH […]

CRC calculation in Java

Post author By user user
Post date August 29, 2021
Categories In core, crc, Java, serial-port, xmodem
4 Comments on CRC calculation in Java

I’m reading a file from serialport using x-modem protocol and 133 bytes packet. I’m reading in that 1 byte is SOH 2 byte packet number 3 byte nagative of packet number next 128 bytes data 2 bytes CRC sent from other side. I have to calculate CRC of 128 bytes data and 2 bytes crc […]