I have a device (Is produced by my company). this device have a memory and connected with serial port to my pc.
I read and write by my code into my device. when I read (example 300 byte of data) dont have error. but when I write 300 byte of data to device have error. Indeed I can write data with (Length) 255 byte But when length my data is more than 255 byte dont
write data and return an error
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