hello everyone, i am trying to find out checksum for my serial communication using NI VISA. I am sending 1 byte data, 1 byte checksum of that data over UART communications... i would liek to save just the data to a file w/o the checksum, the algo i would like to use is init a counter to 0, read 1 byte data using NI VISA read, change the increment the counter to 1 read next byte using VISA read, this shud be the checksum sent my micro-controller, if checksum is correct, send an ACK to uC, remove the checksum byte, save only the data byte... can anyone suggest me logic/snapshot of how to achieve this? Thanks,

LabVIEW

how to calculate checksum for serial communication

LabVIEW has no internal buffer or clock and the pc's buffer is emptied when it is read so there is no way it will read double data. Must be a problem in your code but since you did not attach it...?

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LabVIEW

how to calculate checksum for serial communication

Re: how to calculate checksum for serial communication