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Topic: How to use the UART ? (Read 498 times) previous topic - next topic


MY system is windows, and my board is arduino mega.
i want to use the uart3(TX3,RX3) to communicate with another component.

my code is:

int buf[]={FF FF 00 07 03 1E 00 02 00 02 D3};
void setup(){


void loop() {

but its said"27: error: exponent has no digits".

What can i do? I am a beginner, and I need the help of yours. Thanks!


You can stick with one post asking a question. Asking more than once will not get more answers.
The art of getting good answers lies in asking good questions.



Your array is pretty messed up for one thing:

int buf[]={FF FF 00 07 03 1E 00 02 00 02 D3};

It needs commas between all the values and if those are HEX byte values then each needs to be in the form of 0xFF, 0xFF, etc.


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