PMOD maxsonar

[Stanislav]

Hello

I have some questions about UART interfacing of 'Pmod MAXSONAR' part. Datasheet says that the UART package consist of 5 bytes: start byte(ASCII 'R'), three data bytes and stop byte (ASCII '13').

1. Isn`t it  6 bytes package? Because ASCII character '13' has 2 bytes. Do we count start byte (ASCII 'R') in that case?

2. What is the order in data bytes? Is it   __'R' Data0 Data1 Data2 '13'__   or  __'R' Data2 Data1 Data0 '13'__  (here two versions of uart packages are presented)? 

[artvvb]

Hi @Stanislav, welcome to the forum!

ASCII character 13 in this case refers to the carriage return character '\r', rather than the string "13". The most significant digit should be transmitted first so that a straightforward UART passthrough to a serial console prints the data in human-readable form.

Thanks,

Arthur

[Stanislav]

Thank you for the provided infomation

Edited April 19, 2023 by Stanislav