"Playing with the board" + Zhou Hangci's book Chapter 11, Example 1

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"Playing with the board" + Zhou Hangci's book Chapter 11, Example 1 [Copy link]

 

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Chapter 11: Serial Communication Task Design

Data sending:

Data transmission is an active behavior and there is no risk. When a frame of data needs to be sent in several times, due to the real-time operating system

The serial transmission task should not use the query method to complete the transmission process, so as not to waste precious CPU time.

ISR and serial transmission tasks are completed in coordination.

The following is a serial transmission experiment program, which has two tasks (key task and serial transmission task), an ISR (serial transmission task)

interrupt) and a global array of 40 bytes in length. The serial transmission task is created by the key task, and 8 bytes are sent each time.

5 times sent.

Partial schematic diagram:

Main code:

Effect picture:

兰博

Thanks to the host for writing it in detail. I will try it out according to the post someday.