RISC-V RVB2601 First Experience--Section 4--Sensor Module Interface

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RISC-V RVB2601 First Experience--Section 4--Sensor Module Interface [Copy link]

 

IO simulated serial port connection sensor module communication test.

Under the premise of tight IO, using IO module to simulate serial port is a very good choice. In the past, IO was always used to simulate IIC SPI.

I optimized the code today and the results are as follows.

timer.c gpio.c These library files can be found in the drivers folder here. Some commonly used libraries can be found.

For serial communication waveform analysis, please refer to here (quoting other people's articles) https://www.cnblogs.com/dongxiaodong/p/14163409.html

Based on the level and cycle time of each bit, I simulate the communication under a certain baud rate. I designed it for 9600bit/s, which is compatible with the sensor module I have.

Jacktang

When working on a 51 single-chip microcomputer, the IO module simulates the serial port in many ways, such as counting and interruption. Which one is the original poster's?

qq4988

Jacktang posted on 2022-3-16 07:47 When working on a 51 single-chip microcomputer, the IO module simulates the serial port in a variety of ways, such as counting and interruption. Which one is the original poster's?

The method of adding interrupts to timers is very simple, but the new IDE has been working on it for a long time.

lugl4313820

Can I learn from your results? I need two serial ports and I’m at a loss.

xinmeng_wit

If the serial port is not enough, you can do this