Read Sensor

How to run it

Before running this example, you have launch the docker container. You can find the instructions in the Docker page of the documentation.

When you are in the docker container, you have to go to the messy directory:

cd /messy/messy/

Then we can run python:

python3 messy.py -f codegen/pulp_open.json -a /messy/examples/read_sensor

The parameters are:

1. -f is the file name of the chosen system configuration
2. -a is the path of the folder of the application

Explanation

This example demonstrates how to read from a sensor's memory using different methods: direct byte access, memcpy, and accessing a custom struct. It initializes a memory region and then reads values from it, printing them to the console.

You should see output similar to this:

...
Messy uint8 sensor test, there should be 256 iters

[uint8] 0 : 0
[uint8] 1 : 1
...
[uint8] 255 : 255


Messy memcpy sensor test, there should be 2 iters

[memcpy]    0 : 0
[memcpy]    128 : 128


Messy examples with a struct, there should be 128 iters

[struct]    0 : 0
[struct]    1 : 2
[struct]    2 : 4
...
[struct]    127 : 254