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pico-mcp2515
2024-03-08
Raspberry Pi Pico MCP2515 CAN-Bus Interface Library
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Raspberry Pi Pico MCP2515 CAN interface library
This Raspberry Pi Pico library is a ported & optimized version of the magnificent library arduino-mcp2515 by autowp.
Optimization
This library was optimized to use SPI transfer of multiple bytes in a single function call. This is contrary to the original code where for loop was heavily used. Theese optimizations might seem insignificant as they shave only few microseconds each time but they surely add up. If the only goal of the microcontroller is to poll CAN-Bus frames, the speedup can reach roughly from 20 to 40% depending on frame byte count!
Benchmark used with frame polling:
| Frame bytes | Before [µs] | After [µs] | Speedup [%] |
|---|---|---|---|
| 0 | 35 | 29 | 22.8 |
| 1 | 37 | 29 | 21.6 |
| 2 | 39 | 30 | 30.0 |
| 3 | 41 | 31 | 32.3 |
| 4 | 43 | 32 | 34.4 |
| 5 | 45 | 33 | 36.4 |
| 6 | 47 | 34 | 38.2 |
| 7 | 49 | 35 | 40.0 |
| 8 | 51 | 36 | 41.7 |
| Average | 43 | 31.9 | 33.0 |
This software is written by loovee (luweicong@seeed.cc) for seeed studio, updated by Dmitry (https://github.com/autowp) and then ported by Piotr Adamczyk https://github.com/adamczykpiotr and is licensed under The MIT License. Check LICENSE.md for more information.
Contributing to this software is warmly welcomed. You can do this basically by forking, committing modifications and then pulling requests (follow the links above for operating guide). Adding change log and your contact into file header is encouraged. Thanks for your contribution.
Seeed Studio is an open hardware facilitation company based in Shenzhen, China. Benefiting from local manufacture power and convenient global logistic system, we integrate resources to serve new era of innovation. Seeed also works with global distributors and partners to push open hardware movement
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Reviews
2
(1)
user_8KgLYXjB
2025-04-17
The pico-mcp2515 by adamczykpiotr is an exceptional application for CAN communication. As a loyal user of MCP applications, I find the seamless integration and robust performance of the pico-mcp2515 remarkably impressive. It's easy to use and well-documented, which facilitates quick setup and efficient operation. Highly recommended for anyone needing reliable CAN communication support! Check it out at https://github.com/adamczykpiotr/pico-mcp2515.