libmcp2515 - MCP2515 CAN library
================================
A small, platform-independent C99 library for the MCP2515 CAN controller.

Features
--------
* Platform independent
* Easy to port
* Full error codes on every call
* Tiny footprint
* Freestanding

Application Interface
---------------------
* Setup
  - mcp2515_reset: Reset device
  - mcp2515_config: Set bit timing
  - mcp2515_mode: Change operation mode
* Transfer
  - mcp2515_tx: Transmit a frame
  - mcp2515_rx: Receive a frame
* Filter
  - mcp2515_filter: Configure filter
  - mcp2515_mask: Configure mask
* Utility
  - mcp2515_prep_cnf1: Compute config value 1
  - mcp2515_prep_cnf2: Compute config value 2
  - mcp2515_prep_cnf3: Compute config value 3

SPI Interface
-------------
This interface must be implemented by the user for their target platform.

* Register Access
  - mcp2515_spi_write: Write one byte to a register
  - mcp2515_spi_write_buf: Write multiple bytes starting at a register
  - mcp2515_spi_read: Read one byte from a register
  - mcp2515_spi_read_buf: Read multiple bytes starting at a register
  - mcp2515_spi_bitmod: Bit-modify a register
* Transfer
  - mcp2515_spi_load_tx_buf: Load transmit buffer
  - mcp2515_spi_rts: Request to send
  - mcp2515_spi_read_rx_buf: Read receive buffer
* Status Queries
  - mcp2515_spi_status: Read status
  - mcp2515_spi_rx_status: Read RX status
* Reset
  - mcp2515_spi_reset: Send reset command

Ports
-----
The `port` directory contains platform-specific SPI backends and build systems.
* esp-idf
* libfe310

License
-------
See LICENSE file for copyright and license details.