Tx and RX for the MCP2562

Question

Tx and RX for the MCP2562

mchampio opened this issue 4 years ago · 4 comments

I just want to ask a really stupid question.
The MCP2562 and MCP2515 combination according to their data sheets use SPI (MOSI, MISO,SCK CLK)
In your code and examples you talk about Tx and Rx. Is that because your code does not use a Bus Controller and instead talks directly to the MCP2562

Answer 1 · 2020-05-22T04:21:39.000Z

Can you point, which code or example you mean.

Answer 2 · 2020-05-22T04:41:14.000Z

in NMEA2000_esp32.h you have
gpio_num_t TxPin;
gpio_num_t RxPin;

Answer 3 · 2020-05-22T04:52:13.000Z

ESP32 has internal CAN controller and its tx/rx can be set almost any pin. Those pins you connect directly to the rx/tx to MCP2562. Also DUE and Teensies has internal CAN, but with fixed pins.

If you use MCP2515, then you use SPI.

Answer 4 · 2020-05-22T05:08:01.000Z

Thank you for the quick and comprehensive reply