NUCLEO-F429ZI SPI1 & SPI3 parallel

[Stebuson]

Hi
I have a NUCLEO-F429ZI board, use PlatformIO and need two SPI Busses. So I initialised and used SPI1 and SPI3 as follows:
const SPISettings spi_mot_settings(5000000, MSBFIRST, SPI_MODE3);
const SPISettings spi_enc_settings(2600000, MSBFIRST, SPI_MODE3);
SPIClass SPI_1(D11, D12, D13); // SPI1 mosi, miso, sclk
SPIClass SPI_3(D22, D25, D23); // SPI3 mosi, miso, sclk
SPI_1.begin();
SPI_3.begin();
SPI_1.beginTransaction(spi_mot_settings);
SPI_3.beginTransaction(spi_enc_settings);
But it worked not right. Both transfers were visible on both busses.

I got it running with the following:
SPIClass SPI_3(pinNametoDigitalPin(PB_5_ALT1), pinNametoDigitalPin(PB_4_ALT1), pinNametoDigitalPin(PB_3_ALT1)); // SPI3 mosi, miso, sclk; (D22, D25, D23)

Does it have to be so complicated or is there an easier way?

[fpistm]

SPIClass SPI_3(PB5_ALT1, PB4_ALT1, PB3_ALT1); // SPI3 mosi, miso, sclk; (D22, D25, D23)

[Stebuson]

Thank you. It works.

I had only tested
SPIClass SPI_3(PB_5_ALT1, PB_4_ALT1, PB_3_ALT1);
but it won't work

[fpistm]

PY_n_ALT1 is PinName while PYn_ALT1 is pin number. Pin number is used for all Standard Arduino API (equivalent to Dx, x).