External SPI is disabled on fmuv5?

sergbokh · April 11, 2019, 8:06am

Hi,

Holybro Pixhawk4 has an external SPI connector, but looking at fmuv5 hwdef there are two external SPI reserved but both are disabled by default

github.com

ArduPilot/ardupilot/blob/006583d8120d6f61746a1577d03cbdbaaa1821b6/libraries/AP_HAL_ChibiOS/hwdef/fmuv5/hwdef.dat#L61


# SPI2 - FRAM
PI1 SPI2_SCK SPI2
PI2 SPI2_MISO SPI2
PI3 SPI2_MOSI SPI2


# SPI4 - sensors2
PE2 SPI4_SCK SPI4
PE13 SPI4_MISO SPI4
PE6 SPI4_MOSI SPI4


# SPI5 - external1 (disabled to save DMA channels)
# PF7 SPI5_SCK SPI5
# PF8 SPI5_MISO SPI5
# PF9 SPI5_MOSI SPI5


# SPI6 - external2 (disabled to save DMA channels)
# PG13 SPI6_SCK SPI6
# PG12 SPI6_MISO SPI6
# PB5 SPI6_MOSI SPI6


# sensor CS

Should I just uncomment these lines to get external SPI enabled for the pixhawk 4?
And what “(disabled to save DMA channels)” means? Will enabling hits the performance somehow?

moralkerim · August 12, 2024, 12:10pm

Hello, do you have any update on this?