This fixes the USB endpoint get status functions; previously the (wrong) assumptions were the following:
active was toggled depending on whether a transaction was currently ongoing on the endpoint e.g., if the endpoint is "busy." What is actually requested is if this endpoint is enabled at all. Therefore, we check the enabled flag in the endpoint control register.
stalled was toggled by the device itself, although this property is completely controlled by the host via the SET and CLEAR feature requests. Therefore, we check the stalled flag in the endpoint buffer control register.
fpoussin
commented
1 year ago
This fixes the USB endpoint get status functions; previously the (wrong) assumptions were the following:
activewas toggled depending on whether a transaction was currently ongoing on the endpoint e.g., if the endpoint is "busy." What is actually requested is if this endpoint is enabled at all. Therefore, we check theenabledflag in the endpoint control register.stalledwas toggled by the device itself, although this property is completely controlled by the host via the SET and CLEAR feature requests. Therefore, we check thestalledflag in the endpoint buffer control register.