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usb: Only enable the SOF interrupt if user_callback_sof is given.

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Otherwise we get 1 kHz of SOF interrupts even if we don't need them.

Originally reported by Uwe in https://github.com/libopencm3/libopencm3/pull/274
but BuFran provided a reworked implementation.
This commit is contained in:
Frantisek Burian
2014-12-19 00:53:21 +01:00
committed by Karl Palsson
parent 13004f81ee
commit 0cc0134f21
4 changed files with 14 additions and 4 deletions
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6
lib/usb/usb_fx07_common.c
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@@ -326,6 +326,12 @@ void stm32fx07_poll(usbd_device *usbd_dev)
}
REBASE(OTG_GINTSTS) = OTG_FS_GINTSTS_SOF;
}
if (usbd_dev->user_callback_sof) {
BBIO_PERIPH(OTG_FS_GINTMSK, OTG_FS_GINTMSK_SOFM) = 1;
} else {
BBIO_PERIPH(OTG_FS_GINTMSK, OTG_FS_GINTMSK_SOFM) = 0;
}
}
void stm32fx07_disconnect(usbd_device *usbd_dev, bool disconnected)