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Fix USB driver.

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This commit is contained in:
Jeremy Drake
2019-10-07 16:04:14 +09:00
committed by NIIBE Yutaka
parent 4bde2ae1fc
commit 8e55209f33
2 changed files with 6 additions and 2 deletions
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5
ChangeLog
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@@ -1,3 +1,8 @@
2019-10-07 Jeremy Drake <jeremy@drastrom.science>
* mcu/usb-st-common.c (usb_lld_init): Move BTABLE initialization
after clearing ISTR register.
2019-09-04 NIIBE Yutaka <gniibe@fsij.org>
When it was exactly 64-byte, two ZLPs were sent wrongly.

3
mcu/usb-st-common.c
View File

@@ -235,10 +235,9 @@ usb_lld_init (struct usb_dev *dev, uint8_t feature)
USB->CNTR = CNTR_FRES;
USB->CNTR = 0;
USB->BTABLE = 0;
/* Clear Interrupt Status Register, and enable interrupt for USB */
USB->ISTR = 0;
USB->BTABLE = 0;
USB->CNTR = (CNTR_CTRM | CNTR_OVRM | CNTR_ERRM
| CNTR_WKUPM | CNTR_SUSPM | CNTR_RESETM);
}