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USB: implement USB reset by setting the on-board pull-up on D+ low

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This commit is contained in:
Kévin Redon
2018-06-17 22:31:21 +02:00
committed by Harald Welte
parent 4136c242a8
commit f5869d4a59
3 changed files with 18 additions and 7 deletions
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10
firmware/libcommon/source/usb.c
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@@ -603,11 +603,17 @@ static const USBDDriverDescriptors driverDescriptors = {
void SIMtrace_USB_Initialize(void)
{
/* Signal USB reset by disabling the pull-up on USB D+ for at least 10 ms */
const Pin usb_dp_pullup = PIN_USB_PULLUP;
PIO_Configure(&usb_dp_pullup, 1);
PIO_Set(&usb_dp_pullup);
mdelay(15);
PIO_Clear(&usb_dp_pullup);
// Get std USB driver
USBDDriver *pUsbd = USBD_GetDriver();
TRACE_DEBUG(".");
// Initialize standard USB driver
USBDDriver_Initialize(pUsbd, &driverDescriptors, 0); // Multiple interface settings not supported
USBD_Init();