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fix copy error #2

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Merged
Eirenliel merged 1 commit into from
Oct 24, 2025
Merged

fix copy error #2

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10 changes: 10 additions & 0 deletions src/usb/usb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,16 @@ void usb_init(bool cdc_only) {
}

void usb_teardown(void) {
// Wait for transfers to finish. This works around an issue wherein we
// disconnect while there are still pipelined transfers going.
// This prevents Windows error 0x800701B1 when copying UF2 firmware.
// See: https://github.com/adafruit/Adafruit_nRF52_Bootloader/issues/120
unsigned int i;
for (i = 0; i < 100; i++) {
tud_task();
NRFX_DELAY_MS(1);
}

// Simulate an disconnect which cause pullup disable, USB perpheral disable and hclk disable
tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_REMOVED);
}
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