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The following commit(s) were added to refs/heads/master by this push:
new ef0c191e2 hw/usb/tinyusb/pic32mz: Enable interrupts when OS is not
started
ef0c191e2 is described below
commit ef0c191e2d5374a488be1018dec52ca9ff6a0c8c
Author: Jerzy Kasenberg <[email protected]>
AuthorDate: Mon Oct 19 22:55:03 2026 +0200
hw/usb/tinyusb/pic32mz: Enable interrupts when OS is not started
When TinyUSB is started without OS scheduling (e.g. USB DFU in
bootloader triggered by boot pin) os_start() is never called, so
interrupts stay globally disabled on PIC32 (Status.IE is 0 after
reset, unlike Cortex-M where interrupts are enabled out of reset).
USB interrupt was never serviced, device did not enumerate and
bootloader was stuck in tud_task() loop.
Enable interrupts in tinyusb_hardware_init() when OS_SCHEDULING is 0.
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Jerzy Kasenberg <[email protected]>
---
hw/usb/tinyusb/pic32mz/src/pic32mz.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/usb/tinyusb/pic32mz/src/pic32mz.c
b/hw/usb/tinyusb/pic32mz/src/pic32mz.c
index 743f5bf66..981710579 100644
--- a/hw/usb/tinyusb/pic32mz/src/pic32mz.c
+++ b/hw/usb/tinyusb/pic32mz/src/pic32mz.c
@@ -50,4 +50,11 @@ tinyusb_hardware_init(void)
USBCRCONbits.PHYIDEN = 0;
USBCRCONbits.USBIDVAL = 1;
USBCRCONbits.USBIDOVEN = 1;
+#if !MYNEWT_VAL(OS_SCHEDULING)
+ /*
+ * OS is not started (e.g. DFU in bootloader) so interrupts were not
+ * enabled by os_start(). Without them USB interrupt is never serviced.
+ */
+ __builtin_enable_interrupts();
+#endif
}
