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extmod/machine_usb_device: Add support for Python USB devices.

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This new machine-module driver provides a "USBDevice" singleton object and
a shim TinyUSB "runtime" driver that delegates the descriptors and all of
the TinyUSB callbacks to Python functions.  This allows writing arbitrary
USB devices in pure Python.  It's also possible to have a base built-in
USB device implemented in C (eg CDC, or CDC+MSC) and a Python USB device
added on top of that.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
This commit is contained in:
Angus Gratton
2023-11-23 09:48:41 +11:00
committed by Damien George
parent 43904acea8
commit 9d0d262be0
14 changed files with 1384 additions and 118 deletions
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5
extmod/modmachine.h
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@@ -213,6 +213,7 @@ extern const mp_obj_type_t machine_signal_type;
extern const mp_obj_type_t machine_spi_type;
extern const mp_obj_type_t machine_timer_type;
extern const mp_obj_type_t machine_uart_type;
extern const mp_obj_type_t machine_usbd_type;
extern const mp_obj_type_t machine_wdt_type;
#if MICROPY_PY_MACHINE_SOFTI2C
@@ -230,6 +231,10 @@ extern const mp_machine_spi_p_t mp_machine_soft_spi_p;
extern const mp_obj_dict_t mp_machine_spi_locals_dict;
#endif
#if MICROPY_HW_ENABLE_USB_RUNTIME_DEVICE
extern const mp_obj_type_t machine_usb_device_type;
#endif
#if defined(MICROPY_MACHINE_MEM_GET_READ_ADDR)
uintptr_t MICROPY_MACHINE_MEM_GET_READ_ADDR(mp_obj_t addr_o, uint align);
#endif