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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2022 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "shared-bindings/usb/core/Device.h"
#include "tusb_config.h"
#include "lib/tinyusb/src/host/usbh.h"
#include "py/runtime.h"
#include "shared/runtime/interrupt_char.h"
#include "shared-bindings/usb/core/__init__.h"
#include "shared-module/usb/utf16le.h"
#include "supervisor/shared/tick.h"
bool common_hal_usb_core_device_construct(usb_core_device_obj_t *self, uint8_t device_number) {
if (device_number == 0 || device_number > CFG_TUH_DEVICE_MAX + CFG_TUH_HUB) {
return false;
}
if (!tuh_ready(device_number)) {
return false;
}
self->device_number = device_number;
return true;
}
uint16_t common_hal_usb_core_device_get_idVendor(usb_core_device_obj_t *self) {
uint16_t vid;
uint16_t pid;
tuh_vid_pid_get(self->device_number, &vid, &pid);
return vid;
}
uint16_t common_hal_usb_core_device_get_idProduct(usb_core_device_obj_t *self) {
uint16_t vid;
uint16_t pid;
tuh_vid_pid_get(self->device_number, &vid, &pid);
return pid;
}
STATIC xfer_result_t _get_string_result;
STATIC bool _transfer_done_cb(uint8_t daddr, tusb_control_request_t const *request, xfer_result_t result) {
// Store the result so we stop waiting for the transfer. We don't need the other data for now.
(void)daddr;
(void)request;
_get_string_result = result;
return true;
}
STATIC void _wait_for_callback(void) {
while (!mp_hal_is_interrupted() &&
_get_string_result == 0xff) {
// The background tasks include TinyUSB which will call the function
// we provided above. In other words, the callback isn't in an interrupt.
RUN_BACKGROUND_TASKS;
}
}
STATIC mp_obj_t _get_string(const uint16_t *temp_buf) {
size_t utf16_len = ((temp_buf[0] & 0xff) - 2) / sizeof(uint16_t);
if (utf16_len == 0) {
return mp_const_none;
}
return utf16le_to_string(temp_buf + 1, utf16_len);
}
mp_obj_t common_hal_usb_core_device_get_serial_number(usb_core_device_obj_t *self) {
_get_string_result = 0xff;
uint16_t temp_buf[127];
if (!tuh_descriptor_string_serial_get(self->device_number, 0, temp_buf, MP_ARRAY_SIZE(temp_buf), _transfer_done_cb)) {
return mp_const_none;
}
_wait_for_callback();
return _get_string(temp_buf);
}
mp_obj_t common_hal_usb_core_device_get_product(usb_core_device_obj_t *self) {
_get_string_result = 0xff;
uint16_t temp_buf[127];
if (!tuh_descriptor_string_product_get(self->device_number, 0, temp_buf, MP_ARRAY_SIZE(temp_buf), _transfer_done_cb)) {
return mp_const_none;
}
_wait_for_callback();
return _get_string(temp_buf);
}
mp_obj_t common_hal_usb_core_device_get_manufacturer(usb_core_device_obj_t *self) {
_get_string_result = 0xff;
uint16_t temp_buf[127];
if (!tuh_descriptor_string_manufacturer_get(self->device_number, 0, temp_buf, MP_ARRAY_SIZE(temp_buf), _transfer_done_cb)) {
return mp_const_none;
}
_wait_for_callback();
return _get_string(temp_buf);
}
mp_obj_t common_hal_usb_core_device_write(usb_core_device_obj_t *self, mp_int_t endpoint, const uint8_t *buffer, mp_int_t len, mp_int_t timeout) {
return mp_const_none;
}
mp_obj_t common_hal_usb_core_device_read(usb_core_device_obj_t *self, mp_int_t endpoint, uint8_t *buffer, mp_int_t len, mp_int_t timeout) {
return mp_const_none;
}
xfer_result_t control_result;
STATIC bool _control_complete_cb(uint8_t dev_addr, tusb_control_request_t const *request, xfer_result_t result) {
(void)dev_addr;
(void)request;
control_result = result;
return true;
}
mp_int_t common_hal_usb_core_device_ctrl_transfer(usb_core_device_obj_t *self,
mp_int_t bmRequestType, mp_int_t bRequest,
mp_int_t wValue, mp_int_t wIndex,
uint8_t *buffer, mp_int_t len, mp_int_t timeout) {
// Timeout is in ms.
tusb_control_request_t request = {
.bmRequestType = bmRequestType,
.bRequest = bRequest,
.wValue = wValue,
.wIndex = wIndex,
.wLength = len
};
control_result = XFER_RESULT_STALLED;
bool result = tuh_control_xfer(self->device_number,
&request,
buffer,
_control_complete_cb);
if (!result) {
mp_raise_usb_core_USBError(NULL);
}
uint32_t start_time = supervisor_ticks_ms32();
while (supervisor_ticks_ms32() - start_time < (uint32_t)timeout &&
!mp_hal_is_interrupted() &&
control_result == XFER_RESULT_STALLED) {
// The background tasks include TinyUSB which will call the function
// we provided above. In other words, the callback isn't in an interrupt.
RUN_BACKGROUND_TASKS;
}
if (control_result == XFER_RESULT_STALLED) {
mp_raise_usb_core_USBTimeoutError();
}
if (control_result == XFER_RESULT_SUCCESS) {
return len;
}
return 0;
}
bool common_hal_usb_core_device_is_kernel_driver_active(usb_core_device_obj_t *self, mp_int_t interface) {
// TODO: Implement this when CP natively uses a keyboard.
return false;
}
void common_hal_usb_core_device_detach_kernel_driver(usb_core_device_obj_t *self, mp_int_t interface) {
// TODO: Implement this when CP natively uses a keyboard.
}
void common_hal_usb_core_device_attach_kernel_driver(usb_core_device_obj_t *self, mp_int_t interface) {
// TODO: Implement this when CP natively uses a keyboard.
}
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