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trezor-firmware/core/embed/extmod/modtrezorio/modtrezorio-webusb.h

133 lines
4.7 KiB

/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/// class WebUSB:
/// """
/// USB WebUSB interface configuration.
/// """
typedef struct _mp_obj_WebUSB_t {
mp_obj_base_t base;
usb_webusb_info_t info;
} mp_obj_WebUSB_t;
/// def __init__(
/// self,
/// iface_num: int,
/// ep_in: int,
/// ep_out: int,
/// subclass: int = 0,
/// protocol: int = 0,
/// polling_interval: int = 1,
/// max_packet_len: int = 64,
/// ) -> None:
/// """
/// """
STATIC mp_obj_t mod_trezorio_WebUSB_make_new(const mp_obj_type_t *type,
size_t n_args, size_t n_kw,
const mp_obj_t *args) {
STATIC const mp_arg_t allowed_args[] = {
{MP_QSTR_iface_num,
MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_INT,
{.u_int = 0}},
{MP_QSTR_ep_in,
MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_INT,
{.u_int = 0}},
{MP_QSTR_ep_out,
MP_ARG_REQUIRED | MP_ARG_KW_ONLY | MP_ARG_INT,
{.u_int = 0}},
{MP_QSTR_subclass, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0}},
{MP_QSTR_protocol, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0}},
{MP_QSTR_polling_interval, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1}},
{MP_QSTR_max_packet_len, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 64}},
};
mp_arg_val_t vals[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, args, MP_ARRAY_SIZE(allowed_args),
allowed_args, vals);
const mp_int_t iface_num = vals[0].u_int;
const mp_int_t ep_in = vals[1].u_int;
const mp_int_t ep_out = vals[2].u_int;
const mp_int_t subclass = vals[3].u_int;
const mp_int_t protocol = vals[4].u_int;
const mp_int_t polling_interval = vals[5].u_int;
const mp_int_t max_packet_len = vals[6].u_int;
CHECK_PARAM_RANGE(iface_num, 0, 32)
CHECK_PARAM_RANGE(ep_in, 0, 255)
CHECK_PARAM_RANGE(ep_out, 0, 255)
CHECK_PARAM_RANGE(subclass, 0, 255)
CHECK_PARAM_RANGE(protocol, 0, 255)
CHECK_PARAM_RANGE(polling_interval, 1, 255)
CHECK_PARAM_RANGE(max_packet_len, 64, 64)
mp_obj_WebUSB_t *o = m_new_obj(mp_obj_WebUSB_t);
o->base.type = type;
o->info.rx_buffer = m_new(uint8_t, max_packet_len);
o->info.iface_num = (uint8_t)(iface_num);
o->info.ep_in = (uint8_t)(ep_in);
o->info.ep_out = (uint8_t)(ep_out);
o->info.subclass = (uint8_t)(subclass);
o->info.protocol = (uint8_t)(protocol);
o->info.polling_interval = (uint8_t)(polling_interval);
o->info.max_packet_len = (uint8_t)(max_packet_len);
return MP_OBJ_FROM_PTR(o);
}
/// def iface_num(self) -> int:
/// """
/// Returns the configured number of this interface.
/// """
STATIC mp_obj_t mod_trezorio_WebUSB_iface_num(mp_obj_t self) {
mp_obj_WebUSB_t *o = MP_OBJ_TO_PTR(self);
return MP_OBJ_NEW_SMALL_INT(o->info.iface_num);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mod_trezorio_WebUSB_iface_num_obj,
mod_trezorio_WebUSB_iface_num);
/// def write(self, msg: bytes) -> int:
/// """
/// Sends message using USB WebUSB (device) or UDP (emulator).
/// """
STATIC mp_obj_t mod_trezorio_WebUSB_write(mp_obj_t self, mp_obj_t msg) {
mp_obj_WebUSB_t *o = MP_OBJ_TO_PTR(self);
mp_buffer_info_t buf;
mp_get_buffer_raise(msg, &buf, MP_BUFFER_READ);
ssize_t r = usb_webusb_write(o->info.iface_num, buf.buf, buf.len);
return MP_OBJ_NEW_SMALL_INT(r);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(mod_trezorio_WebUSB_write_obj,
mod_trezorio_WebUSB_write);
STATIC const mp_rom_map_elem_t mod_trezorio_WebUSB_locals_dict_table[] = {
{MP_ROM_QSTR(MP_QSTR_iface_num),
MP_ROM_PTR(&mod_trezorio_WebUSB_iface_num_obj)},
{MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mod_trezorio_WebUSB_write_obj)},
};
STATIC MP_DEFINE_CONST_DICT(mod_trezorio_WebUSB_locals_dict,
mod_trezorio_WebUSB_locals_dict_table);
STATIC const mp_obj_type_t mod_trezorio_WebUSB_type = {
{&mp_type_type},
.name = MP_QSTR_WebUSB,
.make_new = mod_trezorio_WebUSB_make_new,
.locals_dict = (void *)&mod_trezorio_WebUSB_locals_dict,
};