mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-23 14:58:09 +00:00
106 lines
3.9 KiB
C
106 lines
3.9 KiB
C
/*
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* Copyright (c) Pavol Rusnak, SatoshiLabs
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*
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* Licensed under TREZOR License
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* see LICENSE file for details
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*/
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#include <string.h>
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#include <unistd.h>
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#include "usb.h"
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#define TOUCH_IFACE (255)
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#define POLL_READ (0x0000)
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#define POLL_WRITE (0x0100)
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#define CHECK_PARAM_RANGE(value, minimum, maximum) \
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if (value < minimum || value > maximum) { \
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mp_raise_ValueError(#value " is out of range"); \
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}
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/// def poll(ifaces: Iterable[int], list_ref: List, timeout_us: int) -> bool:
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/// '''
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/// Wait until one of `ifaces` is ready to read or write (using masks
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// `io.POLL_READ` and `io.POLL_WRITE`) and assign the result into
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/// `list_ref`:
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///
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/// `list_ref[0]` - the interface number, including the mask
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/// `list_ref[1]` - for touch event, tuple of (event_type, x_position, y_position)
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/// - for USB read event, received bytes
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///
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/// If timeout occurs, False is returned, True otherwise.
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/// '''
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STATIC mp_obj_t mod_trezorio_poll(mp_obj_t ifaces, mp_obj_t list_ref, mp_obj_t timeout_us) {
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mp_obj_list_t *ret = MP_OBJ_TO_PTR(list_ref);
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if (!MP_OBJ_IS_TYPE(list_ref, &mp_type_list) || ret->len < 2) {
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mp_raise_TypeError("invalid list_ref");
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}
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const mp_uint_t timeout = mp_obj_get_int(timeout_us);
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const mp_uint_t deadline = mp_hal_ticks_us() + timeout;
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mp_obj_iter_buf_t iterbuf;
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for (;;) {
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mp_obj_t iter = mp_getiter(ifaces, &iterbuf);
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mp_obj_t item;
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while ((item = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
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const mp_uint_t i = mp_obj_int_get_truncated(item);
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const mp_uint_t iface = i & 0x00FF;
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const mp_uint_t mode = i & 0xFF00;
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if (iface == TOUCH_IFACE) {
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const uint32_t evt = touch_read();
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if (evt) {
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mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(3, NULL));
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tuple->items[0] = MP_OBJ_NEW_SMALL_INT((evt >> 24) & 0xFFU); // event type
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tuple->items[1] = MP_OBJ_NEW_SMALL_INT((evt >> 12) & 0xFFFU); // x position
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tuple->items[2] = MP_OBJ_NEW_SMALL_INT(evt & 0xFFFU); // y position
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ret->items[0] = MP_OBJ_NEW_SMALL_INT(i);
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ret->items[1] = MP_OBJ_FROM_PTR(tuple);
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return mp_const_true;
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}
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} else
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if (mode == POLL_READ) {
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if (sectrue == usb_hid_can_read(iface)) {
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uint8_t buf[64];
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int len = usb_hid_read(iface, buf, sizeof(buf));
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if (len > 0) {
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ret->items[0] = MP_OBJ_NEW_SMALL_INT(i);
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ret->items[1] = mp_obj_new_bytes(buf, len);
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return mp_const_true;
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}
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} else if (sectrue == usb_webusb_can_read(iface)) {
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uint8_t buf[64];
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int len = usb_webusb_read(iface, buf, sizeof(buf));
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if (len > 0) {
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ret->items[0] = MP_OBJ_NEW_SMALL_INT(i);
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ret->items[1] = mp_obj_new_bytes(buf, len);
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return mp_const_true;
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}
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}
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} else
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if (mode == POLL_WRITE) {
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if (sectrue == usb_hid_can_write(iface)) {
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ret->items[0] = MP_OBJ_NEW_SMALL_INT(i);
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ret->items[1] = mp_const_none;
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return mp_const_true;
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} else if (sectrue == usb_webusb_can_write(iface)) {
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ret->items[0] = MP_OBJ_NEW_SMALL_INT(i);
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ret->items[1] = mp_const_none;
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return mp_const_true;
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}
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}
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}
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if (mp_hal_ticks_us() >= deadline) {
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break;
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} else {
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MICROPY_EVENT_POLL_HOOK
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}
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}
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return mp_const_false;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(mod_trezorio_poll_obj, mod_trezorio_poll);
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