101 lines
3.5 KiB
C
101 lines
3.5 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2021 Damien P. George
|
|
*
|
|
* 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 "py/runtime.h"
|
|
#include "py/mphal.h"
|
|
#include "usb.h"
|
|
|
|
#if CONFIG_USB_OTG_SUPPORTED
|
|
|
|
#include "esp_timer.h"
|
|
#ifndef NO_QSTR
|
|
#include "tinyusb.h"
|
|
#include "tusb_cdc_acm.h"
|
|
#endif
|
|
|
|
#define CDC_ITF TINYUSB_CDC_ACM_0
|
|
|
|
static uint8_t usb_rx_buf[CONFIG_TINYUSB_CDC_RX_BUFSIZE];
|
|
|
|
static void usb_callback_rx(int itf, cdcacm_event_t *event) {
|
|
// TODO: what happens if more chars come in during this function, are they lost?
|
|
for (;;) {
|
|
size_t len = 0;
|
|
esp_err_t ret = tinyusb_cdcacm_read(itf, usb_rx_buf, sizeof(usb_rx_buf), &len);
|
|
if (ret != ESP_OK) {
|
|
break;
|
|
}
|
|
if (len == 0) {
|
|
break;
|
|
}
|
|
for (size_t i = 0; i < len; ++i) {
|
|
if (usb_rx_buf[i] == mp_interrupt_char) {
|
|
mp_sched_keyboard_interrupt();
|
|
} else {
|
|
ringbuf_put(&stdin_ringbuf, usb_rx_buf[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void usb_init(void) {
|
|
// Initialise the USB with defaults.
|
|
tinyusb_config_t tusb_cfg = {0};
|
|
ESP_ERROR_CHECK(tinyusb_driver_install(&tusb_cfg));
|
|
|
|
// Initialise the USB serial interface.
|
|
tinyusb_config_cdcacm_t acm_cfg = {
|
|
.usb_dev = TINYUSB_USBDEV_0,
|
|
.cdc_port = CDC_ITF,
|
|
.rx_unread_buf_sz = 256,
|
|
.callback_rx = &usb_callback_rx,
|
|
#ifdef MICROPY_HW_USB_CUSTOM_RX_WANTED_CHAR_CB
|
|
.callback_rx_wanted_char = &MICROPY_HW_USB_CUSTOM_RX_WANTED_CHAR_CB,
|
|
#endif
|
|
#ifdef MICROPY_HW_USB_CUSTOM_LINE_STATE_CB
|
|
.callback_line_state_changed = &MICROPY_HW_USB_CUSTOM_LINE_STATE_CB,
|
|
#endif
|
|
#ifdef MICROPY_HW_USB_CUSTOM_LINE_CODING_CB
|
|
.callback_line_coding_changed = &MICROPY_HW_USB_CUSTOM_LINE_CODING_CB,
|
|
#endif
|
|
};
|
|
ESP_ERROR_CHECK(tusb_cdc_acm_init(&acm_cfg));
|
|
|
|
}
|
|
|
|
void usb_tx_strn(const char *str, size_t len) {
|
|
// Write out the data to the CDC interface, but only while the USB host is connected.
|
|
uint64_t timeout = esp_timer_get_time() + (uint64_t)(MICROPY_HW_USB_CDC_TX_TIMEOUT_MS * 1000);
|
|
while (tud_cdc_n_connected(CDC_ITF) && len && esp_timer_get_time() < timeout) {
|
|
size_t l = tinyusb_cdcacm_write_queue(CDC_ITF, (uint8_t *)str, len);
|
|
str += l;
|
|
len -= l;
|
|
tud_cdc_n_write_flush(CDC_ITF);
|
|
}
|
|
}
|
|
|
|
#endif // CONFIG_USB_OTG_SUPPORTED
|