kopia lustrzana https://github.com/micropython/micropython
121 wiersze
4.2 KiB
C
121 wiersze
4.2 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Patrick Van Oosterwijck
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "usb_serial_jtag.h"
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#if CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG
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#include "hal/usb_serial_jtag_ll.h"
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#include "esp_intr_alloc.h"
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#include "soc/periph_defs.h"
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#include "freertos/portmacro.h"
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#define USB_SERIAL_JTAG_BUF_SIZE (64)
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static DRAM_ATTR portMUX_TYPE rx_mux = portMUX_INITIALIZER_UNLOCKED;
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static uint8_t rx_buf[USB_SERIAL_JTAG_BUF_SIZE];
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static volatile bool terminal_connected = false;
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static void usb_serial_jtag_handle_rx(void) {
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if (xPortInIsrContext()) {
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portENTER_CRITICAL_ISR(&rx_mux);
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} else {
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portENTER_CRITICAL(&rx_mux);
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}
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size_t req_len = ringbuf_free(&stdin_ringbuf);
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if (req_len > USB_SERIAL_JTAG_BUF_SIZE) {
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req_len = USB_SERIAL_JTAG_BUF_SIZE;
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}
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size_t len = usb_serial_jtag_ll_read_rxfifo(rx_buf, req_len);
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for (size_t i = 0; i < len; ++i) {
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if (rx_buf[i] == mp_interrupt_char) {
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mp_sched_keyboard_interrupt();
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} else {
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ringbuf_put(&stdin_ringbuf, rx_buf[i]);
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}
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}
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if (xPortInIsrContext()) {
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portEXIT_CRITICAL_ISR(&rx_mux);
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} else {
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portEXIT_CRITICAL(&rx_mux);
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}
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}
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static void usb_serial_jtag_isr_handler(void *arg) {
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uint32_t flags = usb_serial_jtag_ll_get_intsts_mask();
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if (flags & USB_SERIAL_JTAG_INTR_SOF) {
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usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SOF);
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}
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if (flags & USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT) {
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usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT);
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usb_serial_jtag_handle_rx();
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mp_hal_wake_main_task_from_isr();
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}
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}
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void usb_serial_jtag_init(void) {
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usb_serial_jtag_ll_clr_intsts_mask(USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT |
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USB_SERIAL_JTAG_INTR_SOF);
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usb_serial_jtag_ll_ena_intr_mask(USB_SERIAL_JTAG_INTR_SERIAL_OUT_RECV_PKT |
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USB_SERIAL_JTAG_INTR_SOF);
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ESP_ERROR_CHECK(esp_intr_alloc(ETS_USB_SERIAL_JTAG_INTR_SOURCE, ESP_INTR_FLAG_LEVEL1,
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usb_serial_jtag_isr_handler, NULL, NULL));
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}
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void usb_serial_jtag_poll_rx(void) {
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if (usb_serial_jtag_ll_rxfifo_data_available() && ringbuf_free(&stdin_ringbuf)) {
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usb_serial_jtag_handle_rx();
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}
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}
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void usb_serial_jtag_tx_strn(const char *str, size_t len) {
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while (len) {
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size_t l = len;
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if (l > USB_SERIAL_JTAG_PACKET_SZ_BYTES) {
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l = USB_SERIAL_JTAG_PACKET_SZ_BYTES;
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}
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TickType_t start_tick = xTaskGetTickCount();
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while (!usb_serial_jtag_ll_txfifo_writable()) {
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TickType_t now_tick = xTaskGetTickCount();
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if (!terminal_connected || now_tick > (start_tick + pdMS_TO_TICKS(200))) {
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terminal_connected = false;
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return;
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}
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}
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terminal_connected = true;
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l = usb_serial_jtag_ll_write_txfifo((const uint8_t *)str, l);
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usb_serial_jtag_ll_txfifo_flush();
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str += l;
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len -= l;
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}
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}
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#endif // CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG
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