69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2021 Raspberry Pi (Trading) Ltd.
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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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*/
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#include <pico/stdlib.h>
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#include "tusb.h"
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#include "picoprobe_config.h"
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void cdc_uart_init(void) {
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gpio_set_function(PICOPROBE_UART_TX, GPIO_FUNC_UART);
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gpio_set_function(PICOPROBE_UART_RX, GPIO_FUNC_UART);
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uart_init(PICOPROBE_UART_INTERFACE, PICOPROBE_UART_BAUDRATE);
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}
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void cdc_task(void) {
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uint8_t rx_buf[CFG_TUD_CDC_RX_BUFSIZE];
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uint8_t tx_buf[CFG_TUD_CDC_TX_BUFSIZE];
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// Consume uart fifo regardless even if not connected
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uint rx_len = 0;
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while(uart_is_readable(PICOPROBE_UART_INTERFACE) && (rx_len < sizeof(rx_buf))) {
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rx_buf[rx_len++] = uart_getc(PICOPROBE_UART_INTERFACE);
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}
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if (tud_cdc_connected()) {
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// Do we have anything to display on the host's terminal?
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if (rx_len) {
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for (uint i = 0; i < rx_len; i++) {
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tud_cdc_write_char(rx_buf[i]);
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}
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tud_cdc_write_flush();
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}
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if (tud_cdc_available()) {
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// Is there any data from the host for us to tx
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uint tx_len = tud_cdc_read(tx_buf, sizeof(tx_buf));
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uart_write_blocking(PICOPROBE_UART_INTERFACE, tx_buf, tx_len);
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}
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}
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}
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void tud_cdc_line_coding_cb(uint8_t itf, cdc_line_coding_t const* line_coding) {
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picoprobe_info("New baud rate %d\n", line_coding->bit_rate);
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uart_init(PICOPROBE_UART_INTERFACE, line_coding->bit_rate);
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}
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