host_cdc_msc_hid sample
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Outline
#include "tusb.h"
#include "bsp/board_api.h"
get_console_inputs(uint8_t *, size_t)
cdc_app_task()
tuh_cdc_rx_cb(uint8_t)
tuh_cdc_mount_cb(uint8_t)
tuh_cdc_umount_cb(uint8_t)
Files
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SourceVuRaspberry Pi Pico SDK and Exampleshost_cdc_msc_hid samplecdc_app.c
 
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/* * The MIT License (MIT) * * Copyright (c) 2022, Ha Thach (tinyusb.org) * * 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. * * This file is part of the TinyUSB stack. *//* ... */ #include "tusb.h" #include "bsp/board_api.h" size_t get_console_inputs(uint8_t* buf, size_t bufsize) { size_t count = 0; while (count < bufsize) { int ch = board_getchar(); if (ch <= 0) break; buf[count] = (uint8_t) ch; count++; }while (count < bufsize) { ... } return count; }{ ... } void cdc_app_task(void) { uint8_t buf[64 + 1]; // +1 for extra null character uint32_t const bufsize = sizeof(buf) - 1; uint32_t count = get_console_inputs(buf, bufsize); buf[count] = 0; // loop over all mounted interfaces for (uint8_t idx = 0; idx < CFG_TUH_CDC; idx++) { if (tuh_cdc_mounted(idx)) { // console --> cdc interfaces if (count) { tuh_cdc_write(idx, buf, count); tuh_cdc_write_flush(idx); }if (count) { ... } }if (tuh_cdc_mounted(idx)) { ... } }for (uint8_t idx = 0; idx < CFG_TUH_CDC; idx++) { ... } }{ ... } //--------------------------------------------------------------------+ // TinyUSB callbacks //--------------------------------------------------------------------+ // Invoked when received new data void tuh_cdc_rx_cb(uint8_t idx) { uint8_t buf[64 + 1]; // +1 for extra null character uint32_t const bufsize = sizeof(buf) - 1; // forward cdc interfaces -> console uint32_t count = tuh_cdc_read(idx, buf, bufsize); buf[count] = 0; printf("%s", (char*) buf); }{ ... } // Invoked when a device with CDC interface is mounted // idx is index of cdc interface in the internal pool. void tuh_cdc_mount_cb(uint8_t idx) { tuh_itf_info_t itf_info = {0}; tuh_cdc_itf_get_info(idx, &itf_info); printf("CDC Interface is mounted: address = %u, itf_num = %u\r\n", itf_info.daddr, itf_info.desc.bInterfaceNumber); #ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM // If CFG_TUH_CDC_LINE_CODING_ON_ENUM is defined, line coding will be set by tinyusb stack // while eneumerating new cdc device cdc_line_coding_t line_coding = {0}; if (tuh_cdc_get_local_line_coding(idx, &line_coding)) { printf(" Baudrate: %" PRIu32 ", Stop Bits : %u\r\n", line_coding.bit_rate, line_coding.stop_bits); printf(" Parity : %u, Data Width: %u\r\n", line_coding.parity, line_coding.data_bits); }if (tuh_cdc_get_local_line_coding(idx, &line_coding)) { ... } /* ... */#else // Set Line Coding upon mounted cdc_line_coding_t new_line_coding = { 115200, CDC_LINE_CODING_STOP_BITS_1, CDC_LINE_CODING_PARITY_NONE, 8 }; tuh_cdc_set_line_coding(idx, &new_line_coding, NULL, 0);/* ... */ #endif }{ ... } // Invoked when a device with CDC interface is unmounted void tuh_cdc_umount_cb(uint8_t idx) { tuh_itf_info_t itf_info = {0}; tuh_cdc_itf_get_info(idx, &itf_info); printf("CDC Interface is unmounted: address = %u, itf_num = %u\r\n", itf_info.daddr, itf_info.desc.bInterfaceNumber); }{ ... }
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