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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"
#include "app.h"
#ifdef ESP_PLATFORM
#define CDC_STACK_SIZE 2048
#else
#define CDC_STACK_SIZE (3*configMINIMAL_STACK_SIZE/2)
#endif
//--------------------------------------------------------------------+
// MACRO TYPEDEF CONSTANT ENUM DECLARATION
//--------------------------------------------------------------------+
#if configSUPPORT_STATIC_ALLOCATION
StackType_t cdc_stack[CDC_STACK_SIZE];
StaticTask_t cdc_taskdef;
#endif
static void cdc_app_task(void* param);
void cdc_app_init(void) {
#if configSUPPORT_STATIC_ALLOCATION
(void) xTaskCreateStatic(cdc_app_task, "cdc", CDC_STACK_SIZE, NULL, configMAX_PRIORITIES-2, cdc_stack, &cdc_taskdef);
#else
(void) xTaskCreate(cdc_app_task, "cdc", CDC_STACK_SIZE, NULL, configMAX_PRIORITIES-2, NULL);
#endif
}
// helper
static size_t console_read(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++;
}
return count;
}
static void cdc_app_task(void* param) {
(void) param;
uint8_t buf[64 + 1]; // +1 for extra null character
uint32_t const bufsize = sizeof(buf) - 1;
while (1) {
uint32_t count = console_read(buf, bufsize);
buf[count] = 0;
if (count) {
// loop over all mounted interfaces
for (uint8_t idx = 0; idx < CFG_TUH_CDC; idx++) {
if (tuh_cdc_mounted(idx)) {
// console --> cdc interfaces
tuh_cdc_write(idx, buf, count);
tuh_cdc_write_flush(idx);
}
}
}
vTaskDelay(1);
}
}
//--------------------------------------------------------------------+
// 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);
}
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
// CFG_TUH_CDC_LINE_CODING_ON_ENUM must be defined for line coding is set by tinyusb in enumeration
// otherwise you need to call tuh_cdc_set_line_coding() first
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);
}
#endif
}
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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