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bl_mcu_sdk/examples/usb/usb_cdc_loopback/main.c

175 lines
5.6 KiB
C

/**
* @file main.c
* @brief
*
* Copyright (c) 2021 Bouffalolab team
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
*/
#include "hal_usb.h"
#include "usbd_core.h"
#include "usbd_cdc.h"
#define CDC_IN_EP 0x82
#define CDC_OUT_EP 0x01
#define CDC_INT_EP 0x83
#define USBD_VID 0xFFFF
#define USBD_PID 0xFFFF
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
#define USB_CONFIG_SIZE (9 + CDC_ACM_DESCRIPTOR_LEN)
USB_DESC_SECTION const uint8_t cdc_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x02, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, 0x02),
///////////////////////////////////////
/// string0 descriptor
///////////////////////////////////////
USB_LANGID_INIT(USBD_LANGID_STRING),
///////////////////////////////////////
/// string1 descriptor
///////////////////////////////////////
0x12, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'B', 0x00, /* wcChar0 */
'o', 0x00, /* wcChar1 */
'u', 0x00, /* wcChar2 */
'f', 0x00, /* wcChar3 */
'f', 0x00, /* wcChar4 */
'a', 0x00, /* wcChar5 */
'l', 0x00, /* wcChar6 */
'o', 0x00, /* wcChar7 */
///////////////////////////////////////
/// string2 descriptor
///////////////////////////////////////
0x24, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'B', 0x00, /* wcChar0 */
'o', 0x00, /* wcChar1 */
'u', 0x00, /* wcChar2 */
'f', 0x00, /* wcChar3 */
'f', 0x00, /* wcChar4 */
'a', 0x00, /* wcChar5 */
'l', 0x00, /* wcChar6 */
'o', 0x00, /* wcChar7 */
' ', 0x00, /* wcChar8 */
'C', 0x00, /* wcChar9 */
'D', 0x00, /* wcChar10 */
'C', 0x00, /* wcChar11 */
' ', 0x00, /* wcChar13 */
'D', 0x00, /* wcChar14 */
'E', 0x00, /* wcChar15 */
'M', 0x00, /* wcChar16 */
'O', 0x00, /* wcChar17 */
///////////////////////////////////////
/// string3 descriptor
///////////////////////////////////////
0x16, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'2', 0x00, /* wcChar0 */
'0', 0x00, /* wcChar1 */
'2', 0x00, /* wcChar2 */
'1', 0x00, /* wcChar3 */
'0', 0x00, /* wcChar4 */
'3', 0x00, /* wcChar5 */
'1', 0x00, /* wcChar6 */
'0', 0x00, /* wcChar7 */
'0', 0x00, /* wcChar8 */
'0', 0x00, /* wcChar9 */
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x02,
0x02,
0x01,
0x40,
0x01,
0x00,
0x00
};
void usbd_cdc_acm_bulk_out(uint8_t ep)
{
uint32_t actual_read_length = 0;
uint8_t out_buffer[64];
if (usbd_ep_read(ep, out_buffer, 64, &actual_read_length) < 0) {
USBD_LOG_DBG("Read DATA Packet failed\r\n");
usbd_ep_set_stall(ep);
return;
}
usbd_ep_read(ep, NULL, 0, NULL);
usbd_ep_write(CDC_IN_EP, out_buffer, actual_read_length, NULL);
if (actual_read_length == 64)
usbd_ep_write(CDC_IN_EP, NULL, 0, NULL);
}
void usbd_cdc_acm_bulk_in(uint8_t ep)
{
}
usbd_class_t cdc_class;
usbd_interface_t cdc_cmd_intf;
usbd_interface_t cdc_data_intf;
usbd_endpoint_t cdc_out_ep = {
.ep_addr = CDC_OUT_EP,
.ep_cb = usbd_cdc_acm_bulk_out
};
usbd_endpoint_t cdc_in_ep = {
.ep_addr = CDC_IN_EP,
.ep_cb = NULL
};
struct device *usb_fs;
extern struct device *usb_dc_init(void);
int main(void)
{
bflb_platform_init(0);
usbd_desc_register(cdc_descriptor);
usbd_cdc_add_acm_interface(&cdc_class, &cdc_cmd_intf);
usbd_cdc_add_acm_interface(&cdc_class, &cdc_data_intf);
usbd_interface_add_endpoint(&cdc_data_intf, &cdc_out_ep);
usbd_interface_add_endpoint(&cdc_data_intf, &cdc_in_ep);
usb_fs = usb_dc_init();
if (usb_fs) {
device_control(usb_fs, DEVICE_CTRL_SET_INT, (void *)(USB_EP1_DATA_OUT_IT));
}
while (!usb_device_is_configured()) {
}
while (1) {
}
}