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/*
* Copyright (c) 2022, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_cdc_acm.h"
const char *stop_name[] = { "1", "1.5", "2" };
const char *parity_name[] = { "N", "O", "E", "M", "S" };
static int cdc_acm_class_interface_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
USB_LOG_DBG("CDC Class request: "
"bRequest 0x%02x\r\n",
setup->bRequest);
struct cdc_line_coding line_coding;
bool dtr, rts;
uint8_t intf_num = LO_BYTE(setup->wIndex);
switch (setup->bRequest) {
case CDC_REQUEST_SET_LINE_CODING:
/*******************************************************************************/
/* Line Coding Structure */
/*-----------------------------------------------------------------------------*/
/* Offset | Field | Size | Value | Description */
/* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
/* 4 | bCharFormat | 1 | Number | Stop bits */
/* 0 - 1 Stop bit */
/* 1 - 1.5 Stop bits */
/* 2 - 2 Stop bits */
/* 5 | bParityType | 1 | Number | Parity */
/* 0 - None */
/* 1 - Odd */
/* 2 - Even */
/* 3 - Mark */
/* 4 - Space */
/* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
/*******************************************************************************/
memcpy(&line_coding, *data, 7);
USB_LOG_DBG("Set intf:%d linecoding <%d %d %s %s>\r\n",
intf_num,
(unsigned int)line_coding.dwDTERate,
line_coding.bDataBits,
parity_name[line_coding.bParityType],
stop_name[line_coding.bCharFormat]);
usbd_cdc_acm_set_line_coding(busid, intf_num, &line_coding);
break;
case CDC_REQUEST_SET_CONTROL_LINE_STATE:
dtr = (setup->wValue & 0x0001);
rts = (setup->wValue & 0x0002);
USB_LOG_DBG("Set intf:%d DTR 0x%x,RTS 0x%x\r\n",
intf_num,
dtr,
rts);
usbd_cdc_acm_set_dtr(busid, intf_num, dtr);
usbd_cdc_acm_set_rts(busid, intf_num, rts);
break;
case CDC_REQUEST_GET_LINE_CODING:
usbd_cdc_acm_get_line_coding(busid, intf_num, &line_coding);
memcpy(*data, &line_coding, 7);
*len = 7;
USB_LOG_DBG("Get intf:%d linecoding %d %d %d %d\r\n",
intf_num,
(unsigned int)line_coding.dwDTERate,
line_coding.bCharFormat,
line_coding.bParityType,
line_coding.bDataBits);
break;
case CDC_REQUEST_SEND_BREAK:
usbd_cdc_acm_send_break(busid, intf_num);
break;
default:
return -1;
}
return 0;
}
struct usbd_interface *usbd_cdc_acm_init_intf(uint8_t busid, struct usbd_interface *intf)
{
(void)busid;
intf->class_interface_handler = cdc_acm_class_interface_request_handler;
intf->class_endpoint_handler = NULL;
intf->vendor_handler = NULL;
intf->notify_handler = NULL;
return intf;
}
__WEAK void usbd_cdc_acm_set_line_coding(uint8_t busid, uint8_t intf, struct cdc_line_coding *line_coding)
{
(void)busid;
(void)intf;
(void)line_coding;
}
__WEAK void usbd_cdc_acm_get_line_coding(uint8_t busid, uint8_t intf, struct cdc_line_coding *line_coding)
{
(void)busid;
(void)intf;
line_coding->dwDTERate = 2000000;
line_coding->bDataBits = 8;
line_coding->bParityType = 0;
line_coding->bCharFormat = 0;
}
__WEAK void usbd_cdc_acm_set_dtr(uint8_t busid, uint8_t intf, bool dtr)
{
(void)busid;
(void)intf;
(void)dtr;
}
__WEAK void usbd_cdc_acm_set_rts(uint8_t busid, uint8_t intf, bool rts)
{
(void)busid;
(void)intf;
(void)rts;
}
__WEAK void usbd_cdc_acm_send_break(uint8_t busid, uint8_t intf)
{
(void)busid;
(void)intf;
}
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