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