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src/usb-cdc-vport.c

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+/*
+ * This file is included by usb_prop.c to provide Virtual COM port feature
+ */
+
+/* Original is ../Virtual_COM_Port/usb_prop.c by STMicroelectronics */
+/* Chopped and modified for Gnuk */
+
+#include "usb-cdc.h"
+
+/* Original copyright notice is following: */
+/******************** (C) COPYRIGHT 2010 STMicroelectronics ********************
+* File Name          : usb_prop.c
+* Author             : MCD Application Team
+* Version            : V3.1.1
+* Date               : 04/07/2010
+* Description        : All processing related to Virtual Com Port Demo
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+typedef struct
+{
+  uint32_t bitrate;
+  uint8_t format;
+  uint8_t paritytype;
+  uint8_t datatype;
+} LINE_CODING;
+
+static LINE_CODING linecoding = {
+  115200, /* baud rate*/
+  0x00,   /* stop bits-1*/
+  0x00,   /* parity - none*/
+  0x08    /* no. of bits 8*/
+};
+
+static uint8_t *Virtual_Com_Port_GetLineCoding(uint16_t Length)
+{
+  if (Length == 0)
+    {
+      pInformation->Ctrl_Info.Usb_wLength = sizeof(linecoding);
+      return NULL;
+    }
+
+  return (uint8_t *)&linecoding;
+}
+
+static uint8_t *Virtual_Com_Port_SetLineCoding(uint16_t Length)
+{
+  if (Length == 0)
+    {
+      pInformation->Ctrl_Info.Usb_wLength = sizeof(linecoding);
+      return NULL;
+    }
+
+  return (uint8_t *)&linecoding;
+}
+
+static RESULT
+Virtual_Com_Port_Data_Setup (uint8_t RequestNo)
+{
+  uint8_t    *(*CopyRoutine)(uint16_t);
+
+  CopyRoutine = NULL;
+
+  if (RequestNo == USB_CDC_REQ_GET_LINE_CODING)
+    {
+      if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT))
+	CopyRoutine = Virtual_Com_Port_GetLineCoding;
+    }
+  else if (RequestNo == USB_CDC_REQ_SET_LINE_CODING)
+    {
+      if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT))
+	CopyRoutine = Virtual_Com_Port_SetLineCoding;
+    }
+
+  if (CopyRoutine == NULL)
+    return USB_UNSUPPORT;
+
+  pInformation->Ctrl_Info.CopyData = CopyRoutine;
+  pInformation->Ctrl_Info.Usb_wOffset = 0;
+  (*CopyRoutine) (0);		/* Set Ctrl_Info.Usb_wLength */
+
+  return USB_SUCCESS;
+}
+
+static RESULT
+Virtual_Com_Port_NoData_Setup (uint8_t RequestNo)
+{
+  if (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)
+      && RequestNo == USB_CDC_REQ_SET_CONTROL_LINE_STATE)
+    /* Do nothing and success  */
+    return USB_SUCCESS;
+
+  return USB_UNSUPPORT;
+}