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cdcacm.h
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cdcacm.h
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/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Circuits At Home, LTD
Web : http://www.circuitsathome.com
e-mail : support@circuitsathome.com
*/
#if !defined(__CDCACM_H__)
#define __CDCACM_H__
#include "Usb.h"
#define bmREQ_CDCOUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
#define bmREQ_CDCIN USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
// CDC Subclass Constants
#define CDC_SUBCLASS_DLCM 0x01 // Direct Line Control Model
#define CDC_SUBCLASS_ACM 0x02 // Abstract Control Model
#define CDC_SUBCLASS_TCM 0x03 // Telephone Control Model
#define CDC_SUBCLASS_MCCM 0x04 // Multi Channel Control Model
#define CDC_SUBCLASS_CAPI 0x05 // CAPI Control Model
#define CDC_SUBCLASS_ETHERNET 0x06 // Ethernet Network Control Model
#define CDC_SUBCLASS_ATM 0x07 // ATM Network Control Model
#define CDC_SUBCLASS_WIRELESS_HANDSET 0x08 // Wireless Handset Control Model
#define CDC_SUBCLASS_DEVICE_MANAGEMENT 0x09 // Device Management
#define CDC_SUBCLASS_MOBILE_DIRECT_LINE 0x0A // Mobile Direct Line Model
#define CDC_SUBCLASS_OBEX 0x0B // OBEX
#define CDC_SUBCLASS_ETHERNET_EMU 0x0C // Ethernet Emulation Model
// Communication Interface Class Control Protocol Codes
#define CDC_PROTOCOL_ITU_T_V_250 0x01 // AT Commands defined by ITU-T V.250
#define CDC_PROTOCOL_PCCA_101 0x02 // AT Commands defined by PCCA-101
#define CDC_PROTOCOL_PCCA_101_O 0x03 // AT Commands defined by PCCA-101 & Annex O
#define CDC_PROTOCOL_GSM_7_07 0x04 // AT Commands defined by GSM 7.07
#define CDC_PROTOCOL_3GPP_27_07 0x05 // AT Commands defined by 3GPP 27.007
#define CDC_PROTOCOL_C_S0017_0 0x06 // AT Commands defined by TIA for CDMA
#define CDC_PROTOCOL_USB_EEM 0x07 // Ethernet Emulation Model
// CDC Commands defined by CDC 1.2
#define CDC_SEND_ENCAPSULATED_COMMAND 0x00
#define CDC_GET_ENCAPSULATED_RESPONSE 0x01
// CDC Commands defined by PSTN 1.2
#define CDC_SET_COMM_FEATURE 0x02
#define CDC_GET_COMM_FEATURE 0x03
#define CDC_CLEAR_COMM_FEATURE 0x04
#define CDC_SET_AUX_LINE_STATE 0x10
#define CDC_SET_HOOK_STATE 0x11
#define CDC_PULSE_SETUP 0x12
#define CDC_SEND_PULSE 0x13
#define CDC_SET_PULSE_TIME 0x14
#define CDC_RING_AUX_JACK 0x15
#define CDC_SET_LINE_CODING 0x20
#define CDC_GET_LINE_CODING 0x21
#define CDC_SET_CONTROL_LINE_STATE 0x22
#define CDC_SEND_BREAK 0x23
#define CDC_SET_RINGER_PARMS 0x30
#define CDC_GET_RINGER_PARMS 0x31
#define CDC_SET_OPERATION_PARMS 0x32
#define CDC_GET_OPERATION_PARMS 0x33
#define CDC_SET_LINE_PARMS 0x34
#define CDC_GET_LINE_PARMS 0x35
#define CDC_DIAL_DIGITS 0x36
//Class-Specific Notification Codes
#define NETWORK_CONNECTION 0x00
#define RESPONSE_AVAILABLE 0x01
#define AUX_JACK_HOOK_STATE 0x08
#define RING_DETECT 0x09
#define SERIAL_STATE 0x20
#define CALL_STATE_CHANGE 0x28
#define LINE_STATE_CHANGE 0x29
#define CONNECTION_SPEED_CHANGE 0x2a
// CDC Functional Descriptor Structures
typedef struct {
uint8_t bFunctionLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bmCapabilities;
uint8_t bDataInterface;
} CALL_MGMNT_FUNC_DESCR;
typedef struct {
uint8_t bFunctionLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bmCapabilities;
} ACM_FUNC_DESCR, DLM_FUNC_DESCR, TEL_OPER_MODES_FUNC_DESCR,
TEL_CALL_STATE_REP_CPBL_FUNC_DESCR;
typedef struct {
uint8_t bFunctionLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
uint8_t bRingerVolSteps;
uint8_t bNumRingerPatterns;
} TEL_RINGER_FUNC_DESCR;
typedef struct {
uint32_t dwDTERate; // Data Terminal Rate in bits per second
uint8_t bCharFormat; // 0 - 1 stop bit, 1 - 1.5 stop bits, 2 - 2 stop bits
uint8_t bParityType; // 0 - None, 1 - Odd, 2 - Even, 3 - Mark, 4 - Space
uint8_t bDataBits; // Data bits (5, 6, 7, 8 or 16)
} LINE_CODING;
typedef struct {
uint8_t bmRequestType; // 0xa1 for class-specific notifications
uint8_t bNotification;
uint16_t wValue;
uint16_t wIndex;
uint16_t wLength;
uint16_t bmState; //UART state bitmap for SERIAL_STATE, other notifications variable length
} CLASS_NOTIFICATION;
class ACM;
class CDCAsyncOper {
public:
virtual uint8_t OnInit(ACM *pacm __attribute__((unused))) {
return 0;
};
//virtual void OnDataRcvd(ACM *pacm, uint8_t nbytes, uint8_t *dataptr) = 0;
//virtual void OnDisconnected(ACM *pacm) = 0;
};
/**
* This structure is used to report the extended capabilities of the connected device.
* It is also used to report the current status.
* Regular CDC-ACM reports all as false.
*/
typedef struct {
union {
uint8_t tty;
struct {
bool enhanced : 1; // Do we have the ability to set/clear any features?
// Status and 8th bit in data stream.
// Presence only indicates feature is available, but this isn't used for CDC-ACM.
bool wide : 1;
bool autoflow_RTS : 1; // Has autoflow on RTS/CTS
bool autoflow_DSR : 1; // Has autoflow on DTR/DSR
bool autoflow_XON : 1; // Has autoflow XON/XOFF
bool half_duplex : 1; // Has half-duplex capability.
} __attribute__((packed));
};
} tty_features;
#define ACM_MAX_ENDPOINTS 4
class ACM : public USBDeviceConfig, public UsbConfigXtracter {
protected:
USB *pUsb;
CDCAsyncOper *pAsync;
uint8_t bAddress;
uint8_t bConfNum; // configuration number
uint8_t bControlIface; // Control interface value
uint8_t bDataIface; // Data interface value
uint8_t bNumEP; // total number of EP in the configuration
uint32_t qNextPollTime; // next poll time
volatile bool bPollEnable; // poll enable flag
volatile bool ready; //device ready indicator
tty_features _enhanced_status; // current status
void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
public:
static const uint8_t epDataInIndex; // DataIn endpoint index
static const uint8_t epDataOutIndex; // DataOUT endpoint index
static const uint8_t epInterruptInIndex; // InterruptIN endpoint index
EpInfo epInfo[ACM_MAX_ENDPOINTS];
ACM(USB *pusb, CDCAsyncOper *pasync);
uint8_t SetCommFeature(uint16_t fid, uint8_t nbytes, uint8_t *dataptr);
uint8_t GetCommFeature(uint16_t fid, uint8_t nbytes, uint8_t *dataptr);
uint8_t ClearCommFeature(uint16_t fid);
uint8_t SetLineCoding(const LINE_CODING *dataptr);
uint8_t GetLineCoding(LINE_CODING *dataptr);
uint8_t SetControlLineState(uint8_t state);
uint8_t SendBreak(uint16_t duration);
uint8_t GetNotif(uint16_t *bytes_rcvd, uint8_t *dataptr);
// Methods for receiving and sending data
uint8_t RcvData(uint16_t *nbytesptr, uint8_t *dataptr);
uint8_t SndData(uint16_t nbytes, uint8_t *dataptr);
// USBDeviceConfig implementation
uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
uint8_t Release();
uint8_t Poll();
bool available(void) {
return false;
};
virtual uint8_t GetAddress() {
return bAddress;
};
virtual bool isReady() {
return ready;
};
virtual tty_features enhanced_status(void) {
return _enhanced_status;
};
virtual tty_features enhanced_features(void) {
tty_features rv;
rv.enhanced = false;
rv.autoflow_RTS = false;
rv.autoflow_DSR = false;
rv.autoflow_XON = false;
rv.half_duplex = false;
rv.wide = false;
return rv;
};
virtual void autoflowRTS(bool s __attribute__((unused))) {
};
virtual void autoflowDSR(bool s __attribute__((unused))) {
};
virtual void autoflowXON(bool s __attribute__((unused))) {
};
virtual void half_duplex(bool s __attribute__((unused))) {
};
virtual void wide(bool s __attribute__((unused))) {
};
// UsbConfigXtracter implementation
void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
};
#endif // __CDCACM_H__