Nobuaki Aoki / Mbed 2 deprecated myBlueUSB_localfix

local fix version of myBlueUSB (http://mbed.org/users/networker/code/myBlueUSB/). - merge deleted files which are required to compile. - enable echo back of received data via RFCOMM.

Dependencies:   AvailableMemory FatFileSystem mbed myUSBHost

rfcomm/RFCOMM.cpp@2:9f25a7fa1a54, 2013-12-08 (annotated)

Committer:
nobukuma
Date:
Sun Dec 08 21:52:09 2013 +0000
Revision:
2:9f25a7fa1a54
Parent:
0:003889bc474f 
???BT??????????????????; ?????????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nobukuma 0:003889bc474f 1 #include "mbed.h"
nobukuma 0:003889bc474f 2 #include "Utils.h"
nobukuma 0:003889bc474f 3 #include "RFCOMM.h"
nobukuma 0:003889bc474f 4
nobukuma 0:003889bc474f 5 // Control field values bit no. 1 2 3 4 5 6 7 8
nobukuma 0:003889bc474f 6 #define BT_RFCOMM_SABM 0x3F // 1 1 1 1 P/F 1 0 0
nobukuma 0:003889bc474f 7 #define BT_RFCOMM_UA 0x73 // 1 1 0 0 P/F 1 1 0
nobukuma 0:003889bc474f 8 #define BT_RFCOMM_DM 0x0F // 1 1 1 1 P/F 0 0 0
nobukuma 0:003889bc474f 9 #define BT_RFCOMM_DM_PF 0x1F
nobukuma 0:003889bc474f 10 #define BT_RFCOMM_DISC 0x53 // 1 1 0 0 P/F 0 1 0
nobukuma 0:003889bc474f 11 #define BT_RFCOMM_UIH 0xEF // 1 1 1 1 P/F 1 1 1
nobukuma 0:003889bc474f 12 #define BT_RFCOMM_UIH_PF 0xFF
nobukuma 0:003889bc474f 13
nobukuma 0:003889bc474f 14 // Multiplexer message types
nobukuma 0:003889bc474f 15 #define BT_RFCOMM_PN_CMD 0x83
nobukuma 0:003889bc474f 16 #define BT_RFCOMM_PN_RSP 0x81
nobukuma 0:003889bc474f 17 #define BT_RFCOMM_TEST_CMD 0x23
nobukuma 0:003889bc474f 18 #define BT_RFCOMM_TEST_RSP 0x21
nobukuma 0:003889bc474f 19 #define BT_RFCOMM_FCON_CMD 0xA3
nobukuma 0:003889bc474f 20 #define BT_RFCOMM_FCON_RSP 0xA1
nobukuma 0:003889bc474f 21 #define BT_RFCOMM_FCOFF_CMD 0x63
nobukuma 0:003889bc474f 22 #define BT_RFCOMM_FCOFF_RSP 0x61
nobukuma 0:003889bc474f 23 #define BT_RFCOMM_MSC_CMD 0xE3
nobukuma 0:003889bc474f 24 #define BT_RFCOMM_MSC_RSP 0xE1
nobukuma 0:003889bc474f 25 #define BT_RFCOMM_RPN_CMD 0x93
nobukuma 0:003889bc474f 26 #define BT_RFCOMM_RPN_RSP 0x91
nobukuma 0:003889bc474f 27 #define BT_RFCOMM_RLS_CMD 0x53
nobukuma 0:003889bc474f 28 #define BT_RFCOMM_RLS_RSP 0x51
nobukuma 0:003889bc474f 29 #define BT_RFCOMM_NSC_RSP 0x11
nobukuma 0:003889bc474f 30
nobukuma 0:003889bc474f 31 // FCS calc
nobukuma 0:003889bc474f 32 #define BT_RFCOMM_CODE_WORD 0xE0 // pol = x8+x2+x1+1
nobukuma 0:003889bc474f 33 #define BT_RFCOMM_CRC_CHECK_LEN 3
nobukuma 0:003889bc474f 34 #define BT_RFCOMM_UIHCRC_CHECK_LEN 2
nobukuma 0:003889bc474f 35
nobukuma 0:003889bc474f 36 #define NR_CREDITS 1
nobukuma 0:003889bc474f 37 #define INITIAL_CREDITS 1 //0...7
nobukuma 0:003889bc474f 38
nobukuma 0:003889bc474f 39 #define DCD (1<<7) //DV data carrier detect
nobukuma 0:003889bc474f 40 #define RI (1<<6) //IC ring indicator
nobukuma 0:003889bc474f 41 #define RTS (1<<3) //RTR request to send
nobukuma 0:003889bc474f 42 #define DSR (1<<2) //RTC data set ready
nobukuma 0:003889bc474f 43 #define FC (1<<1) //Flow Control
nobukuma 0:003889bc474f 44 #define EA (1<<0) //extended address (always 1)
nobukuma 0:003889bc474f 45 #define SIGNALS (DCD | RTS | DSR | EA)
nobukuma 0:003889bc474f 46
nobukuma 0:003889bc474f 47 #define DEBUG 1
nobukuma 0:003889bc474f 48 #define TAKE_INITIATIVE
nobukuma 0:003889bc474f 49
nobukuma 0:003889bc474f 50 RFCOMMManager rfcomm_manager;
nobukuma 0:003889bc474f 51
nobukuma 0:003889bc474f 52 //uint8_t rfcomm_out_buffer[1000];//seems a bit big as default max framesize is 127
nobukuma 0:003889bc474f 53 //unsigned rfcomm::maxframesize = MAX_FRAME_SIZE; //only initial value
nobukuma 0:003889bc474f 54
nobukuma 0:003889bc474f 55 //these functions are obtained from rfcomm.c on google code
nobukuma 0:003889bc474f 56 void _bt_rfcomm_send_sabm(unsigned short source_cid, unsigned char initiator, unsigned char channel);
nobukuma 0:003889bc474f 57 void _bt_rfcomm_send_uih_pn_command(unsigned short source_cid, unsigned char initiator, unsigned char channel, unsigned short max_frame_size);
nobukuma 0:003889bc474f 58 void _bt_rfcomm_send_uih_msc_cmd(unsigned short source_cid, unsigned char initiator, unsigned char channel, unsigned char signals);
nobukuma 0:003889bc474f 59 void _bt_rfcomm_send_uih_rpn_cmd(uint16_t source_cid, uint8_t initiator, uint8_t dlci, port_settings *val);
nobukuma 0:003889bc474f 60 int rfcomm_send_packet(unsigned short source_cid, unsigned char address, unsigned char control, unsigned char credits, const unsigned char *data, unsigned short len);
nobukuma 0:003889bc474f 61 uint8_t crc8_calc(uint8_t *data, uint16_t len);
nobukuma 0:003889bc474f 62
nobukuma 0:003889bc474f 63
nobukuma 0:003889bc474f 64 //find a free socket slot for channel ch
nobukuma 0:003889bc474f 65 int rfcomm::find_slot(unsigned ch) {
nobukuma 0:003889bc474f 66 for (int i = 0; i < MAX_RFCOMM_SCKTS; i++) {
nobukuma 0:003889bc474f 67 if (sckts[i] != 0) { //socket is in use
nobukuma 0:003889bc474f 68 RFCOMMSocket *s = (RFCOMMSocket*)GetSocketInternal(sckts[i]);
nobukuma 0:003889bc474f 69 if (s==0) {
nobukuma 0:003889bc474f 70 printf("find_slot: socket %d not found\n", sckts[i]);
nobukuma 0:003889bc474f 71 continue;
nobukuma 0:003889bc474f 72 }
nobukuma 0:003889bc474f 73 if (s->dlci >> 1 == ch) {
nobukuma 0:003889bc474f 74 printf("Channel %d is already in use on socket %d\n", ch, sckts[i]);
nobukuma 0:003889bc474f 75 return -1;
nobukuma 0:003889bc474f 76 }
nobukuma 0:003889bc474f 77 } else //slot is free
nobukuma 0:003889bc474f 78 return i;
nobukuma 0:003889bc474f 79 }
nobukuma 0:003889bc474f 80 return -2; //no free slots
nobukuma 0:003889bc474f 81 }
nobukuma 0:003889bc474f 82
nobukuma 0:003889bc474f 83 //find the rfcomm socket for dlci
nobukuma 0:003889bc474f 84 RFCOMMSocket* rfcomm::find_socket(unsigned dlci) {
nobukuma 0:003889bc474f 85 for (int i = 0; i < MAX_RFCOMM_SCKTS; i++) {
nobukuma 0:003889bc474f 86 if (sckts[i] != 0) { //socket is in use
nobukuma 0:003889bc474f 87 RFCOMMSocket *s = (RFCOMMSocket*)GetSocketInternal(sckts[i]);
nobukuma 0:003889bc474f 88 if (s==0) {
nobukuma 0:003889bc474f 89 printf("find_socket: socket %d not found\n", sckts[i]);
nobukuma 0:003889bc474f 90 continue;
nobukuma 0:003889bc474f 91 }
nobukuma 0:003889bc474f 92 if (s->dlci == dlci) {
nobukuma 0:003889bc474f 93 return s;
nobukuma 0:003889bc474f 94 }
nobukuma 0:003889bc474f 95 }
nobukuma 0:003889bc474f 96 }
nobukuma 0:003889bc474f 97 printf("RFCOMMSocket for dlci %d was not found!\n", dlci);
nobukuma 0:003889bc474f 98 return 0; //socket not found
nobukuma 0:003889bc474f 99 }
nobukuma 0:003889bc474f 100
nobukuma 0:003889bc474f 101 //send a PN command to all sockets waiting to be opened
nobukuma 0:003889bc474f 102 void rfcomm::initChannels(int socket) {
nobukuma 0:003889bc474f 103 for (int i = 0; i < MAX_RFCOMM_SCKTS; i++) {
nobukuma 0:003889bc474f 104 if (sckts[i] != 0) { //socket is in use
nobukuma 0:003889bc474f 105 RFCOMMSocket *s = (RFCOMMSocket*)GetSocketInternal(sckts[i]);
nobukuma 0:003889bc474f 106 if (s==0) {
nobukuma 0:003889bc474f 107 printf("initChannels: socket %d not found\n", sckts[i]);
nobukuma 0:003889bc474f 108 continue;
nobukuma 0:003889bc474f 109 }
nobukuma 0:003889bc474f 110 if (s->State == SocketState_Opening) {
nobukuma 0:003889bc474f 111 printf("Sending PN for DLCI %d on socket %d\n", s->dlci, sckts[i]);
nobukuma 0:003889bc474f 112 _bt_rfcomm_send_uih_pn_command(socket, 1, s->dlci, maxframesize);
nobukuma 0:003889bc474f 113 s->State = SocketState_L2CAP_Config_wait;
nobukuma 0:003889bc474f 114 }
nobukuma 0:003889bc474f 115 }
nobukuma 0:003889bc474f 116 }
nobukuma 0:003889bc474f 117 }
nobukuma 0:003889bc474f 118
nobukuma 0:003889bc474f 119 unsigned rfcomm::release_channel(unsigned dlci) {
nobukuma 0:003889bc474f 120 int n = 0;
nobukuma 0:003889bc474f 121 for (int i = 0; i < MAX_RFCOMM_SCKTS; i++) {
nobukuma 0:003889bc474f 122 if (sckts[i] != 0) { //socket is in use
nobukuma 0:003889bc474f 123 RFCOMMSocket *s = (RFCOMMSocket*)GetSocketInternal(sckts[i]);
nobukuma 0:003889bc474f 124 if (s==0) {
nobukuma 0:003889bc474f 125 printf("Release: socket for dlci %d not found\n", dlci);
nobukuma 0:003889bc474f 126 continue;
nobukuma 0:003889bc474f 127 }
nobukuma 0:003889bc474f 128 if (s->dlci == dlci)
nobukuma 0:003889bc474f 129 sckts[i] = 0;
nobukuma 0:003889bc474f 130 else
nobukuma 0:003889bc474f 131 n++;
nobukuma 0:003889bc474f 132 }
nobukuma 0:003889bc474f 133 }
nobukuma 0:003889bc474f 134 return n;
nobukuma 0:003889bc474f 135 }
nobukuma 0:003889bc474f 136
nobukuma 0:003889bc474f 137 int rfcomm::Send(SocketInternal *sock, const u8* data, int len) {//also see if credits need to be send
nobukuma 0:003889bc474f 138 RFCOMMSocket *s = (RFCOMMSocket*)sock;
nobukuma 0:003889bc474f 139 char credits = 0;
nobukuma 0:003889bc474f 140 char control = BT_RFCOMM_UIH;
nobukuma 0:003889bc474f 141 if (len + 14 > maxframesize) //hci/l2cap header =8, rfcomm header ~ 6
nobukuma 0:003889bc474f 142 printf("Error! packetsize = %d, maxframesize = %d\n", len, maxframesize);
nobukuma 0:003889bc474f 143 if (s->peer_credits == 0) {//peer is low on credits
nobukuma 0:003889bc474f 144 credits = NR_CREDITS;
nobukuma 0:003889bc474f 145 control = BT_RFCOMM_UIH_PF;
nobukuma 0:003889bc474f 146 s->peer_credits += NR_CREDITS;//so provide some more
nobukuma 0:003889bc474f 147 }
nobukuma 0:003889bc474f 148 unsigned char address = (1 << 0) | (initiator << 1) | (s->dlci << 2);
nobukuma 0:003889bc474f 149 if (s->my_credits) {
nobukuma 0:003889bc474f 150 s->my_credits--;
nobukuma 0:003889bc474f 151 return rfcomm_send_packet(_l2cap, address, control, credits, data, len);
nobukuma 0:003889bc474f 152 } else
nobukuma 0:003889bc474f 153 return rfcomm_send_packet(_l2cap, address, control, credits, data, 0);//send an empty packet when credits run out
nobukuma 0:003889bc474f 154 }
nobukuma 0:003889bc474f 155
nobukuma 0:003889bc474f 156 int rfcomm::Close(SocketInternal* sock) {
nobukuma 0:003889bc474f 157 RFCOMMSocket *s = (RFCOMMSocket*)sock;
nobukuma 0:003889bc474f 158 int id = s->dlci;
nobukuma 0:003889bc474f 159 printf("Closing rfcomm dlci %d state=%d\n", id, s->State);
nobukuma 0:003889bc474f 160 Disconnect(s);
nobukuma 0:003889bc474f 161 int n = release_channel(id);
nobukuma 0:003889bc474f 162 printf("%d channels are still open\n", n);
nobukuma 0:003889bc474f 163 if (n == 0) {//all rfcomm channels are closed
nobukuma 0:003889bc474f 164 printf("....L2CAP must be closed as well\n");
nobukuma 0:003889bc474f 165 rfcomm_send_packet(_l2cap, (1 << 0) | (initiator << 1), BT_RFCOMM_DISC, 0, 0, 0); //close dlci0
nobukuma 0:003889bc474f 166 Socket_Close(_l2cap);
nobukuma 0:003889bc474f 167 _l2cap = 0; //return rfcomm to the pool
nobukuma 0:003889bc474f 168 }
nobukuma 0:003889bc474f 169 return 0;
nobukuma 0:003889bc474f 170 }
nobukuma 0:003889bc474f 171
nobukuma 0:003889bc474f 172 int rfcomm::SetOpt(SocketInternal *sock, int so, int* data, int len) {
nobukuma 0:003889bc474f 173 switch (so) {
nobukuma 0:003889bc474f 174 case SO_RECBUF:
nobukuma 0:003889bc474f 175 case SO_SNDBUF:
nobukuma 0:003889bc474f 176 maxframesize = *data; //pointless because setting takes effect only before socket is opened (before PN)
nobukuma 0:003889bc474f 177 break;
nobukuma 0:003889bc474f 178 default: return NOPROTOOPT;
nobukuma 0:003889bc474f 179 }
nobukuma 0:003889bc474f 180 return 0;
nobukuma 0:003889bc474f 181 }
nobukuma 0:003889bc474f 182
nobukuma 0:003889bc474f 183 int rfcomm::GetOpt(SocketInternal *sock, int so, int* data, int len) {
nobukuma 0:003889bc474f 184 switch (so) {
nobukuma 0:003889bc474f 185 case SO_RECBUF:
nobukuma 0:003889bc474f 186 case SO_SNDBUF:
nobukuma 0:003889bc474f 187 if (len >= sizeof(int))
nobukuma 0:003889bc474f 188 *data = maxframesize;
nobukuma 0:003889bc474f 189 break;
nobukuma 0:003889bc474f 190 default: return NOPROTOOPT;
nobukuma 0:003889bc474f 191 }
nobukuma 0:003889bc474f 192 return 0;
nobukuma 0:003889bc474f 193 }
nobukuma 0:003889bc474f 194
nobukuma 0:003889bc474f 195 int rfcomm::Disconnect(RFCOMMSocket *s) {
nobukuma 0:003889bc474f 196 unsigned char address = (1 << 0) | (initiator << 1) | (s->dlci << 2);
nobukuma 0:003889bc474f 197 return rfcomm_send_packet(_l2cap, address, BT_RFCOMM_DISC, 0, 0, 0);
nobukuma 0:003889bc474f 198 }
nobukuma 0:003889bc474f 199
nobukuma 0:003889bc474f 200 //expect this to be called with socket type=SOCKET_RFCOM and addr->psm = channel and addr->bdaddr is the BT addr
nobukuma 0:003889bc474f 201 //of the device to connect to.
nobukuma 0:003889bc474f 202 //eg. Socket_Open(SOCKET_RFCOM, rfcommaddr(bdaddr, chan), receiver_func, appl_obj);
nobukuma 0:003889bc474f 203 int rfcomm::Open(SocketInternal* sock, SocketAddrHdr* addr) {
nobukuma 0:003889bc474f 204 int ch = ((L2CAPAddr*)addr)->psm;//abused psm for channel ID
nobukuma 0:003889bc474f 205 RFCOMMSocket *s = (RFCOMMSocket*)sock;
nobukuma 0:003889bc474f 206 int slot = find_slot(ch);
nobukuma 0:003889bc474f 207 if (slot < 0) return 0;
nobukuma 0:003889bc474f 208 sckts[slot] = s->ID;
nobukuma 0:003889bc474f 209 s->serdevice = this;
nobukuma 0:003889bc474f 210 s->State = SocketState_Opening;
nobukuma 0:003889bc474f 211
nobukuma 0:003889bc474f 212 if (_l2cap == 0) { //no rfcomm -> l2cap connection yet
nobukuma 0:003889bc474f 213 printf("Need to open L2CAP channel first before opening RFCOMM channel %d\n", s->dlci);
nobukuma 0:003889bc474f 214 ((L2CAPAddr*)addr)->psm = L2CAP_PSM_RFCOMM;//open the l2cap channel and the rfcomm_ch channel
nobukuma 0:003889bc474f 215 initiator = 1;
nobukuma 0:003889bc474f 216 s->dlci = (ch<<1)|!initiator;
nobukuma 0:003889bc474f 217 _l2cap = Socket_Open(SOCKET_L2CAP, addr, OnRfCommControl, this);//this is the socket between the RFCOMM and the L2CAP layer
nobukuma 0:003889bc474f 218 if (_l2cap)
nobukuma 0:003889bc474f 219 printf("Successfully opened L2CAP channel on socket %d\n", _l2cap);
nobukuma 0:003889bc474f 220 else {
nobukuma 0:003889bc474f 221 printf("Opening L2CAP channel failed\n");
nobukuma 0:003889bc474f 222 sckts[slot] = 0;
nobukuma 0:003889bc474f 223 s->State = SocketState_Closed;
nobukuma 0:003889bc474f 224 return 0;
nobukuma 0:003889bc474f 225 }
nobukuma 0:003889bc474f 226 } else {//bypass the l2cap channel creation
nobukuma 0:003889bc474f 227 s->dlci = (ch<<1)|!initiator;
nobukuma 0:003889bc474f 228 _bt_rfcomm_send_uih_pn_command(_l2cap, initiator, s->dlci, maxframesize);
nobukuma 0:003889bc474f 229 s->State = SocketState_L2CAP_Config_wait;
nobukuma 0:003889bc474f 230 }
nobukuma 0:003889bc474f 231 return s->ID; //return the application unique socket nr.
nobukuma 0:003889bc474f 232 }
nobukuma 0:003889bc474f 233
nobukuma 0:003889bc474f 234 int rfcomm::set_remote_port_parameters(unsigned char dlci, port_settings *p) {
nobukuma 0:003889bc474f 235 _bt_rfcomm_send_uih_rpn_cmd(_l2cap, initiator, dlci, p);
nobukuma 0:003889bc474f 236 return 0;
nobukuma 0:003889bc474f 237 }
nobukuma 0:003889bc474f 238
nobukuma 0:003889bc474f 239 //socket is an L2CAP socket and state is the state of the L2CAP socket, not the RFCOMM socket
nobukuma 0:003889bc474f 240 void rfcomm::OnRfCommControl(int socket, SocketState state, const u8* data, int len, void* userData) {
nobukuma 0:003889bc474f 241 int packet_processed = 0;
nobukuma 0:003889bc474f 242 rfcomm* self = (rfcomm*)userData;
nobukuma 0:003889bc474f 243 const u8 initiator = self->initiator;
nobukuma 0:003889bc474f 244 printf("\x1B[%dm", 32); //debug: set a different colour
nobukuma 0:003889bc474f 245 printf("OnRfCommControl sock = %d, state = %d, length = %d\n", socket, state, len);
nobukuma 0:003889bc474f 246
nobukuma 0:003889bc474f 247 if (len == 0) {//client only
nobukuma 0:003889bc474f 248 if (state==SocketState_Open) {//callback after change to 'open', the rfcomm->l2cap channel is now open
nobukuma 0:003889bc474f 249 _bt_rfcomm_send_sabm(socket, initiator, 0); //setup the rfcomm control channel dlci==0
nobukuma 0:003889bc474f 250 return;
nobukuma 0:003889bc474f 251 }
nobukuma 0:003889bc474f 252 return; //or other states to handle, e.g. Closing or Closed
nobukuma 0:003889bc474f 253 }
nobukuma 0:003889bc474f 254 //we have data, so parse the header
nobukuma 0:003889bc474f 255 const u8 &addr = data[0];
nobukuma 0:003889bc474f 256 u8 dlci = addr>>2;
nobukuma 0:003889bc474f 257 const u8 &control = data[1];
nobukuma 0:003889bc474f 258 u16 length = data[2]>>1;
nobukuma 0:003889bc474f 259 const u8 *payload = data+3;
nobukuma 0:003889bc474f 260 const u8 *pFCS = data+len-1; //expected position of the CRC
nobukuma 0:003889bc474f 261 if (!(data[2]&1)) { //two byte length
nobukuma 0:003889bc474f 262 length += ((unsigned)data[3])<<7;
nobukuma 0:003889bc474f 263 payload++;
nobukuma 0:003889bc474f 264 }
nobukuma 0:003889bc474f 265 u8 credits = 0;
nobukuma 0:003889bc474f 266 if (control == BT_RFCOMM_UIH_PF)//this packet carries credits
nobukuma 0:003889bc474f 267 credits = *(payload++);
nobukuma 0:003889bc474f 268 //sanity check
nobukuma 0:003889bc474f 269 if (payload+length != pFCS)
nobukuma 0:003889bc474f 270 printf("RFCOMM size mismatch, expected %d payload bytes, got %d\n", length, pFCS-payload);
nobukuma 0:003889bc474f 271
nobukuma 0:003889bc474f 272 if (DEBUG) {
nobukuma 0:003889bc474f 273 printf("RFCOMM: EA=%d, C/R=%d, D=%d, ch=%d; control=%02X (P/F=%d); length=%d\n", addr&1, (addr>>1)&1, (addr>>2)&1, (addr>>3), control, (control>>4)&1, length);
nobukuma 0:003889bc474f 274 printfBytes("payload:", payload, length);
nobukuma 0:003889bc474f 275 }
nobukuma 0:003889bc474f 276 if (dlci == 0) { //dlci==0 control channel
nobukuma 0:003889bc474f 277 L2CAPSocket *s = (L2CAPSocket*)GetSocketInternal(socket);
nobukuma 0:003889bc474f 278 switch (control) {
nobukuma 0:003889bc474f 279 case BT_RFCOMM_UA:// received 1. message BT_RF_COMM_UA
nobukuma 0:003889bc474f 280 packet_processed++;
nobukuma 0:003889bc474f 281 if (s->si.State == SocketState_Closing || s->si.State==SocketState_L2CAP_WaitDisconnect) { //Confirmation of disconnect
nobukuma 0:003889bc474f 282 printf("Remote side confirmed disconnect for socket %d\n", s->si.ID);
nobukuma 0:003889bc474f 283 s->si.SetState(SocketState_Closed);
nobukuma 0:003889bc474f 284 break;
nobukuma 0:003889bc474f 285 }
nobukuma 0:003889bc474f 286 printf("Received RFCOMM unnumbered acknowledgement for channel 0 - multiplexer working\n");
nobukuma 0:003889bc474f 287 printf("Sending UIH Parameter Negotiation Command from OnRfCommControl\n");
nobukuma 0:003889bc474f 288 self->initChannels(socket);
nobukuma 0:003889bc474f 289 break;
nobukuma 0:003889bc474f 290 case BT_RFCOMM_UIH:// received UIH Parameter Negotiation Response
nobukuma 0:003889bc474f 291 switch (payload[0]) {
nobukuma 0:003889bc474f 292 case BT_RFCOMM_PN_RSP: {//client
nobukuma 0:003889bc474f 293 packet_processed++;
nobukuma 0:003889bc474f 294 printf("UIH Parameter Negotiation Response\n");
nobukuma 0:003889bc474f 295 printf("Sending SABM #%u\n", payload[2]);
nobukuma 0:003889bc474f 296 _bt_rfcomm_send_sabm(socket, initiator, payload[2]);//was rfcomm_ch
nobukuma 0:003889bc474f 297 RFCOMMSocket *r = self->find_socket(payload[2]);
nobukuma 0:003889bc474f 298 if (r==0) break;
nobukuma 0:003889bc474f 299 r->my_credits = payload[9]; //initial amount of credits
nobukuma 0:003889bc474f 300 self->maxframesize = min(self->maxframesize, payload[6] + (payload[7]<<8));
nobukuma 0:003889bc474f 301 printf("Max Frame Size = %d, got %d initial credits\n", self->maxframesize, payload[9]);
nobukuma 0:003889bc474f 302 }
nobukuma 0:003889bc474f 303 break;
nobukuma 0:003889bc474f 304 case BT_RFCOMM_PN_CMD: { //remote side sent PN command, mtu and initial credits
nobukuma 0:003889bc474f 305 packet_processed++;
nobukuma 0:003889bc474f 306 printf("UIH Parameter Negotiation Indication\n");
nobukuma 0:003889bc474f 307 self->maxframesize = min(self->maxframesize, payload[6] + (payload[7]<<8));
nobukuma 0:003889bc474f 308 unsigned char cred = payload[9] & 7;
nobukuma 0:003889bc474f 309 unsigned char _dlci = payload[2];
nobukuma 0:003889bc474f 310
nobukuma 0:003889bc474f 311 int skt = rfcomm_manager.find_socket(_dlci>>1);
nobukuma 0:003889bc474f 312 if (skt == 0) { //No-one is listening
nobukuma 0:003889bc474f 313 printf("No-one is Listening on channel %d\n", _dlci>>1);
nobukuma 0:003889bc474f 314 rfcomm_send_packet(socket, (_dlci<<2)|1, BT_RFCOMM_DM, 0, 0, 0);
nobukuma 0:003889bc474f 315 break;
nobukuma 0:003889bc474f 316 }
nobukuma 0:003889bc474f 317 RFCOMMSocket *r = (RFCOMMSocket*)GetSocketInternal(skt);
nobukuma 0:003889bc474f 318 r->my_credits = cred;
nobukuma 0:003889bc474f 319 r->peer_credits = INITIAL_CREDITS;
nobukuma 0:003889bc474f 320 unsigned char reply[10];
nobukuma 0:003889bc474f 321 memcpy(reply, payload, sizeof(reply));
nobukuma 0:003889bc474f 322 reply[0] = BT_RFCOMM_PN_RSP;//[1]=len, [2]=dlci, [4]=priority, [5]=timer(must be 0), [8] retransmissions (must be 0)
nobukuma 0:003889bc474f 323 reply[3] = payload[3]==0xF0 ? 0xE0 : 0; //support credit based flow control
nobukuma 0:003889bc474f 324 reply[6] = self->maxframesize;
nobukuma 0:003889bc474f 325 reply[7] = self->maxframesize>>8;
nobukuma 0:003889bc474f 326 reply[9] = payload[3]==0xF0 ? r->peer_credits : 0;
nobukuma 0:003889bc474f 327 printf("Max Frame Size = %d, give %d initial credits\n", self->maxframesize, reply[9]);
nobukuma 0:003889bc474f 328 rfcomm_send_packet(socket, addr^2, BT_RFCOMM_UIH, 0, reply, sizeof(reply));
nobukuma 0:003889bc474f 329 }
nobukuma 0:003889bc474f 330 break;
nobukuma 0:003889bc474f 331 case BT_RFCOMM_MSC_CMD:
nobukuma 0:003889bc474f 332 packet_processed++;
nobukuma 0:003889bc474f 333 {
nobukuma 0:003889bc474f 334 printf("Received BT_RFCOMM_MSC_IND\n");
nobukuma 0:003889bc474f 335 // fine with this, return the same status and ignore the value, there is no room in the socket to store the value, rfcomm could generate an event
nobukuma 0:003889bc474f 336 RFCOMMSocket *r = self->find_socket(payload[2]>>2);
nobukuma 0:003889bc474f 337 if (r==0) break;
nobukuma 0:003889bc474f 338 unsigned char reply[5];
nobukuma 0:003889bc474f 339 memcpy(reply, payload, 5); //keep length, dlci and value(s)
nobukuma 0:003889bc474f 340 reply[0] = BT_RFCOMM_MSC_RSP; // change command into response
nobukuma 0:003889bc474f 341 printf("Sending MSC_RSP (%d bytes)\n", length);
nobukuma 0:003889bc474f 342 rfcomm_send_packet(socket, addr^2, BT_RFCOMM_UIH, 0, reply, (payload[1]>>1)+2); // reply is 4 or 5 bytes
nobukuma 0:003889bc474f 343 switch (r->State) {
nobukuma 0:003889bc474f 344 case SocketState_L2CAP_Config_wait:
nobukuma 0:003889bc474f 345 r->State = SocketState_L2CAP_Config_wait_send;
nobukuma 0:003889bc474f 346 printf("Sending MSC_CMD\n");
nobukuma 0:003889bc474f 347 _bt_rfcomm_send_uih_msc_cmd(socket, initiator, payload[2]>>2, SIGNALS); // ea=1,fc=0,rtc(DSR/DTR)=1,rtr(RTS/CTs)=1,ic(RI)=0,dv(DCD)=1
nobukuma 0:003889bc474f 348 r->State = SocketState_L2CAP_Config_wait_rsp;
nobukuma 0:003889bc474f 349 break;
nobukuma 0:003889bc474f 350 case SocketState_L2CAP_Config_wait_reqrsp:
nobukuma 0:003889bc474f 351 r->State = SocketState_L2CAP_Config_wait_rsp;
nobukuma 0:003889bc474f 352 break;
nobukuma 0:003889bc474f 353 case SocketState_L2CAP_Config_wait_req:
nobukuma 0:003889bc474f 354 r->SetState(SocketState_Open);
nobukuma 0:003889bc474f 355 break;
nobukuma 0:003889bc474f 356 case SocketState_Open:
nobukuma 0:003889bc474f 357 //inform port adaptation layer
nobukuma 0:003889bc474f 358 printf("Received MSC IND in state Open for dlci 0x%02x\n", payload[2]>>2);
nobukuma 0:003889bc474f 359 break;
nobukuma 0:003889bc474f 360 default:
nobukuma 0:003889bc474f 361 printf("Received MSC IND in state %d for dlci 0x%02x\n", r->State, payload[2]>>2);
nobukuma 0:003889bc474f 362 }
nobukuma 0:003889bc474f 363 }
nobukuma 0:003889bc474f 364 break;
nobukuma 0:003889bc474f 365 case BT_RFCOMM_MSC_RSP:
nobukuma 0:003889bc474f 366 packet_processed++;
nobukuma 0:003889bc474f 367 {
nobukuma 0:003889bc474f 368 RFCOMMSocket *r = self->find_socket(payload[2]>>2);
nobukuma 0:003889bc474f 369 if (r==0) break;
nobukuma 0:003889bc474f 370 if (r->State == SocketState_L2CAP_Config_wait_reqrsp)
nobukuma 0:003889bc474f 371 r->State = SocketState_L2CAP_Config_wait_req;
nobukuma 0:003889bc474f 372 else if (r->State == SocketState_L2CAP_Config_wait_rsp)
nobukuma 0:003889bc474f 373 r->SetState(SocketState_Open);
nobukuma 0:003889bc474f 374 else
nobukuma 0:003889bc474f 375 printf("Received MSC confirmation in state %d for dlci 0x%02x\n", r->State, payload[2]>>2);
nobukuma 0:003889bc474f 376 }
nobukuma 0:003889bc474f 377 break;
nobukuma 0:003889bc474f 378 case BT_RFCOMM_RPN_CMD:
nobukuma 0:003889bc474f 379 packet_processed++;
nobukuma 0:003889bc474f 380 //accept and ignore all settings
nobukuma 0:003889bc474f 381 unsigned char reply[10];
nobukuma 0:003889bc474f 382 memcpy(reply, payload, length); //keep length, dlci and value(s)
nobukuma 0:003889bc474f 383 reply[0] = BT_RFCOMM_RPN_RSP; // change command into response
nobukuma 0:003889bc474f 384 printf("Responding to RPN indication (%d bytes)\n", length);
nobukuma 0:003889bc474f 385 rfcomm_send_packet(socket, addr^2, BT_RFCOMM_UIH, 0, reply, length);
nobukuma 0:003889bc474f 386 break;
nobukuma 0:003889bc474f 387 case BT_RFCOMM_RPN_RSP:
nobukuma 0:003889bc474f 388 packet_processed++;
nobukuma 0:003889bc474f 389 //ignore a response
nobukuma 0:003889bc474f 390 printf("Received RPN confirmation\n");
nobukuma 0:003889bc474f 391 break;
nobukuma 0:003889bc474f 392 default:
nobukuma 0:003889bc474f 393 printf("Unsupported multiplexer frame, type=%02XH\n", data[3]);
nobukuma 0:003889bc474f 394 }
nobukuma 0:003889bc474f 395 break;
nobukuma 0:003889bc474f 396 case BT_RFCOMM_DISC:
nobukuma 0:003889bc474f 397 printf("Remote site actively disconnected from DLCI0\n");
nobukuma 0:003889bc474f 398 rfcomm_send_packet(socket, addr|2, BT_RFCOMM_UA, 0, 0, 0);//confirm disconnection
nobukuma 0:003889bc474f 399 //intentional fall through
nobukuma 0:003889bc474f 400 case BT_RFCOMM_DM:
nobukuma 0:003889bc474f 401 packet_processed++;
nobukuma 0:003889bc474f 402 printf("Remote side refused connection on DLCI0\n");
nobukuma 0:003889bc474f 403 self->_l2cap = Socket_Close(socket);
nobukuma 0:003889bc474f 404 break;
nobukuma 0:003889bc474f 405 case BT_RFCOMM_SABM:
nobukuma 0:003889bc474f 406 packet_processed++;
nobukuma 0:003889bc474f 407 printf("Remote site is seeking connection on DLCI0\n"); //respond with UA
nobukuma 0:003889bc474f 408 rfcomm_send_packet(socket, addr|2, BT_RFCOMM_UA, 0, 0, 0);//confirm connection
nobukuma 0:003889bc474f 409 break;
nobukuma 0:003889bc474f 410 default:
nobukuma 0:003889bc474f 411 printf("Unexpected RFCOMM cmd %02XH for address %02XH, length=%d\n", control, addr, length);
nobukuma 0:003889bc474f 412 }
nobukuma 0:003889bc474f 413 } else { //data is for one of the serial sockets
nobukuma 0:003889bc474f 414 RFCOMMSocket *s = 0;
nobukuma 0:003889bc474f 415 if (control == BT_RFCOMM_SABM) { //req. for conn on this dlci
nobukuma 0:003889bc474f 416 //cannot call self->rfcomm::find_socket because it has no socket yet
nobukuma 0:003889bc474f 417 int skt = rfcomm_manager.find_socket(dlci>>1); //find the server socket
nobukuma 0:003889bc474f 418 s = (RFCOMMSocket*)GetSocketInternal(skt);//the listening socket
nobukuma 0:003889bc474f 419 if (s) {//move the listening socket to the appropriate rfcomm
nobukuma 0:003889bc474f 420 int slot = self->find_slot(dlci>>1);
nobukuma 0:003889bc474f 421 if (slot < 0) {
nobukuma 0:003889bc474f 422 printf("RFCOMM Channel %d is not free on rfcomm with l2cap socket %d\n", dlci>>1, self->_l2cap);
nobukuma 0:003889bc474f 423 return;
nobukuma 0:003889bc474f 424 }
nobukuma 0:003889bc474f 425 s->serdevice = self; //bind the socket to this refcomm entity
nobukuma 0:003889bc474f 426 self->sckts[slot] = skt;
nobukuma 0:003889bc474f 427 rfcomm_manager.remove_socket(skt);
nobukuma 0:003889bc474f 428 } else {
nobukuma 0:003889bc474f 429 printf("Couln't find a listening socket for dlci %d\n", dlci);
nobukuma 0:003889bc474f 430 return;
nobukuma 0:003889bc474f 431 }
nobukuma 0:003889bc474f 432 } else
nobukuma 0:003889bc474f 433 s = self->find_socket(dlci);
nobukuma 0:003889bc474f 434 if (s==0){
nobukuma 0:003889bc474f 435 printf("DLCI %d not found\n", dlci);
nobukuma 0:003889bc474f 436 return;
nobukuma 0:003889bc474f 437 }
nobukuma 0:003889bc474f 438 switch (control) {
nobukuma 0:003889bc474f 439 case BT_RFCOMM_SABM:
nobukuma 0:003889bc474f 440 packet_processed++;
nobukuma 0:003889bc474f 441 rfcomm_send_packet(socket, addr|2, BT_RFCOMM_UA, 0, 0, 0);//confirm connection
nobukuma 0:003889bc474f 442 s->State = SocketState_L2CAP_Config_wait; //wait for msc cmd
nobukuma 0:003889bc474f 443 #ifdef TAKE_INITIATIVE
nobukuma 0:003889bc474f 444 printf("Sending MSC_CMD\n");
nobukuma 0:003889bc474f 445 _bt_rfcomm_send_uih_msc_cmd(socket, initiator, dlci, 0x8d); // ea=1,fc=0,rtc(DSR/DTR)=1,rtr(RTS/CTs)=1,ic(RI)=0,dv(DCD)=1
nobukuma 0:003889bc474f 446 s->State = SocketState_L2CAP_Config_wait_reqrsp;
nobukuma 0:003889bc474f 447 #endif
nobukuma 0:003889bc474f 448 break;
nobukuma 0:003889bc474f 449 case BT_RFCOMM_UA:// received 2. message BT_RF_COMM_UA
nobukuma 0:003889bc474f 450 packet_processed++;
nobukuma 0:003889bc474f 451 if (s->State == SocketState_Closing) { //Confirmation of disconnect
nobukuma 0:003889bc474f 452 printf("Remote side confirmed disconnect for socket %d\n", s->ID);
nobukuma 0:003889bc474f 453 s->SetState(SocketState_Closed);
nobukuma 0:003889bc474f 454 break;
nobukuma 0:003889bc474f 455 }
nobukuma 0:003889bc474f 456 printf("Received RFCOMM unnumbered acknowledgement for dlci %u - channel opened\n", dlci);
nobukuma 0:003889bc474f 457 if (s->State == SocketState_L2CAP_Config_wait) {
nobukuma 0:003889bc474f 458 printf("Sending MSC CMD\n");
nobukuma 0:003889bc474f 459 _bt_rfcomm_send_uih_msc_cmd(socket, initiator, dlci, 0x8d); // ea=1,fc=0,rtc(DSR/DTR)=1,rtr(RTS/CTs)=1,ic(RI)=0,dv(DCD)=1
nobukuma 0:003889bc474f 460 s->State = SocketState_L2CAP_Config_wait_reqrsp;
nobukuma 0:003889bc474f 461 }
nobukuma 0:003889bc474f 462 break;
nobukuma 0:003889bc474f 463 case BT_RFCOMM_UIH_PF: //user data with credits
nobukuma 0:003889bc474f 464 printf("Got %u credits\n", credits);
nobukuma 0:003889bc474f 465 s->my_credits += credits;
nobukuma 0:003889bc474f 466 //intentional fall-through
nobukuma 0:003889bc474f 467 case BT_RFCOMM_UIH: //user data
nobukuma 0:003889bc474f 468 packet_processed++;
nobukuma 0:003889bc474f 469 if (DEBUG) {
nobukuma 0:003889bc474f 470 printf("RX: address %02x, control %02x: ", addr, control);
nobukuma 0:003889bc474f 471 printHex( payload, length);
nobukuma 0:003889bc474f 472 }
nobukuma 0:003889bc474f 473 if (length) {
nobukuma 0:003889bc474f 474 s->peer_credits--;
nobukuma 0:003889bc474f 475 s->Recv(payload, length);
nobukuma 0:003889bc474f 476 } else
nobukuma 0:003889bc474f 477 printf("Received empty packet\n");
nobukuma 0:003889bc474f 478 if (length == 0 || s->peer_credits == 0) {//send credits when peer runs out
nobukuma 0:003889bc474f 479 //char ini = !(dlci & 1);
nobukuma 0:003889bc474f 480 unsigned char address = (1 << 0) | (initiator << 1) | (dlci << 2);
nobukuma 0:003889bc474f 481 printf("send %d credits to dlci %d\n", NR_CREDITS, addr>>2);
nobukuma 0:003889bc474f 482 rfcomm_send_packet(socket, address, BT_RFCOMM_UIH_PF, NR_CREDITS, NULL, 0);
nobukuma 0:003889bc474f 483 s->peer_credits += NR_CREDITS;
nobukuma 0:003889bc474f 484 }
nobukuma 0:003889bc474f 485 break;
nobukuma 0:003889bc474f 486 case BT_RFCOMM_DISC:
nobukuma 0:003889bc474f 487 packet_processed++;
nobukuma 0:003889bc474f 488 printf("Received DISC IND for dlci %d\n", dlci);
nobukuma 0:003889bc474f 489 rfcomm_send_packet(socket, addr, BT_RFCOMM_UA, 0, 0, 0);//confirm disconnection
nobukuma 0:003889bc474f 490 s->SetState(SocketState_Closed);
nobukuma 0:003889bc474f 491 break;
nobukuma 0:003889bc474f 492 case BT_RFCOMM_DM:
nobukuma 0:003889bc474f 493 case BT_RFCOMM_DM_PF:
nobukuma 0:003889bc474f 494 packet_processed++;
nobukuma 0:003889bc474f 495 printf("Received DM IND (%02X) for dlci %d\n", control, dlci);
nobukuma 0:003889bc474f 496 s->SetState(SocketState_Closed);
nobukuma 0:003889bc474f 497 break;
nobukuma 0:003889bc474f 498 default:
nobukuma 0:003889bc474f 499 printf("Unexpected RFCOMM cmd %02XH for address %02XH, length=%d\n", control, addr, length);
nobukuma 0:003889bc474f 500 }
nobukuma 0:003889bc474f 501 }
nobukuma 0:003889bc474f 502
nobukuma 0:003889bc474f 503 if (!packet_processed) {
nobukuma 0:003889bc474f 504 // just dump data for now
nobukuma 0:003889bc474f 505 printf("??: address %02x, control %02x: ", data[0], data[1]);
nobukuma 0:003889bc474f 506 printHex( data, len );
nobukuma 0:003889bc474f 507 }
nobukuma 0:003889bc474f 508 printf("\x1B[%dm", 0);//reset terminal colour
nobukuma 0:003889bc474f 509 }
nobukuma 0:003889bc474f 510
nobukuma 0:003889bc474f 511 //should make the functions below member functions
nobukuma 0:003889bc474f 512
nobukuma 0:003889bc474f 513 /**
nobukuma 0:003889bc474f 514 * @param credits - only used for RFCOMM flow control in UIH wiht P/F = 1
nobukuma 0:003889bc474f 515 */
nobukuma 0:003889bc474f 516 /* Questionable optimisation. When OFFSET==8 a buffer is (dynamically) allocated that provides space for the lower
nobukuma 0:003889bc474f 517 layer headers, this reduces copying to, and allocation of, a lower layer buffer. However, all other layers using
nobukuma 0:003889bc474f 518 HCI/L2CAP must do the same.
nobukuma 0:003889bc474f 519 */
nobukuma 0:003889bc474f 520 #define OFFSET 8
nobukuma 0:003889bc474f 521
nobukuma 0:003889bc474f 522 int rfcomm_send_packet(uint16_t source_cid, uint8_t address, uint8_t control, uint8_t credits, const uint8_t *data, uint16_t len) {
nobukuma 0:003889bc474f 523
nobukuma 0:003889bc474f 524 uint16_t pos = OFFSET;
nobukuma 0:003889bc474f 525 uint8_t crc_fields = 3;
nobukuma 0:003889bc474f 526
nobukuma 0:003889bc474f 527 #if OFFSET == 8
nobukuma 0:003889bc474f 528 uint8_t* rfcomm_out_buffer = new uint8_t[OFFSET+len+6];
nobukuma 0:003889bc474f 529 #else
nobukuma 0:003889bc474f 530 static uint8_t rfcomm_out_buffer[MAXFRAMESIZE+6];//seems a bit big as default max framesize is 127
nobukuma 0:003889bc474f 531 #endif
nobukuma 0:003889bc474f 532 rfcomm_out_buffer[pos++] = address;
nobukuma 0:003889bc474f 533 rfcomm_out_buffer[pos++] = control;
nobukuma 0:003889bc474f 534
nobukuma 0:003889bc474f 535 // length field can be 1 or 2 octets
nobukuma 0:003889bc474f 536 if (len < 128) {
nobukuma 0:003889bc474f 537 rfcomm_out_buffer[pos++] = (len << 1)| 1; // bits 0-6
nobukuma 0:003889bc474f 538 } else {
nobukuma 0:003889bc474f 539 rfcomm_out_buffer[pos++] = (len & 0x7f) << 1; // bits 0-6
nobukuma 0:003889bc474f 540 rfcomm_out_buffer[pos++] = len >> 7; // bits 7-14
nobukuma 0:003889bc474f 541 crc_fields++;
nobukuma 0:003889bc474f 542 }
nobukuma 0:003889bc474f 543
nobukuma 0:003889bc474f 544 // add credits for UIH frames when PF bit is set
nobukuma 0:003889bc474f 545 if (control == BT_RFCOMM_UIH_PF) {
nobukuma 0:003889bc474f 546 rfcomm_out_buffer[pos++] = credits;
nobukuma 0:003889bc474f 547 }
nobukuma 0:003889bc474f 548
nobukuma 0:003889bc474f 549 // copy actual data
nobukuma 0:003889bc474f 550 memcpy(&rfcomm_out_buffer[pos], data, len);
nobukuma 0:003889bc474f 551 pos += len;
nobukuma 0:003889bc474f 552
nobukuma 0:003889bc474f 553 // UIH frames only calc FCS over address + control (5.1.1)
nobukuma 0:003889bc474f 554 if ((control & 0xef) == BT_RFCOMM_UIH) {
nobukuma 0:003889bc474f 555 crc_fields = 2;
nobukuma 0:003889bc474f 556 }
nobukuma 0:003889bc474f 557 rfcomm_out_buffer[pos++] = crc8_calc(rfcomm_out_buffer+OFFSET, crc_fields); // calc fcs
nobukuma 0:003889bc474f 558 int retval = Socket_Send( source_cid, rfcomm_out_buffer, pos);
nobukuma 0:003889bc474f 559 #if OFFSET == 8
nobukuma 0:003889bc474f 560 delete[] rfcomm_out_buffer;
nobukuma 0:003889bc474f 561 #endif
nobukuma 0:003889bc474f 562 if (retval <= 0)
nobukuma 0:003889bc474f 563 return retval;
nobukuma 0:003889bc474f 564 return len;//return the size of the payload
nobukuma 0:003889bc474f 565 }
nobukuma 0:003889bc474f 566
nobukuma 0:003889bc474f 567 void _bt_rfcomm_send_sabm(uint16_t source_cid, uint8_t initiator, uint8_t dlci) {
nobukuma 0:003889bc474f 568 uint8_t address = (1 << 0) | (initiator << 1) | (dlci << 2);
nobukuma 0:003889bc474f 569 rfcomm_send_packet(source_cid, address, BT_RFCOMM_SABM, 0, NULL, 0);
nobukuma 0:003889bc474f 570 }
nobukuma 0:003889bc474f 571
nobukuma 0:003889bc474f 572 void _bt_rfcomm_send_uih_pn_command(uint16_t source_cid, uint8_t initiator, uint8_t dlci, uint16_t max_frame_size) {
nobukuma 0:003889bc474f 573 uint8_t payload[10];
nobukuma 0:003889bc474f 574 uint8_t address = (1 << 0) | (initiator << 1); // EA and C/R bit set - always server channel 0
nobukuma 0:003889bc474f 575 uint8_t pos = 0;
nobukuma 0:003889bc474f 576 payload[pos++] = BT_RFCOMM_PN_CMD;
nobukuma 0:003889bc474f 577 payload[pos++] = 8 << 1 | 1; // len
nobukuma 0:003889bc474f 578 payload[pos++] = dlci;
nobukuma 0:003889bc474f 579 payload[pos++] = 0xf0; // pre defined for Bluetooth, see 5.5.3 of TS 07.10 Adaption for RFCOMM
nobukuma 0:003889bc474f 580 payload[pos++] = 0; // priority
nobukuma 0:003889bc474f 581 payload[pos++] = 0; // max 60 seconds ack
nobukuma 0:003889bc474f 582 payload[pos++] = max_frame_size & 0xff; // max framesize low
nobukuma 0:003889bc474f 583 payload[pos++] = max_frame_size >> 8; // max framesize high
nobukuma 0:003889bc474f 584 payload[pos++] = 0x00; // number of retransmissions
nobukuma 0:003889bc474f 585 payload[pos++] = INITIAL_CREDITS; // unused error recovery window
nobukuma 0:003889bc474f 586 rfcomm_send_packet(source_cid, address, BT_RFCOMM_UIH, 0, (uint8_t *) payload, pos);
nobukuma 0:003889bc474f 587 }
nobukuma 0:003889bc474f 588
nobukuma 0:003889bc474f 589 void _bt_rfcomm_send_uih_data(uint16_t source_cid, uint8_t initiator, uint8_t channel, uint8_t *data, uint16_t len) {
nobukuma 0:003889bc474f 590 uint8_t address = (1 << 0) | (initiator << 1) | (!initiator << 2) | (channel << 3);
nobukuma 0:003889bc474f 591 rfcomm_send_packet(source_cid, address, BT_RFCOMM_UIH, 0, data, len);
nobukuma 0:003889bc474f 592 }
nobukuma 0:003889bc474f 593
nobukuma 0:003889bc474f 594 void _bt_rfcomm_send_uih_msc_cmd(uint16_t source_cid, uint8_t initiator, uint8_t dlci, uint8_t signals) {
nobukuma 0:003889bc474f 595 uint8_t address = (1 << 0) | (initiator << 1); // EA and C/R bit set - always server channel 0
nobukuma 0:003889bc474f 596 uint8_t payload[5];
nobukuma 0:003889bc474f 597 uint8_t pos = 0;
nobukuma 0:003889bc474f 598 payload[pos++] = BT_RFCOMM_MSC_CMD;
nobukuma 0:003889bc474f 599 payload[pos++] = 2 << 1 | 1; // len, should be adapted when adding break byte
nobukuma 0:003889bc474f 600 payload[pos++] = (1 << 0) | (1 << 1) | (dlci << 2); //C/R is always 1
nobukuma 0:003889bc474f 601 payload[pos++] = signals;
nobukuma 0:003889bc474f 602 // payload[pos++] = brk;
nobukuma 0:003889bc474f 603 rfcomm_send_packet(source_cid, address, BT_RFCOMM_UIH, 0, (uint8_t *) payload, pos);
nobukuma 0:003889bc474f 604 }
nobukuma 0:003889bc474f 605
nobukuma 0:003889bc474f 606 void _bt_rfcomm_send_uih_rpn_cmd(uint16_t source_cid, uint8_t initiator, uint8_t dlci, port_settings *val) {
nobukuma 0:003889bc474f 607 uint8_t address = (1 << 0) | (initiator << 1); // EA and C/R bit set - always server channel 0
nobukuma 0:003889bc474f 608 uint8_t payload[sizeof(port_settings)+3];
nobukuma 0:003889bc474f 609 uint8_t pos = 0;
nobukuma 0:003889bc474f 610 payload[pos++] = BT_RFCOMM_RPN_CMD;//type
nobukuma 0:003889bc474f 611 if (val) {
nobukuma 0:003889bc474f 612 payload[pos++] = ((1+sizeof(port_settings)) << 1) | 1; // len
nobukuma 0:003889bc474f 613 payload[pos++] = (1 << 0) | (1 << 1) | (dlci << 2);
nobukuma 0:003889bc474f 614 memcpy(payload+pos, (char*)val, sizeof(port_settings));
nobukuma 0:003889bc474f 615 pos += sizeof(port_settings);
nobukuma 0:003889bc474f 616 } else {
nobukuma 0:003889bc474f 617 payload[pos++] = (1 << 1) | 1; // len
nobukuma 0:003889bc474f 618 payload[pos++] = (1 << 0) | (1 << 1) | (dlci << 2);
nobukuma 0:003889bc474f 619 }
nobukuma 0:003889bc474f 620 rfcomm_send_packet(source_cid, address, BT_RFCOMM_UIH, 0, (uint8_t *) payload, pos);
nobukuma 0:003889bc474f 621 }
nobukuma 0:003889bc474f 622
nobukuma 0:003889bc474f 623 int set_remote_port_parameters(int socket, port_settings *p) {
nobukuma 0:003889bc474f 624 RFCOMMSocket* si = (RFCOMMSocket*)GetSocketInternal(socket);//gets the RFCOMM socket
nobukuma 0:003889bc474f 625 if (!si || si->ID != socket)
nobukuma 0:003889bc474f 626 return ERR_SOCKET_NOT_FOUND;
nobukuma 0:003889bc474f 627 return si->serdevice->set_remote_port_parameters(si->dlci, p);
nobukuma 0:003889bc474f 628 }
nobukuma 0:003889bc474f 629
nobukuma 0:003889bc474f 630
nobukuma 0:003889bc474f 631 /*
nobukuma 0:003889bc474f 632 * CRC (reversed crc) lookup table as calculated by the table generator in ETSI TS 101 369 V6.3.0.
nobukuma 0:003889bc474f 633 */
nobukuma 0:003889bc474f 634 static const uint8_t crc8table[256] = { /* reversed, 8-bit, poly=0x07 */
nobukuma 0:003889bc474f 635 0x00, 0x91, 0xE3, 0x72, 0x07, 0x96, 0xE4, 0x75, 0x0E, 0x9F, 0xED, 0x7C, 0x09, 0x98, 0xEA, 0x7B,
nobukuma 0:003889bc474f 636 0x1C, 0x8D, 0xFF, 0x6E, 0x1B, 0x8A, 0xF8, 0x69, 0x12, 0x83, 0xF1, 0x60, 0x15, 0x84, 0xF6, 0x67,
nobukuma 0:003889bc474f 637 0x38, 0xA9, 0xDB, 0x4A, 0x3F, 0xAE, 0xDC, 0x4D, 0x36, 0xA7, 0xD5, 0x44, 0x31, 0xA0, 0xD2, 0x43,
nobukuma 0:003889bc474f 638 0x24, 0xB5, 0xC7, 0x56, 0x23, 0xB2, 0xC0, 0x51, 0x2A, 0xBB, 0xC9, 0x58, 0x2D, 0xBC, 0xCE, 0x5F,
nobukuma 0:003889bc474f 639 0x70, 0xE1, 0x93, 0x02, 0x77, 0xE6, 0x94, 0x05, 0x7E, 0xEF, 0x9D, 0x0C, 0x79, 0xE8, 0x9A, 0x0B,
nobukuma 0:003889bc474f 640 0x6C, 0xFD, 0x8F, 0x1E, 0x6B, 0xFA, 0x88, 0x19, 0x62, 0xF3, 0x81, 0x10, 0x65, 0xF4, 0x86, 0x17,
nobukuma 0:003889bc474f 641 0x48, 0xD9, 0xAB, 0x3A, 0x4F, 0xDE, 0xAC, 0x3D, 0x46, 0xD7, 0xA5, 0x34, 0x41, 0xD0, 0xA2, 0x33,
nobukuma 0:003889bc474f 642 0x54, 0xC5, 0xB7, 0x26, 0x53, 0xC2, 0xB0, 0x21, 0x5A, 0xCB, 0xB9, 0x28, 0x5D, 0xCC, 0xBE, 0x2F,
nobukuma 0:003889bc474f 643 0xE0, 0x71, 0x03, 0x92, 0xE7, 0x76, 0x04, 0x95, 0xEE, 0x7F, 0x0D, 0x9C, 0xE9, 0x78, 0x0A, 0x9B,
nobukuma 0:003889bc474f 644 0xFC, 0x6D, 0x1F, 0x8E, 0xFB, 0x6A, 0x18, 0x89, 0xF2, 0x63, 0x11, 0x80, 0xF5, 0x64, 0x16, 0x87,
nobukuma 0:003889bc474f 645 0xD8, 0x49, 0x3B, 0xAA, 0xDF, 0x4E, 0x3C, 0xAD, 0xD6, 0x47, 0x35, 0xA4, 0xD1, 0x40, 0x32, 0xA3,
nobukuma 0:003889bc474f 646 0xC4, 0x55, 0x27, 0xB6, 0xC3, 0x52, 0x20, 0xB1, 0xCA, 0x5B, 0x29, 0xB8, 0xCD, 0x5C, 0x2E, 0xBF,
nobukuma 0:003889bc474f 647 0x90, 0x01, 0x73, 0xE2, 0x97, 0x06, 0x74, 0xE5, 0x9E, 0x0F, 0x7D, 0xEC, 0x99, 0x08, 0x7A, 0xEB,
nobukuma 0:003889bc474f 648 0x8C, 0x1D, 0x6F, 0xFE, 0x8B, 0x1A, 0x68, 0xF9, 0x82, 0x13, 0x61, 0xF0, 0x85, 0x14, 0x66, 0xF7,
nobukuma 0:003889bc474f 649 0xA8, 0x39, 0x4B, 0xDA, 0xAF, 0x3E, 0x4C, 0xDD, 0xA6, 0x37, 0x45, 0xD4, 0xA1, 0x30, 0x42, 0xD3,
nobukuma 0:003889bc474f 650 0xB4, 0x25, 0x57, 0xC6, 0xB3, 0x22, 0x50, 0xC1, 0xBA, 0x2B, 0x59, 0xC8, 0xBD, 0x2C, 0x5E, 0xCF
nobukuma 0:003889bc474f 651 };
nobukuma 0:003889bc474f 652
nobukuma 0:003889bc474f 653 #define CRC8_INIT 0xFF // Initial FCS value
nobukuma 0:003889bc474f 654 #define CRC8_OK 0xCF // Good final FCS value
nobukuma 0:003889bc474f 655 /*-----------------------------------------------------------------------------------*/
nobukuma 0:003889bc474f 656 uint8_t crc8(uint8_t *data, uint16_t len) {
nobukuma 0:003889bc474f 657 uint16_t count;
nobukuma 0:003889bc474f 658 uint8_t crc = CRC8_INIT;
nobukuma 0:003889bc474f 659 for (count = 0; count < len; count++)
nobukuma 0:003889bc474f 660 crc = crc8table[crc ^ data[count]];
nobukuma 0:003889bc474f 661 return crc;
nobukuma 0:003889bc474f 662 }
nobukuma 0:003889bc474f 663
nobukuma 0:003889bc474f 664 /*-----------------------------------------------------------------------------------*/
nobukuma 0:003889bc474f 665 uint8_t crc8_check(uint8_t *data, uint16_t len, uint8_t check_sum) {
nobukuma 0:003889bc474f 666 uint8_t crc;
nobukuma 0:003889bc474f 667
nobukuma 0:003889bc474f 668 crc = crc8(data, len);
nobukuma 0:003889bc474f 669
nobukuma 0:003889bc474f 670 crc = crc8table[crc ^ check_sum];
nobukuma 0:003889bc474f 671 if (crc == CRC8_OK)
nobukuma 0:003889bc474f 672 return 0; /* Valid */
nobukuma 0:003889bc474f 673 else
nobukuma 0:003889bc474f 674 return 1; /* Failed */
nobukuma 0:003889bc474f 675
nobukuma 0:003889bc474f 676 }
nobukuma 0:003889bc474f 677
nobukuma 0:003889bc474f 678 /*-----------------------------------------------------------------------------------*/
nobukuma 0:003889bc474f 679 uint8_t crc8_calc(uint8_t *data, uint16_t len) {
nobukuma 0:003889bc474f 680 /* Ones complement */
nobukuma 0:003889bc474f 681 return 0xFF - crc8(data, len);
nobukuma 0:003889bc474f 682 }