diff options
Diffstat (limited to 'Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c')
| -rw-r--r-- | Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c | 111 |
1 files changed, 83 insertions, 28 deletions
diff --git a/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c b/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c index c7b3e8d8d..271f2dc28 100644 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c +++ b/Demos/Host/Incomplete/BluetoothHost/Lib/RFCOMM.c @@ -73,6 +73,32 @@ void RFCOMM_Initialize(void) RFCOMM_Channels[i].State = RFCOMM_Channel_Closed; } +void RFCOMM_ServiceChannels(Bluetooth_Channel_t* const BluetoothChannel) +{ + for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) + { + RFCOMM_Channel_t* RFCOMMChannel = &RFCOMM_Channels[i]; + + if (RFCOMMChannel->State == RFCOMM_Channel_Configure) + { + /* Check if the local signals have not yet been sent on the current channel */ + if (!(RFCOMMChannel->ConfigFlags & RFCOMM_CONFIG_LOCALSIGNALSSENT)) + { + /* Indicate that the local signals have been sent, transmit them to the remote device */ + RFCOMMChannel->ConfigFlags |= RFCOMM_CONFIG_LOCALSIGNALSSENT; + RFCOMM_SendChannelSignals(RFCOMMChannel, BluetoothChannel); + } + + /* If signals have been configured in both directions, progress to the open state */ + if ((RFCOMMChannel->ConfigFlags & (RFCOMM_CONFIG_REMOTESIGNALS | RFCOMM_CONFIG_LOCALSIGNALS)) == + (RFCOMM_CONFIG_REMOTESIGNALS | RFCOMM_CONFIG_LOCALSIGNALS)) + { + RFCOMMChannel->State = RFCOMM_Channel_Open; + } + } + } +} + void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel) { const RFCOMM_Header_t* FrameHeader = (const RFCOMM_Header_t*)Data; @@ -103,6 +129,28 @@ void RFCOMM_ProcessPacket(void* Data, Bluetooth_Channel_t* const Channel) } } +void RFCOMM_SendChannelSignals(const RFCOMM_Channel_t* const RFCOMMChannel, Bluetooth_Channel_t* const BluetoothChannel) +{ + BT_RFCOMM_DEBUG(1, ">> MSC Command"); + BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", RFCOMMChannel->DLCI); + + struct + { + RFCOMM_Command_t CommandHeader; + uint8_t Length; + RFCOMM_MSC_Parameters_t Params; + } MSCommand; + + MSCommand.CommandHeader = (RFCOMM_Command_t){.Command = RFCOMM_Control_ModemStatus, .EA = true, .CR = true}; + MSCommand.Length = (sizeof(MSCommand.Params) << 1) | 0x01; + MSCommand.Params.Channel = (RFCOMM_Address_t){.DLCI = RFCOMMChannel->DLCI, .EA = true, .CR = true}; + MSCommand.Params.Signals = RFCOMMChannel->Local.Signals; + MSCommand.Params.BreakSignal = RFCOMMChannel->Local.BreakSignal; + + /* Send the MSC command to the remote device */ + RFCOMM_SendFrame(RFCOMM_CONTROL_DLCI, true, RFCOMM_Frame_UIH, sizeof(MSCommand), &MSCommand, BluetoothChannel); +} + RFCOMM_Channel_t* RFCOMM_GetChannelData(const uint8_t DLCI) { /* Search through the RFCOMM channel list, looking for the specified channel */ @@ -155,12 +203,7 @@ void RFCOMM_SendFrame(const uint8_t DLCI, const bool CommandResponse, const uint /* Set the frame header values to the specified address and frame type */ ResponsePacket.FrameHeader.Control = Control; - ResponsePacket.FrameHeader.Address = (RFCOMM_Address_t) - { - .EA = true, - .CR = CommandResponse, - .DLCI = DLCI, - }; + ResponsePacket.FrameHeader.Address = (RFCOMM_Address_t){.DLCI = DLCI, .EA = true, .CR = CommandResponse}; /* Set the lower 7 bits of the packet length */ ResponsePacket.Size[0] = (DataLen << 1); @@ -224,34 +267,46 @@ static void RFCOMM_ProcessSABM(const RFCOMM_Address_t* const FrameAddress, Bluet { BT_RFCOMM_DEBUG(1, "<< SABM Received"); BT_RFCOMM_DEBUG(2, "-- DLCI 0x%02X", FrameAddress->DLCI); + + RFCOMM_Channel_t* RFCOMMChannel; - /* Find a free entry in the RFCOMM channel multiplexer state array */ - for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) + if (FrameAddress->DLCI != RFCOMM_CONTROL_DLCI) { - RFCOMM_Channel_t* CurrRFCOMMChannel = &RFCOMM_Channels[i]; - - /* If the channel's state is closed, the channel state entry is free */ - if (CurrRFCOMMChannel->State == RFCOMM_Channel_Closed) + /* Find a free entry in the RFCOMM channel multiplexer state array */ + for (uint8_t i = 0; i < RFCOMM_MAX_OPEN_CHANNELS; i++) { - CurrRFCOMMChannel->DLCI = FrameAddress->DLCI; - CurrRFCOMMChannel->State = RFCOMM_Channel_Open; - CurrRFCOMMChannel->Priority = 7 + (CurrRFCOMMChannel->DLCI >> 3) + ((CurrRFCOMMChannel->DLCI >> 3) * 7); - CurrRFCOMMChannel->MTU = 0xFFFF; - CurrRFCOMMChannel->Remote.Signals = 0 | (1 << 0); - CurrRFCOMMChannel->Remote.BreakSignal = 0 | (1 << 0); - CurrRFCOMMChannel->Local.Signals = RFCOMM_SIGNAL_RTC | RFCOMM_SIGNAL_RTR | RFCOMM_SIGNAL_DV | (1 << 0); - CurrRFCOMMChannel->Local.BreakSignal = 0 | (1 << 0); - - BT_RFCOMM_DEBUG(1, ">> UA Sent"); - RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel); - return; + /* If the channel's state is closed, the channel state entry is free */ + if (RFCOMM_Channels[i].State == RFCOMM_Channel_Closed) + { + RFCOMMChannel = &RFCOMM_Channels[i]; + RFCOMMChannel->DLCI = FrameAddress->DLCI; + RFCOMMChannel->State = RFCOMM_Channel_Configure; + RFCOMMChannel->Priority = 7 + (RFCOMMChannel->DLCI & 0xF8); + RFCOMMChannel->MTU = 0xFFFF; + RFCOMMChannel->Remote.Signals = 0 | (1 << 0); + RFCOMMChannel->Remote.BreakSignal = 0 | (1 << 0); + RFCOMMChannel->Local.Signals = RFCOMM_SIGNAL_RTC | RFCOMM_SIGNAL_RTR | RFCOMM_SIGNAL_DV | (1 << 0); + RFCOMMChannel->Local.BreakSignal = 0 | (1 << 0); + RFCOMMChannel->ConfigFlags = 0; + break; + } } } + + if (RFCOMMChannel || (FrameAddress->DLCI == RFCOMM_CONTROL_DLCI)) + { + BT_RFCOMM_DEBUG(1, ">> UA Sent"); + + /* Free channel found, or request was to the control channel - accept SABM by sending a UA frame */ + RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_UA | FRAME_POLL_FINAL), 0, NULL, Channel); + } + else + { + BT_RFCOMM_DEBUG(1, ">> DM Sent"); - BT_RFCOMM_DEBUG(1, ">> DM Sent"); - - /* No free channel in the multiplexer - decline the SABM by sending a DM frame */ - RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_DM | FRAME_POLL_FINAL), 0, NULL, Channel); + /* No free channel in the multiplexer - decline the SABM by sending a DM frame */ + RFCOMM_SendFrame(FrameAddress->DLCI, true, (RFCOMM_Frame_DM | FRAME_POLL_FINAL), 0, NULL, Channel); + } } static void RFCOMM_ProcessUA(const RFCOMM_Address_t* const FrameAddress, Bluetooth_Channel_t* const Channel) |