diff options
author | Jack Humbert <jack.humb@gmail.com> | 2015-10-27 14:52:18 -0400 |
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committer | Jack Humbert <jack.humb@gmail.com> | 2015-10-27 14:52:18 -0400 |
commit | d311fd8d1a0af3b767d26b520d399bf0db22f058 (patch) | |
tree | b9de5704143ac205b4e26222f9d7551e9b161924 /tmk_core/protocol/lufa/LUFA-git/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c | |
parent | a766918d5c48204375f4c207b30bbbf1389df14f (diff) | |
parent | 6f3141965e88c4ee0ebf7c18a243e4c2d9c5021b (diff) |
Merge pull request #34 from jackhumbert/tmk-master
merging from tmk, new_project script and template
Diffstat (limited to 'tmk_core/protocol/lufa/LUFA-git/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c')
-rw-r--r-- | tmk_core/protocol/lufa/LUFA-git/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/tmk_core/protocol/lufa/LUFA-git/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c b/tmk_core/protocol/lufa/LUFA-git/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c new file mode 100644 index 0000000000..f25c4754e2 --- /dev/null +++ b/tmk_core/protocol/lufa/LUFA-git/Demos/Device/LowLevel/RNDISEthernet/RNDISEthernet.c @@ -0,0 +1,294 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2014. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2014 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +/** \file + * + * Main source file for the RNDISEthernet demo. This file contains the main tasks of the demo and + * is responsible for the initial application hardware configuration. + */ + +#include "RNDISEthernet.h" + +/** Main program entry point. This routine configures the hardware required by the application, then + * enters a loop to run the application tasks in sequence. + */ +int main(void) +{ + SetupHardware(); + + /* Webserver Initialization */ + TCP_Init(); + Webserver_Init(); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + GlobalInterruptEnable(); + + for (;;) + { + Ethernet_Task(); + TCP_Task(); + RNDIS_Task(); + USB_USBTask(); + } +} + +/** Configures the board hardware and chip peripherals for the demo's functionality. */ +void SetupHardware(void) +{ +#if (ARCH == ARCH_AVR8) + /* Disable watchdog if enabled by bootloader/fuses */ + MCUSR &= ~(1 << WDRF); + wdt_disable(); + + /* Disable clock division */ + clock_prescale_set(clock_div_1); +#elif (ARCH == ARCH_XMEGA) + /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */ + XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU); + XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL); + + /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */ + XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ); + XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB); + + PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm; +#endif + + /* Hardware Initialization */ + LEDs_Init(); + Serial_Init(9600, false); + USB_Init(); + + /* Create a stdio stream for the serial port for stdin and stdout */ + Serial_CreateStream(NULL); +} + +/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and + * starts the library USB task to begin the enumeration and USB management process. + */ +void EVENT_USB_Device_Connect(void) +{ + /* Indicate USB enumerating */ + LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); +} + +/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via + * the status LEDs and stops all the relevant tasks. + */ +void EVENT_USB_Device_Disconnect(void) +{ + /* Indicate USB not ready */ + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +} + +/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration + * of the USB device after enumeration, and configures the RNDIS device endpoints and starts the relevant tasks. + */ +void EVENT_USB_Device_ConfigurationChanged(void) +{ + bool ConfigSuccess = true; + + /* Setup RNDIS Data Endpoints */ + ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_TX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1); + ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_RX_EPADDR, EP_TYPE_BULK, CDC_TXRX_EPSIZE, 1); + ConfigSuccess &= Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPADDR, EP_TYPE_INTERRUPT, CDC_NOTIFICATION_EPSIZE, 1); + + /* Indicate endpoint configuration success or failure */ + LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR); +} + +/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to + * the device from the USB host before passing along unhandled control requests to the library for processing + * internally. + */ +void EVENT_USB_Device_ControlRequest(void) +{ + /* Process RNDIS class commands */ + switch (USB_ControlRequest.bRequest) + { + case RNDIS_REQ_SendEncapsulatedCommand: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + Endpoint_ClearSETUP(); + + /* Read in the RNDIS message into the message buffer */ + Endpoint_Read_Control_Stream_LE(RNDISMessageBuffer, USB_ControlRequest.wLength); + Endpoint_ClearIN(); + + /* Process the RNDIS message */ + ProcessRNDISControlMessage(); + } + + break; + case RNDIS_REQ_GetEncapsulatedResponse: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + /* Check if a response to the last message is ready */ + if (!(MessageHeader->MessageLength)) + { + /* Set the response to a single 0x00 byte to indicate that no response is ready */ + RNDISMessageBuffer[0] = 0; + MessageHeader->MessageLength = 1; + } + + Endpoint_ClearSETUP(); + + /* Write the message response data to the endpoint */ + Endpoint_Write_Control_Stream_LE(RNDISMessageBuffer, MessageHeader->MessageLength); + Endpoint_ClearOUT(); + + /* Reset the message header once again after transmission */ + MessageHeader->MessageLength = 0; + } + + break; + } +} + +/** Task to manage the sending and receiving of encapsulated RNDIS data and notifications. This removes the RNDIS + * wrapper from received Ethernet frames and places them in the FrameIN global buffer, or adds the RNDIS wrapper + * to a frame in the FrameOUT global before sending the buffer contents to the host. + */ +void RNDIS_Task(void) +{ + /* Select the notification endpoint */ + Endpoint_SelectEndpoint(CDC_NOTIFICATION_EPADDR); + + /* Check if a message response is ready for the host */ + if (Endpoint_IsINReady() && ResponseReady) + { + USB_Request_Header_t Notification = (USB_Request_Header_t) + { + .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE), + .bRequest = RNDIS_NOTIF_ResponseAvailable, + .wValue = 0, + .wIndex = 0, + .wLength = 0, + }; + + /* Indicate that a message response is ready for the host */ + Endpoint_Write_Stream_LE(&Notification, sizeof(Notification), NULL); + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearIN(); + + /* Indicate a response is no longer ready */ + ResponseReady = false; + } + + /* Don't process the data endpoints until the system is in the data initialized state, and the buffer is free */ + if ((CurrRNDISState == RNDIS_Data_Initialized) && !(MessageHeader->MessageLength)) + { + /* Create a new packet header for reading/writing */ + RNDIS_Packet_Message_t RNDISPacketHeader; + + /* Select the data OUT endpoint */ + Endpoint_SelectEndpoint(CDC_RX_EPADDR); + + /* Check if the data OUT endpoint contains data, and that the IN buffer is empty */ + if (Endpoint_IsOUTReceived() && !(FrameIN.FrameLength)) + { + /* Read in the packet message header */ + Endpoint_Read_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL); + + /* Stall the request if the data is too large */ + if (RNDISPacketHeader.DataLength > ETHERNET_FRAME_SIZE_MAX) + { + Endpoint_StallTransaction(); + return; + } + + /* Read in the Ethernet frame into the buffer */ + Endpoint_Read_Stream_LE(FrameIN.FrameData, RNDISPacketHeader.DataLength, NULL); + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearOUT(); + + /* Store the size of the Ethernet frame */ + FrameIN.FrameLength = RNDISPacketHeader.DataLength; + } + + /* Select the data IN endpoint */ + Endpoint_SelectEndpoint(CDC_TX_EPADDR); + + /* Check if the data IN endpoint is ready for more data, and that the IN buffer is full */ + if (Endpoint_IsINReady() && FrameOUT.FrameLength) + { + /* Clear the packet header with all 0s so that the relevant fields can be filled */ + memset(&RNDISPacketHeader, 0, sizeof(RNDIS_Packet_Message_t)); + + /* Construct the required packet header fields in the buffer */ + RNDISPacketHeader.MessageType = REMOTE_NDIS_PACKET_MSG; + RNDISPacketHeader.MessageLength = (sizeof(RNDIS_Packet_Message_t) + FrameOUT.FrameLength); + RNDISPacketHeader.DataOffset = (sizeof(RNDIS_Packet_Message_t) - sizeof(RNDIS_Message_Header_t)); + RNDISPacketHeader.DataLength = FrameOUT.FrameLength; + + /* Send the packet header to the host */ + Endpoint_Write_Stream_LE(&RNDISPacketHeader, sizeof(RNDIS_Packet_Message_t), NULL); + + /* Send the Ethernet frame data to the host */ + Endpoint_Write_Stream_LE(FrameOUT.FrameData, RNDISPacketHeader.DataLength, NULL); + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearIN(); + + /* Indicate Ethernet OUT buffer no longer full */ + FrameOUT.FrameLength = 0; + } + } +} + +/** Ethernet frame processing task. This task checks to see if a frame has been received, and if so hands off the processing + * of the frame to the Ethernet processing routines. + */ +void Ethernet_Task(void) +{ + /* Task for Ethernet processing. Incoming ethernet frames are loaded into the FrameIN structure, and + outgoing frames should be loaded into the FrameOUT structure. Both structures can only hold a single + Ethernet frame at a time, so the FrameInBuffer bool is used to indicate when the buffers contain data. */ + + /* Device must be connected and configured for the task to run */ + if (USB_DeviceState != DEVICE_STATE_Configured) + return; + + /* Check if a frame has been written to the IN frame buffer */ + if (FrameIN.FrameLength) + { + /* Indicate packet processing started */ + LEDs_SetAllLEDs(LEDMASK_USB_BUSY); + + /* Process the ethernet frame - replace this with your own Ethernet handler code as desired */ + Ethernet_ProcessPacket(); + + /* Indicate packet processing complete */ + LEDs_SetAllLEDs(LEDMASK_USB_READY); + } +} + |