568 lines
20 KiB
C
568 lines
20 KiB
C
/*
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Copyright (c) 2014 NicoHood
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See the readme for credit to other people.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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/** \file
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*
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* Main source file for the VirtualSerialMouse demo. This file contains the main tasks of
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* the demo and is responsible for the initial application hardware configuration.
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*/
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#include "Hoodloader.h"
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/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */
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//new important ram fix!! <--
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static RingBuff_t USBtoUSART_Buffer;
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/** Circular buffer to hold data from the serial port before it is sent to the host. */
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static RingBuff_t USARTtoUSB_Buffer;
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/** Pulse generation counters to keep track of the number of milliseconds remaining for each pulse type */
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//new important ram fix!! <--
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static volatile struct{
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uint8_t TxLEDPulse; /**< Milliseconds remaining for data Tx LED pulse */
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uint8_t RxLEDPulse; /**< Milliseconds remaining for data Rx LED pulse */
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//uint8_t PingPongLEDPulse; /**< Milliseconds remaining for enumeration Tx/Rx ping-pong LED pulse */
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} PulseMSRemaining;
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/** LUFA CDC Class driver interface configuration and state information. This structure is
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* passed to all CDC Class driver functions, so that multiple instances of the same class
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* within a device can be differentiated from one another.
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*/
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USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
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{
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.Config =
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{
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.ControlInterfaceNumber = INTERFACE_ID_CDC_CCI,
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.DataINEndpoint =
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{
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.Address = CDC_TX_EPADDR,
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.Size = CDC_TXRX_EPSIZE,
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.Banks = 1,
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},
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.DataOUTEndpoint =
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{
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.Address = CDC_RX_EPADDR,
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.Size = CDC_TXRX_EPSIZE,
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.Banks = 1,
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},
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.NotificationEndpoint =
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{
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.Address = CDC_NOTIFICATION_EPADDR,
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.Size = CDC_NOTIFICATION_EPSIZE,
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.Banks = 1,
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},
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},
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};
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static struct{
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// variable to perform a "HID flush" and to indicate what report should be written down
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uint8_t ID;
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// length of the report
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uint8_t length;
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// number of bytes received
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uint8_t recvlength;
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// should the report been written even if nothing changed? important for mouse
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//bool forcewrite; // always true, removed
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} HIDReportState;
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/** LUFA HID Class driver interface configuration and state information. This structure is
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* passed to all HID Class driver functions, so that multiple instances of the same class
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* within a device can be differentiated from one another.
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*/
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USB_ClassInfo_HID_Device_t Device_HID_Interface =
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{
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.Config =
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{
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.InterfaceNumber = INTERFACE_ID_HID,
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.ReportINEndpoint =
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{
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.Address = HID_IN_EPADDR,
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.Size = HID_EPSIZE,
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.Banks = 1,
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},
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.PrevReportINBuffer = NULL,
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.PrevReportINBufferSize = sizeof(HID_HIDReport_Data_t),
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},
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};
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/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
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static uint8_t HIDReportBuffer[sizeof(HID_HIDReport_Data_t)];
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/** Main program entry point. This routine contains the overall program flow, including initial
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* setup of all components and the main program loop.
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*/
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int main(void)
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{
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SetupHardware();
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RingBuffer_InitBuffer(&USBtoUSART_Buffer);
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RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
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GlobalInterruptEnable();
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// HID Setup
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HIDReportState.recvlength = 0;
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HIDReportState.ID = 0;
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// Debug
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//DDRB |= 0x08; //led out
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//DDRB |= 0x02; //led out
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//DDRB |= 0x80; // DEBUG <--
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//DDRB &=~0x40;
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//PORTB |= 0x40;
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for (;;)
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{
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// Only try to read in bytes from the CDC interface if the transmit buffer is not full
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if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
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{
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int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
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// Read bytes from the USB OUT endpoint into the USART transmit buffer
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if (!(ReceivedByte < 0))
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RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
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}
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// Check if the UART receive buffer flush timer has expired or the buffer is nearly full
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RingBuff_Count_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
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if ((TIFR0 & (1 << TOV0)) || (BufferCount > BUFFER_NEARLY_FULL))
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{
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TIFR0 |= (1 << TOV0);
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if (USARTtoUSB_Buffer.Count) {
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LEDs_TurnOnLEDs(LEDMASK_TX);
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PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
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}
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// Read bytes from the USART receive buffer
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while (BufferCount--){
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//new Protocol check<--
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// if a reading finished succesfull without valid checksum or an error occured (ignore a reset)
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if (NHPgetErrorLevel()&(~NHP_INPUT_RESET)){
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// check if previous reading was a valid Control Address and write it down
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if (HIDReportState.ID)
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checkNHPControlAddressError();
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// Write the last invalid signals. This will not write a possible new lead to keep
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// it for the next reading. This is implemented in the Protocol itself.
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writeNHPreadBuffer(NHPreadlength);
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}
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//read newest byte and check for Protocol
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RingBuff_Data_t b = RingBuffer_Remove(&USARTtoUSB_Buffer);
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checkNHPProtocol(b);
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}
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// if reading has timed out write the buffers down the serial and turn off the led
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if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse)){
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// check if previous reading was a valid Control Address and write it down
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if (HIDReportState.ID)
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checkNHPControlAddressError();
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// only write if there is input (ignore a reset)
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if (!(NHPgetErrorLevel() & NHP_INPUT_RESET)){
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// Lead errors are not in the buff length to keep them for next reading.
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// But we want to write it down now after timeout.
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uint8_t len = NHPreadlength;
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if (NHPgetErrorLevel()& NHP_ERR_LEAD) len++;
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writeNHPreadBuffer(len);
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}
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// do not write again in the while loop above anyways
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NHPreset();
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// Turn off TX LED(s) once the TX pulse period has elapsed
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LEDs_TurnOffLEDs(LEDMASK_TX);
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}
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// Turn off RX LED(s) once the RX pulse period has elapsed
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if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
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LEDs_TurnOffLEDs(LEDMASK_RX);
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}
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// Load the next byte from the USART transmit buffer into the USART
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if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer))) {
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Serial_SendByte(RingBuffer_Remove(&USBtoUSART_Buffer)); //<--new syntax
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LEDs_TurnOnLEDs(LEDMASK_RX);
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PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
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}
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//new Send reports <--
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CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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wdt_disable();
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/* Hardware Initialization */
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Serial_Init(115200, true);
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/* Must turn off USART before reconfiguring it, otherwise incorrect operation may occur */
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// Added for correct Serial connection at baud 115200 <--
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PORTD |= (1 << PD3); // Turn ON Tx while USART is being reconfigured
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UCSR1B = 0;
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UCSR1A = 0;
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UCSR1C = 0;
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// these are values for 115200 i just read them from manual change
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// its needed to start with baud 115200 on powerup
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UCSR1C = ((1 << UCSZ11) | (1 << UCSZ10)); //C: 0x06
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UCSR1A = (1 << U2X1); //A: 0x02
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UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1)); //B: 0x98
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PORTD &= ~(1 << PD3); // And turn OFF Tx once USART has been reconfigured (this is overridden by TXEN)
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LEDs_Init();
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USB_Init();
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/* Start the flush timer so that overflows occur rapidly to push received bytes to the USB interface */
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TCCR0B = (1 << CS02);
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/* Pull target /RESET line high */
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AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
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AVR_RESET_LINE_DDR |= AVR_RESET_LINE_MASK;
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// Hardwaresetup to turn off the HID function with shorting the MOSI pin with GND next to it
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AVR_NO_HID_DDR &= ~AVR_NO_HID_MASK; // Input
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AVR_NO_HID_PORT |= AVR_NO_HID_MASK; // Pullup
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}
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/** Writes the NHP read buffer with the given length */
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void writeNHPreadBuffer(uint8_t length){
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for (int i = 0; i < length; i++){
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bool CurrentDTRState = (VirtualSerial_CDC_Interface.State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR); //new <--
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if (CurrentDTRState)
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CDC_Device_SendByte(&VirtualSerial_CDC_Interface, NHPreadbuffer[i]);
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}
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}
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/** Checks for a valid protocol input and writes HID report */
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void checkNHPProtocol(RingBuff_Data_t input){
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if (NHPreadChecksum(input)){
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// only process signal if HID is turned on
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// make sure that no report is still active (like holding down a keyboard key)!
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// Or dont recognize if baud is not 115200 to ensure that there is no conflict with other bauds
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// Secound != 0 is for starting from powerup when no lineEncoding is set
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if (!(AVR_NO_HID_PIN & AVR_NO_HID_MASK) ||
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(VirtualSerial_CDC_Interface.State.LineEncoding.BaudRateBPS != 115200 && VirtualSerial_CDC_Interface.State.LineEncoding.BaudRateBPS != 0))
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return;
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// nearly the same priciple like the Protocol itself: check for control address
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if (NHPgetAddress() == NHP_ADDRESS_CONTROL && NHPgetChecksumData1() & NHP_USAGE_ARDUINOHID){
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// check if previous reading was a valid Control Address and write it down
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if (HIDReportState.ID)
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checkNHPControlAddressError();
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// get the new report ID and reset the buffer
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HIDReportState.ID = NHPgetChecksumData0();
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HIDReportState.recvlength = 0;
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memset(HIDReportBuffer, 0, sizeof(HIDReportBuffer));
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/* Determine which interface must have its report generated */
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switch (HIDReportState.ID){
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case HID_REPORTID_MouseReport:
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HIDReportState.length = sizeof(HID_MouseReport_Data_t);
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//HIDReportState.forcewrite = true;
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break;
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case HID_REPORTID_KeyboardReport:
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HIDReportState.length = sizeof(HID_KeyboardReport_Data_t);
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//HIDReportState.forcewrite = true; // set to true because of some bugs with joystick 1+2
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break;
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case HID_REPORTID_MediaReport:
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HIDReportState.length = sizeof(HID_MediaReport_Data_t);
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//HIDReportState.forcewrite = true;
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break;
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case HID_REPORTID_SystemReport:
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HIDReportState.length = sizeof(HID_SystemReport_Data_t);
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//HIDReportState.forcewrite = true;
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break;
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case HID_REPORTID_Gamepad1Report:
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case HID_REPORTID_Gamepad2Report:
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HIDReportState.length = sizeof(HID_GamepadReport_Data_t);
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//HIDReportState.forcewrite = true;
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break;
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case HID_REPORTID_Joystick1Report:
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case HID_REPORTID_Joystick2Report:
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HIDReportState.length = sizeof(HID_JoystickReport_Data_t);
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//HIDReportState.forcewrite = true;
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break;
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// not supported yet <--
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//case HID_REPORTID_MidiReport:
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//HID_Report_Size=sizeof(HID_MidiReport_Data_t);
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//HID_Report_ForceWrite=false;
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//break;
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default:
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// error
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checkNHPControlAddressError();
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break;
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} //end switch
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// The Protocol received a valid signal with inverse checksum
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// Do not write the buff in the loop above or below, filter it out
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NHPreset();
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} // end if control address byte
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else if (HIDReportState.ID){
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// check if the new Address is in correct order of HID reports.
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// the first 2 bytes are sent with Address 2 and so on.
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if (NHPgetAddress() == (((HIDReportState.recvlength + 2) / 2) + 1)){
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// save the first byte
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HIDReportBuffer[HIDReportState.recvlength++] = NHPgetChecksumData0();
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// if there is another byte we need (for odd max HID reports important
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// to not write over the buff array)
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if (HIDReportState.length != HIDReportState.recvlength)
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HIDReportBuffer[HIDReportState.recvlength++] = NHPgetChecksumData1();
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// we are ready to submit the new report to the usb host
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if (HIDReportState.length == HIDReportState.recvlength){
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// TODO timeout? <--
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while (HIDReportState.ID)
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HID_Device_USBTask(&Device_HID_Interface);
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}
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// The Protocol received a valid signal with inverse checksum
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// Do not write the buff in the loop above or below, filter it out
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NHPreset();
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}
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// we received a corrupt data packet
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else
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// check if previous reading was a valid Control Address and write it down
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checkNHPControlAddressError();
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} // end if HIDReportState.ID
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else {
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// just a normal Protocol outside our control address
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}
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} // end if readChecksum
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}
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void checkNHPControlAddressError(void){
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// only write if it was just before, maybe it was a random valid address
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// but if we already received some data we handle this as corrupted data and just
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// discard all the bytes
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if (HIDReportState.recvlength == 0){
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// write the cached buffer (recreate protocol)
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uint8_t buff[6];
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uint8_t length = NHPwriteChecksum(NHP_ADDRESS_CONTROL, (NHP_USAGE_ARDUINOHID << 8) | HIDReportState.ID, buff);
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for (int i = 0; i < length; i++){
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bool CurrentDTRState = (VirtualSerial_CDC_Interface.State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR); //new <--
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if (CurrentDTRState)
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CDC_Device_SendByte(&VirtualSerial_CDC_Interface, buff[i]);
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}
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}
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// reset any pending HID reports
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HIDReportState.ID = 0;
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HIDReportState.recvlength = 0; //just to be sure if you call HID_Task by accident
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}
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/** Event handler for the library USB Connection event. */
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void EVENT_USB_Device_Connect(void)
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{
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//LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the library USB Disconnection event. */
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void EVENT_USB_Device_Disconnect(void)
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{
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//LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the library USB Configuration Changed event. */
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void EVENT_USB_Device_ConfigurationChanged(void) //<--new
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{
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bool ConfigSuccess = true;
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ConfigSuccess &= HID_Device_ConfigureEndpoints(&Device_HID_Interface);
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ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
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// This seems to be for the HID to get accurate reports
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USB_Device_EnableSOFEvents(); //<--new
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// Turn off Leds if everything is okay
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LEDs_SetAllLEDs(ConfigSuccess ? LEDS_NO_LEDS : LEDS_ALL_LEDS); //<--new
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}
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/** Event handler for the library USB Unhandled Control Request event. */
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void EVENT_USB_Device_UnhandledControlRequest(void)
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{
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CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
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}
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/** Event handler for the CDC Class driver Line Encoding Changed event.
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*
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* \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced
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*/
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void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
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{
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uint8_t ConfigMask = 0;
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switch (CDCInterfaceInfo->State.LineEncoding.ParityType)
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{
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case CDC_PARITY_Odd:
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ConfigMask = ((1 << UPM11) | (1 << UPM10));
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break;
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case CDC_PARITY_Even:
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ConfigMask = (1 << UPM11);
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break;
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}
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if (CDCInterfaceInfo->State.LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)
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ConfigMask |= (1 << USBS1);
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switch (CDCInterfaceInfo->State.LineEncoding.DataBits)
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{
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case 6:
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ConfigMask |= (1 << UCSZ10);
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break;
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case 7:
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ConfigMask |= (1 << UCSZ11);
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break;
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case 8:
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ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));
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break;
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}
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/* Must turn off USART before reconfiguring it, otherwise incorrect operation may occur */
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PORTD |= (1 << PD3); // Turn ON Tx while USART is being reconfigured
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UCSR1B = 0;
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UCSR1A = 0;
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UCSR1C = 0;
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/* Special case 57600 baud for compatibility with the ATmega328 bootloader. */
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UBRR1 = (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS == 57600)
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? SERIAL_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS)
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: SERIAL_2X_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
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UCSR1C = ConfigMask;
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UCSR1A = (CDCInterfaceInfo->State.LineEncoding.BaudRateBPS == 57600) ? 0 : (1 << U2X1);
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UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));
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PORTD &= ~(1 << PD3); // And turn OFF Tx once USART has been reconfigured (this is overridden by TXEN)
|
|
}
|
|
|
|
/** ISR to manage the reception of data from the serial port, placing received bytes into a circular buffer
|
|
* for later transmission to the host.
|
|
*/
|
|
ISR(USART1_RX_vect, ISR_BLOCK)
|
|
{
|
|
uint8_t ReceivedByte = UDR1;
|
|
|
|
if (USB_DeviceState == DEVICE_STATE_Configured)
|
|
RingBuffer_Insert(&USARTtoUSB_Buffer, ReceivedByte);
|
|
}
|
|
|
|
/** Event handler for the CDC Class driver Host-to-Device Line Encoding Changed event.
|
|
*
|
|
* \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced
|
|
*/
|
|
void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
|
|
{
|
|
bool CurrentDTRState = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR);
|
|
|
|
if (CurrentDTRState){
|
|
AVR_RESET_LINE_PORT &= ~AVR_RESET_LINE_MASK;
|
|
}
|
|
else{
|
|
AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
|
|
LEDs_SetAllLEDs(LEDS_NO_LEDS); //<--new
|
|
}
|
|
}
|
|
|
|
/** Event handler for the library USB Control Request reception event. */
|
|
void EVENT_USB_Device_ControlRequest(void)
|
|
{
|
|
CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
|
|
HID_Device_ProcessControlRequest(&Device_HID_Interface); //<--new
|
|
}
|
|
|
|
/** Event handler for the USB device Start Of Frame event. */
|
|
void EVENT_USB_Device_StartOfFrame(void)
|
|
{
|
|
HID_Device_MillisecondElapsed(&Device_HID_Interface);
|
|
}
|
|
|
|
/** HID class driver callback function for the creation of HID reports to the host.
|
|
*
|
|
* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
|
|
* \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
|
|
* \param[in] ReportType Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
|
|
* \param[out] ReportData Pointer to a buffer where the created report should be stored
|
|
* \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent)
|
|
*
|
|
* \return Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent
|
|
*/
|
|
bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
|
|
uint8_t* const ReportID,
|
|
const uint8_t ReportType,
|
|
void* ReportData,
|
|
uint16_t* const ReportSize)
|
|
{
|
|
//write report and reset ID
|
|
memcpy(ReportData, HIDReportBuffer, HIDReportState.length);
|
|
*ReportID = HIDReportState.ID;
|
|
*ReportSize = HIDReportState.length;
|
|
HIDReportState.ID = 0;
|
|
HIDReportState.recvlength = 0; //just to be sure if you call HID_Task by accident
|
|
// always return true, because we cannot compare with >1 report due to ram limit
|
|
// this will forcewrite the report everytime
|
|
return true;
|
|
}
|
|
|
|
/** HID class driver callback function for the processing of HID reports from the host.
|
|
*
|
|
* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
|
|
* \param[in] ReportID Report ID of the received report from the host
|
|
* \param[in] ReportType The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
|
|
* \param[in] ReportData Pointer to a buffer where the received report has been stored
|
|
* \param[in] ReportSize Size in bytes of the received HID report
|
|
*/
|
|
void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
|
|
const uint8_t ReportID,
|
|
const uint8_t ReportType,
|
|
const void* ReportData,
|
|
const uint16_t ReportSize)
|
|
{
|
|
// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
|
|
// uint8_t* LEDReport = (uint8_t*)ReportData;
|
|
}
|
|
|