123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311 |
- #include "Benito.h"
- static RingBuffer_t USARTtoUSB_Buffer;
- static uint8_t USARTtoUSB_Buffer_Data[128];
- volatile struct
- {
- uint8_t ResetPulse;
- uint8_t TxLEDPulse;
- uint8_t RxLEDPulse;
- uint8_t PingPongLEDPulse;
- } PulseMSRemaining;
- uint8_t FlushPeriodRemaining = RECEIVE_BUFFER_FLUSH_MS;
- USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
- {
- .Config =
- {
- .ControlInterfaceNumber = INTERFACE_ID_CDC_CCI,
- .DataINEndpoint =
- {
- .Address = CDC_TX_EPADDR,
- .Size = CDC_TXRX_EPSIZE,
- .Banks = 1,
- },
- .DataOUTEndpoint =
- {
- .Address = CDC_RX_EPADDR,
- .Size = CDC_TXRX_EPSIZE,
- .Banks = 1,
- },
- .NotificationEndpoint =
- {
- .Address = CDC_NOTIFICATION_EPADDR,
- .Size = CDC_NOTIFICATION_EPSIZE,
- .Banks = 1,
- },
- },
- };
- int main(void)
- {
- SetupHardware();
- RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
- GlobalInterruptEnable();
- for (;;)
- {
-
- if ((UCSR1A & (1 << UDRE1)) && CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface))
- {
- UDR1 = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
- LEDs_TurnOnLEDs(LEDMASK_TX);
- PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
- }
-
- if (TIFR0 & (1 << OCF0A))
- {
-
- TIFR0 |= (1 << TOV0);
-
- if (PulseMSRemaining.ResetPulse && !(--PulseMSRemaining.ResetPulse))
- {
- LEDs_TurnOffLEDs(LEDMASK_BUSY);
- AVR_RESET_LINE_DDR &= ~AVR_RESET_LINE_MASK;
- }
-
- if (PulseMSRemaining.PingPongLEDPulse && !(--PulseMSRemaining.PingPongLEDPulse))
- {
- LEDs_ToggleLEDs(LEDMASK_TX | LEDMASK_RX);
- PulseMSRemaining.PingPongLEDPulse = PING_PONG_LED_PULSE_MS;
- }
-
- if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
- LEDs_TurnOffLEDs(LEDMASK_TX);
-
- if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
- LEDs_TurnOffLEDs(LEDMASK_RX);
-
- uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
- if (!(--FlushPeriodRemaining) || (BufferCount > 200))
- {
- FlushPeriodRemaining = RECEIVE_BUFFER_FLUSH_MS;
-
- if (BufferCount)
- {
- LEDs_TurnOnLEDs(LEDMASK_RX);
- PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
- }
-
- while (BufferCount--)
- {
-
- if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface,
- RingBuffer_Peek(&USARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
- {
- break;
- }
-
- RingBuffer_Remove(&USARTtoUSB_Buffer);
- }
- }
- }
- CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
- USB_USBTask();
- }
- }
- void SetupHardware(void)
- {
- #if (ARCH == ARCH_AVR8)
-
- MCUSR &= ~(1 << WDRF);
- wdt_disable();
-
- clock_prescale_set(clock_div_1);
- #endif
-
- LEDs_Init();
- USB_Init();
-
- OCR0A = (F_CPU / 64 / 1000);
- TCCR0A = (1 << WGM01);
- TCCR0B = ((1 << CS01) | (1 << CS00));
-
- AVR_RESET_LINE_PORT &= ~AVR_RESET_LINE_MASK;
- AVR_RESET_LINE_DDR &= ~AVR_RESET_LINE_MASK;
- }
- void EVENT_USB_Device_Connect(void)
- {
- PulseMSRemaining.PingPongLEDPulse = PING_PONG_LED_PULSE_MS;
- LEDs_SetAllLEDs(LEDMASK_TX);
- }
- void EVENT_USB_Device_Disconnect(void)
- {
- PulseMSRemaining.PingPongLEDPulse = 0;
- LEDs_SetAllLEDs(LEDS_NO_LEDS);
- }
- void EVENT_USB_Device_ConfigurationChanged(void)
- {
- bool ConfigSuccess = true;
- ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
- PulseMSRemaining.PingPongLEDPulse = 0;
- LEDs_SetAllLEDs(ConfigSuccess ? LEDS_NO_LEDS : LEDMASK_ERROR);
- }
- void EVENT_USB_Device_ControlRequest(void)
- {
- CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
- }
- void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
- {
- uint8_t ConfigMask = 0;
- switch (CDCInterfaceInfo->State.LineEncoding.ParityType)
- {
- case CDC_PARITY_Odd:
- ConfigMask = ((1 << UPM11) | (1 << UPM10));
- break;
- case CDC_PARITY_Even:
- ConfigMask = (1 << UPM11);
- break;
- }
- if (CDCInterfaceInfo->State.LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)
- ConfigMask |= (1 << USBS1);
- switch (CDCInterfaceInfo->State.LineEncoding.DataBits)
- {
- case 6:
- ConfigMask |= (1 << UCSZ10);
- break;
- case 7:
- ConfigMask |= (1 << UCSZ11);
- break;
- case 8:
- ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));
- break;
- }
-
- UCSR1B = 0;
- UCSR1A = 0;
- UCSR1C = 0;
-
- UBRR1 = SERIAL_2X_UBBRVAL(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);
-
- UCSR1C = ConfigMask;
- UCSR1A = (1 << U2X1);
- UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));
- }
- ISR(USART1_RX_vect, ISR_BLOCK)
- {
- uint8_t ReceivedByte = UDR1;
- if (USB_DeviceState == DEVICE_STATE_Configured)
- RingBuffer_Insert(&USARTtoUSB_Buffer, ReceivedByte);
- }
- void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
- {
- static bool PreviousDTRState = false;
- bool CurrentDTRState = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR);
-
- if (!(PreviousDTRState) && CurrentDTRState)
- {
- LEDs_SetAllLEDs(LEDMASK_BUSY);
- AVR_RESET_LINE_DDR |= AVR_RESET_LINE_MASK;
- PulseMSRemaining.ResetPulse = AVR_RESET_PULSE_MS;
- }
- PreviousDTRState = CurrentDTRState;
- }
|