/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
for (;;)
{
/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
if (!(ReceivedByte < 0))
RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
}
/* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
if (BufferCount)
{
Endpoint_SelectEndpoint(VirtualSerial_CDC_Interface.Config.DataINEndpoint.Address);
/* Check if a packet is already enqueued to the host - if so, we shouldn't try to send more data
* until it completes as there is a chance nothing is listening and a lengthy timeout could occur */
if (Endpoint_IsINReady())
{
/* Never send more than one bank size less one byte to the host at a time, so that we don't block
* while a Zero Length Packet (ZLP) to terminate the transfer is sent if the host isn't listening */
uint8_t BytesToSend = MIN(BufferCount, (CDC_TXRX_EPSIZE - 1));
/* Read bytes from the USART receive buffer into the USB IN endpoint */
while (BytesToSend--)
{
/* Try to send the next byte of data to the host, abort if there is an error without dequeuing */
if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface,
RingBuffer_Peek(&USARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
{
break;
}
/* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */
RingBuffer_Remove(&USARTtoUSB_Buffer);
}
}
}
/* Load the next byte from the USART transmit buffer into the USART */
if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer)))
Serial_SendByte(RingBuffer_Remove(&USBtoUSART_Buffer));
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
RingBuffer_InitBuffer(&ToUSB_Buffer, ToUSB_Buffer_Data, sizeof(ToUSB_Buffer_Data));
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
sei();
for (;;)
{
/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
if (!(ReceivedByte < 0))
RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
}
/* Load the next byte from the USART transmit buffer into the USART */
if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer)))
Serial_SendByte(RingBuffer_Remove(&USBtoUSART_Buffer));
cdc_send_USB_data(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
bool ConfigSuccess = true;
/* Configure the device endpoints according to the selected mode */
if (CurrentFirmwareMode == MODE_USART_BRIDGE)
{
ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
/* Configure the UART flush timer - run at Fcpu/1024 for maximum interval before overflow */
TCCR0B = ((1 << CS02) | (1 << CS00));
/* Initialize ring buffers used to hold serial data between USB and software UART interfaces */
RingBuffer_InitBuffer(&USBtoUART_Buffer, USBtoUART_Buffer_Data, sizeof(USBtoUART_Buffer_Data));
RingBuffer_InitBuffer(&UARTtoUSB_Buffer, UARTtoUSB_Buffer_Data, sizeof(UARTtoUSB_Buffer_Data));
/* Start the software USART */
SoftUART_Init();
}
else
{
ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_OUT_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
if ((AVRISP_DATA_IN_EPADDR & ENDPOINT_EPNUM_MASK) != (AVRISP_DATA_OUT_EPADDR & ENDPOINT_EPNUM_MASK))
ConfigSuccess &= Endpoint_ConfigureEndpoint(AVRISP_DATA_IN_EPADDR, EP_TYPE_BULK, AVRISP_DATA_EPSIZE, 1);
/* Configure the V2 protocol packet handler */
V2Protocol_Init();
}
LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
LEDs_SetAllLEDs(0);
sei();
for (;;)
{
if ((PINF & 0x01) == 0x01)
LEDs_SetAllLEDs(2);
else
LEDs_SetAllLEDs(0);
/* Only try to read in bytes from the CDC interface if the (outbound) transmit buffer is not full */
if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
if (!(ReceivedByte < 0))
RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
}
/* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
if ((TIFR0 & (1 << TOV0)) || (BufferCount > (uint8_t)(sizeof(USARTtoUSB_Buffer_Data) * .75)))
{
/* Clear flush timer expiry flag */
TIFR0 |= (1 << TOV0);
/* Read bytes from the USART receive buffer into the USB IN endpoint */
while (BufferCount--)
{
/* Try to send the next byte of data to the host, abort if there is an error without dequeuing */
if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface,
RingBuffer_Peek(&USARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
{
break;
}
/* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */
RingBuffer_Remove(&USARTtoUSB_Buffer);
}
}
/* Load the next byte from the USART transmit buffer into the USART */
if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer)))
Serial_SendByte(RingBuffer_Remove(&USBtoUSART_Buffer));
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer);
RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
sei();
for (;;)
{
/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
if (!(ReceivedByte < 0))
RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
}
/* Check if the UART receive buffer flush timer has expired or the buffer is nearly full */
RingBuff_Count_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
if ((TIFR0 & (1 << TOV0)) || (BufferCount > BUFFER_NEARLY_FULL))
{
TIFR0 |= (1 << TOV0);
if (USARTtoUSB_Buffer.Count) {
LEDs_TurnOnLEDs(LEDMASK_TX);
PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
}
/* Read bytes from the USART receive buffer into the USB IN endpoint */
while (BufferCount--)
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&USARTtoUSB_Buffer));
/* Turn off TX LED(s) once the TX pulse period has elapsed */
if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_TX);
/* Turn off RX LED(s) once the RX pulse period has elapsed */
if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_RX);
}
/* Load the next byte from the USART transmit buffer into the USART */
if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer))) {
Serial_TxByte(RingBuffer_Remove(&USBtoUSART_Buffer));
LEDs_TurnOnLEDs(LEDMASK_RX);
PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
}
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
void VncServerInit(void)
{
USB_Init();
/* Start the flush timer so that overflows occur rapidly to push received bytes to the USB interface */
TCCR0B = (1 << CS02);
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
}
//------------------------------------------------------------------------------
void appInit(Application *app)
{
RingBuffer_InitBuffer(&app->USARTtoUSB_Buffer, app->USARTtoUSB_Buffer_Data, sizeof(app->USARTtoUSB_Buffer_Data));
RingBuffer_InitBuffer(&app->buffer_, app->buffer_data_, sizeof(app->buffer_data_));
app->state.state = STATE_RESET;
asicInit();
asicStop();
}
/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
/* Hardware Initialization */
LEDs_Init();
USB_Init(0);
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
/** 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();
RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
sei();
for (;;)
{
HID_Device_USBTask(&Surface_HID_Interface);
USB_USBTask();
/* Turn off the Tx LED when the tick count reaches zero */
if (led1_ticks)
{
led1_ticks--;
if (led1_ticks == 0)
{
LEDs_TurnOffLEDs(LEDS_LED1);
}
}
/* Turn off the Rx LED when the tick count reaches zero */
if (led2_ticks)
{
led2_ticks--;
if (led2_ticks == 0)
{
LEDs_TurnOffLEDs(LEDS_LED2);
}
}
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
stdout=&mystdout;
stdin=&mystdin;
SetupHardware();
//LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
//Eval Prototype Sharp Reset Pin
//DDRB &= ~RESET_PIN; //Set Input
//PORTB |= RESET_PIN; //Set High
//DDRB |= RESET_PIN; //Set Output
//Drude Sharp LCD Reset PIN
PORTF |= RESETN_PIN; //Set High
DDRF |= RESETN_PIN; //Set Output
//Digitizer Interrupt
//DDRB &= ~(_BV(7)); //PB7 input
//PORTB &= ~(1<<PB7); //PB7 low
PORTB |= (_BV(7)); //Set high (input pullup)
//IP4787CZ32Y HDMI ESD interface chip (HDMI_ACT PIN) Active-High (Test-Point 12)
PORTF |= (_BV(PF1)); //Set high (input pullup)
//Toshiba Interrupt Pin
PORTE |= (_BV(PE6)); //Set high (input pullup)
//Toshiba Standby Pin
PORTF |= (_BV(PF4)); //Set high (input pullup)
//Toshiba Reset Pin - Active Low
PORTC |= (_BV(PC7)); //Set high (input pullup)
//LCD-CABC
//PORTF |= (_BV(PF7)); //Set high (defaults to input pullup)
//DDRF &= ~(_BV(PF7)); //Set output
//PORTF |= (_BV(PF7)); //Set low
//LED-PWM
PORTD |= (_BV(PD6)); //Set high (defaults to input pullup)
//PORTD &= ~(_BV(PD6)); //Set low
//DDRD &= ~(_BV(PD6)); //Set output
RingBuffer_InitBuffer(&FromHost_Buffer, FromHost_Buffer_Data, sizeof(FromHost_Buffer_Data));
init_screen(0x1F); //magic number!
mxt_list_types();
for (;;)
{
HandleSerial();
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
HID_Device_USBTask(&Digitizer_HID_Interface);
USB_USBTask();
HandleDigitizer();
}
}
/* Pull target /RESET line high */
AVR_RESET_LINE_PORT |= AVR_RESET_LINE_MASK;
AVR_RESET_LINE_DDR |= AVR_RESET_LINE_MASK;
}
// Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void) {
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}
// Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void) {
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
// Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void) {
bool ConfigSuccess = true;
if (CURRENT_MODE == MODE_SERIAL) {
RingBuffer_InitBuffer(&USBtoUSART_Buffer);
RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_Interface);
}
else {
UCSR1B |= (1 << RXCIE1) | (1 << TXCIE1);
ConfigSuccess &= MIDI_Device_ConfigureEndpoints(&MIDI_Interface);
}
LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data, sizeof(USBtoUSART_Buffer_Data));
RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
while(1)
{
if(RTR==1)
{
if (ReceivedByte==0xFF)
{
for (uint8_t i = 0; i < 4; i++)
{
if (ReceivedByte==0)
{
ReceivedByte=1;
}
buff[i] = ReceivedByte;
RTR = 0;
while(RTR!=1){}
}
uint8_t range = ((buff[1]*256+buff[2])/100);
RingBuffer_Insert(&USARTtoUSB_Buffer,buff[1]);
RingBuffer_Insert(&USARTtoUSB_Buffer,buff[2]);
//RingBuffer_Insert(&USARTtoUSB_Buffer,range);
sendUSARTtoUSB();
_delay_ms(500);
}
}
// if (!RingBuffer_IsFull(&USBtoUSART_Buffer))
// {
// int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
// if (!(ReceivedByte < 0))
// {
// sendUSBtoUSART();
// }
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
// }
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&FromHost_Buffer, FromHost_Buffer_Data, sizeof(FromHost_Buffer_Data));
GlobalInterruptEnable();
for (;;)
{
/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
if (!(RingBuffer_IsFull(&FromHost_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
if (!(ReceivedByte < 0))
RingBuffer_Insert(&FromHost_Buffer, ReceivedByte);
}
while (RingBuffer_GetCount(&FromHost_Buffer) > 0)
{
static uint8_t EscapePending = 0;
int16_t HD44780Byte = RingBuffer_Remove(&FromHost_Buffer);
if (HD44780Byte == COMMAND_ESCAPE)
{
if (EscapePending)
{
HD44780_WriteData(HD44780Byte);
EscapePending = 0;
}
else
{
/* Next received character is the command byte */
EscapePending = 1;
}
}
else
{
if (EscapePending)
{
HD44780_WriteCommand(HD44780Byte);
EscapePending = 0;
}
else
{
HD44780_WriteData(HD44780Byte);
}
}
}
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/******************************************************************************
* Nombre de la funcion : void serial_init(void)
* returns : void
* Creada por : Alejandro Weinstein
* Fecha Creacion : 2013-04-08
*
* Descripcion : Inicializa el purto serial virtual USB
******************************************************************************/
void serial_init(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer, USBtoUSART_Buffer_Data,
sizeof(USBtoUSART_Buffer_Data));
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
GlobalInterruptEnable();
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
sei();
for (;;)
{
HID_Device_USBTask(&Joystick_HID_Interface);
USB_USBTask();
}
}
//------------------------------------------------------------------------------
void serialInit(void)
{
RingBuffer_InitBuffer(&buffer_, buffer_data_, sizeof(buffer_data_));
frame_size_ = 0;
}
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&RF12toUSB_Buffer, RF12toUSB_Buffer_Data, sizeof(RF12toUSB_Buffer_Data));
RingBuffer_InitBuffer(&USBtoRF12_Buffer, USBtoRF12_Buffer_Data, sizeof(USBtoRF12_Buffer_Data));
RingBuffer_InitBuffer(&Transmit_Buffer, Transmit_Buffer_Data, sizeof(Transmit_Buffer_Data));
sei();
for (;;)
{
uint16_t RFM12B_status = RFM12B_SPI_Transfer(0);
if (( RFM12B_status & RFM12B_STATUS_RSSI )
&& !RFM12B_Transmit_Active )
{
PORTD &= ~0x40;
}
else
{
PORTD |= 0x40;
}
/* Only try to read in bytes from the CDC interface if the transmit buffer is not full */
if ( !RingBuffer_IsFull( &USBtoRF12_Buffer )
&& !RFM12B_Transmit_Active )
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
/* Read bytes from the USB OUT endpoint into the USART transmit buffer */
if (!(ReceivedByte < 0))
{
if ( ReceivedByte != END_OF_PACKET )
{
RingBuffer_Insert( &USBtoRF12_Buffer, ReceivedByte );
}
else
{
/* TODO : Need to implement LBT */
RFM12B_Start_Transmit();
}
}
}
/* Check to see if there's an RGIT or an FFIT bit set in the status
register indicating that we need to send or receive a byte */
if ( RFM12B_status & RFM12B_STATUS_RGIT )
{
if ( RFM12B_Transmit_Active )
{
RFM12B_Transmit();
}
else
{
RFM12B_Receive();
}
}
/* Check the flush timer. This is used to timeout incoming packets
that don't arrive in time or to flush the data to the USB host.
First, check to see if we are in the middle of receiving a packet */
if ( RxLength )
{
/* A packet is being received. Check the flush timer
and timeout the packet if it takes too long */
if ( TIFR0 & _BV(TOV0))
{
/* Clear flush timer expiry flag */
TIFR0 |= _BV(TOV0);
/* Flush timer overflows every 4ms. 256 bytes at ~50k
should take approximately 42ms so we allow 12 counts
for overflow. This should probably be calculated
based on the bit rate and max message length */
if ( ++RxTimeout > 12 )
{
RingBuffer_Insert( &RF12toUSB_Buffer, END_OF_PACKET );
RFM12B_SPI_Transfer( 0xCA81 );
RFM12B_SPI_Transfer( 0xCA83 );
RxLength = 0;
}
}
}
else
{
/* No packet is being received. Check if the UART receive
buffer flush timer has expired or the buffer is nearly full */
uint16_t BufferCount = RingBuffer_GetCount(&RF12toUSB_Buffer);
if ((TIFR0 & (1 << TOV0)) || (BufferCount > (uint8_t)(sizeof(RF12toUSB_Buffer_Data) * .75)))
{
/* Clear flush timer expiry flag */
TIFR0 |= _BV(TOV0);
/* Read bytes from the USART receive buffer into the USB IN endpoint */
while (BufferCount--)
{
/* Try to send the next byte of data to the host, abort if there is an error without dequeuing */
if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface,
RingBuffer_Peek(&RF12toUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
{
break;
}
/* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */
RingBuffer_Remove(&RF12toUSB_Buffer);
}
}
}
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&Tx_Buffer);
sei();
for (;;)
{
/* Echo bytes from the host to the target via the hardware USART */
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
if (!(ReceivedByte < 0) && (UCSR1A & (1 << UDRE1)))
{
UDR1 = ReceivedByte;
LEDs_TurnOnLEDs(LEDMASK_TX);
PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
}
/* Check if the millisecond timer has elapsed */
if (TIFR0 & (1 << OCF0A))
{
/* Check if the reset pulse period has elapsed, if so tristate the target reset line */
if (PulseMSRemaining.ResetPulse && !(--PulseMSRemaining.ResetPulse))
{
LEDs_TurnOffLEDs(LEDMASK_BUSY);
AVR_RESET_LINE_DDR &= ~AVR_RESET_LINE_MASK;
}
/* Check if the LEDs should be ping-ponging (during enumeration) */
if (PulseMSRemaining.PingPongLEDPulse && !(--PulseMSRemaining.PingPongLEDPulse))
{
LEDs_ToggleLEDs(LEDMASK_TX | LEDMASK_RX);
PulseMSRemaining.PingPongLEDPulse = PING_PONG_LED_PULSE_MS;
}
/* Turn off TX LED(s) once the TX pulse period has elapsed */
if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_TX);
/* Turn off RX LED(s) once the RX pulse period has elapsed */
if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_RX);
/* Check if the receive buffer flush period has expired */
RingBuff_Count_t BufferCount = RingBuffer_GetCount(&Tx_Buffer);
if (!(--FlushPeriodRemaining) || (BufferCount > 200))
{
/* Echo bytes from the target to the host via the virtual serial port */
if (BufferCount)
{
while (BufferCount--)
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&Tx_Buffer));
LEDs_TurnOnLEDs(LEDMASK_RX);
PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
}
FlushPeriodRemaining = RECEIVE_BUFFER_FLUSH_MS;
}
/* Clear the millisecond timer CTC flag (cleared by writing logic one to the register) */
TIFR0 |= (1 << OCF0A);
}
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/*---------------------------------------------------------------------------*/
int transport_init()
{
RingBuffer_InitBuffer(&tcpBuffer, tcpBufferData, sizeof(tcpBufferData));
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer);
RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
setupEeprom();
sei();
for (;;)
{
// Only try to read in bytes from the CDC interface if the transmit buffer is not full
if (!(RingBuffer_IsFull(&USBtoUSART_Buffer)))
{
int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
// Read bytes from the USB OUT endpoint into the USART transmit buffer
if (!(ReceivedByte < 0))
RingBuffer_Insert(&USBtoUSART_Buffer, ReceivedByte);
}
// Check if the UART receive buffer flush timer has expired or the buffer is nearly full
RingBuff_Count_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
if ((TIFR0 & (1 << TOV0)) || (BufferCount > BUFFER_NEARLY_FULL))
{
TIFR0 |= (1 << TOV0);
if (USARTtoUSB_Buffer.Count) {
LEDs_TurnOnLEDs(LEDMASK_TX);
PulseMSRemaining.TxLEDPulse = TX_RX_LED_PULSE_MS;
}
// Read bytes from the USART receive buffer into the USB IN endpoint
while (BufferCount--)
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, RingBuffer_Remove(&USARTtoUSB_Buffer));
// Turn off TX LED(s) once the TX pulse period has elapsed
if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_TX);
// Turn off RX LED(s) once the RX pulse period has elapsed
if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_RX);
if (ResetTimer > 0)
{
// SAM3X RESET/ERASE Sequence
// --------------------------
if (ResetTimer == 95) {
eepromInterruptDisable();
setErasePin(true);
setResetPin(false);
}
if (ResetTimer == 35) {
eepromInterruptDisable();
setErasePin(false);
setResetPin(false);
}
if (ResetTimer == 25) {
eepromInterruptDisable();
setErasePin(false);
setResetPin(true);
}
if (ResetTimer == 1) {
eepromInterruptDisable();
setErasePin(false);
setResetPin(false);
}
ResetTimer--;
} else {
setErasePin(false);
setResetPin(false);
eepromInterruptEnable();
}
}
// Load the next byte from the USART transmit buffer into the USART
if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer))) {
Serial_TxByte(RingBuffer_Remove(&USBtoUSART_Buffer));
LEDs_TurnOnLEDs(LEDMASK_RX);
PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
}
// CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
// USB_USBTask();
serviceEepromRequest();
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
SetupHardware();
RingBuffer_InitBuffer(&USARTtoUSB_Buffer, USARTtoUSB_Buffer_Data, sizeof(USARTtoUSB_Buffer_Data));
sei();
for (;;)
{
/* Echo bytes from the host to the target via the hardware USART */
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;
}
/* Check if the millisecond timer has elapsed */
if (TIFR0 & (1 << OCF0A))
{
/* Clear flush timer expiry flag */
TIFR0 |= (1 << TOV0);
/* Check if the reset pulse period has elapsed, if so tristate the target reset line */
if (PulseMSRemaining.ResetPulse && !(--PulseMSRemaining.ResetPulse))
{
LEDs_TurnOffLEDs(LEDMASK_BUSY);
AVR_RESET_LINE_DDR &= ~AVR_RESET_LINE_MASK;
}
/* Check if the LEDs should be ping-ponging (during enumeration) */
if (PulseMSRemaining.PingPongLEDPulse && !(--PulseMSRemaining.PingPongLEDPulse))
{
LEDs_ToggleLEDs(LEDMASK_TX | LEDMASK_RX);
PulseMSRemaining.PingPongLEDPulse = PING_PONG_LED_PULSE_MS;
}
/* Turn off TX LED(s) once the TX pulse period has elapsed */
if (PulseMSRemaining.TxLEDPulse && !(--PulseMSRemaining.TxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_TX);
/* Turn off RX LED(s) once the RX pulse period has elapsed */
if (PulseMSRemaining.RxLEDPulse && !(--PulseMSRemaining.RxLEDPulse))
LEDs_TurnOffLEDs(LEDMASK_RX);
/* Check if the receive buffer flush period has expired */
uint16_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
if (!(--FlushPeriodRemaining) || (BufferCount > 200))
{
FlushPeriodRemaining = RECEIVE_BUFFER_FLUSH_MS;
/* Start RX LED indicator pulse */
if (BufferCount)
{
LEDs_TurnOnLEDs(LEDMASK_RX);
PulseMSRemaining.RxLEDPulse = TX_RX_LED_PULSE_MS;
}
/* Echo bytes from the target to the host via the virtual serial port */
while (BufferCount--)
{
/* Try to send the next byte of data to the host, abort if there is an error without dequeuing */
if (CDC_Device_SendByte(&VirtualSerial_CDC_Interface,
RingBuffer_Peek(&USARTtoUSB_Buffer)) != ENDPOINT_READYWAIT_NoError)
{
break;
}
/* Dequeue the already sent byte from the buffer now we have confirmed that no transmission error occurred */
RingBuffer_Remove(&USARTtoUSB_Buffer);
}
}
}
CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
USB_USBTask();
}
}
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
int main(void)
{
MIDI_EventPacket_t midiEvent;
struct {
uint8_t command;
uint8_t channel;
uint8_t data2;
uint8_t data3;
} midiMsg;
int ind;
int led1_ticks = 0;
int led2_ticks = 0;
SetupHardware();
RingBuffer_InitBuffer(&USBtoUSART_Buffer);
RingBuffer_InitBuffer(&USARTtoUSB_Buffer);
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
sei();
for (;;) {
RingBuff_Count_t BufferCount = RingBuffer_GetCount(&USARTtoUSB_Buffer);
/* See if we have a message yet */
if (BufferCount >= 4) {
/* Read in the message from the serial buffer */
for (ind=0; ind<4; ind++) {
((uint8_t *)&midiMsg)[ind] = RingBuffer_Remove(&USARTtoUSB_Buffer);
}
/* Build a midi event to send via USB */
midiEvent.CableNumber = 0;
midiEvent.Command = midiMsg.command >> 4;
midiEvent.Data1 = (midiMsg.command & 0xF0) | ((midiMsg.channel-1) & 0x0F);
midiEvent.Data2 = midiMsg.data2;
midiEvent.Data3 = midiMsg.data3;
MIDI_Device_SendEventPacket(&Keyboard_MIDI_Interface, &midiEvent);
MIDI_Device_Flush(&Keyboard_MIDI_Interface);
/* Turn on the TX led and starts its timer */
LEDs_TurnOnLEDs(LEDS_LED1);
led1_ticks = LED_ON_TICKS;
}
/* Turn off the Tx LED when the tick count reaches zero */
if (led1_ticks) {
led1_ticks--;
if (led1_ticks == 0) {
LEDs_TurnOffLEDs(LEDS_LED1);
}
}
if (MIDI_Device_ReceiveEventPacket(&Keyboard_MIDI_Interface, &midiEvent)) {
RingBuff_Count_t count = RingBuffer_GetCount(&USBtoUSART_Buffer);
/* Room to send a message? */
if ((BUFFER_SIZE - count) >= sizeof(midiMsg)) {
midiMsg.command = midiEvent.Command << 4;
midiMsg.channel = (midiEvent.Data1 & 0x0F) + 1;
midiMsg.data2 = midiEvent.Data2;
midiMsg.data3 = midiEvent.Data3;
for (ind=0; ind<sizeof(midiMsg); ind++) {
RingBuffer_Insert(&USBtoUSART_Buffer, ((uint8_t *)&midiMsg)[ind]);
}
/* Turn on the RX led and start its timer */
LEDs_TurnOnLEDs(LEDS_LED2);
led2_ticks = LED_ON_TICKS;
} else {
/* Turn on the RX led and leave it on to indicate the
* buffer is full and the sketch is not reading it
* fast enough.
*/
LEDs_TurnOnLEDs(LEDS_LED2);
}
/* if there's no room in the serial buffer the message gets dropped */
}
/* Turn off the RX LED when the tick count reaches zero */
if (led2_ticks) {
led2_ticks--;
if (led2_ticks == 0) {
LEDs_TurnOffLEDs(LEDS_LED2);
}
}
/* any data to send to main processor? */
if (!(RingBuffer_IsEmpty(&USBtoUSART_Buffer))) {
Serial_TxByte(RingBuffer_Remove(&USBtoUSART_Buffer));
}
MIDI_Device_USBTask(&Keyboard_MIDI_Interface);
USB_USBTask();
}
}