* These values are set by the host via a class-specific request, and the physical USART should be reconfigured to match the\r
* new settings each time they are changed by the host.\r
*/\r
-CDC_Line_Coding_t LineCoding = { .BaudRateBPS = 9600,\r
- .CharFormat = OneStopBit,\r
- .ParityType = Parity_None,\r
- .DataBits = 8 };\r
+CDC_Line_Coding_t LineEncoding = { .BaudRateBPS = 0,\r
+ .CharFormat = OneStopBit,\r
+ .ParityType = Parity_None,\r
+ .DataBits = 8 };\r
\r
/** Ring (circular) buffer to hold the RX data - data from the host to the attached device on the serial port. */\r
RingBuff_t Rx_Buffer;\r
clock_prescale_set(clock_div_1);\r
\r
/* Hardware Initialization */\r
+ Serial_Init(9600, false);\r
LEDs_Init();\r
- ReconfigureUSART();\r
- USB_Init(); \r
+ USB_Init();\r
}\r
\r
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and\r
* starts the library USB task to begin the enumeration and USB management process.\r
*/\r
-void EVENT_USB_Connect(void)\r
+void EVENT_USB_Device_Connect(void)\r
{\r
/* Indicate USB enumerating */\r
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via\r
* the status LEDs and stops the USB management and CDC management tasks.\r
*/\r
-void EVENT_USB_Disconnect(void)\r
+void EVENT_USB_Device_Disconnect(void)\r
{ \r
/* Reset Tx and Rx buffers, device disconnected */\r
Buffer_Initialize(&Rx_Buffer);\r
/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration\r
* of the USB device after enumeration - the device endpoints are configured and the CDC management task started.\r
*/\r
-void EVENT_USB_ConfigurationChanged(void)\r
+void EVENT_USB_Device_ConfigurationChanged(void)\r
{\r
/* Indicate USB connected and ready */\r
LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
{\r
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
}\r
+\r
+ /* Reset line encoding baud rate so that the host knows to send new values */\r
+ LineEncoding.BaudRateBPS = 0;\r
}\r
\r
-/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific\r
+/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific\r
* control requests that are not handled internally by the USB library (including the CDC control commands,\r
* which are all issued via the control endpoint), so that they can be handled appropriately for the application.\r
*/\r
-void EVENT_USB_UnhandledControlPacket(void)\r
+void EVENT_USB_Device_UnhandledControlRequest(void)\r
{\r
- uint8_t* LineCodingData = (uint8_t*)&LineCoding;\r
-\r
/* Process CDC specific control requests */\r
switch (USB_ControlRequest.bRequest)\r
{\r
Endpoint_ClearSETUP();\r
\r
/* Write the line coding data to the control endpoint */\r
- Endpoint_Write_Control_Stream_LE(LineCodingData, sizeof(LineCoding));\r
+ Endpoint_Write_Control_Stream_LE(&LineEncoding, sizeof(LineEncoding));\r
\r
/* Finalize the stream transfer to send the last packet or clear the host abort */\r
Endpoint_ClearOUT();\r
Endpoint_ClearSETUP();\r
\r
/* Read the line coding data in from the host into the global struct */\r
- Endpoint_Read_Control_Stream_LE(LineCodingData, sizeof(LineCoding));\r
+ Endpoint_Read_Control_Stream_LE(&LineEncoding, sizeof(LineEncoding));\r
\r
/* Finalize the stream transfer to clear the last packet from the host */\r
Endpoint_ClearIN();\r
Endpoint_SelectEndpoint(CDC_TX_EPNUM);\r
\r
/* Check if the Tx buffer contains anything to be sent to the host */\r
- if (Tx_Buffer.Elements)\r
+ if ((Tx_Buffer.Elements) && LineEncoding.BaudRateBPS)\r
{\r
/* Wait until Serial Tx Endpoint Ready for Read/Write */\r
- while (!(Endpoint_IsReadWriteAllowed()))\r
- {\r
- if (USB_DeviceState == DEVICE_STATE_Unattached)\r
- return;\r
- }\r
+ Endpoint_WaitUntilReady();\r
\r
/* Write the bytes from the buffer to the endpoint while space is available */\r
while (Tx_Buffer.Elements && Endpoint_IsReadWriteAllowed())\r
if (IsFull && !(Tx_Buffer.Elements))\r
{\r
/* Wait until Serial Tx Endpoint Ready for Read/Write */\r
- while (!(Endpoint_IsReadWriteAllowed()))\r
- {\r
- if (USB_DeviceState == DEVICE_STATE_Unattached)\r
- return;\r
- }\r
+ Endpoint_WaitUntilReady();\r
\r
/* Send an empty packet to terminate the transfer */\r
Endpoint_ClearIN();\r
*/\r
ISR(USART1_RX_vect, ISR_BLOCK)\r
{\r
+ uint8_t ReceivedByte = UDR1;\r
+\r
/* Only store received characters if the USB interface is connected */\r
- if (USB_DeviceState != DEVICE_STATE_Configured)\r
- Buffer_StoreElement(&Tx_Buffer, UDR1);\r
+ if ((USB_DeviceState == DEVICE_STATE_Configured) && LineEncoding.BaudRateBPS)\r
+ Buffer_StoreElement(&Tx_Buffer, ReceivedByte);\r
}\r
\r
/** Reconfigures the USART to match the current serial port settings issued by the host as closely as possible. */\r
uint8_t ConfigMask = 0;\r
\r
/* Determine parity - non odd/even parity mode defaults to no parity */\r
- if (LineCoding.ParityType == Parity_Odd)\r
+ if (LineEncoding.ParityType == Parity_Odd)\r
ConfigMask = ((1 << UPM11) | (1 << UPM10));\r
- else if (LineCoding.ParityType == Parity_Even)\r
+ else if (LineEncoding.ParityType == Parity_Even)\r
ConfigMask = (1 << UPM11);\r
\r
/* Determine stop bits - 1.5 stop bits is set as 1 stop bit due to hardware limitations */\r
- if (LineCoding.CharFormat == TwoStopBits)\r
+ if (LineEncoding.CharFormat == TwoStopBits)\r
ConfigMask |= (1 << USBS1);\r
\r
/* Determine data size - 5, 6, 7, or 8 bits are supported */\r
- if (LineCoding.DataBits == 6)\r
+ if (LineEncoding.DataBits == 6)\r
ConfigMask |= (1 << UCSZ10);\r
- else if (LineCoding.DataBits == 7)\r
+ else if (LineEncoding.DataBits == 7)\r
ConfigMask |= (1 << UCSZ11);\r
- else if (LineCoding.DataBits == 8)\r
+ else if (LineEncoding.DataBits == 8)\r
ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));\r
\r
/* Enable double speed, gives better error percentages at 8MHz */\r
UCSR1C = ConfigMask;\r
\r
/* Set the USART baud rate register to the desired baud rate value */\r
- UBRR1 = SERIAL_2X_UBBRVAL((uint16_t)LineCoding.BaudRateBPS);\r
+ UBRR1 = SERIAL_2X_UBBRVAL((uint16_t)LineEncoding.BaudRateBPS);\r
}\r
projects / pub / USBasp.git / blobdiff