void mySetLineCodingHandler(void)
{
//If the request is not in a valid range
if(cdc_notice.GetLineCoding.dwDTERate.Val > 115200)
{
//NOTE: There are two ways that an unsupported baud rate could be
//handled. The first is just to ignore the request and don't change
//the values. That is what is currently implemented in this function.
//The second possible method is to stall the STATUS stage of the request.
//STALLing the STATUS stage will cause an exception to be thrown in the
//requesting application. Some programs, like HyperTerminal, handle the
//exception properly and give a pop-up box indicating that the request
//settings are not valid. Any application that does not handle the
//exception correctly will likely crash when this requiest fails. For
//the sake of example the code required to STALL the status stage of the
//request is provided below. It has been left out so that this demo
//does not cause applications without the required exception handling
//to crash.
//---------------------------------------
//USBStallEndpoint(0,1);
}
else
{
//Update the baudrate info in the CDC driver
CDCSetBaudRate(cdc_notice.GetLineCoding.dwDTERate.Val);
}
}
void mySetLineCodingHandler(void) {
if (cdc_notice.GetLineCoding.dwDTERate.Val > 115200) {
// invalid range! stall the request's STATUS stage, which will throw an
// exception in the requesting application: USBStallEndpoint(0,1);
} else
CDCSetBaudRate(cdc_notice.GetLineCoding.dwDTERate.Val);
}
void mySetLineCodingHandler(void)
{
//If the request is not in a valid range
if(cdc_notice.GetLineCoding.dwDTERate.Val > 115200)
{
//NOTE: There are two ways that an unsupported baud rate could be
//handled. The first is just to ignore the request and don't change
//the values. That is what is currently implemented in this function.
//The second possible method is to stall the STATUS stage of the request.
//STALLing the STATUS stage will cause an exception to be thrown in the
//requesting application. Some programs, like HyperTerminal, handle the
//exception properly and give a pop-up box indicating that the request
//settings are not valid. Any application that does not handle the
//exception correctly will likely crash when this requiest fails. For
//the sake of example the code required to STALL the status stage of the
//request is provided below. It has been left out so that this demo
//does not cause applications without the required exception handling
//to crash.
//---------------------------------------
//USBStallEndpoint(0,1);
}
else
{
DWORD_VAL dwBaud;
//Update the baudrate info in the CDC driver
CDCSetBaudRate(cdc_notice.GetLineCoding.dwDTERate.Val);
//Update the baudrate of the UART
#if defined(__18CXX)
dwBaud.Val = (DWORD)(GetSystemClock()/4)/line_coding.dwDTERate.Val-1;
SPBRG = dwBaud.v[0];
SPBRGH = dwBaud.v[1];
#elif defined(__C30__)
#if defined(__dsPIC33EP512MU810__) || defined (__PIC24EP512GU810__)
dwBaud.Val = ((GetPeripheralClock()/(unsigned long)(16 * line_coding.dwDTERate.Val)))- 1;
#else
dwBaud.Val = (((GetPeripheralClock()/2)+(BRG_DIV2/2*line_coding.dwDTERate.Val))/BRG_DIV2/line_coding.dwDTERate.Val-1);
#endif
U2BRG = dwBaud.Val;
#elif defined(__C32__)
U2BRG = ((GetPeripheralClock()+(BRG_DIV2/2*line_coding.dwDTERate.Val))/BRG_DIV2/line_coding.dwDTERate.Val-1);
//U2MODE = 0;
U2MODEbits.BRGH = BRGH2;
//U2STA = 0;
#endif
}
}
void mySetLineCodingHandler(void)
{
//If the request is not in a valid range
if(cdc_notice.GetLineCoding.dwDTERate.Val > 115200)
{
USBStallEndpoint(0,1);
}
else
{
DWORD_VAL dwBaud;
CDCSetBaudRate(cdc_notice.GetLineCoding.dwDTERate.Val);
dwBaud.Val = (CLOCK_FREQ/4)/line_coding.dwDTERate.Val-1;
SPBRG = dwBaud.v[0];
SPBRGH = dwBaud.v[1];
}
}
void USB_init(void) {
USBDeviceInit();
USBDeviceAttach();
CDCSetBaudRate(115200);
}
