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Added new stream creation function to the CDC Class drivers, to easily make standard streams from CDC Class driver instances.

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This commit is contained in:
Dean Camera 2009-11-10 06:22:03 +00:00
parent d6edfe35c8
commit c1782ac024
9 changed files with 88 additions and 47 deletions
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34
Demos/Device/ClassDriver/CDC/CDC.c
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@ -60,27 +60,10 @@ USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
},
};
#if 0
/* NOTE: Here you can set up a standard stream using the created virtual serial port, so that the standard stream functions in
* <stdio.h> can be used on the virtual serial port (e.g. fprintf(&USBSerial, "Test"); to print a string).
/** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
* used like any regular character stream in the C APIs
*/
static int CDC_putchar(char c, FILE *stream)
{
CDC_Device_SendByte(&VirtualSerial_CDC_Interface, c);
return 0;
}
static int CDC_getchar(FILE *stream)
{
if (!(CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface)))
return -1;
return CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
}
static FILE USBSerial = FDEV_SETUP_STREAM(CDC_putchar, CDC_getchar, _FDEV_SETUP_RW);
#endif
static FILE USBSerialStream;
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
@ -89,6 +72,9 @@ int main(void)
{
SetupHardware();
/* Create a regular character stream for the interface so that it can be used with the stdio.h functions */
CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
for (;;)
@ -143,8 +129,12 @@ void CheckJoystickMovement(void)
if ((ReportString != NULL) && (ActionSent == false))
{
ActionSent = true;
CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString, strlen(ReportString));
// Write the string to the virtual COM port via the created character stream
fputs(ReportString, &USBSerialStream);
// Alternatively, without the stream:
// CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString, strlen(ReportString));
}
}