CCS C Compiler Manual PCB / PCM / PCH

usb_kbhit(endpoint)
usb_get_packet
(endpoint, ptr, max)
Returns TRUE if the specified endpoint has data in it's receive buffer
Reads up to max bytes from the specified endpoint buffer and saves it
to the pointer ptr. Returns the number of bytes saved to ptr.
usb_gets(endpoint, ptr,
max, timeout)
Reads a message from the specified endpoint. The difference
usb_get_packet() and usb_gets() is that usb_gets() will wait until a full
message has received, which a message may contain more than one
packet. Returns the number of bytes received.
Relevant CDC
Functions:
A CDC USB device will emulate an RS-232 device, and will appear on your PC as a COM port.
The follow functions provide you this virtual RS-232/serial interface
Note: When using the CDC library, you can use the same functions above, but do not use the
packet related function such as
usb_kbhit(), usb_get_packet(), etc.
usb_cdc_kbhit()
usb_cdc_getc()
usb_cdc_putc(c)
usb_cdc_putc_fast(c)
usb_cdc_puts(*str)
usb_cdc_putready()
The same as kbhit(), returns TRUE if there is 1 or more character in the
receive buffer.
The same as getc(), reads and returns a character from the receive
buffer. If there is no data in the receive buffer it will wait indefinitely until
there a character has been received.
The same as putc(), sends a character. It actually puts a character into
the transmit buffer, and if the transmit buffer is full will wait indefinitely
until there is space for the character.
The same as usb_cdc_putc(), but will not wait indefinitely until there is
space for the character in the transmit buffer. In that situation the
character is lost.
Sends a character string (null terminated) to the USB CDC port. Will
return FALSE if the buffer is busy, TRUE if buffer is string was put into
buffer for sending. Entire string must fit into endpoint, if string is longer
than endpoint buffer then excess characters will be ignored.
Returns TRUE if there is space in the transmit buffer for another
character.
Relevant
Preporcessor:
None
76