nes-proj/arch/cpu/cc2538/dbg.h

90 lines
3.1 KiB
C

/*
* Copyright (c) 2012, Texas Instruments Incorporated - http://www.ti.com/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \addtogroup cc2538
* @{
*
* \defgroup cc2538-char-io cc2538 Character I/O
*
* CPU-specific functions for debugging and SLIP I/O
*
* On the cc2538, character I/O can be directed over USB or UART. This is
* controlled by a series of configuration directives:
* - SLIP_ARCH_CONF_USB: Controls the operation of slip-arch.
* - DBG_CONF_USB: Controls all debugging output
*
* Defaults for those defines are set in contiki-conf.h
* @{
*
* \file
* Header file for the cc2538 Debug I/O module
*/
#ifndef DBG_H_
#define DBG_H_
#include "contiki.h"
#include "usb/usb-serial.h"
/**
* \brief Print a stream of bytes
* \param seq A pointer to the stream
* \param len The number of bytes to print
* \return The number of printed bytes
*
* This function is an arch-specific implementation required by the dbg-io
* API in cpu/arm/common/dbg-io. It prints a stream of bytes over the
* peripheral used by the platform.
*/
unsigned int dbg_send_bytes(const unsigned char *seq, unsigned int len);
/**
* \brief Flushes character output
*
* When debugging is sent over USB, this functions causes the USB
* driver to immediately TX the content of output buffers. When
* debugging is over UART, this function does nothing.
*
* There is nothing stopping you from using this macro in your code but
* normally, you won't have to.
*/
#if DBG_CONF_USB
#define dbg_flush() usb_serial_flush()
#else
#define dbg_flush()
#endif
#endif /* DBG_H_ */
/**
* @}
* @}
*/