nes-proj/arch/cpu/cc26xx-cc13xx/dev/cc26xx-uart.h

100 lines
3.5 KiB
C

/*
* Copyright (c) 2014, 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 cc26xx
* @{
*
* \defgroup cc26xx-uart CC13xx/CC26xx UARTs
*
* Driver for the CC13xx/CC26xx UART controller
* @{
*
* \file
* Header file for the CC13xx/CC26xx UART driver
*/
#ifndef CC26XX_UART_H_
#define CC26XX_UART_H_
#include <stdint.h>
/*---------------------------------------------------------------------------*/
/** \name UART functions
* @{
*/
/**
* \brief Initialises the UART controller, configures I/O control
* and interrupts
*/
void cc26xx_uart_init();
/**
* \brief Sends a single character down the UART
* \param b The character to transmit
*/
void cc26xx_uart_write_byte(uint8_t b);
/**
* \brief Assigns a callback to be called when the UART receives a byte
* \param input A pointer to the function
*
* If \e input is NULL, the UART driver will assume that RX functionality is
* not required and it will be disabled. It will also disable the module's
* clocks under sleep and deep sleep and allow the SERIAL PD to be powered off.
*
* If \e input is not NULL, the UART driver will assume that RX is in fact
* required and it will be enabled. The module's clocks will be enabled under
* sleep and deep sleep and the driver will not allow the SERIAL PD to turn
* off during deep sleep, so that the UART can still receive bytes.
*
* \note This has a significant impact on overall energy consumption, so you
* should only enabled UART RX input when it's actually required.
*/
void cc26xx_uart_set_input(int (*input)(unsigned char c));
/**
* \brief Returns the UART busy status
* \return UART_IDLE or UART_BUSY
*
* ti_lib_uart_busy() will access UART registers. It is our responsibility
* to first make sure the UART is accessible before calling it. Hence this
* wrapper.
*
* Return values are defined in CC26xxware's uart.h
*/
uint8_t cc26xx_uart_busy(void);
/** @} */
/*---------------------------------------------------------------------------*/
#endif /* CC26XX_UART_H_ */
/**
* @}
* @}
*/