/**
*
* \file
*
* \brief Common Standard I/O Serial Management.
*
* This file defines a useful set of functions for the Stdio Serial interface on
* SAM0 devices.
*
* Copyright (c) 2009-2018 Microchip Technology Inc. and its subsidiaries.
*
* \asf_license_start
*
* \page License
*
* Subject to your compliance with these terms, you may use Microchip
* software and any derivatives exclusively with Microchip products.
* It is your responsibility to comply with third party license terms applicable
* to your use of third party software (including open source software) that
* may accompany Microchip software.
*
* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
*
* \asf_license_stop
*
******************************************************************************/
/*
* Support and FAQ: visit Microchip Support
*/
#ifndef STDIO_SERIAL_H_INCLUDED
#define STDIO_SERIAL_H_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup group_common_utils_stdio_stdio_serial Standard serial I/O (stdio)
* \ingroup group_common_utils_stdio
*
* Common standard serial I/O management driver that
* implements a stdio serial interface on AVR and SAM devices.
*
* @{
*/
#include
#include
#include
/** Pointer to the base of the USART module instance to use for stdio. */
extern volatile void *volatile stdio_base;
/** Pointer to the external low level write function. */
extern int (*ptr_put)(void volatile*, char);
/** Pointer to the external low level read function. */
extern void (*ptr_get)(void volatile*, char*);
#if SAM0
/** \brief Initializes the stdio in Serial Mode.
*
* \param module Software USART instance to associate with the hardware.
* \param hw Base address of the USART hardware instance.
* \param config USART configuration parameters for the STDIO stream.
*
*/
static inline void stdio_serial_init(
struct usart_module *const module,
usart_inst_t const hw,
const struct usart_config *const config)
{
stdio_base = (void *)module;
ptr_put = (int (*)(void volatile*,char))&usart_serial_putchar;
ptr_get = (void (*)(void volatile*,char*))&usart_serial_getchar;
usart_serial_init(module, hw, config);
# if defined(__GNUC__)
// Specify that stdout and stdin should not be buffered.
setbuf(stdout, NULL);
setbuf(stdin, NULL);
// Note: Already the case in IAR's Normal DLIB default configuration
// and AVR GCC library:
// - printf() emits one character at a time.
// - getchar() requests only 1 byte to exit.
# endif
}
#endif
#if SAMB
/** \brief Initializes the stdio in Serial Mode.
*
* \param module Software UART instance to associate with the hardware.
* \param hw Base address of the UART hardware instance.
* \param config UART configuration parameters for the STDIO stream.
*
*/
static inline void stdio_serial_init(
struct uart_module *const module,
Uart * const hw,
const struct uart_config *const config)
{
stdio_base = (void *)module;
ptr_put = (int (*)(void volatile*,char))&usart_serial_putchar;
ptr_get = (void (*)(void volatile*,char*))&usart_serial_getchar;
usart_serial_init(module, hw, config);
# if defined(__GNUC__)
// Specify that stdout and stdin should not be buffered.
setbuf(stdout, NULL);
setbuf(stdin, NULL);
// Note: Already the case in IAR's Normal DLIB default configuration
// and AVR GCC library:
// - printf() emits one character at a time.
// - getchar() requests only 1 byte to exit.
# endif
}
#endif
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif // _STDIO_SERIAL_H_