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Diff: TARGET_SAMD21G18A/TOOLCHAIN_ARM_MICRO/sercom.h
- Revision:
- 171:3a7713b1edbc
- Parent:
- 111:4336505e4b1c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_SAMD21G18A/TOOLCHAIN_ARM_MICRO/sercom.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,136 @@ +/** + * \file + * + * \brief SAM Serial Peripheral Interface Driver + * + * Copyright (C) 2012-2015 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * 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. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> + */ + +#ifndef SERCOM_H_INCLUDED +#define SERCOM_H_INCLUDED + +#include <compiler.h> +#include <system.h> +#include <clock.h> +#include <system_interrupt.h> +#include "sercom_pinout.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#if (SAMD10) || (SAMD11) + +#if (SERCOM0_GCLK_ID_SLOW == SERCOM1_GCLK_ID_SLOW && \ + SERCOM0_GCLK_ID_SLOW == SERCOM2_GCLK_ID_SLOW) +# define SERCOM_GCLK_ID SERCOM0_GCLK_ID_SLOW +#else +# error "SERCOM modules must share the same slow GCLK channel ID." +#endif + +#else + +#if (SERCOM0_GCLK_ID_SLOW == SERCOM1_GCLK_ID_SLOW && \ + SERCOM0_GCLK_ID_SLOW == SERCOM2_GCLK_ID_SLOW && \ + SERCOM0_GCLK_ID_SLOW == SERCOM3_GCLK_ID_SLOW) +# define SERCOM_GCLK_ID SERCOM0_GCLK_ID_SLOW +#else +# error "SERCOM modules must share the same slow GCLK channel ID." +#endif + +#endif + +#if (0x1ff >= REV_SERCOM) +# define FEATURE_SERCOM_SYNCBUSY_SCHEME_VERSION_1 +#elif (0x400 >= REV_SERCOM) +# define FEATURE_SERCOM_SYNCBUSY_SCHEME_VERSION_2 +#else +# error "Unknown SYNCBUSY scheme for this SERCOM revision" +#endif + +/** + * \brief sercom asynchronous operation mode + * + * Select sercom asynchronous operation mode + */ +enum sercom_asynchronous_operation_mode { + SERCOM_ASYNC_OPERATION_MODE_ARITHMETIC = 0, + SERCOM_ASYNC_OPERATION_MODE_FRACTIONAL, +}; + +/** + * \brief sercom asynchronous samples per bit + * + * Select number of samples per bit + */ +enum sercom_asynchronous_sample_num { + SERCOM_ASYNC_SAMPLE_NUM_3 = 3, + SERCOM_ASYNC_SAMPLE_NUM_8 = 8, + SERCOM_ASYNC_SAMPLE_NUM_16 = 16, +}; + +enum status_code sercom_set_gclk_generator( + const enum gclk_generator generator_source, + const bool force_change); + +enum status_code _sercom_get_sync_baud_val( + const uint32_t baudrate, + const uint32_t external_clock, + uint16_t *const baudval); + +enum status_code _sercom_get_async_baud_val( + const uint32_t baudrate, + const uint32_t peripheral_clock, + uint16_t *const baudval, + enum sercom_asynchronous_operation_mode mode, + enum sercom_asynchronous_sample_num sample_num); + +uint32_t _sercom_get_default_pad( + Sercom *const sercom_module, + const uint8_t pad); + +uint8_t _sercom_get_sercom_inst_index( + Sercom *const sercom_instance); +#ifdef __cplusplus +} +#endif + +#endif //__SERCOM_H_INCLUDED