184 lines
6.3 KiB
C
184 lines
6.3 KiB
C
/************************************************************************************
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* arch/arm/src/samd5e5/sam_usart.h
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_SAMD5E5_SAM_USART_H
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#define __ARCH_ARM_SRC_SAMD5E5_SAM_USART_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <arch/chip/chip.h>
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#include "up_arch.h"
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#include "chip/sam_usart.h"
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#include "sam_config.h"
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#include "sam_port.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Pick the console USART configuration */
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#if defined(CONFIG_USART0_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart0config)
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#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart1config)
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#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart2config)
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#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart3config)
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#elif defined(CONFIG_USART4_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart4config)
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#elif defined(CONFIG_USART5_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart5config)
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#elif defined(CONFIG_USART6_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart6config)
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#elif defined(CONFIG_USART7_SERIAL_CONSOLE)
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# define g_consoleconfig (g_usart7config)
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#else
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# undef g_consoleconfig
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#endif
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/* This structure describes the static configuration of a USART */
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struct sam_usart_config_s
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{
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uint8_t sercom; /* Identifies the SERCOM peripheral */
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uint8_t parity; /* 0=none, 1=odd, 2=even */
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uint8_t bits; /* Number of bits (5-9) */
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uint8_t txirq; /* Tx SERCOM IRQ number */
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uint8_t rxirq; /* Rx SERCOM IRQ number */
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uint8_t coregen; /* Core GCLK generator */
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uint8_t slowgen; /* Slow GCLK generator */
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bool stopbits2; /* True: Configure with 2 stop bits instead of 1 */
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uint32_t baud; /* Configured baud */
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port_pinset_t pad0; /* Pin configuration for PAD0 */
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port_pinset_t pad1; /* Pin configuration for PAD1 */
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port_pinset_t pad2; /* Pin configuration for PAD2 */
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port_pinset_t pad3; /* Pin configuration for PAD3 */
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uint32_t muxconfig; /* Pad multiplexing configuration */
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uint32_t frequency; /* Source clock frequency */
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uintptr_t base; /* SERCOM base address */
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};
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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/************************************************************************************
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* Name: sam_wait_synchronization
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*
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* Description:
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* Return true is the SERCOM USART reports that it is synchronizing.
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*
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***********************************************************************************/
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#ifdef SAMD5E5_HAVE_USART
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static inline bool usart_syncbusy(const struct sam_usart_config_s * const config)
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{
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return false;
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}
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#endif
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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#ifdef SAMD5E5_HAVE_USART0
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EXTERN const struct sam_usart_config_s g_usart0config;
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#endif
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#ifdef SAMD5E5_HAVE_USART1
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EXTERN const struct sam_usart_config_s g_usart1config;
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#endif
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#ifdef SAMD5E5_HAVE_USART2
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EXTERN const struct sam_usart_config_s g_usart2config;
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#endif
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#ifdef SAMD5E5_HAVE_USART3
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EXTERN const struct sam_usart_config_s g_usart3config;
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#endif
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#ifdef SAMD5E5_HAVE_USART4
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EXTERN const struct sam_usart_config_s g_usart4config;
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#endif
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#ifdef SAMD5E5_HAVE_USART5
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EXTERN const struct sam_usart_config_s g_usart5config;
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#endif
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#ifdef SAMD5E5_HAVE_USART6
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EXTERN const struct sam_usart_config_s g_usart6config;
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#endif
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#ifdef SAMD5E5_HAVE_USART7
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EXTERN const struct sam_usart_config_s g_usart7config;
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#endif
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EXTERN const struct sam_usart_config_s *g_usartconfig[SAMD5E5_NSERCOM];
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_SAMD5E5_SAM_USART_H */
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