105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
/****************************************************************************
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* arch/arm/src/s32k1xx/s32k1xx_lowputc.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_S32K1XX_S32K1XX_LOWPUTC_H
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#define __ARCH_ARM_SRC_S32K1XX_S32K1XX_LOWPUTC_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 <nuttx/compiler.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "arm_internal.h"
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#include "s32k1xx_config.h"
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifdef HAVE_LPUART_DEVICE
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/* This structure describes the configuration of an UART */
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struct uart_config_s
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{
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uint32_t baud; /* Configured baud */
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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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bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */
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bool userts; /* True: Assert RTS when there are data to be sent */
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bool invrts; /* True: Invert sense of RTS pin (true=active high) */
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bool usects; /* True: Condition transmission on CTS asserted */
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bool users485; /* True: Assert RTS while transmission progresses */
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};
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: s32k1xx_lowsetup
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*
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* Description:
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* Called at the very beginning of _start. Performs low level
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* initialization including setup of the console UART. This UART done
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* early so that the serial console is available for debugging very early
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* in the boot sequence.
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*
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****************************************************************************/
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void s32k1xx_lowsetup(void);
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/****************************************************************************
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* Name: s32k1xx_lpuart_configure
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*
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* Description:
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* Configure a UART for non-interrupt driven operation
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*
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****************************************************************************/
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#ifdef HAVE_LPUART_DEVICE
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int s32k1xx_lpuart_configure(uint32_t base,
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const struct uart_config_s *config);
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#endif
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/****************************************************************************
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* Name: s32k1xx_lowputc
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*
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* Description:
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* Output a byte with as few system dependencies as possible. This will
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* even work BEFORE the console is initialized if we are booting from U-
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* Boot (and the same UART is used for the console, of course.)
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*
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****************************************************************************/
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#if defined(HAVE_LPUART_DEVICE) && defined(CONFIG_DEBUG_FEATURES)
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void s32k1xx_lowputc(int ch);
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#else
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# define s32k1xx_lowputc(ch)
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#endif
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#endif /* __ARCH_ARM_SRC_S32K1XX_S32K1XX_LOWPUTC_H */
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