115 lines
4.7 KiB
C
115 lines
4.7 KiB
C
/****************************************************************************
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* include/nuttx/serial/uart_cmsdk.h
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*
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* SPDX-License-Identifier: Apache-2.0
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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 __INCLUDE_NUTTX_SERIAL_UART_CMSDK_H
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#define __INCLUDE_NUTTX_SERIAL_UART_CMSDK_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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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Register offsets */
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#define UART_RBR_OFFSET 0 /* Receiver Buffer Register */
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#define UART_THR_OFFSET 0 /* Transmit Holding Register */
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#define UART_STATE_OFFSET 1 /* Interrupt State Register */
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#define UART_CTRL_OFFSET 2 /* Interrupt Control Register */
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#define UART_INTSTS_OFFSET 3 /* Interrupt Status Clear Register */
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#define UART_BAUDDIV_OFFSET 4 /* Baud rate divider Register */
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/* Register bit definitions */
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#define UART_STATE_TX_BUF_FULL (1 << 0)
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#define UART_STATE_RX_BUF_FULL (1 << 1)
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#define UART_STATE_TX_BUF_OVERRUN (1 << 2)
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#define UART_STATE_RX_BUF_OVERRUN (1 << 3)
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#define UART_CTRL_TX_ENABLE (1 << 0)
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#define UART_CTRL_RX_ENABLE (1 << 1)
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#define UART_CTRL_TX_INT_ENABLE (1 << 2)
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#define UART_CTRL_RX_INT_ENABLE (1 << 3)
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#define UART_CTRL_TX_OVERRUN_INT_ENABLE (1 << 4)
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#define UART_CTRL_RX_OVERRUN_INT_ENABLE (1 << 5)
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#define UART_CTRL_TSTMODE_ENABLE (1 << 6)
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#define UART_CTRL_ALLIE (0x3C)
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#define UART_INTSTATUS_TX (1 << 0)
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#define UART_INTSTATUS_RX (1 << 1)
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#define UART_INTSTATUS_TX_OVERRUN (1 << 2)
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#define UART_INTSTATUS_RX_OVERRUN (1 << 3)
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#define UART_BAUDDIV_MIN (16)
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#define UART_BAUDDIV_MAX (0xfffff)
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#if defined(CONFIG_CMSDK_UART0_SERIAL_CONSOLE) && defined(CONFIG_CMSDK_UART0)
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# undef CONFIG_CMSDK_UART1_SERIAL_CONSOLE
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# undef CONFIG_CMSDK_UART2_SERIAL_CONSOLE
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# define HAVE_CMSDK_CONSOLE 1
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#elif defined(CONFIG_CMSDK_UART1_SERIAL_CONSOLE) && defined(CONFIG_CMSDK_UART1)
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# undef CONFIG_CMSDK_UART0_SERIAL_CONSOLE
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# undef CONFIG_CMSDK_UART2_SERIAL_CONSOLE
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# define HAVE_CMSDK_CONSOLE 1
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#elif defined(CONFIG_CMSDK_UART2_SERIAL_CONSOLE) && defined(CONFIG_CMSDK_UART2)
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# undef CONFIG_CMSDK_UART0_SERIAL_CONSOLE
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# undef CONFIG_CMSDK_UART1_SERIAL_CONSOLE
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# define HAVE_CMSDK_CONSOLE 1
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#else
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# undef CONFIG_CMSDK_UART0_SERIAL_CONSOLE
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# undef CONFIG_CMSDK_UART1_SERIAL_CONSOLE
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# undef CONFIG_CMSDK_UART2_SERIAL_CONSOLE
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# undef HAVE_CMSDK_CONSOLE
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#endif
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/****************************************************************************
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* Public functions prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: cmsdk_earlyserialinit
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*
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* Description:
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* Performs the low level UART initialization early in debug so that the
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* serial console will be available during boot up. This must be called
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* before uart_serialinit.
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*
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****************************************************************************/
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void cmsdk_earlyserialinit(void);
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/****************************************************************************
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* Name: cmsdk_serialinit
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*
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* Description:
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* Register serial console and serial ports. This assumes that
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* up_earlyserialinit was called previously.
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*
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****************************************************************************/
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void cmsdk_serialinit(void);
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#endif /* __INCLUDE_NUTTX_SERIAL_UART_CMSDK_H */
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