| /**************************************************************************** |
| * arch/arm/src/lpc214x/lpc214x_uart.h |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| * |
| ****************************************************************************/ |
| |
| #ifndef __ARCH_ARM_SRC_LPC214X_LPC214X_UART_H |
| #define __ARCH_ARM_SRC_LPC214X_LPC214X_UART_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <arch/board/board.h> /* For clock settings */ |
| |
| /**************************************************************************** |
| * Pre-processor Definitions |
| ****************************************************************************/ |
| |
| /* PINSEL0 bit definitions for UART0/1 */ |
| |
| #define LPC214X_UART0_PINSEL 0x00000005 /* PINSEL0 value for UART0 */ |
| #define LPC214X_UART0_PINMASK 0x0000000f /* PINSEL0 mask for UART0 */ |
| |
| #define LPC214X_UART1_PINSEL 0x00050000 /* PINSEL0 value for UART1 */ |
| #define LPC214X_UART1_PINMASK 0x000f0000 /* PINSEL0 mask for UART1 */ |
| |
| /* Derive baud divisor setting from clock settings (see board.h) */ |
| |
| #define UART_BAUD(baud) ((LPC214X_FOSC * LPC214X_PLL_M) / (baud * 16)) |
| |
| /* Interrupt Enable Register (IER) bit definitions */ |
| |
| #define LPC214X_IER_ERBFI (1 << 0) /* Enable receive data available int */ |
| #define LPC214X_IER_ETBEI (1 << 1) /* Enable THR empty Interrupt */ |
| #define LPC214X_IER_ELSI (1 << 2) /* Enable receive line status int */ |
| #define LPC214X_IER_EDSSI (1 << 3) /* Enable MODEM atatus interrupt (2146/6/8 UART1 Only) */ |
| #define LPC214X_IER_ALLIE 0x0f /* All interrupts */ |
| |
| /* Interrupt ID Register(IIR) bit definitions */ |
| |
| #define LPC214X_IIR_NO_INT (1 << 0) /* No interrupts pending */ |
| #define LPC214X_IIR_MS_INT (0 << 1) /* MODEM Status (UART1 only) */ |
| #define LPC214X_IIR_THRE_INT (1 << 1) /* Transmit Holding Register Empty */ |
| #define LPC214X_IIR_RDA_INT (2 << 1) /* Receive Data Available */ |
| #define LPC214X_IIR_RLS_INT (3 << 1) /* Receive Line Status */ |
| #define LPC214X_IIR_CTI_INT (6 << 1) /* Character Timeout Indicator */ |
| #define LPC214X_IIR_MASK 0x0e |
| |
| /* FIFO Control Register (FCR) bit definitions */ |
| |
| #define LPC214X_FCR_FIFO_ENABLE (1 << 0) /* FIFO enable */ |
| #define LPC214X_FCR_RX_FIFO_RESET (1 << 1) /* Reset receive FIFO */ |
| #define LPC214X_FCR_TX_FIFO_RESET (1 << 2) /* Reset transmit FIFO */ |
| #define LPC214X_FCR_FIFO_TRIG1 (0 << 6) /* Trigger @1 character in FIFO */ |
| #define LPC214X_FCR_FIFO_TRIG4 (1 << 6) /* Trigger @4 characters in FIFO */ |
| #define LPC214X_FCR_FIFO_TRIG8 (2 << 6) /* Trigger @8 characters in FIFO */ |
| #define LPC214X_FCR_FIFO_TRIG14 (3 << 6) /* Trigger @14 characters in FIFO */ |
| |
| /* Line Control Register (LCR) bit definitions */ |
| |
| #define LPC214X_LCR_CHAR_5 (0 << 0) /* 5-bit character length */ |
| #define LPC214X_LCR_CHAR_6 (1 << 0) /* 6-bit character length */ |
| #define LPC214X_LCR_CHAR_7 (2 << 0) /* 7-bit character length */ |
| #define LPC214X_LCR_CHAR_8 (3 << 0) /* 8-bit character length */ |
| #define LPC214X_LCR_STOP_1 (0 << 2) /* 1 stop bit */ |
| #define LPC214X_LCR_STOP_2 (1 << 2) /* 2 stop bits */ |
| #define LPC214X_LCR_PAR_NONE (0 << 3) /* No parity */ |
| #define LPC214X_LCR_PAR_ODD (1 << 3) /* Odd parity */ |
| #define LPC214X_LCR_PAR_EVEN (3 << 3) /* Even parity */ |
| #define LPC214X_LCR_PAR_MARK (5 << 3) /* Mark "1" parity */ |
| #define LPC214X_LCR_PAR_SPACE (7 << 3) /* Space "0" parity */ |
| #define LPC214X_LCR_BREAK_ENABLE (1 << 6) /* Output BREAK */ |
| #define LPC214X_LCR_DLAB_ENABLE (1 << 7) /* Enable divisor latch access */ |
| |
| /* Modem Control Register (MCR) bit definitions */ |
| |
| #define LPC214X_MCR_DTR (1 << 0) /* Data terminal ready */ |
| #define LPC214X_MCR_RTS (1 << 1) /* Request to send */ |
| #define LPC214X_MCR_LB (1 << 4) /* Loopback */ |
| |
| /* Line Status Register (LSR) bit definitions */ |
| |
| #define LPC214X_LSR_RDR (1 << 0) /* Receive data ready */ |
| #define LPC214X_LSR_OE (1 << 1) /* Overrun error */ |
| #define LPC214X_LSR_PE (1 << 2) /* Parity error */ |
| #define LPC214X_LSR_FE (1 << 3) /* Framing error */ |
| #define LPC214X_LSR_BI (1 << 4) /* Break interrupt */ |
| #define LPC214X_LSR_THRE (1 << 5) /* THR empty */ |
| #define LPC214X_LSR_TEMT (1 << 6) /* Transmitter empty */ |
| #define LPC214X_LSR_RXFE (1 << 7) /* Error in receive FIFO */ |
| #define LPC214X_LSR_ERR_MASK 0x1e |
| |
| /* Modem Status Register (MSR) bit definitions */ |
| |
| #define LPC214X_MSR_DCTS (1 << 0) /* Delta clear to send */ |
| #define LPC214X_MSR_DDSR (1 << 1) /* Delta data set ready */ |
| #define LPC214X_MSR_TERI (1 << 2) /* Trailing edge ring indicator */ |
| #define LPC214X_MSR_DDCD (1 << 3) /* Delta data carrier detect */ |
| #define LPC214X_MSR_CTS (1 << 4) /* Clear to send */ |
| #define LPC214X_MSR_DSR (1 << 5) /* Data set ready */ |
| #define LPC214X_MSR_RI (1 << 6) /* Ring indicator */ |
| #define LPC214X_MSR_DCD (1 << 7) /* Data carrier detect */ |
| |
| /**************************************************************************** |
| * Inline Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Public Function Prototypes |
| ****************************************************************************/ |
| |
| #endif /* __ARCH_ARM_SRC_LPC214X_LPC214X_UART_H */ |
