/* * Copyright (C) 2012 by Ole Reinhardt (ole.reinhardt@embedded-it.de) * * All rights reserved. * * 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. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS 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. * * For additional information see http://www.ethernut.de/ */ /* * \verbatim * $Id: $ * \endverbatim */ #include #include #include #include #include #include #include #include #include #include #include /*! * \addtogroup xgNutArchCm3Lpc176xUsart */ /*@{*/ /*----------------------------------------------------------------------------* Public functions *----------------------------------------------------------------------------*/ static uint32_t Lpc17xxUsartGetSpeed(void); static int Lpc17xxUsartSetSpeed(uint32_t baudrate); static uint8_t Lpc17xxUsartGetDataBits(void); static int Lpc17xxUsartSetDataBits(uint8_t bits); static uint8_t Lpc17xxUsartGetParity(void); static int Lpc17xxUsartSetParity(uint8_t mode); static uint8_t Lpc17xxUsartGetStopBits(void); static int Lpc17xxUsartSetStopBits(uint8_t bits); static uint32_t Lpc17xxUsartGetFlowControl(void); static int Lpc17xxUsartSetFlowControl(uint32_t flags); static uint32_t Lpc17xxUsartGetStatus(void); static int Lpc17xxUsartSetStatus(uint32_t flags); static uint8_t Lpc17xxUsartGetClockMode(void); static int Lpc17xxUsartSetClockMode(uint8_t mode); static void Lpc17xxUsartTxStart(void); static void Lpc17xxUsartRxStart(void); static int Lpc17xxUsartInit(void); static int Lpc17xxUsartDeinit(void); /* * USART1 device control block structure. */ static USARTDCB dcb_usart1 = { 0, /* dcb_modeflags */ 0, /* dcb_statusflags */ 0, /* dcb_rtimeout */ 0, /* dcb_wtimeout */ { 0,0,0,0,0,0,0,0,0}, /* dcb_tx_rbf */ { 0,0,0,0,0,0,0,0,0}, /* dcb_rx_rbf */ 0, /* dbc_last_eol */ Lpc17xxUsartInit, /* dcb_init */ Lpc17xxUsartDeinit, /* dcb_deinit */ Lpc17xxUsartTxStart, /* dcb_tx_start */ Lpc17xxUsartRxStart, /* dcb_rx_start */ Lpc17xxUsartSetFlowControl, /* dcb_set_flow_control */ Lpc17xxUsartGetFlowControl, /* dcb_get_flow_control */ Lpc17xxUsartSetSpeed, /* dcb_set_speed */ Lpc17xxUsartGetSpeed, /* dcb_get_speed */ Lpc17xxUsartSetDataBits, /* dcb_set_data_bits */ Lpc17xxUsartGetDataBits, /* dcb_get_data_bits */ Lpc17xxUsartSetParity, /* dcb_set_parity */ Lpc17xxUsartGetParity, /* dcb_get_parity */ Lpc17xxUsartSetStopBits, /* dcb_set_stop_bits */ Lpc17xxUsartGetStopBits, /* dcb_get_stop_bits */ Lpc17xxUsartSetStatus, /* dcb_set_status */ Lpc17xxUsartGetStatus, /* dcb_get_status */ Lpc17xxUsartSetClockMode, /* dcb_set_clock_mode */ Lpc17xxUsartGetClockMode, /* dcb_get_clock_mode */ }; /*! * \name LPC17xx USART1 Device */ /*@{*/ /*! * \brief USART1 device information structure. * * An application must pass a pointer to this structure to * NutRegisterDevice() before using the serial communication * driver of the LPC17xx's on-chip USART1. * * The device is named usart1. * * \showinitializer */ NUTDEVICE devUsartLpc17xx_1 = { 0, /* Pointer to next device, dev_next. */ {'u', 's', 'a', 'r', 't', '1', 0, 0, 0}, /* Unique device name, dev_name. */ IFTYP_CHAR, /* Type of device, dev_type. */ LPC_UART1_BASE, /* Base address, dev_base. */ UART1_IRQn, /* First interrupt number, dev_irq. */ NULL, /* Interface control block, dev_icb. */ &dcb_usart1, /* Driver control block, dev_dcb. */ UsartInit, /* Driver initialization routine, dev_init. */ UsartIOCtl, /* Driver specific control function, dev_ioctl. */ UsartRead, /* Read from device, dev_read. */ UsartWrite, /* Write to device, dev_write. */ UsartOpen, /* Open a device or file, dev_open. */ UsartClose, /* Close a device or file, dev_close. */ UsartSize, /* Request file size, dev_size. */ UsartSelect, /* Select function, dev_select. */ }; /*@}*/ /*! * \brief USART1 GPIO configuartion and assignment. */ #define TX_GPIO_PORT NUTGPIO_PORT0 #define TX_GPIO_PIN 2 #define TX_GPIO_PIN_CFG GPIO_CFG_OUTPUT | GPIO_CFG_PERIPHERAL1 #define RX_GPIO_PORT NUTGPIO_PORT0 #define RX_GPIO_PIN 3 #define RX_GPIO_PIN_CFG GPIO_CFG_INPUT | GPIO_CFG_PERIPHERAL1 /*! * \brief USART1 base configuration. */ #ifdef USART1_INIT_BAUDRATE #define USART_INIT_BAUTRATE USART1_INIT_BAUDRATE #endif /* USART1 does not support hardware handshake */ #define USART_HWFLOWCTRL USART_HardwareFlowControl_None #undef US_MODE_HWHANDSHAKE #ifdef USART1_XONXOFF_CONTROL #define USART_XONXOFF_CONTROL #else #undef USART_XONXOFF_CONTROL #endif /* TODO: DMA Support */ /* #ifdef USART1_SUPPORT_DMA #define UART_DMA_TXCHANNEL DMA1_C4 #define UART_DMA_RXCHANNEL DMA1_C5 #define UART_DMA_TXIRQ sig_DMA1_CH4 #define UART_DMA_RXIRQ sig_DMA1_CH5 #else #undef UART_DMA_TXCHANNEL #undef UART_DMA_RXCHANNEL #endif */ #define USARTn LPC_UART1 #define USARTnBase LPC_UART1_BASE #define USARTirqn UART1_IRQn #define SigUSART sig_USART1 #define DcbUSART dcb_usart1 /*@}*/ #include "lpc17xx_usart.c"