From d4c616e6eeb0587ca450c75b1086efa77ac690e5 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sun, 29 Nov 2009 08:50:13 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1351 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/platforms/LPC214x/serial_lld.h | 174 ++++++++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 os/hal/platforms/LPC214x/serial_lld.h (limited to 'os/hal/platforms/LPC214x/serial_lld.h') diff --git a/os/hal/platforms/LPC214x/serial_lld.h b/os/hal/platforms/LPC214x/serial_lld.h new file mode 100644 index 000000000..b6ac8e379 --- /dev/null +++ b/os/hal/platforms/LPC214x/serial_lld.h @@ -0,0 +1,174 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/** + * @file LPC214x/serial_lld.h + * @brief LPC214x low level serial driver header + * @addtogroup LPC214x_SERIAL + * @{ + */ + +#ifndef _SERIAL_LLD_H_ +#define _SERIAL_LLD_H_ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ + +/** + * @brief Serial buffers size. + * @details Configuration parameter, you can change the depth of the queue + * buffers depending on the requirements of your application. + * @note The default is 128 bytes for both the transmission and receive buffers. + */ +#if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__) +#define SERIAL_BUFFERS_SIZE 128 +#endif + +/** + * @brief FIFO preload parameter. + * @details Configuration parameter, this values defines how many bytes are + * preloaded in the HW transmit FIFO for each interrupt, the maximum value is + * 16 the minimum is 2, the value 0 disables the feature. + * @note An high value reduces the number of interrupts generated but can + * also increase the worst case interrupt response time because the + * preload loops. + * @note The value zero disables the feature and reverts to a simpler code + * that will generate an interrupt for each output byte but is much + * smaller and simpler. + */ +#if !defined(UART_FIFO_PRELOAD) || defined(__DOXYGEN__) +#define UART_FIFO_PRELOAD 16 +#endif + +/** + * @brief UART0 driver enable switch. + * @details If set to @p TRUE the support for USART1 is included. + * @note The default is @p TRUE . + */ +#if !defined(USE_LPC214x_UART0) || defined(__DOXYGEN__) +#define USE_LPC214x_UART0 TRUE +#endif + +/** + * @brief UART1 driver enable switch. + * @details If set to @p TRUE the support for USART2 is included. + * @note The default is @p TRUE. + */ +#if !defined(USE_LPC214x_UART1) || defined(__DOXYGEN__) +#define USE_LPC214x_UART1 TRUE +#endif + +/** + * @brief UART1 interrupt priority level setting. + */ +#if !defined(LPC214x_UART1_PRIORITY) || defined(__DOXYGEN__) +#define LPC214x_UART1_PRIORITY 1 +#endif + +/** + * @brief UART2 interrupt priority level setting. + */ +#if !defined(LPC214x_UART2_PRIORITY) || defined(__DOXYGEN__) +#define LPC214x_UART2_PRIORITY 2 +#endif + +/*===========================================================================*/ +/* Unsupported event flags and custom events. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ + +/** + * Serial Driver condition flags type. + */ +typedef uint32_t sdflags_t; + +/** + * @brief @p SerialDriver specific data. + */ +struct _serial_driver_data { + /** + * Input queue, incoming data can be read from this input queue by + * using the queues APIs. + */ + InputQueue iqueue; + /** + * Output queue, outgoing data can be written to this output queue by + * using the queues APIs. + */ + OutputQueue oqueue; + /** + * Status Change @p EventSource. This event is generated when one or more + * condition flags change. + */ + EventSource sevent; + /** + * I/O driver status flags. + */ + sdflags_t flags; + /** + * Input circular buffer. + */ + uint8_t ib[SERIAL_BUFFERS_SIZE]; + /** + * Output circular buffer. + */ + uint8_t ob[SERIAL_BUFFERS_SIZE]; +}; + +/** + * @brief LPC214x Serial Driver configuration structure. + * @details An instance of this structure must be passed to @p sdStart() + * in order to configure and start a serial driver operations. + */ +typedef struct { + uint32_t speed; + uint32_t lcr; + uint32_t fcr; +} SerialDriverConfig; + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +/** @cond never*/ +#if USE_LPC214x_UART0 +extern SerialDriver SD1; +#endif +#if USE_LPC214x_UART1 +extern SerialDriver SD2; +#endif + +#ifdef __cplusplus +extern "C" { +#endif + void sd_lld_init(void); + void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config); + void sd_lld_stop(SerialDriver *sdp); +#ifdef __cplusplus +} +#endif +/** @endcond*/ + +#endif /* _SERIAL_LLD_H_ */ + +/** @} */ -- cgit v1.2.3