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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1834 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2010-04-02 14:38:08 +00:00
parent 946e895798
commit 3902190248
8 changed files with 499 additions and 11 deletions
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5
boards/EA_LPCXPRESSO_BB_1114/board.c
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@ -42,6 +42,11 @@ void hwinit1(void) {
*/
halInit();
/*
* Extra, board-specific, initializations.
*/
LPC_IOCON->PIO0_7 = 0xC0; /* Disables pull-up on LED output. */
/*
* ChibiOS/RT initialization.
*/

2
demos/ARMCM0-LPC1114-GCC/halconf.h
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@ -103,7 +103,7 @@
* @brief Enables the SERIAL subsystem.
*/
#if !defined(CH_HAL_USE_SERIAL) || defined(__DOXYGEN__)
#define CH_HAL_USE_SERIAL FALSE
#define CH_HAL_USE_SERIAL TRUE
#endif
/*

6
demos/ARMCM0-LPC1114-GCC/mcuconf.h
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@ -25,11 +25,7 @@
* is enabled in halconf.h.
*
* IRQ priorities:
* 3 Lowest, priority level reserved for PENDSV, do not share or
* use for non-OS-capable low priority handlers.
* 2...1 Normal IRQs priority levels, use for OS-capable handlers.
* 0 Used by SVCALL, do not share or use for non-OS-capable high
* priority handlers.
* 3...0 Lowest...highest.
*/
/*

3
os/hal/platforms/LPC111x/platform.mk
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@ -1,6 +1,7 @@
# List of all the LPC111x platform files.
PLATFORMSRC = ${CHIBIOS}/os/hal/platforms/LPC111x/hal_lld.c \
${CHIBIOS}/os/hal/platforms/LPC111x/pal_lld.c
${CHIBIOS}/os/hal/platforms/LPC111x/pal_lld.c \
${CHIBIOS}/os/hal/platforms/LPC111x/serial_lld.c
# Required include directories
PLATFORMINC = ${CHIBIOS}/os/hal/platforms/LPC111x

331
os/hal/platforms/LPC111x/serial_lld.c Normal file
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@ -0,0 +1,331 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 <http://www.gnu.org/licenses/>.
*/
/**
* @file LPC111x/serial_lld.c
* @brief LPC111x low level serial driver code.
*
* @addtogroup LPC111x_SERIAL
* @{
*/
#include "ch.h"
#include "hal.h"
#if CH_HAL_USE_SERIAL || defined(__DOXYGEN__)
#define IIR_SRC_MASK 0x0F
#define IIR_SRC_NONE 0x01
#define IIR_SRC_TX 0x02
#define IIR_SRC_RX 0x04
#define IIR_SRC_ERROR 0x06
#define IIR_SRC_TIMEOUT 0x0C
#define IER_RBR 1
#define IER_THRE 2
#define IER_STATUS 4
#define IIR_INT_PENDING 1
#define LCR_WL5 0
#define LCR_WL6 1
#define LCR_WL7 2
#define LCR_WL8 3
#define LCR_STOP1 0
#define LCR_STOP2 4
#define LCR_NOPARITY 0
#define LCR_PARITYODD 0x08
#define LCR_PARITYEVEN 0x18
#define LCR_PARITYONE 0x28
#define LCR_PARITYZERO 0x38
#define LCR_BREAK_ON 0x40
#define LCR_DLAB 0x80
#define FCR_ENABLE 1
#define FCR_RXRESET 2
#define FCR_TXRESET 4
#define FCR_TRIGGER0 0
#define FCR_TRIGGER1 0x40
#define FCR_TRIGGER2 0x80
#define FCR_TRIGGER3 0xC0
#define LSR_RBR_FULL 1
#define LSR_OVERRUN 2
#define LSR_PARITY 4
#define LSR_FRAMING 8
#define LSR_BREAK 0x10
#define LSR_THRE 0x20
#define LSR_TEMT 0x40
#define LSR_RXFE 0x80
#define TER_ENABLE 0x80
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
#if USE_LPC111x_UART0 || defined(__DOXYGEN__)
/** @brief UART0 serial driver identifier.*/
SerialDriver SD1;
#endif
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/** @brief Driver default configuration.*/
static const SerialConfig default_config = {
SERIAL_DEFAULT_BITRATE,
LCR_WL8 | LCR_STOP1 | LCR_NOPARITY,
FCR_TRIGGER0
};
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/**
* @brief UART initialization.
*
* @param[in] sdp communication channel associated to the UART
*/
static void uart_init(SerialDriver *sdp) {
LPC_UART_TypeDef *u = sdp->uart;
uint32_t div = PCLK / (sdp->config->sc_speed << 4);
u->UART_LCR = sdp->config->sc_lcr | LCR_DLAB;
u->UART_DLL = div;
u->UART_DLM = div >> 8;
u->UART_LCR = sdp->config->sc_lcr;
u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | sdp->config->sc_fcr;
u->UART_ACR = 0;
u->UART_FDR = 0x10;
u->UART_TER = TER_ENABLE;
u->UART_IER = IER_RBR | IER_STATUS;
}
/**
* @brief UART de-initialization.
*
* @param[in] u pointer to an UART I/O block
*/
static void uart_deinit(UART *u) {
u->UART_LCR = LCR_DLAB;
u->UART_DLL = 1;
u->UART_DLM = 0;
u->UART_LCR = 0;
u->UART_FDR = 0x10;
u->UART_IER = 0;
u->UART_FCR = FCR_RXRESET | FCR_TXRESET;
u->UART_ACR = 0;
u->UART_TER = TER_ENABLE;
}
/**
* @brief Error handling routine.
*
* @param[in] sdp communication channel associated to the UART
* @param[in] err UART LSR register value
*/
static void set_error(SerialDriver *sdp, IOREG32 err) {
sdflags_t sts = 0;
if (err & LSR_OVERRUN)
sts |= SD_OVERRUN_ERROR;
if (err & LSR_PARITY)
sts |= SD_PARITY_ERROR;
if (err & LSR_FRAMING)
sts |= SD_FRAMING_ERROR;
if (err & LSR_BREAK)
sts |= SD_BREAK_DETECTED;
chSysLockFromIsr();
sdAddFlagsI(sdp, sts);
chSysUnlockFromIsr();
}
/**
* @brief Common IRQ handler.
* @note Tries hard to clear all the pending interrupt sources, we don't
* want to go through the whole ISR and have another interrupt soon
* after.
*
* @param[in] u pointer to an UART I/O block
* @param[in] sdp communication channel associated to the UART
*/
static void serve_interrupt(SerialDriver *sdp) {
UART *u = sdp->uart;
while (TRUE) {
switch (u->UART_IIR & IIR_SRC_MASK) {
case IIR_SRC_NONE:
return;
case IIR_SRC_ERROR:
set_error(sdp, u->UART_LSR);
break;
case IIR_SRC_TIMEOUT:
case IIR_SRC_RX:
chSysLockFromIsr();
if (chIQIsEmpty(&sdp->iqueue))
chEvtBroadcastI(&sdp->ievent);
chSysUnlockFromIsr();
while (u->UART_LSR & LSR_RBR_FULL) {
chSysLockFromIsr();
if (chIQPutI(&sdp->iqueue, u->UART_RBR) < Q_OK)
sdAddFlagsI(sdp, SD_OVERRUN_ERROR);
chSysUnlockFromIsr();
}
break;
case IIR_SRC_TX:
{
int i = LPC214x_UART_FIFO_PRELOAD;
do {
msg_t b;
chSysLockFromIsr();
b = chOQGetI(&sdp->oqueue);
chSysUnlockFromIsr();
if (b < Q_OK) {
u->UART_IER &= ~IER_THRE;
chSysLockFromIsr();
chEvtBroadcastI(&sdp->oevent);
chSysUnlockFromIsr();
break;
}
u->UART_THR = b;
} while (--i);
}
break;
default:
(void) u->UART_THR;
(void) u->UART_RBR;
}
}
}
/**
* @brief Attempts a TX FIFO preload.
*/
static void preload(SerialDriver *sdp) {
UART *u = sdp->uart;
if (u->UART_LSR & LSR_THRE) {
int i = LPC214x_UART_FIFO_PRELOAD;
do {
msg_t b = chOQGetI(&sdp->oqueue);
if (b < Q_OK) {
chEvtBroadcastI(&sdp->oevent);
return;
}
u->UART_THR = b;
} while (--i);
}
u->UART_IER |= IER_THRE;
}
/**
* @brief Driver SD1 output notification.
*/
#if USE_LPC111x_UART0 || defined(__DOXYGEN__)
static void notify1(void) {
preload(&SD1);
}
#endif
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/**
* @brief UART0 IRQ handler.
*/
#if USE_LPC111x_UART0 || defined(__DOXYGEN__)
CH_IRQ_HANDLER(UART0IrqHandler) {
CH_IRQ_PROLOGUE();
serve_interrupt(&SD1);
VICVectAddr = 0;
CH_IRQ_EPILOGUE();
}
#endif
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level serial driver initialization.
*/
void sd_lld_init(void) {
#if USE_LPC111x_UART0
sdObjectInit(&SD1, NULL, notify1);
SD1.uart = U0Base;
SetVICVector(UART0IrqHandler, LPC214x_UART0_PRIORITY, SOURCE_UART0);
#endif
}
/**
* @brief Low level serial driver configuration and (re)start.
*
* @param[in] sdp pointer to a @p SerialDriver object
*/
void sd_lld_start(SerialDriver *sdp) {
if (sdp->config == NULL)
sdp->config = &default_config;
if (sdp->state == SD_STOP) {
#if USE_LPC111x_UART0
if (&SD1 == sdp) {
PCONP = (PCONP & PCALL) | PCUART0;
VICIntEnable = INTMASK(SOURCE_UART0);
}
#endif
}
uart_init(sdp);
}
/**
* @brief Low level serial driver stop.
* @details De-initializes the UART, stops the associated clock, resets the
* interrupt vector.
*
* @param[in] sdp pointer to a @p SerialDriver object
*/
void sd_lld_stop(SerialDriver *sdp) {
if (sdp->state == SD_READY) {
uart_deinit(sdp->uart);
#if USE_LPC111x_UART0
if (&SD1 == sdp) {
PCONP = (PCONP & PCALL) & ~PCUART0;
VICIntEnClear = INTMASK(SOURCE_UART0);
return;
}
#endif
}
}
#endif /* CH_HAL_USE_SERIAL */
/** @} */

158
os/hal/platforms/LPC111x/serial_lld.h Normal file
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@ -0,0 +1,158 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 <http://www.gnu.org/licenses/>.
*/
/**
* @file LPC111x/serial_lld.h
* @brief LPC111x low level serial driver header.
*
* @addtogroup LPC111x_SERIAL
* @{
*/
#ifndef _SERIAL_LLD_H_
#define _SERIAL_LLD_H_
#if CH_HAL_USE_SERIAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief UART0 driver enable switch.
* @details If set to @p TRUE the support for UART0 is included.
* @note The default is @p TRUE .
*/
#if !defined(USE_LPC111x_UART0) || defined(__DOXYGEN__)
#define USE_LPC111x_UART0 TRUE
#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 1.
* @note An high value reduces the number of interrupts generated but can
* also increase the worst case interrupt response time because the
* preload loops.
*/
#if !defined(LPC111x_UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
#define LPC111x_UART_FIFO_PRELOAD 16
#endif
/**
* @brief UART0 interrupt priority level setting.
*/
#if !defined(LPC111x_UART0_PRIORITY) || defined(__DOXYGEN__)
#define LPC111x_UART0_PRIORITY 3
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if (LPC111x_UART_FIFO_PRELOAD < 1) || (LPC111x_UART_FIFO_PRELOAD > 16)
#error "invalid LPC214x_UART_FIFO_PRELOAD setting"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Serial Driver condition flags type.
*/
typedef uint32_t sdflags_t;
/**
* @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 {
/**
* @brief Bit rate.
*/
uint32_t sc_speed;
/**
* @brief Initialization value for the LCR register.
*/
uint32_t sc_lcr;
/**
* @brief Initialization value for the FCR register.
*/
uint32_t sc_fcr;
} SerialConfig;
/**
* @brief @p SerialDriver specific data.
*/
#define _serial_driver_data \
_base_asynchronous_channel_data \
/* Driver state.*/ \
sdstate_t state; \
/* Current configuration data.*/ \
const SerialConfig *config; \
/* Input queue.*/ \
InputQueue iqueue; \
/* Output queue.*/ \
OutputQueue oqueue; \
/* Status Change @p EventSource.*/ \
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]; \
/* End of the mandatory fields.*/ \
/* Pointer to the USART registers block.*/ \
LPC_UART_TypeDef *uart;
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if USE_LPC111x_UART0 && !defined(__DOXYGEN__)
extern SerialDriver SD1;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void sd_lld_init(void);
void sd_lld_start(SerialDriver *sdp);
void sd_lld_stop(SerialDriver *sdp);
#ifdef __cplusplus
}
#endif
#endif /* CH_HAL_USE_SERIAL */
#endif /* _SERIAL_LLD_H_ */
/** @} */

3
os/hal/platforms/LPC214x/serial_lld.c
View File

@ -208,7 +208,6 @@ static void notify1(void) {
}
#endif
/**
* @brief Driver SD2 output notification.
*/
@ -238,7 +237,6 @@ CH_IRQ_HANDLER(UART0IrqHandler) {
}
#endif
/**
* @brief UART1 IRQ handler.
*/
@ -254,7 +252,6 @@ CH_IRQ_HANDLER(UART1IrqHandler) {
}
#endif
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/

2
os/hal/platforms/LPC214x/serial_lld.h
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@ -64,7 +64,7 @@
* also increase the worst case interrupt response time because the
* preload loops.
*/
#if !defined(UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
#if !defined(LPC214x_UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
#define LPC214x_UART_FIFO_PRELOAD 16
#endif