mirror of
https://github.com/apache/nuttx.git
synced 2026-05-20 20:44:39 +08:00
examples/serialrx added by Bob Doison
This commit is contained in:
Gregory Nutt
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,96 @@
|
||||
/****************************************************************************
|
||||
* arch/arm/src/sam34/sam_tc.h
|
||||
*
|
||||
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* 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 NuttX nor the names of its 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ARCH_ARM_SRC_SAM34_TC_H
|
||||
#define __ARCH_ARM_SRC_SAM34_TC_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include "chip.h"
|
||||
#include "chip/sam_tc.h"
|
||||
|
||||
#ifdef CONFIG_TIMER
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
#define EXTERN extern "C"
|
||||
extern "C" {
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: sam_tcinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the timer. The timer is initialized and
|
||||
* registers as 'devpath. The initial state of the timer is
|
||||
* disabled.
|
||||
*
|
||||
* Input Parameters:
|
||||
* devpath - The full path to the timer. This should be of the form
|
||||
* /dev/tc0
|
||||
* irq - irq associated with the timer
|
||||
* Returned Values:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#if defined(CONFIG_SAM34_TC0) || defined(CONFIG_SAM34_TC1) || defined(CONFIG_SAM34_TC2) || defined(CONFIG_SAM34_TC3) || defined(CONFIG_SAM34_TC4) || defined(CONFIG_SAM34_TC5)
|
||||
EXTERN void sam_tcinitialize(FAR const char *devpath, int irq);
|
||||
#endif
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __ASSEMBLY__ */
|
||||
#endif /* CONFIG_TIMER */
|
||||
#endif /* __ARCH_ARM_SRC_SAM34_TC_H */
|
||||
+567
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,270 @@
|
||||
/****************************************************************************
|
||||
* include/nuttx/timer.h
|
||||
*
|
||||
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* 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 NuttX nor the names of its 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef __INCLUDE_NUTTX_TIMER_H
|
||||
#define __INCLUDE_NUTTX_TIMER_H
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <nuttx/compiler.h>
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/fs/ioctl.h>
|
||||
|
||||
#ifdef CONFIG_TIMER
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
/* IOCTL Commands ***********************************************************/
|
||||
/* The timer driver uses a standard character driver framework. However,
|
||||
* since the timer driver is a device control interface and not a data
|
||||
* transfer interface, the majority of the functionality is implemented in
|
||||
* driver ioctl calls. The timer ioctl commands are lised below:
|
||||
*
|
||||
* These are detected and handled by the "upper half" timer driver.
|
||||
*
|
||||
* TCIOC_START - Start the timer
|
||||
* Argument: Ignored
|
||||
* TCIOC_STOP - Stop the timer
|
||||
* Argument: Ignored
|
||||
* TCIOC_GETSTATUS - Get the status of the timer.
|
||||
* Argument: A writeable pointer to struct timer_status_s.
|
||||
* TCIOC_SETTIMEOUT - Reset the timer timeout to this value
|
||||
* Argument: A 32-bit timeout value in microseconds.
|
||||
* TCIOC_CAPTURE - Do not reset. Instead, called this handler.
|
||||
* Argument: A pointer to struct timer_capture_s.
|
||||
*/
|
||||
#warning "may change TCIOC_SETTIMEOUT to pass pointer to 64bit nanoseconds or timespec structure"
|
||||
#define TCIOC_START _TCIOC(0x001)
|
||||
#define TCIOC_STOP _TCIOC(0x002)
|
||||
#define TCIOC_GETSTATUS _TCIOC(0x003)
|
||||
#define TCIOC_SETTIMEOUT _TCIOC(0x004)
|
||||
#define TCIOC_CAPTURE _TCIOC(0x005)
|
||||
|
||||
/* Bit Settings *************************************************************/
|
||||
/* Bit settings for the struct timer_status_s flags field */
|
||||
|
||||
#define TCFLAGS_ACTIVE (1 << 0) /* 1=The timer is running */
|
||||
#define TCFLAGS_CAPTURE (1 << 1) /* 1=Call the user function when the
|
||||
* timer expires */
|
||||
|
||||
/****************************************************************************
|
||||
* Public Types
|
||||
****************************************************************************/
|
||||
/* This is the type of the argument passed to the TCIOC_CAPTURE ioctl */
|
||||
|
||||
struct timer_capture_s
|
||||
{
|
||||
CODE xcpt_t newhandler; /* The new timer capture handler */
|
||||
CODE xcpt_t oldhandler; /* The previous timer capture handler (if any) */
|
||||
};
|
||||
|
||||
/* This is the type of the argument passed to the TCIOC_GETSTATUS ioctl and
|
||||
* and returned by the "lower half" getstatus() method.
|
||||
*/
|
||||
|
||||
struct timer_status_s
|
||||
{
|
||||
uint32_t flags; /* See TCFLAGS_* definitions above */
|
||||
uint32_t timeout; /* The current timeout setting (in milliseconds) */
|
||||
uint32_t timeleft; /* Time left until the timer expiration
|
||||
* (in milliseconds) */
|
||||
};
|
||||
|
||||
/* This structure provides the "lower-half" driver operations available to
|
||||
* the "upper-half" driver.
|
||||
*/
|
||||
|
||||
struct timer_lowerhalf_s;
|
||||
struct timer_ops_s
|
||||
{
|
||||
/* Required methods ********************************************************/
|
||||
/* Start the timer, resetting the time to the current timeout */
|
||||
|
||||
CODE int (*start)(FAR struct timer_lowerhalf_s *lower);
|
||||
|
||||
/* Stop the timer */
|
||||
|
||||
CODE int (*stop)(FAR struct timer_lowerhalf_s *lower);
|
||||
|
||||
/* Get the current timer status */
|
||||
|
||||
CODE int (*getstatus)(FAR struct timer_lowerhalf_s *lower,
|
||||
FAR struct timer_status_s *status);
|
||||
|
||||
/* Set a new timeout value (and reset the timer) */
|
||||
|
||||
CODE int (*settimeout)(FAR struct timer_lowerhalf_s *lower,
|
||||
uint32_t timeout);
|
||||
|
||||
/* Call this user provider timeout handler on timeout.
|
||||
* NOTE: Providing handler==NULL disable.
|
||||
*/
|
||||
|
||||
CODE xcpt_t (*capture)(FAR struct timer_lowerhalf_s *lower,
|
||||
CODE xcpt_t handler);
|
||||
|
||||
/* Any ioctl commands that are not recognized by the "upper-half" driver
|
||||
* are forwarded to the lower half driver through this method.
|
||||
*/
|
||||
|
||||
CODE int (*ioctl)(FAR struct timer_lowerhalf_s *lower, int cmd,
|
||||
unsigned long arg);
|
||||
};
|
||||
|
||||
/* This structure provides the publicly visible representation of the
|
||||
* "lower-half" driver state structure. "lower half" drivers will have an
|
||||
* internal structure definition that will be cast-compatible with this
|
||||
* structure definitions.
|
||||
*/
|
||||
|
||||
struct timer_lowerhalf_s
|
||||
{
|
||||
/* Publicly visible portion of the "lower-half" driver state structure. */
|
||||
|
||||
FAR const struct timer_ops_s *ops; /* Lower half operations */
|
||||
|
||||
/* The remainder of the structure is used by the "lower-half" driver
|
||||
* for whatever state storage that it may need.
|
||||
*/
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Public Data
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef __cplusplus
|
||||
#define EXTERN extern "C"
|
||||
extern "C" {
|
||||
#else
|
||||
#define EXTERN extern
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* "Upper-Half" Timer Driver Interfaces
|
||||
****************************************************************************/
|
||||
/****************************************************************************
|
||||
* Name: timer_register
|
||||
*
|
||||
* Description:
|
||||
* This function binds an instance of a "lower half" timer driver with the
|
||||
* "upper half" timer device and registers that device so that can be used
|
||||
* by application code.
|
||||
*
|
||||
* When this function is called, the "lower half" driver should be in the
|
||||
* disabled state (as if the stop() method had already been called).
|
||||
*
|
||||
* NOTE: Normally, this function would not be called by application code.
|
||||
* Rather it is called indirectly through the architecture-specific
|
||||
* interface up_timerinitialize() described below.
|
||||
*
|
||||
* Input parameters:
|
||||
* dev path - The full path to the driver to be registers in the NuttX
|
||||
* pseudo-filesystem. The recommended convention is to name all timer
|
||||
* drivers as "/dev/timer0", "/dev/timer1", etc. where the driver
|
||||
* path differs only in the "minor" number at the end of the device name.
|
||||
* lower - A pointer to an instance of lower half timer driver. This
|
||||
* instance is bound to the timer driver and must persists as long as
|
||||
* the driver persists.
|
||||
*
|
||||
* Returned Value:
|
||||
* On success, a non-NULL handle is returned to the caller. In the event
|
||||
* of any failure, a NULL value is returned.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
EXTERN FAR void *timer_register(FAR const char *path,
|
||||
FAR struct timer_lowerhalf_s *lower);
|
||||
|
||||
/****************************************************************************
|
||||
* Name: timer_unregister
|
||||
*
|
||||
* Description:
|
||||
* This function can be called to disable and unregister the timer
|
||||
* device driver.
|
||||
*
|
||||
* Input parameters:
|
||||
* handle - This is the handle that was returned by timer_register()
|
||||
*
|
||||
* Returned Value:
|
||||
* None
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
EXTERN void timer_unregister(FAR void *handle);
|
||||
|
||||
/****************************************************************************
|
||||
* Platform-Independent "Lower-Half" Timer Driver Interfaces
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Architecture-specific Application Interfaces
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_timerinitialize()
|
||||
*
|
||||
* Description:
|
||||
* Perform architecture-specific initialization of the timer hardware.
|
||||
* This interface should be provided by all configurations using
|
||||
* to avoid exposed platform-dependent logic.
|
||||
*
|
||||
* At a minimum, this function should call timer_register() which is
|
||||
* described above.
|
||||
*
|
||||
* Input parameters:
|
||||
* None
|
||||
*
|
||||
* Returned Value:
|
||||
* Zero on success; a negated errno value on failure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
EXTERN int up_timerinitialize(void);
|
||||
|
||||
#undef EXTERN
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_TIMER */
|
||||
#endif /* __INCLUDE_NUTTX_TIMER_H */
|
||||
Reference in New Issue
Block a user