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LPC43xx: Add timer driver; configs/bambino-200e: Add support for timer driver

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This commit is contained in:
Alan Carvalho de Assis 2016-11-23 13:33:51 -06:00 committed by Gregory Nutt
parent bbc17abf68
commit 7dbc25b02b
10 changed files with 1054 additions and 6 deletions
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10
arch/arm/src/lpc43xx/Kconfig
View File

@ -269,8 +269,9 @@ config LPC43_SSP1
default n
config LPC43_TMR0
bool "ADC1"
bool "Timer 0"
default n
select LPC43_TIMER
config LPC43_TMR1
bool "Timer 1"
@ -279,10 +280,17 @@ config LPC43_TMR1
config LPC43_TMR2
bool "Timer 2"
default n
select LPC43_TIMER
config LPC43_TMR3
bool "Timer 3"
default n
select LPC43_TIMER
config LPC43_TIMER
bool
default n
select ARCH_HAVE_EXTCLK
config LPC43_USART0
bool "USART0"

6
arch/arm/src/lpc43xx/Make.defs
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@ -154,6 +154,10 @@ CHIP_CSRCS += lpc43_ssp.c
endif
endif
ifeq ($(CONFIG_LPC43_TIMER),y)
CHIP_CSRCS += lpc43_timer.c
endif
ifeq ($(CONFIG_LPC43_RIT),y)
CHIP_CSRCS += lpc43_rit.c
endif
@ -196,4 +200,4 @@ CHIP_CSRCS += lpc43_usb0dev.c
endif
endif
-include chip/spifi/src/Make.defs
-include chip/spifi/src/Make.defs

4
arch/arm/src/lpc43xx/chip/lpc43_timer.h
View File

@ -42,10 +42,14 @@
#include <nuttx/config.h>
#include "chip.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#define TMR_RVALUE_MASK (0xffffffff)
/* Register offsets *****************************************************************/
#define LPC43_TMR_IR_OFFSET 0x0000 /* Interrupt Register */

771
arch/arm/src/lpc43xx/lpc43_timer.c Normal file
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@ -0,0 +1,771 @@
/****************************************************************************
* arch/arm/src/lpc43/lpc43_timer.c
*
* Copyright (C) 2016 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* Alan Carvalho de Assis <acassis@gmail.com>
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/arch.h>
#include <sys/types.h>
#include <stdint.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/timers/timer.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "lpc43_timer.h"
#if defined(CONFIG_TIMER) && (defined(CONFIG_LPC43_TMR0) || \
defined(CONFIG_LPC43_TMR1) || defined(CONFIG_LPC43_TMR2) || \
defined(CONFIG_LPC43_TMR3) )
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifndef CONFIG_DEBUG_TIMER_INFO
# undef CONFIG_LPC43_TMR_REGDEBUG
#endif
/* Clocking *****************************************************************/
/* TODO: Allow selection of any of the input clocks */
#define TMR_FCLK (BOARD_FCLKOUT_FREQUENCY)
#define TMR_MAXTIMEOUT ((1000000ULL * (1ULL + TMR_RVALUE_MASK)) / TMR_FCLK)
/****************************************************************************
* Private Types
****************************************************************************/
/* This structure provides the private representation of the "lower-half"
* driver state structure. This structure must be cast-compatible with the
* timer_lowerhalf_s structure.
*/
struct lpc43_lowerhalf_s
{
FAR const struct timer_ops_s *ops; /* Lower half operations */
/* Private data */
uint32_t base; /* Base address of the timer */
tccb_t callback; /* Current user interrupt callback */
FAR void *arg; /* Argument passed to the callback function */
uint32_t timeout; /* The current timeout value (us) */
uint32_t adjustment; /* time lost due to clock resolution truncation (us) */
uint32_t clkticks; /* actual clock ticks for current interval */
bool started; /* The timer has been started */
uint16_t tmrid; /* Timer id */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* Register operations ******************************************************/
#ifdef CONFIG_LPC43_TMR_REGDEBUG
static uint32_t lpc43_getreg(uint32_t addr);
static void lpc43_putreg(uint32_t val, uint32_t addr);
#else
# define lpc43_getreg(addr) getreg32(addr)
# define lpc43_putreg(val,addr) putreg32(val,addr)
#endif
/* Interrupt handling *******************************************************/
static int lpc43_interrupt(int irq, FAR void *context);
/* "Lower half" driver methods **********************************************/
static int lpc43_start(FAR struct timer_lowerhalf_s *lower);
static int lpc43_stop(FAR struct timer_lowerhalf_s *lower);
static int lpc43_getstatus(FAR struct timer_lowerhalf_s *lower,
FAR struct timer_status_s *status);
static int lpc43_settimeout(FAR struct timer_lowerhalf_s *lower,
uint32_t timeout);
static void lpc43_setcallback(FAR struct timer_lowerhalf_s *lower,
tccb_t callback, FAR void *arg);
static int lpc43_ioctl(FAR struct timer_lowerhalf_s *lower, int cmd,
unsigned long arg);
/****************************************************************************
* Private Data
****************************************************************************/
/* "Lower half" driver methods */
static const struct timer_ops_s g_tmrops =
{
.start = lpc43_start,
.stop = lpc43_stop,
.getstatus = lpc43_getstatus,
.settimeout = lpc43_settimeout,
.setcallback = lpc43_setcallback,
.ioctl = lpc43_ioctl,
};
/* "Lower half" driver state */
/* TODO - allocating all 6 now, even though we might not need them.
* May want to allocate the right number to not be wasteful.
*/
static struct lpc43_lowerhalf_s g_tmrdevs[4];
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: lpc43_getreg
*
* Description:
* Get the contents of a register
*
****************************************************************************/
#ifdef CONFIG_LPC43_TMR_REGDEBUG
static uint32_t lpc43_getreg(uint32_t addr)
{
static uint32_t prevaddr = 0;
static uint32_t count = 0;
static uint32_t preval = 0;
/* Read the value from the register */
uint32_t val = getreg32(addr);
/* Is this the same value that we read from the same registe last time?
* Are we polling the register? If so, suppress some of the output.
*/
if (addr == prevaddr && val == preval)
{
if (count == 0xffffffff || ++count > 3)
{
if (count == 4)
{
tmrinfo("...\n");
}
return val;
}
}
/* No this is a new address or value */
else
{
/* Did we print "..." for the previous value? */
if (count > 3)
{
/* Yes.. then show how many times the value repeated */
tmrinfo("[repeats %d more times]\n", count-3);
}
/* Save the new address, value, and count */
prevaddr = addr;
preval = val;
count = 1;
}
/* Show the register value read */
tmrinfo("%08lx->%08lx\n", addr, val);
return val;
}
#endif
/****************************************************************************
* Name: lpc43_putreg
*
* Description:
* Set the contents of an LPC43 register to a value
*
****************************************************************************/
#ifdef CONFIG_LPC43_TMR_REGDEBUG
static void lpc43_putreg(uint32_t val, uint32_t addr)
{
/* Show the register value being written */
tmrinfo("%08lx<-%08lx\n", addr, val);
/* Write the value */
putreg32(val, addr);
}
#endif
void tmr_clk_enable(uint16_t tmrid)
{
uint32_t regval;
/* Enable Timer 0 */
if (tmrid == 0)
{
regval = getreg32(LPC43_CCU1_M4_TIMER0_CFG);
regval |= CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER0_CFG);
}
/* Enable Timer 1 */
if (tmrid == 1)
{
regval = getreg32(LPC43_CCU1_M4_TIMER1_CFG);
regval |= CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER1_CFG);
}
/* Enable Timer 2 */
if (tmrid == 2)
{
regval = getreg32(LPC43_CCU1_M4_TIMER2_CFG);
regval |= CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER2_CFG);
}
/* Enable Timer 3 */
if (tmrid == 3)
{
regval = getreg32(LPC43_CCU1_M4_TIMER3_CFG);
regval |= CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER3_CFG);
}
}
void tmr_clk_disable(uint16_t tmrid)
{
uint32_t regval;
/* Enable Timer 0 */
if (tmrid == 0)
{
regval = getreg32(LPC43_CCU1_M4_TIMER0_CFG);
regval &= ~CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER0_CFG);
}
/* Enable Timer 1 */
if (tmrid == 1)
{
regval = getreg32(LPC43_CCU1_M4_TIMER1_CFG);
regval &= ~CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER1_CFG);
}
/* Enable Timer 2 */
if (tmrid == 2)
{
regval = getreg32(LPC43_CCU1_M4_TIMER2_CFG);
regval &= ~CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER2_CFG);
}
/* Enable Timer 3 */
if (tmrid == 3)
{
regval = getreg32(LPC43_CCU1_M4_TIMER3_CFG);
regval &= ~CCU_CLK_CFG_RUN;
putreg32(regval, LPC43_CCU1_M4_TIMER3_CFG);
}
}
/****************************************************************************
* Name: lpc43_interrupt
*
* Description:
* TC interrupt
*
* Input Parameters:
* Usual interrupt callback arguments.
*
* Returned Values:
* Always returns OK.
*
****************************************************************************/
static int lpc43_interrupt(int irq, FAR void *context)
{
uint8_t chan_int = 0x0f;
FAR struct lpc43_lowerhalf_s *priv = &g_tmrdevs[irq-LPC43M4_IRQ_TIMER0];
tmrinfo("Entry\n");
DEBUGASSERT((irq >= LPC43M4_IRQ_TIMER0) && (irq <= LPC43M4_IRQ_TIMER3));
/* Check if the interrupt is really pending */
if ((lpc43_getreg(priv->base + LPC43_TMR_IR_OFFSET) & chan_int) != 0)
{
uint32_t timeout;
/* Is there a registered callback? If the callback has been
* nullified, the timer will be stopped.
*/
if (priv->callback && priv->callback(&priv->timeout, priv->arg))
{
/* Calculate new ticks / dither adjustment */
priv->clkticks =((uint64_t)(priv->adjustment + priv->timeout)) *
TMR_FCLK / 1000000;
/* Set next interval interval. TODO: make sure the interval is not
* so soon it will be missed!
*/
lpc43_putreg(priv->clkticks, priv->base + LPC43_TMR_PR_OFFSET);
/* Truncated timeout */
timeout = (1000000ULL * priv->clkticks) / TMR_FCLK;
/* Truncated time to be added to next interval (dither) */
priv->adjustment = (priv->adjustment + priv->timeout) - timeout;
}
else
{
/* No callback or the callback returned false.. stop the timer */
lpc43_stop((FAR struct timer_lowerhalf_s *)priv);
tmrinfo("Stopped\n");
}
/* Clear the interrupts */
lpc43_putreg(chan_int, priv->base + LPC43_TMR_IR_OFFSET);
}
return OK;
}
/****************************************************************************
* Name: lpc43_start
*
* Description:
* Start the timer, resetting the time to the current timeout,
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower-half"
* driver state structure.
*
* Returned Values:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
static int lpc43_start(FAR struct timer_lowerhalf_s *lower)
{
FAR struct lpc43_lowerhalf_s *priv = (FAR struct lpc43_lowerhalf_s *)lower;
uint32_t presc_val;
tmrinfo("Entry\n");
DEBUGASSERT(priv);
if (priv->started)
{
return -EINVAL;
}
/* Enable timer clock */
tmr_clk_enable(priv->tmrid);
/* Set it to Timer Mode */
lpc43_putreg(0, priv->base + LPC43_TMR_CTCR_OFFSET);
/* Disable the timer */
lpc43_putreg(0, priv->base + LPC43_TMR_TCR_OFFSET);
/* Set prescaler to increase TC each 1 us */
presc_val = TMR_FCLK / 1000000;
lpc43_putreg(presc_val - 1, priv->base + LPC43_TMR_PR_OFFSET);
/* Set MR0 with a large enough initial value */
lpc43_putreg(10000000, priv->base + LPC43_TMR_MR0_OFFSET);
if (priv->callback)
{
/* Enable Match on MR0 generate interrupt and auto-restart */
lpc43_putreg(3, priv->base + LPC43_TMR_MCR_OFFSET);
}
/* Enable the timer */
lpc43_putreg(TMR_TCR_EN, priv->base + LPC43_TMR_TCR_OFFSET);
priv->started = true;
return OK;
}
/****************************************************************************
* Name: lpc43_stop
*
* Description:
* Stop the timer
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower-half"
* driver state structure.
*
* Returned Values:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
static int lpc43_stop(FAR struct timer_lowerhalf_s *lower)
{
FAR struct lpc43_lowerhalf_s *priv = (FAR struct lpc43_lowerhalf_s *)lower;
tmrinfo("Entry\n");
DEBUGASSERT(priv);
if (!priv->started)
{
return -EINVAL;
}
/* Disable timer */
lpc43_putreg(0, priv->base + LPC43_TMR_TCR_OFFSET);
/* Disable interrupt */
lpc43_putreg(0, priv->base + LPC43_TMR_MCR_OFFSET);
/* Disable timer clock */
tmr_clk_disable(priv->tmrid);
priv->started = false;
return OK;
}
/****************************************************************************
* Name: lpc43_getstatus
*
* Description:
* Get the current timer status
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower-
* half" driver state structure.
* status - The location to return the status information.
*
* Returned Values:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
static int lpc43_getstatus(FAR struct timer_lowerhalf_s *lower,
FAR struct timer_status_s *status)
{
FAR struct lpc43_lowerhalf_s *priv = (FAR struct lpc43_lowerhalf_s *)lower;
uint32_t elapsed;
tmrinfo("Entry\n");
DEBUGASSERT(priv);
/* Return the status bit */
status->flags = 0;
if (priv->started)
{
status->flags |= TCFLAGS_ACTIVE;
}
if (priv->callback)
{
status->flags |= TCFLAGS_HANDLER;
}
/* Return the actual timeout is milliseconds */
status->timeout = priv->timeout;
/* Get the time remaining until the timer expires (in microseconds) */
/* TODO - check on the +1 in the time left calculation */
elapsed = lpc43_getreg(priv->base + LPC43_TMR_TC_OFFSET);
status->timeleft = ((uint64_t)priv->timeout * elapsed) /
(priv->clkticks + 1);
tmrinfo(" flags : %08x\n", status->flags);
tmrinfo(" timeout : %d\n", status->timeout);
tmrinfo(" timeleft : %d\n", status->timeleft);
return OK;
}
/****************************************************************************
* Name: lpc43_settimeout
*
* Description:
* Set a new timeout value (and reset the timer)
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower
* half" driver state structure.
* timeout - The new timeout value in milliseconds.
*
* Returned Values:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
static int lpc43_settimeout(FAR struct timer_lowerhalf_s *lower,
uint32_t timeout)
{
FAR struct lpc43_lowerhalf_s *priv = (FAR struct lpc43_lowerhalf_s *)lower;
DEBUGASSERT(priv);
if (priv->started)
{
return -EPERM;
}
tmrinfo("Entry: timeout=%d\n", timeout);
/* Can this timeout be represented? */
if (timeout < 1 || timeout > TMR_MAXTIMEOUT)
{
tmrerr("ERROR: Cannot represent timeout=%lu > %lu\n",
timeout, TMR_MAXTIMEOUT);
return -ERANGE;
}
/* Intended timeout */
priv->timeout = timeout;
/* Actual clock ticks */
priv->clkticks = (((uint64_t)timeout * TMR_FCLK) / 1000000);
/* Truncated timeout */
timeout = (1000000ULL * priv->clkticks) / TMR_FCLK;
/* Truncated time to be added to next interval (dither) */
priv->adjustment = priv->timeout - timeout;
tmrinfo("fclk=%d clkticks=%d timout=%d, adjustment=%d\n",
TMR_FCLK, priv->clkticks, priv->timeout, priv->adjustment);
return OK;
}
/****************************************************************************
* Name: lpc43_setcallback
*
* Description:
* Call this user provided timeout callback.
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower-half"
* driver state structure.
* newcallback - The new timer expiration function pointer. If this
* function pointer is NULL, then the reset-on-expiration
* behavior is restored,
*
* Returned Values:
* The previous timer expiration function pointer or NULL is there was
* no previous function pointer.
*
****************************************************************************/
static void lpc43_setcallback(FAR struct timer_lowerhalf_s *lower,
tccb_t callback, FAR void *arg)
{
FAR struct lpc43_lowerhalf_s *priv = (FAR struct lpc43_lowerhalf_s *)lower;
irqstate_t flags;
flags = enter_critical_section();
DEBUGASSERT(priv);
tmrinfo("Entry: callback=%p\n", callback);
/* Save the new callback and its argument */
priv->callback = callback;
priv->arg = arg;
leave_critical_section(flags);
}
/****************************************************************************
* Name: lpc43_ioctl
*
* Description:
* Any ioctl commands that are not recognized by the "upper-half" driver
* are forwarded to the lower half driver through this method.
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower-half"
* driver state structure.
* cmd - The ioctl command value
* arg - The optional argument that accompanies the 'cmd'. The
* interpretation of this argument depends on the particular
* command.
*
* Returned Values:
* Zero on success; a negated errno value on failure.
*
****************************************************************************/
static int lpc43_ioctl(FAR struct timer_lowerhalf_s *lower, int cmd,
unsigned long arg)
{
FAR struct lpc43_lowerhalf_s *priv = (FAR struct lpc43_lowerhalf_s *)lower;
int ret = -ENOTTY;
DEBUGASSERT(priv);
tmrinfo("Entry: cmd=%d arg=%ld\n", cmd, arg);
UNUSED(priv);
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lpc43_tmrinitialize
*
* Description:
* Initialize the timer. The timer is initialized and
* registers as 'devpath'.
*
* Input Parameters:
* devpath - The full path to the timer. This should be of the form
* /dev/tmr0
*
* Returned Values:
* None
*
****************************************************************************/
void lpc43_tmrinitialize(FAR const char *devpath, int irq)
{
FAR struct lpc43_lowerhalf_s *priv = &g_tmrdevs[irq-LPC43M4_IRQ_TIMER0];
tmrinfo("Entry: devpath=%s\n", devpath);
DEBUGASSERT((irq >= LPC43M4_IRQ_TIMER0) && (irq <= LPC43M4_IRQ_TIMER3));
/* Initialize the driver state structure. Here we assume: (1) the state
* structure lies in .bss and was zeroed at reset time. (2) This function
* is only called once so it is never necessary to re-zero the structure.
*/
switch (irq)
{
#if defined(CONFIG_LPC43_TMR0)
case LPC43M4_IRQ_TIMER0:
priv->base = LPC43_TIMER0_BASE;
priv->tmrid = 0;
tmrinfo("Using: Timer 0");
break;
#endif
#if defined(CONFIG_LPC43_TMR1)
case LPC43M4_IRQ_TIMER1:
priv->base = LPC43_TIMER1_BASE;
priv->tmrid = 1;
tmrinfo("Using: Timer 1");
break;
#endif
#if defined(CONFIG_LPC43_TMR2)
case LPC43M4_IRQ_TIMER2:
priv->base = LPC43_TIMER2_BASE;
priv->tmrid = 2;
tmrinfo("Using: Timer 2");
break;
#endif
#if defined(CONFIG_LPC43_TMR3)
case LPC43M4_IRQ_TIMER3:
priv->base = LPC43_TIMER3_BASE;
priv->tmrid = 3;
tmrinfo("Using: Timer 3");
break;
#endif
default:
ASSERT(0);
}
priv->ops = &g_tmrops;
(void)irq_attach(irq, lpc43_interrupt);
/* Enable NVIC interrupt. */
up_enable_irq(irq);
/* Register the timer driver as /dev/timerX */
(void)timer_register(devpath, (FAR struct timer_lowerhalf_s *)priv);
}
#endif /* CONFIG_TIMER && CONFIG_LPC43_TMRx */

100
arch/arm/src/lpc43xx/lpc43_timer.h Normal file
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@ -0,0 +1,100 @@
/****************************************************************************
* arch/arm/src/sam34/lpc43_tc.h
*
* Copyright (C) 2016 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* Alan Carvalho de Assis <acassis@gmail.com>
*
* 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_LPC43_TMR_H
#define __ARCH_ARM_SRC_LPC43_TMR_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
#include "chip/lpc43_timer.h"
#include "chip/lpc43_ccu.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: lpc43_tmrinitialize
*
* 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/timer0
* irq - irq associated with the timer
* Returned Values:
* None
*
****************************************************************************/
#if defined(CONFIG_LPC43_TMR0) || defined(CONFIG_LPC43_TMR1) || \
defined(CONFIG_LPC43_TMR2) || defined(CONFIG_LPC43_TMR3)
void lpc43_tmrinitialize(FAR const char *devpath, int irq);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_TIMER */
#endif /* __ARCH_ARM_SRC_LPC43_TMR_H */

16
configs/bambino-200e/nsh/defconfig
View File

@ -209,10 +209,11 @@ CONFIG_LPC43_BOOT_SPIFI=y
# CONFIG_LPC43_SPIFI is not set
# CONFIG_LPC43_SSP0 is not set
# CONFIG_LPC43_SSP1 is not set
# CONFIG_LPC43_TMR0 is not set
CONFIG_LPC43_TMR0=y
# CONFIG_LPC43_TMR1 is not set
# CONFIG_LPC43_TMR2 is not set
# CONFIG_LPC43_TMR3 is not set
CONFIG_LPC43_TIMER=y
# CONFIG_LPC43_USART0 is not set
CONFIG_LPC43_UART1=y
# CONFIG_LPC43_USART2 is not set
@ -262,7 +263,7 @@ CONFIG_ARCH_HAVE_VFORK=y
# CONFIG_ARCH_HAVE_MMU is not set
CONFIG_ARCH_HAVE_MPU=y
# CONFIG_ARCH_NAND_HWECC is not set
# CONFIG_ARCH_HAVE_EXTCLK is not set
CONFIG_ARCH_HAVE_EXTCLK=y
# CONFIG_ARCH_HAVE_POWEROFF is not set
CONFIG_ARCH_HAVE_RESET=y
# CONFIG_ARCH_USE_MPU is not set
@ -350,6 +351,7 @@ CONFIG_DISABLE_OS_API=y
CONFIG_ARCH_HAVE_TICKLESS=y
# CONFIG_SCHED_TICKLESS is not set
CONFIG_USEC_PER_TICK=10000
# CONFIG_SYSTEMTICK_EXTCLK is not set
# CONFIG_SYSTEM_TIME64 is not set
# CONFIG_CLOCK_MONOTONIC is not set
# CONFIG_ARCH_HAVE_TIMEKEEPING is not set
@ -466,7 +468,7 @@ CONFIG_DEV_NULL=y
#
# Timer Driver Support
#
# CONFIG_TIMER is not set
CONFIG_TIMER=y
# CONFIG_ONESHOT is not set
# CONFIG_RTC is not set
# CONFIG_WATCHDOG is not set
@ -809,6 +811,14 @@ CONFIG_EXAMPLES_NSH=y
# CONFIG_EXAMPLES_TCPECHO is not set
# CONFIG_EXAMPLES_TELNETD is not set
# CONFIG_EXAMPLES_TIFF is not set
CONFIG_EXAMPLES_TIMER=y
CONFIG_EXAMPLE_TIMER_DEVNAME="/dev/timer0"
CONFIG_EXAMPLE_TIMER_INTERVAL=1000000
CONFIG_EXAMPLE_TIMER_DELAY=100000
CONFIG_EXAMPLE_TIMER_NSAMPLES=20
CONFIG_EXAMPLES_TIMER_APPNAME="timer"
CONFIG_EXAMPLES_TIMER_STACKSIZE=2048
CONFIG_EXAMPLES_TIMER_PRIORITY=100
# CONFIG_EXAMPLES_TOUCHSCREEN is not set
# CONFIG_EXAMPLES_USBSERIAL is not set
# CONFIG_EXAMPLES_USBTERM is not set

4
configs/bambino-200e/src/Makefile
View File

@ -57,6 +57,10 @@ ifeq ($(CONFIG_ARCH_BUTTONS),y)
CSRCS += lpc43_buttons.c
endif
ifeq ($(CONFIG_TIMER),y)
CSRCS += lpc43_timer.c
endif
ifeq ($(CONFIG_USBMSC),y)
CSRCS += lpc43_usbmsc.c
endif

14
configs/bambino-200e/src/bambino-200e.h
View File

@ -123,5 +123,19 @@
void weak_function lpc43_sspdev_initialize(void);
/************************************************************************************
* Name: lpc43xx_timerinitialize()
*
* Description:
* Perform architecture-specific initialization of the timer hardware.
*
************************************************************************************/
#ifdef CONFIG_TIMER
int lpc43_timerinitialize(void);
#else
# define lpc43_timerinitialize() (0)
#endif
#endif /* __ASSEMBLY__ */
#endif /* _CONFIGS_BAMBINO_200E_SRC_BAMBINO_H */

10
configs/bambino-200e/src/lpc43_appinit.c
View File

@ -162,5 +162,13 @@ int board_app_initialize(uintptr_t arg)
{
/* Initialize the SPIFI block device */
return nsh_spifi_initialize();
nsh_spifi_initialize();
#ifdef CONFIG_TIMER
/* Registers the timers */
lpc43_timerinitialize();
#endif
return 0;
}

125
configs/bambino-200e/src/lpc43_timer.c Normal file
View File

@ -0,0 +1,125 @@
/****************************************************************************
* configs/bambino-200e/src/lpc43_timer.c
*
* Copyright (C) 2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
* Bob Doiron
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <debug.h>
#include <sched.h>
#include <stdio.h>
#include <fcntl.h>
#include <nuttx/arch.h>
#include <nuttx/timers/timer.h>
#include <nuttx/clock.h>
#include <nuttx/kthread.h>
#include <arch/board/board.h>
#include "lpc43_timer.h"
#ifdef CONFIG_TIMER
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#if !(defined(CONFIG_LPC43_TMR0) || defined(CONFIG_LPC43_TMR1) || defined(CONFIG_LPC43_TMR2) \
|| defined(CONFIG_LPC43_TMR3) )
# warning "CONFIG_LPC43_TMRx must be defined"
#endif
/* Select the path to the registered watchdog timer device */
#ifndef CONFIG_TIMER0_DEVPATH
# define CONFIG_TIMER0_DEVPATH "/dev/timer0"
#endif
#ifndef CONFIG_TIMER1_DEVPATH
# define CONFIG_TIMER1_DEVPATH "/dev/timer1"
#endif
#ifndef CONFIG_TIMER2_DEVPATH
# define CONFIG_TIMER2_DEVPATH "/dev/timer2"
#endif
#ifndef CONFIG_TIMER3_DEVPATH
# define CONFIG_TIMER3_DEVPATH "/dev/timer3"
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: lpc43_timerinitialize()
*
* Description:
* Perform architecture-specific initialization of the timer hardware.
*
****************************************************************************/
int lpc43_timerinitialize(void)
{
/* Initialize and register the timer devices */
#if defined(CONFIG_LPC43_TMR0)
tmrinfo("Initializing %s...\n", CONFIG_TIMER0_DEVPATH);
lpc43_tmrinitialize(CONFIG_TIMER0_DEVPATH, LPC43M4_IRQ_TIMER0);
#endif
#if defined(CONFIG_LPC43_TMR1)
tmrinfo("Initializing %s...\n", CONFIG_TIMER1_DEVPATH);
lpc43_tmrinitialize(CONFIG_TIMER1_DEVPATH, LPC43M4_IRQ_TIMER1);
#endif
#if defined(CONFIG_LPC43_TMR2)
tmrinfo("Initializing %s...\n", CONFIG_TIMER2_DEVPATH);
lpc43_tmrinitialize(CONFIG_TIMER2_DEVPATH, LPC43M4_IRQ_TIMER2);
#endif
#if defined(CONFIG_LPC43_TMR3)
tmrinfo("Initializing %s...\n", CONFIG_TIMER3_DEVPATH);
lpc43_tmrinitialize(CONFIG_TIMER3_DEVPATH, LPC43M4_IRQ_TIMER3);
#endif
return OK;
}
#endif /* CONFIG_TIMER */