037c9ea0a4
Summary The naming standard at https://cwiki.apache.org/confluence/display/NUTTX/Naming+FAQ requires that all MCU-private files begin with the name of the architecture, not up_. This PR addresses only these name changes for the up_*.h files. There are only three, but almost 1680 files that include them: up_arch.h up_internal.h up_vfork.h The only change to the files is from including up_arch.h to arm_arch.h (for example). The entire job required to be compatible with that Naming Convention will also require changing the naming of the up_() functions that are used only within arch/arm and board/arm. Impact There should be not impact of this change (other that one step toward more consistent naming). Testing stm32f4discovery:netnsh
139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/****************************************************************************
|
|
* boards/arm/stm32/mikroe_stm32f4/src/stm32_pwm.c
|
|
*
|
|
* Copyright (C) 2011, 2013, 2015 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/board.h>
|
|
#include <nuttx/timers/pwm.h>
|
|
|
|
#include <arch/board/board.h>
|
|
|
|
#include "chip.h"
|
|
#include "arm_arch.h"
|
|
#include "stm32_pwm.h"
|
|
#include "mikroe-stm32f4.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
/* Configuration *******************************************************************/
|
|
/* PWM
|
|
*
|
|
* The mikroe_stm32f4 has no real on-board PWM devices, but the board can be
|
|
* configured to output a pulse train using TIM4 CH2. This pin is used by FSMC is
|
|
* connected to CN5 just for this purpose:
|
|
*
|
|
* PD13 FSMC_A18 / MC_TIM4_CH2OUT pin 33 (EnB)
|
|
*
|
|
* FSMC must be disabled in this case!
|
|
*/
|
|
|
|
#define HAVE_PWM 1
|
|
|
|
#ifndef CONFIG_PWM
|
|
# undef HAVE_PWM
|
|
#endif
|
|
|
|
#ifndef CONFIG_STM32_TIM4
|
|
# undef HAVE_PWM
|
|
#endif
|
|
|
|
#ifndef CONFIG_STM32_TIM4_PWM
|
|
# undef HAVE_PWM
|
|
#endif
|
|
|
|
#if CONFIG_STM32_TIM4_CHANNEL != STM32F4DISCOVERY_PWMCHANNEL
|
|
# undef HAVE_PWM
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: stm32_pwm_setup
|
|
*
|
|
* Description:
|
|
* Initialize PWM and register the PWM device.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int stm32_pwm_setup(void)
|
|
{
|
|
#ifdef HAVE_PWM
|
|
static bool initialized = false;
|
|
struct pwm_lowerhalf_s *pwm;
|
|
int ret;
|
|
|
|
/* Have we already initialized? */
|
|
|
|
if (!initialized)
|
|
{
|
|
/* Call stm32_pwminitialize() to get an instance of the PWM interface */
|
|
|
|
pwm = stm32_pwminitialize(STM32F4DISCOVERY_PWMTIMER);
|
|
if (!pwm)
|
|
{
|
|
_err("ERROR: Failed to get the STM32 PWM lower half\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Register the PWM driver at "/dev/pwm0" */
|
|
|
|
ret = pwm_register("/dev/pwm0", pwm);
|
|
if (ret < 0)
|
|
{
|
|
aerr("ERROR: pwm_register failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Now we are initialized */
|
|
|
|
initialized = true;
|
|
}
|
|
|
|
return OK;
|
|
#else
|
|
return -ENODEV;
|
|
#endif
|
|
}
|