NuttX delete accidental tone_alarm copy

platforms/nuttx/NuttX/include/cxx/tone_alarm/ToneAlarmInterface.cpp

-/****************************************************************************
- *
- *   Copyright (C) 2013-2019 PX4 Development Team. All rights reserved.
- *
- * 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 PX4 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,
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- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/**
- * @file ToneAlarmInterface.cpp
- */
-
-#include <chip/sam_pinmap.h>
-
-#include <drivers/device/device.h>
-#include <lib/drivers/tone_alarm/ToneAlarmInterface.h>
-#include <px4_defines.h>
-
-/* Check that tone alarm and HRT timers are different */
-#if defined(TONE_ALARM_CHANNEL) && defined(HRT_TIMER_CHANNEL)
-# if TONE_ALARM_CHANNEL == HRT_TIMER_CHANNEL
-#   error TONE_ALARM_CHANNEL and HRT_TIMER_CHANNEL must use different timers.
-# endif
-#endif
-
-#if defined(TONE_ALARM_TIMER)
-# error "TONE_ALARM_TIMER should not be defined, instead define TONE_ALARM_CHANNEL from 0-11"
-#endif
-
-#ifndef TONE_ALARM_CLOCK
-#define TONE_ALARM_CLOCK (BOARD_MCK_FREQUENCY/128)
-#endif
-
-/* Period of the free-running counter, in microseconds. */
-#ifndef TONE_ALARM_COUNTER_PERIOD
-#define TONE_ALARM_COUNTER_PERIOD 65536
-#endif
-
-/* Tone alarm configuration */
-#if TONE_ALARM_CHANNEL == 0 || TONE_ALARM_CHANNEL == 1 || TONE_ALARM_CHANNEL == 2
-# define TONE_ALARM_TIMER       0
-#endif
-#if TONE_ALARM_CHANNEL == 3 || TONE_ALARM_CHANNEL == 4 || TONE_ALARM_CHANNEL == 5
-# define TONE_ALARM_TIMER       1
-#endif
-#if TONE_ALARM_CHANNEL == 6 || TONE_ALARM_CHANNEL == 7 || TONE_ALARM_CHANNEL == 8
-# define TONE_ALARM_TIMER       2
-#endif
-#if TONE_ALARM_CHANNEL == 9 || TONE_ALARM_CHANNEL == 10 || TONE_ALARM_CHANNEL == 11
-# define TONE_ALARM_TIMER       3
-#endif
-
-/* HRT configuration */
-#if   TONE_ALARM_TIMER == 0
-# define HRT_TIMER_BASE                 SAM_TC012_BASE
-# if !defined(CONFIG_SAMV7_TC0)
-#  error "HRT_TIMER_CHANNEL 0-2 Require CONFIG_SAMV7_TC0=y"
-# endif
-#elif TONE_ALARM_TIMER == 1
-# define HRT_TIMER_BASE                 SAM_TC345_BASE
-# if !defined(CONFIG_SAMV7_TC1)
-#  error "HRT_TIMER_CHANNEL 3-5 Require CONFIG_SAMV7_TC1=y"
-# endif
-#elif TONE_ALARM_TIMER == 2
-# define HRT_TIMER_BASE                 SAM_TC678_BASE
-# if !defined(CONFIG_SAMV7_TC2)
-#  error "HRT_TIMER_CHANNEL 6-8 Require CONFIG_SAMV7_TC2=y"
-# endif
-#elif TONE_ALARM_TIMER == 3
-# define HRT_TIMER_BASE                 SAM_TC901_BASE
-# if !defined(CONFIG_SAMV7_TC3)
-#  error "HRT_TIMER_CHANNEL 9-11 Require CONFIG_SAMV7_TC3=y"
-# endif
-#else
-# error "HRT_TIMER_CHANNEL should be defined valid value are from 0-11"
-# endif
-
-
-/* Timer register accessors. */
-#define REG(_reg) (*(volatile uint32_t *)(SAM_TC0_BASE + SAM_TC_CHAN_OFFSET(HRT_TIMER_CHANNEL) + _reg))
-
-#define rCCR    REG(SAM_TC_CCR_OFFSET)
-#define rCMR    REG(SAM_TC_CMR_OFFSET)
-#define rCV     REG(SAM_TC_CV_OFFSET)
-#define rEMR    REG(SAM_TC_EMR_OFFSET)
-#define rIER    REG(SAM_TC_IER_OFFSET)
-#define rIDR    REG(SAM_TC_IDR_OFFSET)
-#define rIMR    REG(SAM_TC_IMR_OFFSET)
-#define rRA     REG(SAM_TC_RA_OFFSET)
-#define rRAB    REG(SAM_TC_RAB_OFFSET)
-#define rRB     REG(SAM_TC_RB_OFFSET)
-#define rRC     REG(SAM_TC_RC_OFFSET)
-#define rSMMR   REG(SAM_TC_SMMR_OFFSET)
-#define rSR     REG(SAM_TC_SR_OFFSET)
-
-void ToneAlarmInterface::init()
-{
-#ifdef GPIO_TONE_ALARM_NEG
-	px4_arch_configgpio(GPIO_TONE_ALARM_NEG);
-#else
-	// Configure the GPIO to the idle state.
-	px4_arch_configgpio(GPIO_TONE_ALARM_IDLE);
-#endif
-
-// TODO - This is dead code.
-#if TONE_ALARM_NOT_DONE
-	// Initialize the timer.
-	rCCER &= TONE_CCER;	// Unlock CCMR* registers.
-	rCCER  = TONE_CCER;
-	rCCMR1 = TONE_CCMR1;
-	rCCMR2 = TONE_CCMR2;
-	rDCR   = 0;
-	rCR1   = 0;
-	rCR2   = 0;
-	rDIER  = 0;
-	rSMCR  = 0;
-
-#ifdef rBDTR // If using an advanced timer, you need to activate the output.
-	rBDTR = ATIM_BDTR_MOE; // Enable the main output of the advanced timer.
-#endif
-
-	TONE_rCCR = 1;		// Toggle the CC output each time the count passes 1.
-	rPSC = 0;		// Default the timer to a prescale value of 1; playing notes will change this.
-	rCR1 = GTIM_CR1_CEN;	// Ensure the timer is running.
-#endif
-}
-
-void ToneAlarmInterface::start_note(unsigned frequency)
-{
-	// Calculate the signal switching period.
-	// (Signal switching period is one half of the frequency period).
-	float signal_period = (1.0f / frequency) * 0.5f;
-
-	// Calculate the hardware clock divisor rounded to the nearest integer.
-	unsigned int divisor = std::round(signal_period * TONE_ALARM_CLOCK);
-
-	// Pick the lowest prescaler value that we can use.
-	// (Note that the effective prescale value is 1 greater.)
-	unsigned int prescale = divisor / TONE_ALARM_COUNTER_PERIOD;
-
-	// Calculate the period for the selected prescaler value.
-	unsigned int period = (divisor / (prescale + 1)) - 1;
-
-// TODO - This is dead code.
-#if TONE_ALARM_NOT_DONE
-	rPSC = prescale;	// Load new prescaler.
-	rARR = period;		// Load new signal switching period.
-	rEGR = GTIM_EGR_UG;	// Force a reload of the period.
-	rCCER |= TONE_CCER;	// Enable the output.
-#else
-	prescale++;
-	period++;
-#endif
-
-	// Configure the GPIO to enable timer output.
-	px4_arch_configgpio(GPIO_TONE_ALARM);
-}
-
-void ToneAlarmInterface::stop_note()
-{
-	// Stop the current note.
-// TODO - This is dead code.
-#if TONE_ALARM_NOT_DONE
-	rCCER &= ~TONE_CCER;
-#endif
-	// Ensure the GPIO is not driving the speaker.
-	px4_arch_configgpio(GPIO_TONE_ALARM_IDLE);
-}