portapack-mayhem/firmware/application/clock_manager.hpp
Jared Boone fe7dcdc613 Function to adjust clock generator XTAL PLL frequency.
Needed to switch PLLA to operate in fractional mode.
2015-08-24 12:09:11 -07:00

91 lines
2.1 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* This program 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 2, or (at your option)
* any later version.
*
* This program 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __CLOCK_MANAGER_H__
#define __CLOCK_MANAGER_H__
#include "ch.h"
#include "hal.h"
#include "i2c_pp.hpp"
#include "si5351.hpp"
#include "lpc43xx_cpp.hpp"
using namespace lpc43xx;
class ClockManager {
public:
constexpr ClockManager(
I2C& i2c0,
si5351::Si5351& clock_generator
) : i2c0(i2c0),
clock_generator(clock_generator)/*,
_clock_f(0)*/
{
}
void init();
void shutdown();
void run_from_irc();
void run_at_full_speed();
void start_audio_pll();
void stop_audio_pll();
void enable_codec_clocks();
void disable_codec_clocks();
void enable_first_if_clock();
void disable_first_if_clock();
void enable_second_if_clock();
void disable_second_if_clock();
void set_sampling_frequency(const uint32_t frequency);
void set_reference_ppb(const int32_t ppb);
private:
I2C& i2c0;
si5351::Si5351& clock_generator;
//uint32_t _clock_f;
void change_clock_configuration(const cgu::CLK_SEL clk_sel);
void enable_gp_clkin_source();
void disable_gp_clkin_source();
void enable_xtal_oscillator();
void disable_xtal_oscillator();
void set_m4_clock_to_irc();
void set_m4_clock_to_pll1();
void power_down_pll1();
void stop_peripherals();
void update_peripheral_clocks(const cgu::CLK_SEL clk_sel);
void start_peripherals(const cgu::CLK_SEL clk_sel);
};
#endif/*__CLOCK_MANAGER_H__*/