/*
 * Copyright (c) 2020, Mike Wolfram
 *
 * This file is part of the modm project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
// ----------------------------------------------------------------------------

#ifndef MODM_STM32_NUCLEO_F767ZI_HPP
#define MODM_STM32_NUCLEO_F767ZI_HPP

#include <modm/platform.hpp>
#include <modm/architecture/interface/clock.hpp>
#include <modm/debug/logger.hpp>
/// @ingroup modm_board_nucleo_f767zi
#define MODM_BOARD_HAS_LOGGER

using namespace modm::platform;

namespace Board
{
/// @ingroup modm_board_nucleo_f767zi
/// @{
using namespace modm::literals;

/// STM32F7 running at 216MHz from the external 8MHz clock
struct SystemClock
{
	static constexpr uint32_t Frequency = 216_MHz;
	static constexpr uint32_t Apb1 = Frequency / 4;
	static constexpr uint32_t Apb2 = Frequency / 2;
	static constexpr uint32_t Apb1Timer = Apb1 * 2;
	static constexpr uint32_t Apb2Timer = Apb2 * 2;

	static constexpr uint32_t Ethernet = Frequency;

	static constexpr uint32_t Adc1 = Apb2;
	static constexpr uint32_t Adc2 = Apb2;
	static constexpr uint32_t Adc3 = Apb2;

	static constexpr uint32_t Dac = Apb1;

	static constexpr uint32_t Spi1 = Apb2;
	static constexpr uint32_t Spi2 = Apb1;
	static constexpr uint32_t Spi3 = Apb1;
	static constexpr uint32_t Spi4 = Apb2;
	static constexpr uint32_t Spi5 = Apb2;
	static constexpr uint32_t Spi6 = Apb2;

	static constexpr uint32_t Usart1 = Apb2;
	static constexpr uint32_t Usart2 = Apb1;
	static constexpr uint32_t Usart3 = Apb1;
	static constexpr uint32_t Uart4  = Apb1;
	static constexpr uint32_t Uart5  = Apb1;
	static constexpr uint32_t Usart6 = Apb2;
	static constexpr uint32_t Uart7  = Apb1;
	static constexpr uint32_t Uart8  = Apb1;

	static constexpr uint32_t Can1 = Apb1;
	static constexpr uint32_t Can2 = Apb1;

	static constexpr uint32_t I2c1 = Apb1;
	static constexpr uint32_t I2c2 = Apb1;
	static constexpr uint32_t I2c3 = Apb1;
	static constexpr uint32_t I2c4 = Apb1;

	static constexpr uint32_t Timer1  = Apb2Timer;
	static constexpr uint32_t Timer2  = Apb1Timer;
	static constexpr uint32_t Timer3  = Apb1Timer;
	static constexpr uint32_t Timer4  = Apb1Timer;
	static constexpr uint32_t Timer5  = Apb1Timer;
	static constexpr uint32_t Timer6  = Apb1Timer;
	static constexpr uint32_t Timer7  = Apb1Timer;
	static constexpr uint32_t Timer8  = Apb2Timer;
	static constexpr uint32_t Timer9  = Apb2Timer;
	static constexpr uint32_t Timer10 = Apb2Timer;
	static constexpr uint32_t Timer11 = Apb2Timer;
	static constexpr uint32_t Timer12 = Apb1Timer;
	static constexpr uint32_t Timer13 = Apb1Timer;
	static constexpr uint32_t Timer14 = Apb1Timer;
	static constexpr uint32_t Iwdg = Rcc::LsiFrequency;

	static bool inline
	enable()
	{
		Rcc::enableExternalClock(); // 8 MHz
		const Rcc::PllFactors pllFactors{
			.pllM = 4,		// 8MHz / M=4   -> 2MHz
			.pllN = 216,	// 2MHz * N=216 -> 432MHz
			.pllP = 2		// 432MHz / P=2 -> 216MHz = F_cpu
			//.pllQ = 9		// 432MHz / P=2 -> 48MHz (USB, etc.)
		};
		Rcc::enablePll(Rcc::PllSource::ExternalClock, pllFactors);

		// Required for 216 MHz operation
		Rcc::enableOverdriveMode();
		Rcc::setFlashLatency<Frequency>();
		Rcc::enableSystemClock(Rcc::SystemClockSource::Pll);
		// APB1 is running at 54MHz, since AHB / 4 = 54MHz (= limit)
		Rcc::setApb1Prescaler(Rcc::Apb1Prescaler::Div4);
		// APB2 is running at 108MHz, since AHB / 2 = 108MHz (= limit)
		Rcc::setApb2Prescaler(Rcc::Apb2Prescaler::Div2);
		Rcc::updateCoreFrequency<Frequency>();

		return true;
	}
};

// Arduino Footprint
#include "nucleo144_arduino.hpp"

using Button = GpioInputC13;

using LedGreen = GpioOutputB0;	// LED1 [Green]
using LedBlue = GpioOutputB7;	// LED2 [Blue]
using LedRed = GpioOutputB14;	// LED3 [Red]
using Leds = SoftwareGpioPort< LedRed, LedBlue, LedGreen >;
/// @}

namespace stlink
{
/// @ingroup modm_board_nucleo_f767zi
/// @{
using Tx = GpioOutputD8;
using Rx = GpioInputD9;
using Uart = BufferedUart<UsartHal3, UartTxBuffer<2048>>;
/// @}
}

/// @ingroup modm_board_nucleo_f767zi
/// @{
using LoggerDevice = modm::IODeviceWrapper< stlink::Uart, modm::IOBuffer::BlockIfFull >;

inline void
initialize()
{
    SystemClock::enable();
    SysTickTimer::initialize<SystemClock>();

    stlink::Uart::connect<stlink::Tx::Tx, stlink::Rx::Rx>();
    stlink::Uart::initialize<SystemClock, 115200_Bd>();

    LedGreen::setOutput(modm::Gpio::Low);
    LedBlue::setOutput(modm::Gpio::Low);
    LedRed::setOutput(modm::Gpio::Low);

    Button::setInput();
}
/// @}

}

#endif  // MODM_STM32_NUCLEO_F767ZI_HPP
