//*****************************************************************************
//
//! @file freertos_lowpower.c
//!
//! @brief Example of the app running under FreeRTOS.
//!
//! This example implements LED task within the FreeRTOS framework. It monitors
//! three On-board buttons, and toggles respective on-board LEDs in response.
//! To save power, this application is compiled without print
//! statements by default. To enable them, add the following project-level
//! macro definitions.
//!
//! AM_DEBUG_PRINTF
//!
//! If enabled, debug messages will be sent over ITM.
//
//*****************************************************************************

//*****************************************************************************
//
// Copyright (c) 2019, Ambiq Micro
// 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 of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
// 
// Third party software included in this distribution is subject to the
// additional license terms as defined in the /docs/licenses directory.
// 
// 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 HOLDER 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.
//
// This is part of revision v2.2.0-7-g63f7c2ba1 of the AmbiqSuite Development Package.
//
//*****************************************************************************

//*****************************************************************************
//
// This application has a large number of common include files. For
// convenience, we'll collect them all together in a single header and include
// that everywhere.
//
//*****************************************************************************
#include "freertos_lowpower.h"
#include "rtos.h"


//*****************************************************************************
//
// Enable printing to the console.
//
//*****************************************************************************
void
enable_print_interface(void)
{
    //
    // Initialize a debug printing interface.
    //
    am_bsp_itm_printf_enable();
}

//*****************************************************************************
//
// Disable printing to the console.
//
//*****************************************************************************
void
disable_print_interface(void)
{
    //
    // Deinitialize a debug printing interface.
    //
    am_bsp_itm_printf_disable();
}

//*****************************************************************************
//
// Main Function
//
//*****************************************************************************
int
main(void)
{
    //
    // Set the clock frequency.
    //
    am_hal_clkgen_control(AM_HAL_CLKGEN_CONTROL_SYSCLK_MAX, 0);

    //
    // Set the default cache configuration
    //
    am_hal_cachectrl_config(&am_hal_cachectrl_defaults);
    am_hal_cachectrl_enable();


#ifndef NOFPU
    //
    // Enable the floating point module, and configure the core for lazy
    // stacking.
    //
    am_hal_sysctrl_fpu_enable();
    am_hal_sysctrl_fpu_stacking_enable(true);
#else
    am_hal_sysctrl_fpu_disable();
#endif

    //
    // Configure the board for low power.
    //
    am_bsp_low_power_init();

    // Turn off unused Flash & SRAM
    am_hal_pwrctrl_memory_enable(AM_HAL_PWRCTRL_MEM_SRAM_96K);
    am_hal_pwrctrl_memory_enable(AM_HAL_PWRCTRL_MEM_FLASH_512K);

    //
    // Enable printing to the console.
    //
#ifdef AM_DEBUG_PRINTF
    enable_print_interface();
#endif

    //
    // Initialize plotting interface.
    //
    am_util_debug_printf("FreeRTOS Low Power Example\n");

    //
    // Run the application.
    //
    run_tasks();

    //
    // We shouldn't ever get here.
    //
    while (1)
    {
    }

}

