/**
 * Copyright (c) 2017 - 2021, Nordic Semiconductor ASA
 *
 * 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, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, 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 Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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.
 *
 */
#include "nrfx_spim.h"
#include "app_util_platform.h"
#include "nrf_gpio.h"
#include "nrf_delay.h"
#include "boards.h"
#include "app_error.h"
#include <string.h>
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include <nrfx_rtc.h>
#include <nrfx_clock.h>
#include "nrf_drv_power.h"
#include "nrf_drv_rtc.h"
#include "nrf_drv_clock.h"
#define NRFX_SPIM_SCK_PIN       NRF_GPIO_PIN_MAP(1,10)
#define NRFX_SPIM_MOSI_PIN      NRF_GPIO_PIN_MAP(1,14)
#define NRFX_SPIM_MISO_PIN      28
#define NRFX_SPIM_SS_PIN        NRF_GPIO_PIN_MAP(1,12)
#define NRFX_SPIM_DCX_PIN       NRF_GPIO_PIN_MAP(1,13)
#define NRFX_SPIM_RST_PIN       NRF_GPIO_PIN_MAP(1,11)


#define USER_TEST_PIN_1       NRF_GPIO_PIN_MAP(0,30)
const nrf_drv_rtc_t rtc = NRF_DRV_RTC_INSTANCE(1); /**< Declaring an instance of nrf_drv_rtc for RTC1. */
#define COMPARE_COUNTERTIME  (3UL)                                        /**< Get Compare event COMPARE_TIME seconds after the counter starts from 0. */


#define SPI_INSTANCE  3                                           /**< SPI instance index. */
static const nrfx_spim_t spi = NRFX_SPIM_INSTANCE(SPI_INSTANCE);  /**< SPI instance. */
static volatile bool sg_spi_xfer_done = true;
static volatile bool change_flag = true;
static volatile bool spi_xfer_done;  /**< Flag used to indicate that SPI instance completed the transfer. */

//#define TEST_STRING "Nordic123456789012345678901234567890"
//static uint8_t       m_tx_buf[] = TEST_STRING;           /**< TX buffer. */
//static uint8_t       m_rx_buf[sizeof(TEST_STRING) + 1];  /**< RX buffer. */
//static const uint8_t m_length = sizeof(m_tx_buf);        /**< Transfer length. */

//uint8_t       data1[1]	={0x2b};
//uint8_t 			data3[5] = {0xf8, 0xf8, 0xf8, 0xf8,0xf8};	
//uint8_t       data6[6]	={0x2b,0xf8, 0xf8, 0xf8, 0xf8,0xf8};

/** @brief: Function for handling the RTC0 interrupts.
 * Triggered on TICK and COMPARE0 match.
 */
static void rtc_handler(nrf_drv_rtc_int_type_t int_type)
{
/*   
	if (int_type == NRF_DRV_RTC_INT_COMPARE0)
    {
        nrf_gpio_pin_toggle(COMPARE_EVENT_OUTPUT);
    }
    else if (int_type == NRF_DRV_RTC_INT_TICK)
    {
        nrf_gpio_pin_toggle(TICK_EVENT_OUTPUT);
    }
	*/
	if(int_type == NRF_DRV_RTC_INT_TICK )
	{
		 nrf_gpio_pin_toggle(USER_TEST_PIN_1);
	}
}


void spim_event_handler(nrfx_spim_evt_t const * p_event,
                       void *                  p_context)
{
    spi_xfer_done = true;
    NRF_LOG_INFO("Transfer completed.");
	/*
    if (m_rx_buf[0] != 0)
    {
        NRF_LOG_INFO(" Received:");
        NRF_LOG_HEXDUMP_INFO(m_rx_buf, strlen((const char *)m_rx_buf));
    }
	*/
}

void UserGpioTestInit(void)
{
    nrf_gpio_cfg_output(USER_TEST_PIN_1);
}

/** @brief Function starting the internal LFCLK XTAL oscillator.
 */
static void lfclk_config(void)
{
    ret_code_t err_code = nrf_drv_clock_init();
    APP_ERROR_CHECK(err_code);

    nrf_drv_clock_lfclk_request(NULL);
}


/** @brief Function initialization and configuration of RTC driver instance.
 */
static void rtc_config(void)
{
    uint32_t err_code;

    //Initialize RTC instance
    nrf_drv_rtc_config_t config = NRF_DRV_RTC_DEFAULT_CONFIG;
   // config.prescaler = 4095;
	 //config.prescaler = 0;
	  config.prescaler = 16;
    err_code = nrf_drv_rtc_init(&rtc, &config, rtc_handler);
    APP_ERROR_CHECK(err_code);

    //Enable tick event & interrupt
    nrf_drv_rtc_tick_enable(&rtc,true);

    //Set compare channel to trigger interrupt after COMPARE_COUNTERTIME seconds
    err_code = nrf_drv_rtc_cc_set(&rtc,0,COMPARE_COUNTERTIME * 8,true);
    APP_ERROR_CHECK(err_code);

    //Power on RTC instance
    nrf_drv_rtc_enable(&rtc);
}




int main(void)
{
		UserGpioTestInit();
	
	  lfclk_config();
		rtc_config();
		
    nrfx_spim_config_t spi_config = NRFX_SPIM_DEFAULT_CONFIG;
    spi_config.frequency      = NRF_SPIM_FREQ_8M;
	//	spi_config.frequency      = NRF_SPIM_FREQ_1M;
    spi_config.ss_pin         = NRFX_SPIM_SS_PIN;
    spi_config.miso_pin       = NRFX_SPIM_MISO_PIN;
    spi_config.mosi_pin       = NRFX_SPIM_MOSI_PIN;
    spi_config.sck_pin        = NRFX_SPIM_SCK_PIN;
    spi_config.dcx_pin        = NRFX_SPIM_DCX_PIN;
    spi_config.use_hw_ss      = true;
    spi_config.irq_priority = 6;
    spi_config.ss_active_high = false;
    APP_ERROR_CHECK(nrfx_spim_init(&spi, &spi_config, spim_event_handler, NULL));

    NRF_LOG_INFO("NRFX SPIM example started.");
	  
		uint8_t       data6[6]	={0x2b,0xfA, 0xfC, 0xfD, 0xfE,0xf8};
    while (1)
    {
			spi_xfer_done = false;
			nrfx_spim_xfer_desc_t xfer_desc3 = NRFX_SPIM_XFER_TRX(data6, 6, NULL, 0);
			APP_ERROR_CHECK(nrfx_spim_xfer_dcx(&spi, &xfer_desc3, 0, 1));
			while (!spi_xfer_done)
			{
				//	__WFE();
			}
			nrf_delay_ms(5);
    }
   
}
