/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */

/** @file
* @brief Example template project.
* @defgroup nrf_templates_example Example Template
*
*/

#include <stdbool.h>
#include "nrf_gpio.h"
#include "nrf_drv_twi.h"
#include "bsp.h"
#include "app_error.h"
#include "nrf_drv_config.h"
#include "app_util_platform.h"
#include "nrf_delay.h"

// TWI event handler. Processing TWI events originating from
// nrf_drv_twi_tx()
static void twi_event_handler(nrf_drv_twi_evt_t *evt){
     
    // Light up LED 1 if device found
    if(evt->type == NRF_DRV_TWI_TX_DONE)
    {
			  nrf_gpio_pin_set(LED_3);
//        nrf_gpio_pin_clear(LED_3);
    }
}

static void gpio_init()
{
    nrf_gpio_cfg_output(LED_3);

}


/**
 * @brief Function for application main entry.
 */
 uint8_t dummy_data1;
int main(void)
{
    gpio_init();
   
    ret_code_t ret_code; 

    const nrf_drv_twi_t           p_twi_instance = NRF_DRV_TWI_INSTANCE(1); // Set up TWI instance 1 with default values
    
    // EITHER CONFIGURE THE TWI MODULE WITH DEFAULT VALUES:
//    nrf_drv_twi_config_t    p_twi_config = NRF_DRV_TWI_DEFAULT_CONFIG(1);// Set up TWI configuration default values
    
    // OR CHOOSE YOU OWN TWI MODULE SETTINGS LIKE THIS:
    nrf_drv_twi_config_t    p_twi_config;
    p_twi_config.scl = 7;
    p_twi_config.sda = 30;
    p_twi_config.frequency = NRF_TWI_FREQ_400K;
    p_twi_config.interrupt_priority = APP_IRQ_PRIORITY_LOW;

    ret_code = nrf_drv_twi_init(&p_twi_instance, &p_twi_config, twi_event_handler); // Initiate twi driver with instance and configuration values
    APP_ERROR_CHECK(ret_code); // Check for errors in return value
    
    nrf_drv_twi_enable(&p_twi_instance); // Enable the TWI instance

    static uint8_t dummy_data[2] = {0x20,0x55}; // Declare some dummy data to use for our search for devices on the TWI bus
   
//WRITE
		nrf_drv_twi_tx(&p_twi_instance, 0x6F,dummy_data, 2, false);
		nrf_delay_ms(500); 
//READ
		nrf_drv_twi_tx(&p_twi_instance, 0x6F,&dummy_data[0], 1, true);
			nrf_drv_twi_rx(&p_twi_instance, 0x6F,&dummy_data1, 1, false);

    while (true)
    {
        // Do nothing
    }
}
/** @} */