/* ------------------------------------------
* Copyright (c) 2016, Synopsys, Inc. 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 Synopsys, Inc., nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.

* 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.
*
* version 2016.01
* date 2014-12-17
* author Wayne Ren(Wei.Ren@synopsys.com)
--------------------------------------------- */

/**
* defgroup        EMBARC_APP_GPIO                embARC GPIO Example
* ingroup        EMBARC_APPS_TOTAL
* ingroup        EMBARC_APPS_BOARD_EMSK
* ingroup        EMBARC_APPS_BAREMETAL
* rief        embARC Example for testing designware gpio module
*
* details
* ### Extra Required Tools
*
* ### Extra Required Peripherals
*
* ### Design Concept
*     This example is designed to show how to use device [GPIO HAL API](dev_gpio.h) in embARC.
*
* ### Usage Manual
*     Test cases for DW GPIO driver. In this example, the functions of the LEDs, buttons, and DIP switches are tested.
*     
*
* ### Extra Comments
*
*/

/**
* file
* ingroup        EMBARC_APP_GPIO
* rief        example of timer0 and gpio
*/

/**
* addtogroup        EMBARC_APP_GPIO
* @{
*/

#include "embARC.h"
#include "embARC_debug.h"

static volatile int t0 = 0;
static volatile int t1 = 0;
static DEV_GPIO_PTR port_th;

/**
* rief        timer0 interrupt service routine
* param[in]        *ptr        interrupt handler param
*/
/*static void timer0_isr(void *ptr)
{
       
        uint32_t data1;
        timer_int_clear(TIMER_0);
        t0++;*/
//        EMBARC_PRINTF("t0:%d ",t0);
//        port_th->gpio_write(0x1,0xF);//给地址位0xF写数据0x1
//        port_th->gpio_read(&data1,0xF);
//        EMBARC_PRINTF("data1 value : 0x%x ", data1);
//}
static  void  delay(uint32_t z)
{
        uint32_t i,j;
        for(i=360;i>0;i--)
        {
                for(j=z;j>0;j--);
        }
}
static  void init1()
{
        port_th = gpio_get_dev(DW_GPIO_PORT_D);//
        port_th->gpio_open(0xF);
        port_th->gpio_write(0x3,0xF);//给地址位0xF写数据0x3，初始化,数据总线拉高
//        port_th->gpio_read(&data,0xF);
}
static  void init2()
{
        port_th = gpio_get_dev(DW_GPIO_PORT_D);//
        port_th->gpio_open(0xF);
        port_th->gpio_write(0x1,0xF);//给地址位0xF写数据0x1，输入数据，数据总线拉低
//        port_th->gpio_read(&data,0xF);
}
int main(void)
{
        uint32_t sensor_data[4];
        cpu_lock();
        board_init(); /* board init */
        uint32_t data;
        long t;
        while(1)
        {
                init1();//初始化，数据总线拉高
                delay(500);
                init2();//数据总线拉低，1ms
                delay(50);
                init1();//数据总线拉高，20us
                delay(1);
                init2();//数据总线拉低，80us
                delay(4);
                init1();//数据总线拉高，80us
//                delay(4);
        /*        init2();//数据总线拉低，50us
                delay(3);
                init1();//数据总线拉高，26us
                delay(2);
                init2();//数据总线拉低，50us */
                port_th->gpio_read(sensor_data[0],0xF);
                EMBARC_PRINTF("sensor_data[0]:0x%x ",sensor_data[0]);
        //        delay(3);
        //        init1();//给地址位0xF写数据0x3,即响应主机的起始信号，拉高70us
                //写读数据的指令，读传感器地址位的数据，然后以10进制数读出
        //        port_th->gpio_read(sensor_data[0],0xF);
                port_th->gpio_read(sensor_data[1],0xF);
                t   = ((long)sensor_data[0] << 8) + ((long)sensor_data[1] & 0xF8);
                t >>= 3;
                //conversion (t = t*0,0625) in Degrees
                 t *= 6250;
                 EMBARC_PRINTF("Temp: %2d.%2d C ", (int)(t/100000), (int)(((t-(t/100000)*100000))/1000) );
                 port_th->gpio_read(sensor_data[2],0xF);
                port_th->gpio_read(sensor_data[3],0xF);
                t   = ((long)sensor_data[2] << 8) + ((long)sensor_data[3] & 0xF8);
                t >>= 3;
                //conversion (t = t*0,0625) in Degrees
                 t *= 6250;
                 EMBARC_PRINTF("Temp: %2d.%2d C ", (int)(t/100000), (int)(((t-(t/100000)*100000))/1000) );
                delay(700);
        }
        cpu_unlock(); /* unlock system */

        while (1);
        return E_SYS;
}

/** @} */