Iot Green Kit

Made by ashokr / Displays / Home Automation / IoT

About the project

Home and gardening automation with IoT network (Thread).

Project info

Difficulty: Moderate

Platforms: MikroElektronika, NXP

Estimated time: 7 days

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

	NXP Rapid IoT Prototyping Kit	x 1
	KW41z- Shield Board	x 2
	MikroElektronika - WiFi3 click	x 1
	Solenoid Valve	x 1
	LED Lamp Light	x 1

Software apps and online services

IoT Box App

Hand tools and fabrication machines

NXP MCUXpresso IDE

x 1

Story

IoT Green Kit is a smart IoT solution with NXP's Rapid IoT Kit for home automation mainly for lights and gardening. This kit forms a Thread network with connected end devices (lights or valves) and control it via COAP messages.

Note: Rapid IoT Studio is not used to develop this project.

The story starts here, started this project with thread basic demo on KW41z FRDM board and ported the project into Rapid IoT kit, Also I designed PCB's for KW41Z shield board and driver boards. LPC804 Micro is used in the shield board to send thread commands and control the IO pins. PCB's are is manufactured from JLC-PCB and Tiny KW41z modules are got it from Volansys.No mistakes, all the PCB's I made works as expected. Here is the initial Thread demo with shield boards.

IoT Tool Box App is very useful send Thread commands from mobile. Both MCU's are programmed and debugged through the SWD JTAG. To program the Rapid IoT kit I used hexiwear docking station with below configurations.

Set the jumper switches of the Docking station to 00111000 to program or debug the Wireless/KW41Z controller.

Set the jumper switches of the Docking station to 11001000 to program or debug the Application/K64F controller.

1 / 3

Since I was not using Rapid IoT Studio, I had to prepare my own bitmap images for LCD display. I used EmWin Tools and Affinity Studio for bitmap creation. In the end I interfaced the ESP click modules to project to connect with cloud. IoTBoxApp is my own private cloud I sends GET requests to read and write data in it.

And finally the working demo is here.

Schematics, diagrams and documents

Schematic Blocks

Code

LPC804 Code

/*
 * The Clear BSD License
 * Copyright (c) 2017, NXP Semiconductors, Inc.
 * All rights reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted (subject to the limitations in the disclaimer below) provided
 *  that the following conditions are met:
 *
 * o Redistributions of source code must retain the above copyright notice, this list
 *   of conditions and the following disclaimer.
 *
 * o 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.
 *
 * o 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.
 *
 * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
 * 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.
 */

#include "board.h"
#include "fsl_usart.h"

#include "pin_mux.h"
#include <stdbool.h>
#include "usart.h"
#include "timer.h"
#include "sense.h"
#include "oled.h"
#include "config.h"
/*******************************************************************************
 * Definitions
 ******************************************************************************/

#define ECHO_BUFFER_LENGTH 8
#define SUCCESS 0
#define TICK_DELAY_5S 5000
#define TICK_DELAY_2S 2000
#define TICK_DELAY_1S 2000
#define STARTUP_DELAY 1000
#define PWM_PERIOD 2000 //20ms

/*******************************************************************************
 * Prototypes
 ******************************************************************************/

/*******************************************************************************
 * Variables
 ******************************************************************************/
senseData_t value;
uint8_t app_mode = 1;
extern uint8_t field1[],field2[];
extern volatile bool wifi_connected;
extern volatile bool timeoutFlag;
extern volatile bool ap_connected;
extern volatile bool rxBlockReceived;
extern volatile int rxDataLength;
extern uint8_t app_pwmData[12];
volatile bool appReady;
volatile uint32_t g_systickCounter;

volatile bool led1_status = false;

/*******************************************************************************
 * Code
 ******************************************************************************/
void delay(uint32_t t)
{
    volatile uint32_t i = 0;
    for (i = 0; i < (540*t); ++i)
    {
        __asm("NOP"); /* delay */
    }
}

static uint8_t read_mode(){

	return (GPIO_PortRead(GPIO, APP_MODE_SW_PORT)>>APP_MODE_SW_PIN) & 0x1;
}

static void UpdateFields(){

	field1[8]= (value.temprature/100) + '0';
	field1[9]= ((value.temprature/10)%10) + '0';
	field1[10]= (value.temprature%10) + '0';

	field2[8]= (value.humidity/100) + '0';
	field2[9]= ((value.humidity/10)%10) + '0';
	field2[10]= (value.humidity%10) + '0';
}

void SysTick_Handler(void)
{

    g_systickCounter++;

}

/*!
 * @brief Main function
 */
int main(void)
{
	uint8_t ret =1;
    /* Initialize the pins. */
    BOARD_InitPins();
    /* Enable clock. */
    BOARD_InitBootClocks();
    /* Select the main clock as source clock of USART0. */
    CLOCK_Select(kUART0_Clk_From_MainClk);
    CLOCK_Select(kUART1_Clk_From_MainClk);
    /* Select the main clock as source clock of I2C0. */
    CLOCK_Select(kI2C0_Clk_From_MainClk);

    /* Set systick reload value to generate 1ms interrupt */
      if(SysTick_Config(SystemCoreClock / 100000U))
      {
          while(1)
          {
          }
      }

    Timer_Init();


    LED_BLUE_INIT(0);

    /* Initialize USART with configuration. */
    DEBUG_USARTInit();

    delay(STARTUP_DELAY);

    ESP_USARTInit();

    /* Initialize ESP with AT configuration */

	ap_connected = false;

	if(!read_mode()){

		ret = Esp_Init();
	}
	else{

		ret = Esp_AP_Init();

	}

    while (1)
    {


    	if(!ESP_GetLEDStatus()){

    		LED_BLUE_ON();
    	}
    	else{

    		LED_BLUE_OFF();
    	}



    }
}

Router Code

Lib's Part not included

   while (1)
    {

    	if(g_ButtonPress){


    		switch(g_ButtonValue){

    		case 0:


    			break;

    		case 1:

    			g_AppIndex++;
    			if(g_AppIndex>=APP_MAX_COUNT) g_AppIndex =0;
    			draw_apppage(g_AppIndex, g_AppStatus[g_AppIndex], g_AppValue[g_AppIndex]);

    			break;

    		case 2:

    			if(g_AppIndex>2){

    				g_AppValue[g_AppIndex]++;

    				if(g_AppValue[g_AppIndex]>2)g_AppValue[g_AppIndex]=0;

    				draw_textbox(g_AppIndex, g_AppValue[g_AppIndex]);

    			}
    			else{

    				if(g_AppStatus[g_AppIndex]){

						draw_togglebutton_anime(64,140,0);
						draw_appicon(g_AppIndex,0);
						Write_Node(g_AppIndex, 0);
					}
					else{

						draw_togglebutton_anime(64,140,1);
						draw_appicon(g_AppIndex,1);
						Write_Node(g_AppIndex, 1);
					}
        			g_AppStatus[g_AppIndex] = 1-g_AppStatus[g_AppIndex];
    			}

    			break;

    		case 3:


    			//g_AppIndex--;
    			//if(g_AppIndex<0 || g_AppIndex>APP_MAX_COUNT) g_AppIndex =APP_MAX_COUNT;
    			//draw_apppage(g_AppIndex, g_AppStatus[g_AppIndex], g_AppValue[g_AppIndex]);


    			break;

    		}


			g_ButtonValue = 0;
			g_ButtonPress = false;

    	}
    	else{

    		if(g_AppStatus[2]==1 ){
				App_WaitMsec(10);
				g_cloud_counter++;

				if(g_cloud_counter>= APP_CLOUD_TIMER){

					ret |= ESP_ReadCloud();
					g_cloud_counter=0;
					g_AppStatus[0] =cfield1;
					g_AppStatus[1] =cfield2;
					Write_Node(0, cfield1);
					Write_Node(1, cfield2);


				}

    		}

    	}


    }
}

Credits

ashokr

Hello! I’m Ashok. I’m currently working as software engineer. passionate about doing Hobbies Projects and Animations works.

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