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main.cpp
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main.cpp
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#include "mbed.h"
#include "kor_char_code.h"
#include <stdint.h>
#include <string>
#define COV_RATIO 0.2 //ug/mmm / mv
#define NO_DUST_VOLTAGE 400 //mv
#define SYS_VOLTAGE 5000
Serial pc(USBTX,USBRX); // tx, rx
Serial TFT(PC_02,PC_03); // tx, rx
Serial lora(PA_13,PA_14); // tx, rx
Timer timer;
AnalogIn dustVal(A0);
DigitalOut myled(D6);
int flag_first = 0;
int analogVal_u16 =0;
int count;
char buffer[200]={0, };
int calibration(int m)
{
static int _buff[10], sum;
const int _buff_max = 10;
int i;
if(flag_first == 0) {
flag_first = 1;
for(i = 0, sum = 0; i < _buff_max; i++) {
_buff[i] = m;
sum += _buff[i];
}
return m;
} else {
sum -= _buff[0];
for(i = 0; i < (_buff_max - 1); i++) {
_buff[i] = _buff[i + 1];
}
_buff[9] = m;
sum += _buff[9];
i = sum / 10.0;
return i;
}
}
void statusPrint(float _dustDensity)
{
if( (_dustDensity>0) && (_dustDensity<=15) ) {
TFT.printf("$f,0,STATUS :,1,100,#\r\n");
TFT.printf("$f,1,0,174,240#\r\n");
TFT.printf("$f,0,GOOD :> ,140,100,#\r\n");
TFT.printf("$f,1,0,0,0#\r\n");
TFT.printf("$i,4,1,280,135,130,130#");
}
else if( (_dustDensity>=16) && (_dustDensity<=50) ) {
TFT.printf("$f,0,STATUS :,1,100,#\r\n");
TFT.printf("$f,1,120,254,98#\r\n");
TFT.printf("$f,0,NORMAL :) ,140,100,#\r\n");
TFT.printf("$f,1,0,0,0#\r\n");
TFT.printf("$i,4,2,280,135,130,130#");
}
else if( (_dustDensity>=51) && (_dustDensity<=100) ) {
TFT.printf("$f,0,STATUS :,1,100,#\r\n");
TFT.printf("$f,1,255,255,75#\r\n");
TFT.printf("$f,0,BAD :( ,140,100,#\r\n");
TFT.printf("$f,1,0,0,0#\r\n");
TFT.printf("$i,4,3,280,135,130,130#");
}
else if(_dustDensity>=101) {
TFT.printf("$f,0,STATUS :,1,100,#\r\n");
TFT.printf("$f,1,255,51,51#\r\n");
TFT.printf("$f,0,DANGER :<,140,100,#\r\n");
TFT.printf("$f,1,0,0,0#\r\n");
TFT.printf("$i,4,4,280,135,130,130#");
} else {
TFT.printf("$f,0,STATUS :,1,100,#\r\n");
TFT.printf("$f,1,0,0,0#\r\n");
TFT.printf("$f,0,WAIT UNTIL 20 SEC !,140,100,#\r\n");
TFT.printf("$f,1,0,0,0#\r\n");
TFT.printf("$i,4,4,280,135,130,130#");
}
}
float dustAnalSensing()
{
int samplingTime = 280;
int deltaTime = 40;
int sleepTime = 9680;
myled = 0;
wait_us(samplingTime);
analogVal_u16 = dustVal.read_u16();
wait_us(deltaTime);
myled = 1;
wait_us(sleepTime);
return analogVal_u16;
}
void recv(void){
//string str;
lora.gets(buffer,100);
//str = buffer;
//lora.printf(buffer);
if(strstr(buffer, "JOINED") != NULL){
//if(strstr(buffer, "completed") != NULL){
for(int i=0; i< 3; i++){
wait_us(10);
TFT.printf("$i,4,5,75,135,130,130#");
lora.printf("recv - JOIN compelted\r\n");
}
}
if(strstr(buffer, "1320") != NULL){
for(int i=0; i< 3; i++){
wait_us(10);
TFT.printf("$i,4,6,75,135,130,130#");
}
}
if(strstr(buffer, "2320") != NULL){
for(int i=0; i< 3; i++){
wait_us(10);
TFT.printf("$i,4,7,75,135,130,130#");
}
}
if(strstr(buffer, "3320") != NULL){
for(int i=0; i< 3; i++){
wait_us(10);
TFT.printf("$i,4,8,75,135,130,130#");
}
}
//memset(buffer, '0', 99);
}
int main()
{
TFT.baud(115200);
lora.baud(38400);
//lora.baud(115200);
pc.baud(115200);
//pc.baud(38400);
unsigned int curr_Time1;
unsigned int curr_Time2;
int caliAnalogVal_u16;
int digitalVal =0;
int dustDensity =0;
TFT.printf("$i,1,1,good.jpg#");
TFT.printf("$i,1,2,soso.jpg#");
TFT.printf("$i,1,3,not_good.jpg#");
TFT.printf("$i,1,4,bad.jpg#");
TFT.printf("$i,1,5,ready.jpg#");
TFT.printf("$i,1,6,work.jpg#");
TFT.printf("$i,1,7,snow.jpg#");
TFT.printf("$i,1,8,slip.jpg#");
TFT.printf("$l,0,255,255,255#"); // 사각형 색(흰색) 지정
lora.printf("AT+RST\r\n");
//lora.printf("LRW 70\r\n");
timer.start();
curr_Time1 = timer.read();
//lora.printf("attach before\r\n");
lora.attach(&recv,Serial::RxIrq);
//lora.printf("attach after\r\n");
while(1)
{
TFT.printf("$f,4,2,#"); // 글자 크기 조절
curr_Time2 = timer.read();
if( curr_Time2-curr_Time1 >= 2)
{
//lora.printf("2sec\r\n");
analogVal_u16 = dustAnalSensing();
caliAnalogVal_u16 = calibration(analogVal_u16); // 보정
digitalVal = (SYS_VOLTAGE / 4096) * caliAnalogVal_u16; //adc변경 (mv)
if(digitalVal >= NO_DUST_VOLTAGE) {
digitalVal -= NO_DUST_VOLTAGE;
dustDensity = digitalVal * COV_RATIO; // Voltage(mv)값을 dust density로 변경 (ug/m3)
dustDensity -= 50;
if(dustDensity < 0){
dustDensity = 0;
}
} else {
dustDensity = 0;
}
TFT.printf("$l,2,1,1,500,130,1#"); //흰 사각형 출력(지우기)
TFT.printf("$f,0,Fine Dust(PM 2.5),1,10,#\r\n");
TFT.printf("$f,0,Dust Value : %d (ug/m3),1,40,#\r\n",dustDensity);
TFT.printf("$f,0,Current Time : %d (s),1,70,#\r\n",(int)timer.read());
statusPrint(dustDensity);
curr_Time1 = curr_Time2;
//lora.printf("AT+SEND 01015445//\r\n");
count += 1;
}
if( count == 20){
if( dustDensity >= 100 ){
lora.printf("AT+SEND 010%d\r\n",dustDensity);
//lora.printf("LRW 31 0%d cnf 1\r\n",dustDensity);
}
else if( dustDensity > 10 && dustDensity < 100 ){
lora.printf("AT+SEND 01%d\r\n",dustDensity);
//lora.printf("LRW 31 %d cnf 1\r\n",dustDensity);
}
else if( dustDensity < 10 ){
lora.printf("AT+SEND 010%d\r\n",dustDensity);
//lora.printf("LRW 31 0%d cnf 1\r\n",dustDensity);
}
count =0;
}
}
}