AD7840 DAC 轉換問題求助!!

antlu · 發表於 2019-3-10 16:42:04

各位同好先進們,我目前遇到一個問題就是我從回收場取得一片 PLC的 DAC 板子(不知好壞,沒有線路) 只見到裡面的 AD7840 想到他的14bit DAC 就興奮,於是花了許多時間把線路的局部給畫了下來, 然後想想如何使用 ARDUINO 驅動他,終極目標就是想用他來當作"數位電源供應"的前端,目前,問題在於我的電路有四個DAC 而我現在只使用兩個DAC,而卻輸出 1 時候,輸出 2 "就沒有了",(當我輸出 2 時候,輸出 1 也就沒有了!) 這電路控制使用光耦合驅動 Data1Pin DataPin2 SyncPin ClockPin ... 我需要解決就是兩個輸出都可以同時出現!!

線路圖

程式內容如下:

//MERGE ENCODER AND LCM DISPLAY
static int pinA = 2; // Our first hardware interrupt pin is digital pin 2
static int pinB = 3; // Our second hardware interrupt pin is digital pin 3
volatile byte aFlag = 0;
volatile byte bFlag = 0;
volatile long encoderPos = 0;
volatile long oldEncPos = 0;
volatile byte reading = 0;
const int EncoderSW = 4;//Enter SW
//-------------upper is encoder ------------------------------
//Define 74HC595 Connections with arduio
const int Latch=5; //LCM
const int Data=6; //LCM
const int Clock=7; //LCM
const int OEnPin=8;//output enable OPA
const int SyncPin=9;//AD7840
const int ClockPin=10;//AD7840
const int SDataPin=11;//AD7840
const int SDataPin2=12;//AD78402
const byte Volt_in =A0;
const byte Current_in = A3;
// const int Led=13;//Led on off
void LCDinit(void);
void LCDSendByte(char d,char RS);
void LCDPrint(char Line,char string[40]);//------------------------------------
String msg;
boolean flagread = false;//rs232 updata
String msgdisplay;
char msgbuf[20];//rs232 read buffer
char Echar_Array[40];//char array 15 character ------------------------------
char msgdisplay_Array[40];//display setting data --------------------------------
char V2_Array[5];
int Echar_length;
int oldstringlength;
String Echar_str;
long Echar;
long SetData;//form rs232 PC
boolean flag1st = true;
int SWcount;
int Volt_value =0;
int Curr_value =0;
int Volt_value2 =0;
int Curr_value2 =0;
int old_Volt_value;
int old_Curr_value;
boolean encoder_change_flag = false;
boolean Encoder_flag = false;
int Menu_curs;
int Old_Menu_curs;
static int display_time_count =0;
int Level0 =0;
boolean init_flag = false;
boolean Display_flag;
int old_value;
int Volt_oldstringlength;
void setup() {
pinMode(pinA, INPUT_PULLUP); // set pinA as an input _PULLUP
pinMode(pinB, INPUT_PULLUP); // set pinB as an input _PULLUP
attachInterrupt(0,PinA,RISING); // set an interrupt on PinA
attachInterrupt(1,PinB,RISING); // set an interrupt on PinB
Serial.begin(38400); // start the serial monitor link
//-------------------------------- encoder --------------------------
pinMode(EncoderSW, INPUT_PULLUP);
//------------------------------^^^-- encoder --^^^----------------------------------
//-----------------vvv-LCM -vvv-----------------
pinMode(Data, OUTPUT);
pinMode(Clock, OUTPUT);
pinMode(Latch, OUTPUT);
//----------AD7840 ------------------
pinMode(ClockPin,OUTPUT);//AD7840
pinMode(SDataPin,OUTPUT);//AD7840
pinMode(SDataPin2,OUTPUT);//AD7840
pinMode(SyncPin,OUTPUT);//AD7840
pinMode(OEnPin,OUTPUT);//OPA Vss
// pinMode(Volt_in,INPUT);//analog input
// pinMode(Current_in,INPUT);//analog input
//------------output initial ------------
digitalWrite(OEnPin,HIGH);
digitalWrite(SyncPin,HIGH);
digitalWrite(ClockPin,HIGH);
LCDinit(); //initalize LCD in 4-bit mode
LCDPrint(0,"> Set Voltage Hello");
LCDPrint(1,"> Set Current start");
LCDPrintString(0,20,"> Voltage Out 2019");
LCDPrintString(1,20,"> Current Out Feb-28");
}
void loop() {
while (!digitalRead(EncoderSW))
while(1)
{
digitalWrite(OEnPin,LOW);
GetEncoder();
encoderPos = 0;
Menu_curs += Echar;
if(Old_Menu_curs != Menu_curs)
{
Old_Menu_curs = Menu_curs;
Display_flag = true;
}
if((Menu_curs >4) ||(Menu_curs <0) )
{
Menu_curs =0;
init_flag = true;
}
switch (Menu_curs)
{
case 0:
if(Display_flag)
{
LCDPrintString(0,0, "^ Set Voltage ");
LCDWriteChar(0,0,'^');
LCDWriteChar(1,0,'>');
LCDWriteChar(0,20,'>');
LCDWriteChar(1,20,'>');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(0,1,'>');
while(Level1)
{
GetEncoder();
Volt_value +=Echar;
encoderPos = 0;
if(Volt_value != old_value)
{
old_value = Volt_value;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Volt_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,14,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(0,13," ");//clean some digit
LCDPrintString(0,14,V2_Array);//------------------
}
Echar=0;
int Volt_value100 = Volt_value * 231;//MAX IS 163
AD7840driv(SDataPin,Volt_value100);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(0,1,' ');
}
}
}
break;
case 1:
if(Display_flag)
{
LCDPrintString(1,0, "^ Set Current ");
LCDWriteChar(0,0,'>');
LCDWriteChar(1,0,'^');
LCDWriteChar(0,20,'>');
LCDWriteChar(1,20,'>');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(1,1,'>');
while(Level1)
{
GetEncoder();
Curr_value +=Echar;
encoderPos = 0;
if(Curr_value != old_value)
{
old_value = Curr_value;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Curr_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,14,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(1,13," ");//clean some digit
LCDPrintString(1,14,V2_Array);//------------------
}
Echar=0;
int Curr_value100 = Curr_value *232;
AD7840driv(SDataPin2,Curr_value100);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(1,1,' ');
}
}
}
break;
case 2:
if(Display_flag)
{
LCDPrintString(0,20, "^ Voltage Out");
LCDWriteChar(0,0,'>');
LCDWriteChar(1,0,'>');
LCDWriteChar(0,20,'^');
LCDWriteChar(1,20,'>');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(0,21,'>');
while(Level1)
{
// GetEncoder();
Volt_value2 =analogRead(Volt_in);
// encoderPos = 0;
if(Volt_value2 != old_Volt_value)
{
old_Volt_value = Volt_value2;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Volt_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,34,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(0,33," ");//clean some digit
}
Echar=0;
// AD7840driv(SDataPin,Volt_value2);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(0,21,' ');
}
}
}
break;
case 3:
if(Display_flag)
{
LCDPrintString(1,20, "^ Current Out");
LCDWriteChar(0,0,'>');
LCDWriteChar(1,0,'>');
LCDWriteChar(0,20,'>');
LCDWriteChar(1,20,'^');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(1,21,'>');
while(Level1)
{
// GetEncoder();
Curr_value2 =analogRead(Current_in);
// encoderPos = 0;
if(Curr_value2 != old_Curr_value)
{
old_Curr_value = Curr_value2;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Curr_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,34,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(1,33," ");//clean some digit
}
Echar=0;
// AD7840driv(SDataPin,Volt_value2);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(1,21,' ');
}
}
}
break;
case 4: //display screen purpose
if(Display_flag)
{
LCDclean();
LCDPrintString(0,0, "> Set Voltage");
LCDPrintString(1,0, "> Set Current");
LCDPrintString(0,20,"> Voltage Out");
LCDPrintString(1,20,"> Current Out");
LCDWriteChar(0,0,'*');
LCDWriteChar(1,0,'*');
LCDWriteChar(0,20,'*');
LCDWriteChar(1,20,'*');
Display_flag = false;
}
String V2_str = String(Volt_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,14,V2_Array);
V2_str = String(Curr_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,14,V2_Array);
Volt_value2 =analogRead(Volt_in);
V2_str = String(Volt_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,34,V2_Array);
int Echar_length= V2_str.length();
if (Volt_oldstringlength != Echar_length)
{
Volt_oldstringlength= Echar_length;
LCDPrintString(0,33," ");//clean some digit
}
Curr_value2 =analogRead(Current_in);
V2_str = String(Curr_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,34,V2_Array);
Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(1,33," ");//clean some digit
}
delay(300);
break;
}
}
}
//=============================================================
// Send Data or Command to LCD
//=============================================================
void LCDSendByte(char d,char RS)
{
char dH,dL,temp;
//Keep Data on upper nybble
dH = d & 0xF0; //Get MSB
dL = d & 0x0F;
dL = d << 4; //Get LSB
//Send MSB with E=clock
temp=0;
temp=dH | RS | 0x02; //MSB With RS+E bit
ShiftData(temp);
//Send MSB with E=0
temp=0;
temp=dH | RS; //MSB With RS bit
ShiftData(temp);
//Send LSB with E=clock
temp=0;
temp=dL | RS | 0x02; //MSB With RS+E bit
ShiftData(temp);
//Send LSB with E=0
temp=0;
temp=dL | RS; //MSB With RS bit
ShiftData(temp);
}
//=============================================
void ShiftData(char temp)
{
int i;
for(i=0;i<8;i++)
{
if((temp & 0x80)==0x80) //Send 1-bit to shift register
{digitalWrite(Data,HIGH);}
else
{digitalWrite(Data,LOW);}
digitalWrite(Clock,LOW);
digitalWrite(Clock,HIGH);
temp=temp<<1;
}
//Latch the data
digitalWrite(Latch,LOW);
delay(1);
digitalWrite(Latch,HIGH);
}
//=================================================================
// LCD Display Initialization Function
//=================================================================
void LCDinit()
{
int count;
char t[]={0x43,0x03,0x03,0x02,0x28,0x01,0x0C,0x06,0x02,0x02};
for (count = 0; count <= 9; count++)
{
LCDSendByte(t[count],0); //Command RS=0
}
}
//=================================================================
// Display Line on LCD at desired location Function
//=================================================================
void LCDPrint(char Line,char string[40])//--------------------------------------
{
int len,count;
if(Line==0) {
LCDSendByte(0x80,0); //Command RS=0 Move Cursor to Home
}
else {
LCDSendByte(0xC0,0); //Command RS=0 Move Cursor to Second Line LCDSendByte(0xC0,0);
}
len = strlen(string);
for (count=0;count<len;count++)
{
LCDSendByte(string[count],1); //Data RS=1
}
}
//=================================================================
void LCDclean(void)
{
LCDSendByte(0x01,0);
}
void LCDCurserMove(int y,int x)
{
// LCDSendByte((a*4+16),0);//a=1 shift right
if (y == 0)
{
LCDSendByte(0x80 + x,0);
}
else
{
LCDSendByte(0xC0 + x,0);
}
LCDSendByte(0x0b,0);
}
void LCDPrintString(int x,int y, char string[])
{
int count, len;
// summ = x;
if (x == 0)
{
LCDSendByte(0x80+y ,0);
}
else
{
LCDSendByte(0xC0+y,0);
}
len = strlen(string);
for (count=0;count<len;count++)
{
LCDSendByte(string[count],1); //Data RS=1
}
}
void LCDWriteChar(int x,int y,char Data)
{
if (x == 0)
{
LCDSendByte(0x80 + y,0);
}
else
{
LCDSendByte(0xC0 + y,0);
}
LCDSendByte(Data,1);
}
void LCDhome(void)
{
LCDSendByte(0x02,0);
}
void LCDDisp(void)
{
LCDSendByte(0x0f,0);
}
void PinA(){
cli(); //stop interrupts happening before we read pin values
reading = PIND & 0xC;
if(reading == B00001100 && aFlag) {
encoderPos --;
bFlag = 0;
aFlag = 0;
}
else if (reading == B00000100) bFlag = 1;
sei(); //restart interrupts
}
void PinB(){
cli(); //stop interrupts happening before we read pin values
reading = PIND & 0xC;
if (reading == B00001100 && bFlag) {
encoderPos ++;
bFlag = 0;
aFlag = 0;
}
else if (reading == B00001000) aFlag = 1;
sei(); //restart interrupts
}
void GetEncoder()//encode Position data from interrupt real time
{
if(oldEncPos != encoderPos)
{
Serial.println(encoderPos);
oldEncPos = encoderPos;
encoder_change_flag =true;
}
Echar = encoderPos;
}
//-------------------------------AD7840--------------------------------------
void AD7840driv(int ADPin,int temp)
{
Serial.print(" Analog out Data = ");
Serial.println(temp);
// digitalWrite(SDataPin,LOW);
digitalWrite(ADPin,LOW);
digitalWrite(SyncPin,LOW);
delay(1);
int i;
for(i=0;i<16;i++)
{
digitalWrite(ClockPin,HIGH);
// delay(1);
if((temp & 0x8000)==0x8000)
// {digitalWrite(SDataPin,HIGH);}
{digitalWrite(ADPin,HIGH);}
else
// {digitalWrite(SDataPin,LOW);}
{digitalWrite(ADPin,LOW);}
digitalWrite(ClockPin,LOW);
temp=temp<<1;
}
// digitalWrite(SDataPin,LOW);
digitalWrite(ADPin,LOW);
digitalWrite(SyncPin,HIGH);
delay(1);
digitalWrite(ClockPin,HIGH);
}
int Read_Encoder_SW(void)
{
if(!digitalRead(EncoderSW))//
{
delay(50);//50
if(!digitalRead(EncoderSW))
{
return 1;
flagread =true;
}
}
// Serial.println("return ");//important this have delay time
delay(150);//150
}

複製代碼

補充內容 (2019-3-11 12:10 AM):
已經解決!!

scottwang · 發表於 2019-3-10 17:06:00

目前你的線路裡的U3的CS/Serial為空接.

antlu · 發表於 2019-3-10 19:22:45

scottwang 發表於 2019-3-10 05:06 PM
目前你的線路裡的U3的CS/Serial為空接.

SCOTTWANG大:
線路漏畫到,實際上有接上!!

jjww163 · 發表於 2019-3-10 21:40:44

本文章最後由 jjww163 於 2019-3-10 10:02 PM 編輯

根據線路圖，clock 與 sync 是同時接到四個 DAC。
所以說在寫入資料到某一個 DAC 的時候，其他三個 DAC 也會有資料一起寫入，
不過你在 AD7840driv() 裡面卻只有設定其中一個 data, 漏了其他三個。

建議將原來 AD7840driv() 分成兩個，一個用來設定資料，儲存在 global variables 裡面準備輸出，
一個用來輸出，要 toggle clock 之前，要將四個 data pin 都設定好。
For example,

int adcData[4] = {0,0,0,0};
AD7840DataSet( pinNum, data) {
adcData[...] = data;
}
AD7840DataOut(void) {
for (...) {
if (adcData[0]...)
digitalWrite(SDataPin1, ...);
if (adcData[1]...)
digitalWrite(SDataPin2, ...);
if (adcData[2]...)
digitalWrite(SDataPin3, ...);
if (adcData[3]...)
digitalWrite(SDataPin4, ...);
// toggle clock
...
}
}

複製代碼

jojoling · 發表於 2019-3-10 22:49:31

本文章最後由 jojoling 於 2019-3-10 10:54 PM 編輯

你的電路4顆 dac是同時寫入的，所以需要改成一次寫入4顆。

AD7840driv( uint8_t nSelect,uint16_t Volt_value100) {
static uint16_t dac_out[4];
dac_out[nSelect] = Volt_value100;
for (i=0;i<16;i++) {
// assign AD pin 0 by dac_out[0]
// assign AD pin 1 by dac_out[1]
// assign AD pin 2 by dac_out[2]
// assign AD pin 3 by dac_out[3]
// clock pin high
// delay()
// clock pin low
}
}

複製代碼

antlu · 發表於 2019-3-10 23:35:34

jjww163 發表於 2019-3-10 09:40 PM
根據線路圖，clock 與 sync 是同時接到四個 DAC。
所以說在寫入資料到某一個 DAC 的時候，其他三個 DAC 也 ...

const int SyncPin=9;//AD7840
const int ClockPin=10;//AD7840
const int SDataPin=11;//AD7840
const int SDataPin2=12;//AD78402
兩組 data 的獨立接腳,我的方式是獨立送出,所以沒有送出的接腳就變成low 而導致輸出變為0.
感謝提出問題癥結

antlu · 發表於 2019-3-10 23:40:28

jojoling 發表於 2019-3-10 10:49 PM
你的電路4顆 dac是同時寫入的，所以需要改成一次寫入4顆。

感謝 JOJOLING(舅)大的提醒,我來想想該如何改程式!!

antlu · 發表於 2019-3-11 00:09:19

感謝大家的協助,已經完成了!! 程式如下:

//MERGE ENCODER AND LCM DISPLAY
static int pinA = 2; // Our first hardware interrupt pin is digital pin 2
static int pinB = 3; // Our second hardware interrupt pin is digital pin 3
volatile byte aFlag = 0;
volatile byte bFlag = 0;
volatile long encoderPos = 0;
volatile long oldEncPos = 0;
volatile byte reading = 0;
const int EncoderSW = 4;//Enter SW
//-------------upper is encoder ------------------------------
//Define 74HC595 Connections with arduio
const int Latch=5; //LCM
const int Data=6; //LCM
const int Clock=7; //LCM
const int OEnPin=8;//output enable OPA
const int SyncPin=9;//AD7840
const int ClockPin=10;//AD7840
const int SDataPin=11;//AD7840
const int SDataPin2=12;//AD78402
const byte Volt_in =A0;
const byte Current_in = A3;
// const int Led=13;//Led on off
void LCDinit(void);
void LCDSendByte(char d,char RS);
void LCDPrint(char Line,char string[40]);//------------------------------------
String msg;
boolean flagread = false;//rs232 updata
String msgdisplay;
char msgbuf[20];//rs232 read buffer
char Echar_Array[40];//char array 15 character ------------------------------
char msgdisplay_Array[40];//display setting data --------------------------------
char V2_Array[5];
int Echar_length;
int oldstringlength;
String Echar_str;
long Echar;
long SetData;//form rs232 PC
boolean flag1st = true;
int SWcount;
int Volt_value =0;
int Curr_value =0;
int Volt_value2 =0;
int Curr_value2 =0;
int old_Volt_value;
int old_Curr_value;
boolean encoder_change_flag = false;
boolean Encoder_flag = false;
int Menu_curs;
int Old_Menu_curs;
static int display_time_count =0;
int Level0 =0;
boolean init_flag = false;
boolean Display_flag;
int old_value;
int Volt_oldstringlength;
void setup() {
pinMode(pinA, INPUT_PULLUP); // set pinA as an input _PULLUP
pinMode(pinB, INPUT_PULLUP); // set pinB as an input _PULLUP
attachInterrupt(0,PinA,RISING); // set an interrupt on PinA
attachInterrupt(1,PinB,RISING); // set an interrupt on PinB
Serial.begin(38400); // start the serial monitor link
//-------------------------------- encoder --------------------------
pinMode(EncoderSW, INPUT_PULLUP);
//------------------------------^^^-- encoder --^^^----------------------------------
//-----------------vvv-LCM -vvv-----------------
pinMode(Data, OUTPUT);
pinMode(Clock, OUTPUT);
pinMode(Latch, OUTPUT);
//----------AD7840 ------------------
pinMode(ClockPin,OUTPUT);//AD7840
pinMode(SDataPin,OUTPUT);//AD7840
pinMode(SDataPin2,OUTPUT);//AD7840
pinMode(SyncPin,OUTPUT);//AD7840
pinMode(OEnPin,OUTPUT);//OPA Vss
// pinMode(Volt_in,INPUT);//analog input
// pinMode(Current_in,INPUT);//analog input
//------------output initial ------------
digitalWrite(OEnPin,HIGH);
digitalWrite(SyncPin,HIGH);
digitalWrite(ClockPin,HIGH);
LCDinit(); //initalize LCD in 4-bit mode
LCDPrint(0,"> Set Voltage Hello");
LCDPrint(1,"> Set Current start");
LCDPrintString(0,20,"> Voltage Out 2019");
LCDPrintString(1,20,"> Current Out Mar-10");
}
void loop() {
while (!digitalRead(EncoderSW))
while(1)
{
digitalWrite(OEnPin,LOW);
GetEncoder();
encoderPos = 0;
Menu_curs += Echar;
if(Old_Menu_curs != Menu_curs)
{
Old_Menu_curs = Menu_curs;
Display_flag = true;
}
if((Menu_curs >4) ||(Menu_curs <0) )
{
Menu_curs =0;
init_flag = true;
}
switch (Menu_curs)
{
case 0:
if(Display_flag)
{
LCDPrintString(0,0, "^ Set Voltage ");
LCDWriteChar(0,0,'^');
LCDWriteChar(1,0,'>');
LCDWriteChar(0,20,'>');
LCDWriteChar(1,20,'>');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(0,1,'>');
while(Level1)
{
GetEncoder();
Volt_value +=Echar;
encoderPos = 0;
if(Volt_value != old_value)
{
old_value = Volt_value;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Volt_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,14,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(0,13," ");//clean some digit
LCDPrintString(0,14,V2_Array);//------------------
}
Echar=0;
int Volt_value100 = Volt_value *231;
int Curr_value100 = Curr_value *232;
AD7840driv(SDataPin,Volt_value100,SDataPin2,Curr_value100);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(0,1,' ');
}
}
}
break;
case 1:
if(Display_flag)
{
LCDPrintString(1,0, "^ Set Current ");
LCDWriteChar(0,0,'>');
LCDWriteChar(1,0,'^');
LCDWriteChar(0,20,'>');
LCDWriteChar(1,20,'>');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(1,1,'>');
while(Level1)
{
GetEncoder();
Curr_value +=Echar;
encoderPos = 0;
if(Curr_value != old_value)
{
old_value = Curr_value;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Curr_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,14,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(1,13," ");//clean some digit
LCDPrintString(1,14,V2_Array);//------------------
}
Echar=0;
int Volt_value100 = Volt_value *231;
int Curr_value100 = Curr_value *232;
AD7840driv(SDataPin,Volt_value100,SDataPin2,Curr_value100);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(1,1,' ');
}
}
}
break;
case 2:
if(Display_flag)
{
LCDPrintString(0,20, "^ Voltage Out");
LCDWriteChar(0,0,'>');
LCDWriteChar(1,0,'>');
LCDWriteChar(0,20,'^');
LCDWriteChar(1,20,'>');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(0,21,'>');
while(Level1)
{
// GetEncoder();
Volt_value2 =analogRead(Volt_in);
// encoderPos = 0;
if(Volt_value2 != old_Volt_value)
{
old_Volt_value = Volt_value2;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Volt_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,34,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(0,33," ");//clean some digit
}
Echar=0;
// AD7840driv(SDataPin,Volt_value2);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(0,21,' ');
}
}
}
break;
case 3:
if(Display_flag)
{
LCDPrintString(1,20, "^ Current Out");
LCDWriteChar(0,0,'>');
LCDWriteChar(1,0,'>');
LCDWriteChar(0,20,'>');
LCDWriteChar(1,20,'^');
Display_flag = false;
}
Level0 = Read_Encoder_SW();//Read encoder sw to Level0
if(Level0 ==1)
{
boolean Level1=true;
LCDWriteChar(1,21,'>');
while(Level1)
{
// GetEncoder();
Curr_value2 =analogRead(Current_in);
// encoderPos = 0;
if(Curr_value2 != old_Curr_value)
{
old_Curr_value = Curr_value2;
boolean UpdateLCD_flag = true;
if(UpdateLCD_flag)
{
String V2_str = String(Curr_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,34,V2_Array);
int Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(1,33," ");//clean some digit
}
Echar=0;
// AD7840driv(SDataPin,Volt_value2);
UpdateLCD_flag = false;
}
}
int Level0level1= Read_Encoder_SW();
if (Level0level1 ==1)
{
Level0 =0;
Level1 = false;
LCDWriteChar(1,21,' ');
}
}
}
break;
case 4: //display screen purpose
if(Display_flag)
{
LCDclean();
LCDPrintString(0,0, "> Set Voltage");
LCDPrintString(1,0, "> Set Current");
LCDPrintString(0,20,"> Voltage Out");
LCDPrintString(1,20,"> Current Out");
LCDWriteChar(0,0,'*');
LCDWriteChar(1,0,'*');
LCDWriteChar(0,20,'*');
LCDWriteChar(1,20,'*');
Display_flag = false;
}
String V2_str = String(Volt_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,14,V2_Array);
V2_str = String(Curr_value);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,14,V2_Array);
Volt_value2 =analogRead(Volt_in);
V2_str = String(Volt_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(0,34,V2_Array);
int Echar_length= V2_str.length();
if (Volt_oldstringlength != Echar_length)
{
Volt_oldstringlength= Echar_length;
LCDPrintString(0,33," ");//clean some digit
}
Curr_value2 =analogRead(Current_in);
V2_str = String(Curr_value2);
V2_str.toCharArray(V2_Array,5);
LCDPrintString(1,34,V2_Array);
Echar_length= V2_str.length();
if (oldstringlength != Echar_length)
{
oldstringlength= Echar_length;
LCDPrintString(1,33," ");//clean some digit
}
delay(300);
break;
}
}
}
//=============================================================
// Send Data or Command to LCD
//=============================================================
void LCDSendByte(char d,char RS)
{
char dH,dL,temp;
//Keep Data on upper nybble
dH = d & 0xF0; //Get MSB
dL = d & 0x0F;
dL = d << 4; //Get LSB
//Send MSB with E=clock
temp=0;
temp=dH | RS | 0x02; //MSB With RS+E bit
ShiftData(temp);
//Send MSB with E=0
temp=0;
temp=dH | RS; //MSB With RS bit
ShiftData(temp);
//Send LSB with E=clock
temp=0;
temp=dL | RS | 0x02; //MSB With RS+E bit
ShiftData(temp);
//Send LSB with E=0
temp=0;
temp=dL | RS; //MSB With RS bit
ShiftData(temp);
}
//=============================================
void ShiftData(char temp)
{
int i;
for(i=0;i<8;i++)
{
if((temp & 0x80)==0x80) //Send 1-bit to shift register
{digitalWrite(Data,HIGH);}
else
{digitalWrite(Data,LOW);}
digitalWrite(Clock,LOW);
digitalWrite(Clock,HIGH);
temp=temp<<1;
}
//Latch the data
digitalWrite(Latch,LOW);
delay(1);
digitalWrite(Latch,HIGH);
}
//=================================================================
// LCD Display Initialization Function
//=================================================================
void LCDinit()
{
int count;
char t[]={0x43,0x03,0x03,0x02,0x28,0x01,0x0C,0x06,0x02,0x02};
for (count = 0; count <= 9; count++)
{
LCDSendByte(t[count],0); //Command RS=0
}
}
//=================================================================
// Display Line on LCD at desired location Function
//=================================================================
void LCDPrint(char Line,char string[40])//--------------------------------------
{
int len,count;
if(Line==0) {
LCDSendByte(0x80,0); //Command RS=0 Move Cursor to Home
}
else {
LCDSendByte(0xC0,0); //Command RS=0 Move Cursor to Second Line LCDSendByte(0xC0,0);
}
len = strlen(string);
for (count=0;count<len;count++)
{
LCDSendByte(string[count],1); //Data RS=1
}
}
//=================================================================
void LCDclean(void)
{
LCDSendByte(0x01,0);
}
void LCDCurserMove(int y,int x)
{
// LCDSendByte((a*4+16),0);//a=1 shift right
if (y == 0)
{
LCDSendByte(0x80 + x,0);
}
else
{
LCDSendByte(0xC0 + x,0);
}
LCDSendByte(0x0b,0);
}
void LCDPrintString(int x,int y, char string[])
{
int count, len;
// summ = x;
if (x == 0)
{
LCDSendByte(0x80+y ,0);
}
else
{
LCDSendByte(0xC0+y,0);
}
len = strlen(string);
for (count=0;count<len;count++)
{
LCDSendByte(string[count],1); //Data RS=1
}
}
void LCDWriteChar(int x,int y,char Data)
{
if (x == 0)
{
LCDSendByte(0x80 + y,0);
}
else
{
LCDSendByte(0xC0 + y,0);
}
LCDSendByte(Data,1);
}
void LCDhome(void)
{
LCDSendByte(0x02,0);
}
void LCDDisp(void)
{
LCDSendByte(0x0f,0);
}
void PinA(){
cli(); //stop interrupts happening before we read pin values
reading = PIND & 0xC;
if(reading == B00001100 && aFlag) {
encoderPos --;
bFlag = 0;
aFlag = 0;
}
else if (reading == B00000100) bFlag = 1;
sei(); //restart interrupts
}
void PinB(){
cli(); //stop interrupts happening before we read pin values
reading = PIND & 0xC;
if (reading == B00001100 && bFlag) {
encoderPos ++;
bFlag = 0;
aFlag = 0;
}
else if (reading == B00001000) aFlag = 1;
sei(); //restart interrupts
}
void GetEncoder()//encode Position data from interrupt real time
{
if(oldEncPos != encoderPos)
{
Serial.println(encoderPos);
oldEncPos = encoderPos;
encoder_change_flag =true;
}
Echar = encoderPos;
}
//-------------------------------AD7840--------------------------------------
void AD7840driv(int ADPin0,int tempV,int ADPin1,int tempC)//2019 03 10 V3
{
// digitalWrite(SDataPin,LOW);
digitalWrite(ADPin0,LOW);// 2 digital pin LOW
digitalWrite(ADPin1,LOW);
digitalWrite(SyncPin,LOW);
delay(1);
int i;
for(i=0;i<16;i++)
{
digitalWrite(ClockPin,HIGH);
// delay(1);
if((tempV & 0x8000)==0x8000)
{digitalWrite(ADPin0,HIGH);}
else
{digitalWrite(ADPin0,LOW);}
if((tempC & 0x8000)==0x8000)
{digitalWrite(ADPin1,HIGH);}
else
{digitalWrite(ADPin1,LOW);}
digitalWrite(ClockPin,LOW);
tempV=tempV<<1;
tempC=tempC<<1;
}
// digitalWrite(SDataPin,LOW);
digitalWrite(ADPin0,LOW);
digitalWrite(ADPin1,LOW);
digitalWrite(SyncPin,HIGH);
delay(1);
digitalWrite(ClockPin,HIGH);
}
int Read_Encoder_SW(void)
{
if(!digitalRead(EncoderSW))//
{
delay(50);//50
if(!digitalRead(EncoderSW))
{
return 1;
flagread =true;
}
}
// Serial.println("return ");//important this have delay time
delay(150);//150
}

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