关于12864显示分级菜单求助
我用12864做一个有多级菜单，能实时显示温度值的东西，我用按键翻页，当按下按键时显示的温度值只是按按键那一时刻的，不会随时变化，我该怎么办才能让它变化，还能按其他键回到下一级菜单，真的很急，请路过的各位能指点一下，不胜感激。有代码会比较容易看。
本帖最后由 Ricky 于 2013-5-25 12:27 编辑
#include "dht11.h"
#include "LCD12864RSPI.h"
#define DHT11_PIN1 1
#define DHT11_PIN2 2
#define DHT11_PIN3 3
#define DHT11_PIN4 4
#define AR_SIZE( a ) sizeof( a ) / sizeof( a )
unsigned char wendu1[]=" T1:";
unsigned char wendu2[]=" T2:";
unsigned char wendu3[]=" T3:";
unsigned char wendu4[]=" T4:";
unsigned char shidu1[]=" H1:";
unsigned char shidu2[]=" H2:";
unsigned char shidu3[]=" H3:";
unsigned char shidu4[]=" H4:";
unsigned char du[]={0xA1, 0xE6};
unsigned char h[]=" %";
byte dht11_dat;
int key=-1,oldkey=-1, NUM_KEYS = 5,adc_key_in,now;
int adc_key_val ={50, 200, 400, 600, 800 };
char dha1,dha2,dhb1,dhb2,dhc1,dhc2,dhd1,dhd2;
double ma1=0,ma2=0,mb1=0,mb2=0,mc1=0,mc2=0,md1=0,md2=0;
void setup()
{
Serial.begin(9600);
LCDA.Initialise(); //INIT SCREEN
delay(100);
initDHT( DHT11_PIN1 );
initDHT( DHT11_PIN2 );
initDHT( DHT11_PIN3 );
initDHT( DHT11_PIN4 );
}
void initDHT( int nPinID )
{
DDRC |= _BV(nPinID);
PORTC |= _BV(nPinID);
}
byte reading_dht11_dat( int nPinID )
{
byte i = 0;
byte result=0;
for(i=0; i< 8; i++){
while(!(PINC & _BV(nPinID)));// wait for 50us
delayMicroseconds(30);
if(PINC & _BV(nPinID))
result |=(1<<(7-i));
while((PINC & _BV(nPinID)));// wait '1' finish
}
return result;
}
bool Read_Data_From_PIN(int nPinID, byte dht11_dat[] )
{
byte dht11_in;
byte i;
// start condition
// 1. pull-down i/o pin from 18ms
PORTC &= ~_BV(nPinID);
delay(18);
PORTC |= _BV(nPinID);
delayMicroseconds(40);
DDRC &= ~_BV(nPinID);
delayMicroseconds(40);
dht11_in = PINC & _BV(nPinID);
if(dht11_in){
Serial.println("dht11 start condition 1 not met");
return false;
}
delayMicroseconds(80);
dht11_in = PINC & _BV(nPinID);
if(!dht11_in){
Serial.println("dht11 start condition 2 not met");
return false;
}
delayMicroseconds(80);
// now ready for data reception
for (i=0; i<5; i++)
dht11_dat = reading_dht11_dat( nPinID );
DDRC |= _BV(nPinID);
PORTC |= _BV(nPinID);
byte dht11_check_sum = dht11_dat+dht11_dat+dht11_dat+dht11_dat;
// check check_sum
if(dht11_dat!= dht11_check_sum)
{
Serial.println("dht11 checksum error");
return false;
}
return true;
}
void print_Data(int nPinID, byte dht11_dat[] )
{switch(nPinID)
{
case DHT11_PIN1:
ma1=dht11_dat+dht11_dat;
ma2=dht11_dat+dht11_dat;
dtostrf(ma1,3,1,dha1);
dtostrf(ma2,3,1,dha2);
LCDA.DisplayString(0,1,shidu1,AR_SIZE(shidu1));
LCDA.DisplayString(0,3,(unsigned char *)dha1,AR_SIZE(dha1));
LCDA.DisplayString(0,5,h,AR_SIZE(h));
LCDA.DisplayString(1,1,wendu1,AR_SIZE(wendu1));
LCDA.DisplayString(1,3,(unsigned char *)dha2,AR_SIZE(dha2));
LCDA.DisplayString(1,5,du,AR_SIZE(du));
break;
case DHT11_PIN2:
mb1=dht11_dat+dht11_dat;
mb2=dht11_dat+dht11_dat;
dtostrf(mb1,3,1,dhb1);
dtostrf(mb2,3,1,dhb2);
LCDA.DisplayString(2,1,shidu2,AR_SIZE(shidu2));
LCDA.DisplayString(2,3,(unsigned char *)dhb1,AR_SIZE(dhb1));
LCDA.DisplayString(2,5,h,AR_SIZE(h));
LCDA.DisplayString(3,1,wendu2,AR_SIZE(wendu2));
LCDA.DisplayString(3,3,(unsigned char *)dhb2,AR_SIZE(dhb2));
LCDA.DisplayString(3,5,du,AR_SIZE(du));
break;
case DHT11_PIN3:
mc1=dht11_dat+dht11_dat;
mc2=dht11_dat+dht11_dat;
dtostrf(mc1,3,1,dhc1);
dtostrf(mc2,3,1,dhc2);
LCDA.DisplayString(0,1,shidu3,AR_SIZE(shidu3));
LCDA.DisplayString(0,3,(unsigned char *)dhc1,AR_SIZE(dhc1));
LCDA.DisplayString(0,5,h,AR_SIZE(h));
LCDA.DisplayString(1,1,wendu3,AR_SIZE(wendu3));
LCDA.DisplayString(1,3,(unsigned char *)dhc2,AR_SIZE(dhc2));
LCDA.DisplayString(1,5,du,AR_SIZE(du));
break;
case DHT11_PIN4:
md1=dht11_dat+dht11_dat;
md2=dht11_dat+dht11_dat;
dtostrf(md1,3,1,dhd1);
dtostrf(md2,3,1,dhd2);
LCDA.DisplayString(2,1,shidu4,AR_SIZE(shidu4));
LCDA.DisplayString(2,3,(unsigned char *)dhd1,AR_SIZE(dhd1));
LCDA.DisplayString(2,5,h,AR_SIZE(h));
LCDA.DisplayString(3,1,wendu4,AR_SIZE(wendu4));
LCDA.DisplayString(3,3,(unsigned char *)dhd2,AR_SIZE(dhd2));
LCDA.DisplayString(3,5,du,AR_SIZE(du));
break;
}
delay(1000);
}
voidxianshi1()
{
if( Read_Data_From_PIN( DHT11_PIN1, dht11_dat ) )
{
print_Data( DHT11_PIN1, dht11_dat );
}
if( Read_Data_From_PIN( DHT11_PIN2, dht11_dat ) )
{
print_Data( DHT11_PIN2, dht11_dat );
}
}
void xianshi2()
{
if( Read_Data_From_PIN( DHT11_PIN3, dht11_dat ) )
{
print_Data( DHT11_PIN3, dht11_dat );
}
if( Read_Data_From_PIN( DHT11_PIN4, dht11_dat ) )
{
print_Data( DHT11_PIN4, dht11_dat );
}
}
int get_key(unsigned int input)
{
int k;
for (k = 0; k < NUM_KEYS; k++)
{
if (input < adc_key_val)
{
return k;
}
}
if (k >= NUM_KEYS)k = -1;// No valid key pressed
return k;
}
void loop()
{
adc_key_in = analogRead(5);
key = get_key(adc_key_in);
if(key!=oldkey)
{
delay(50);
adc_key_in = analogRead(5);
key = get_key(adc_key_in);
if(key!=oldkey)
{
oldkey=key;
if(key>=0)
{
switch(key)
{
case 0:
{
LCDA.CLEAR();
xianshi1();
break;
}
case 1:
{
LCDA.CLEAR();
xianshi2();
break;
}
}
}
}
}
}
同问同问 版主，显示屏和arduino的接线该怎么接啊，能不能发一下接线图。
页:
[1]