 |
 |
| View previous topic :: View next topic |
| Author |
Message |
on7nh
Joined: 05 Jun 2006
Posts: 41
Location: Belgium
|
| troubles with GLCD display |
 Posted: Sun Nov 22, 2009 10:15 am |
 |
|
hello folks,
I have some trouble with a glcd, HQM1286404.
I am using this with the HDM64GS12.c driver.
All is running ok, but for some strange reason, the display switches after
some time to 1/2 and I can do nothing else than a displayinit(;) to become a normal display.
Resetting the display_unit is possible, but then I have a flickering display.
Any suggestions?
| Code: |
#include <18F452.h>
#fuses HS,WDT,NOLVP
#use delay(clock=1600000)
#use i2c(SLAVE, SDA=PIN_C4, SCL=PIN_C3, address=0xa0,SLOW)
#include <HDM64GS12.c>
#include <graphics.c>
#include <math.h>
//////////////////////////////////////////////////////////
// global variables
//////////////////////////////////////////////////////////
BYTE address, buffer[0x10];
char TextSpanning[] = "Spanning :";
char TextStroom[]= "Stroom :";
char Textvermogen[]= "P : ";
char TextFrequentie[]= "Hz : ";
unsigned int16 measU;
unsigned int16 bargraph;
unsigned int16 measI;
unsigned int32 measPower;
unsigned int16 Power;
unsigned int32 Freq;
unsigned int16 runstatus;
char lcddata[20];
int32 count,tel;
int16 keyw;
void Prnt_display();
BYTE incoming, state;
BYTE B1, B2, B3, B4;
////////////////////////////////////////////////////////////////////////////////
//******************************************************
#int_rtcc
void clock_isr()
{
//disable_interrupts(GLOBAL);
if (tel < 10)
tel++;
else
{
tel = 0;
Prnt_display();
// enable_interrupts(GLOBAL);
}
}
////////////////////////////////////////////////////////////////////////////////
#INT_SSP
void ssp_interupt ()
{
state = i2c_isr_state();
if(state <= 0x80) //Master is sending data
{
incoming = i2c_read();
if(state == 3)
keyw = incoming;
if(state == 1)
b1 = incoming;
if(state == 2)
b2 = incoming;
if(keyw == 101)
{
//tempvar = make16(b2,b1);
power = make16(b2,b1);
keyw = 0;
}
if(keyw == 102)
{
MeasU = make16(b2,b1);
keyw = 0;
}
if(keyw == 103)
{
MeasI = make16(b2,b1);
keyw = 0;
}
if(keyw == 104)
{
Freq = make16(b2,b1);
keyw = 0;
}
if(keyw == 105)
{
bargraph = make16(b2,b1);
keyw = 0;
}
if(keyw == 106)
{
runstatus = make16(b2,b1);
keyw = 0;
}
if(keyw == 111)
{
// D_CY = tempvar;
keyw = 0;
}
if(keyw == 111)
{
// D_CY = tempvar;
keyw = 0;
}
}
if(state == 0x80) //Master is requesting data
{
i2c_write(buffer[address]);
}
// Prnt_display();
}
///////////////////////////////////////////////////////////////////////////////
void Prnt_display()
{
// glcd_init(ON);
glcd_rect(0, 0, 127, 63, NO, ON); // Outline the display
glcd_text57(3, 2, TextSpanning, 1, ON); // Display "gemeten Spanning"
glcd_text57(3, 12, TextStroom, 1, ON); // Display "gemeten stroom"
glcd_text57(3, 22, TextVermogen, 1, ON); // Display "ingesteld vermogen"
glcd_text57(3, 32, TextFrequentie, 1, ON); // Display "Ingestelde Frequentie"
// Zet gemeten spanning op display
sprintf(lcddata,"%lu",MeasU);
glcd_rect(65, 2, 126, 8, YES,OFF); // oude waarde wissen
glcd_text57(65,2,lcddata,1,on);
// Zet gemeten stroom op display
sprintf(lcddata,"%lu",measI);
glcd_rect(65, 12, 126, 18, YES,OFF); // oude waarde wissen
glcd_text57(65,12,lcddata,1,on);
// Zet ingesteld vermogen op display
sprintf(lcddata,"%lu",power);
glcd_rect(45, 22, 79, 28, YES, OFF); // oude waarde wissen
glcd_text57(45,22,lcddata,1,on);
// Zet berekend vermogen op display
measpower = measU * (measI/1000.0);
sprintf(lcddata,"%lu²²²",measPower);
glcd_rect(80, 22, 126, 28, YES, OFF); // oude waarde wissen
glcd_text57(80,22,lcddata,1,on);
sprintf(lcddata,"%lu",freq*10);
glcd_rect(45, 32, 126, 38, YES, OFF); // oude waarde wissen
glcd_text57(45,32,lcddata,1,on);
// sprintf(lcddata,"%lu",keyw);
// glcd_rect(45, 42, 126, 48, YES, OFF); // oude waarde wissen
// glcd_text57(45,42,lcddata,1,on);
if (runstatus != 1)
{
glcd_rect(1, 52, 126, 58, YES, ON); // oude waarde wissen
}
else
{
// waarde mag varieren tussen 1 en 81
glcd_rect(1, 52, 126, 58, YES, OFF); // oude waarde wissen
glcd_rect(1, 52, 126, 58, NO, ON); // oude waarde wissen
glcd_line(63,52,63,58,ON);
glcd_line((1+(bargraph/33)),52,(1+(bargraph/33)),58,ON);
}
}
////////////////////////////////////////////////////////////////////////////////
void main()
{
set_tris_a(0b11000001);
// setup_wdt(WDT_72MS);
setup_counters(RTCC_internal,Rtcc_div_32 | Rtcc_8_bit);
enable_interrupts(INT_RTCC);
enable_interrupts(INT_SSP);
enable_interrupts(GLOBAL);
glcd_init(ON); // Must initialize the LCD
while (TRUE)
{
// Prnt_display();
delay_ms(200);
count++;
if (count > 10)
{
count = 0;
// glcd_init(ON); // Must initialize the LCD
}
restart_wdt();//at least one in the main while(1) loop
} //end while(true)
} //end void(main)
|
|
|
 |
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Sun Nov 22, 2009 10:23 am |
|
|
| Quote: |
#include <18F452.h>
#fuses HS,WDT,NOLVP
#use delay(clock=1600000)
|
Look closely at your specified frequency. Does it match your crystal ? |
|
|
Guest
|
|
| Posted: Sun Nov 22, 2009 10:42 am |
|
|
Oops... i will test this ...  |
|
|
Guest
|
|
| Posted: Sun Nov 22, 2009 10:50 am |
|
|
I did change the freq... this was wrong,
now I see still flickering in the display.. it seems that wdt is working.
After changing WDT into NOWDT, the cpu hangs....
Maybe is this the problem i am struggling. |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Sun Nov 22, 2009 1:44 pm |
|
|
Have you tested your LCD code and your i2c slave code separately ?
Make them work correctly as separate programs and then combine them. |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
