lpc2148 code not executing

[jayanthyk192]

Hi,

I starting to work with LPC2148 MCU. I bought a daughter board with the IC in it. It has the crystal connected, Vss and Vdd supplied with proper voltages. I added a 12k to reset and pulled it up. I used a 12k at PO.14 and pulled it up. I'm able to burn the flash, but the code is not running. Another problem is that, when i pull the PO.14 to gnd, even without resetting, the bootloader is enabled. then after burning flash the reset works but code doesnt. I have left all JTAG pins as it is, not pulled up or down. I even added a capacitor at reset but no change. Please help me solve the problem. I had a similar problem with LPC2106 because of clock problem. But i tried changing it and it still doesn't work

Thank you

 

[milan.rajik]

Post the code.

 

[jayanthyk192]

Post the code.

this is the code:

#include<lpc21XX.h>

int main()
{

 IODIR0 = 0XFFFFFFFF;
 IODIR1 = 0XFFFFFFFF;

	
while(1)
{	
 IOSET1 = 0XFFFFFFFF;
 IOSET0 = 0XFFFFFFFF;
 IOCLR1 = 0XFFFFFFFF;
 IOCLR0 = 0XFFFFFFFF;
}	
}

 

[milan.rajik]

Try this.

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Code C - [expand]
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#include<lpc21XX.h>
 
int main()
{
 
 IODIR0 = 0X4000; //P0.14 as output
 IODIR1 = 0X0001; //P1.0 as output
 
    
while(1)
{   
 IOSET1 = 0X0001;
 IOSET0 = 0X4000;
 
 //add delay of min 500 ms here
 
 IOCLR1 = 0X0001;
 IOCLR0 = 0X4000;
}   
}

---

 

[jayanthyk192]

Try this.

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Code C - [expand]
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#include<lpc21XX.h>
 
int main()
{
 
 IODIR0 = 0X4000; //P0.14 as output
 IODIR1 = 0X0001; //P1.0 as output
 
    
while(1)
{   
 IOSET1 = 0X0001;
 IOSET0 = 0X4000;
 
 //add delay of min 500 ms here
 
 IOCLR1 = 0X0001;
 IOCLR0 = 0X4000;
}   
}

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I burnt the microcontroller :sad:. I was trying to reconnect wires and i let one of the pins touch a 5V rail. I ended up burning the microcontroller. I'll get back if there are any problems in the new one i"m buying today.