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Hi again=) i have tried it also. I removed the resistor and just left 2.2v led on the pin p0.0. I have zipped the whole keil and proteus projects in a single folder. Can you again try them. I have to find where i am going wrond. I have a challange with myself. Ty Alex for your close interest and...
Alex hi, here is the c code for just to blink the led (p0.0) when button is pressed which triggers the EINT1 at p0.14 at falling-edge sensitivity.
#include <LPC213x.h>
void EINT1_IRQHandler(void) __irq
{
IOSET0=0x00000001; /* set p0.0 */
EXTINT = 0x02; /* clear EINT1 interrupt...
Yes, i have aware of the pin0.0 instead of pin0.1, i have tried your code as you have mentioned above with the right connections again as you have expressed but it does not work. I have checked if the elements are included into the simulation or not. I am gonna send the zip files both keil and...
Ty for the great effort Alex, eventhough all the attempts i am thinking that proteus makes me mad, i think programme may have a problem. I cannot find any error. For the simulation is there any alternate for simulation that you know? I am using Isis Design Suite sp 7.7. Also ty for your helpful...
Hi, if you started with lpc2xxx series, you may have a look into Hitex documents such as;
Or for a huge ARM core architectures, you can also go to Insider's Guides : Insiders Guides
And if you wish to have some examples done with lpc2xxx, you may also look into NXP examples such as...
Alex hi, i am trying to find the fault that i am doing but i cannot find it. May you please upload a project file such as blinky led with a button as an external interrupter. I am about to go mad for why it does not work. It will be very helpful if a proteus/isis file also added. It may help...
it is a realy good point Alex, you are right it is properly advantageous to use a variable thank you and this is the connection for external interrupt
current flowing through p0.14 is 0.12377 uA when any button in keypad is pressed (this is also the event where encoder output DA-data avaible is...
In my business, it is prohibited to load images, sorry Alex i forgot it, at home i will send the project files and images. Thanks for your all effort on this issue. Only text messages are allowed. Here is the "main.c".
---------- Post added at 15:09 ---------- Previous post was at 15:03...
Ty for the great effort Alex, your circuit is just like mine with the different values. When i use your resistor values, the current flowing through the pin is 0.113 uA when i push the button. The power is +5V. I am confused with the logic and get nervous=)
The load is pull-down resistor (10k) and the current is 0.123uA on the pin flowing. Could you please draw a simple circuit for just testing the external interrupt with a button, i am really nervous about by myself why i am not able to do it=)
I have a keypad encoder (MM74C922) in my circuit and output signal of keypad encoder is connected to p0.14 with a pull-down resistor (10k) to generate an interrupt event. The current flowing through the p0.14 when the output of encoder high, is -0.123 uA. May this lack of current cause that my...
Alex ty for the help but i guess that i am wrong with the pull-down resistor. I dont know what current should i apply to the p0.14 to operate. What value of resistor do you use for the eint function on p0.14? I actually havent found where i am doing wrong.
Hi Alex, thank you for your help but eventhough i clear the registers in the interrupt handler routine such as EXTINT = 2; and VICVectAddr = 0; My main problem is that i can not trigger the pin P0.14 i see that while debugging. The triggering signal for P0.14 is a 5V. If i use this 5v signal for...
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