port problem

Started by anonymous_love27 in LPC200011 years ago 3 replies

Hi all, This is a very funny problem but I am not being able to correct it. The GPIO port P0.18 in LPC 2103 is not giving a logic high even...

Hi all, This is a very funny problem but I am not being able to correct it. The GPIO port P0.18 in LPC 2103 is not giving a logic high even when I set it using both as FIO and GPIO. I have set to be a GPIO port. I dont know what the problem is. Hope some body can give me any suggestions. Bye


about Clock of GPIO of LPC2378

Started by sukhdeep singh in LPC200010 years ago 2 replies

from where can i know,at what speed slow and fast GPIO is operating. what is the difference between slow and fast GPIO. Connect with...

from where can i know,at what speed slow and fast GPIO is operating. what is the difference between slow and fast GPIO. Connect with friends all over the world. Get Yahoo! India Messenger at http://in.messenger.yahoo.com/?wm=n/ ------------------------------------


Problem about GPIO of P0.2 and P0.3 of LPC2119

Started by saidaiy in LPC200012 years ago 4 replies

Why i cannot use both P0.2 and P0.3 as the GPIO, are there any special setting for those two pin ?

Why i cannot use both P0.2 and P0.3 as the GPIO, are there any special setting for those two pin ?


Loading data serially on a GPIO pin.

Started by Dhinesh in LPC20008 years ago 12 replies

Hello; I am new to ARM. i am using LPC2119 development board. i need to send a array of hexadecimal value serially to a GPIO. in simpler way is...

Hello; I am new to ARM. i am using LPC2119 development board. i need to send a array of hexadecimal value serially to a GPIO. in simpler way is i need to interface 74hc595 shift register to ARM. i dont want to interface with SPI, i need to do it manually using GPIO. I did some programming but it shows error. I use Keil uvision, realview compiler. Here the program. #include #de


about GPIO interrupt.

Started by sukh...@yahoo.co.in in LPC20009 years ago 4 replies

Today when i am reading the user manual of LPC23xx for LPC2378. i have found that we can generate interrupt on GPIO 0 and 2 ports. But i have not...

Today when i am reading the user manual of LPC23xx for LPC2378. i have found that we can generate interrupt on GPIO 0 and 2 ports. But i have not found any VICVectAddr crossponding to port interrupt. then how can i generate interrupt by GPIO. here i am not talking about external interrupt like EINT0,EINT1,EINT2,EINT3. kindly tell me. Thanks Looking for local information? Find it on Ya...


GPIO Port 0 bug?

Started by "h.belig" in LPC200010 years ago 4 replies

Hello, the problem seems to be simple, nevertheless I could not solve it: I want to output a word to PORT 0. This is the...

Hello, the problem seems to be simple, nevertheless I could not solve it: I want to output a word to PORT 0. This is the initialisation: PINSEL0 = 0; // P0[15]..[0] as GPIO (default) PINMODE0 = 0; // with pull-up resistor (default) PINSEL1 = 0; // P0[31]..[16] as GPIO (default) PINMODE1 = 0; // with pull-up resistor (...


GPIO output voltage

Started by vineet jain in LPC200013 years ago 3 replies

Hello, Can I connect any TTL chip working at 5V to the LPC2104 GPIO's??? Regards, Vineet. ...

Hello, Can I connect any TTL chip working at 5V to the LPC2104 GPIO's??? Regards, Vineet. __________________________________________________ "> http://mail.yahoo.com


Emulating SPI interface on GPIO

Started by majess in LPC200012 years ago 1 reply

Hello all, I've got an odd and unusual problem. Unfortunately I'm not able to use SPI0 and SSP serial SPI interfaces on my LPC2131's...

Hello all, I've got an odd and unusual problem. Unfortunately I'm not able to use SPI0 and SSP serial SPI interfaces on my LPC2131's evaluation board. Instead of this I've got some unused GPIO pins. I'm curious if I can use that free GPIO pins to emulate software SPI interface, like it is possible with I2C?? Also I'd like to ask group members if any of them had a similar problem a...


LPC2148 PORT1 GPIO yet?, is there a new LPC2148.h?

Started by stephan2148 in LPC200012 years ago 2 replies

Hi, I have been through searching about how to use PORT1 on the LPC2148 for GPIO, but does anyone know if there are any updates to...

Hi, I have been through searching about how to use PORT1 on the LPC2148 for GPIO, but does anyone know if there are any updates to the LPC2148.h file to include it's registers? I would like to bit address that PORT as GPIO just like it is done for PORT0. I am a bit hesitant to do a full update of the IAR Rev midproject and would rather just add or replace my .h file, as it usually causes me...


GPIO read gives wrong value in 17xx

Started by prab...@yahoo.co.in in LPC20009 years ago 13 replies

hi all, Is any one facing following Issue? I have set some gpios(leds).LEDs are on.But if i read that gpio value means it gives value...

hi all, Is any one facing following Issue? I have set some gpios(leds).LEDs are on.But if i read that gpio value means it gives value 1.I have set 15th bit of PCONP also.So i am suspecting gpio reads(FIOPIN register)???i am using lpc17xx.h from FreeRTOSdemo code. any idea about what wrong in this issue??? Thank ------------------------------------


Pullup Simulation with Keil

Started by karlmarxberlin in LPC20008 years ago 1 reply

Hi all, For an LPC2132 application I required a third I2C bus and implemented this using bit banging of GPIO pins. A logical 0 is implemented...

Hi all, For an LPC2132 application I required a third I2C bus and implemented this using bit banging of GPIO pins. A logical 0 is implemented by driving the GPIO pin to low, a logical 1 is implemented by setting the GPIO to input and having an external resistor pulling the signal high. This works perfectly in real hardware. As I generally simulate my software with Keil uVision, I have the p...


How to find if LPC2214 is 00 or 01

Started by "parretti.francesco" in LPC20009 years ago 8 replies

Hi! I'm a newbie, so sorry if I post a stupid question. This is my problem: I'have to work on a board with LPC2214 I try to run a simple code...

Hi! I'm a newbie, so sorry if I post a stupid question. This is my problem: I'have to work on a board with LPC2214 I try to run a simple code (like LED blinking) for fast GPIO PORT0 , but nothing happens, otherwise with standard GPIO PORT0 it works correctly. My trouble is that ARM is LPC2214/00 (without FAST GPIO) and not LPC2214/01. Using keil ULINK2 can I detect the type of ARM??? Thx --...


LPC2364 GPIO Interrupt Problem

Started by grady_sean in LPC200010 years ago 3 replies

Hello all, I am trying to use a falling edge GPIO interrupt on P0.11. I setup the pin as an input and have tested it as such and it seems...

Hello all, I am trying to use a falling edge GPIO interrupt on P0.11. I setup the pin as an input and have tested it as such and it seems to work fine. PINSEL0 &= 0xFF3FFFFF; PINMODE0 &= 0xFFBFFFFF; // Set the pins to be GPIO inputs. FIO0DIR1 &= 0xF7; // 11110111 I also setup the IO0_INT_EN_F to enable the falling edge interrupt. IO0_INT_EN_F &= 0x800; Also then ...


LPC2138 GPIO

Started by dimed77 in LPC200013 years ago 8 replies

Hi, Does the LPC2138 P0.10 pin have special electrical specs.? When configured as GPIO, it goes to only 2V when in logic '1' output,...

Hi, Does the LPC2138 P0.10 pin have special electrical specs.? When configured as GPIO, it goes to only 2V when in logic '1' output, no load. Tried with 2 different chips already. Could someone give me a hint? Thanks :) Di


GPIO Current Drives

Started by javida13 in LPC200013 years ago 2 replies

What is the current drive capability on the pins when configured to GPIO outputs? Barry

What is the current drive capability on the pins when configured to GPIO outputs? Barry


Delay Due to LPC2119 GPIO response

Started by rva2001me in LPC200010 years ago

Hello readers, I have connected the LPC2119 GPIO to PC paralel port. I could able to send message (10 bytes) to LPC2119 in 0.2 msec. But...

Hello readers, I have connected the LPC2119 GPIO to PC paralel port. I could able to send message (10 bytes) to LPC2119 in 0.2 msec. But after sometime means after sending 13 to 15 to messages, time needed to send the message from Paralel port to GPIO is may be 5/10/20/30/40 secs. But the next immediate message I could able to send in 0.2 milisecond only. Once again may be 28...


lpc2106 GPIO

Started by hemanandharamesh in LPC20009 years ago 1 reply

Hi, i need to know whether all gpio pins in lpc2106 have 5v tolerance level? can any one help me wit this? thanks in advance......

Hi, i need to know whether all gpio pins in lpc2106 have 5v tolerance level? can any one help me wit this? thanks in advance... Regards P.Hemanandharamesh ------------------------------------


TD1(pin 22) on LPC2292/LPC2294 as GPIO

Started by Boris Kralik in LPC200013 years ago 9 replies

Hi. I want to use TD1 pin on LPC2292/LPC2294 as output, but in manual is not ports to GPIO. Is possible to use TD1 as GPIO ? If yes, how it...

Hi. I want to use TD1 pin on LPC2292/LPC2294 as output, but in manual is not ports to GPIO. Is possible to use TD1 as GPIO ? If yes, how it make it ? Thx.


Simple GPIO not working in Port2

Started by egazzi in LPC200010 years ago

I'm having a hard time trying to use Port 2 as GPIO in LPC2378. My program works fine the other ports 1, 3 and 4, but when I change it to Port 2...

I'm having a hard time trying to use Port 2 as GPIO in LPC2378. My program works fine the other ports 1, 3 and 4, but when I change it to Port 2 it just doesn't work. Do I need to configure any other registers that I'm forgetting? thanks for the help! ------------------------------------


Reg: Weired PCONP Reg Issues in LPC1764,FreeRTOS

Started by prab...@yahoo.co.in in LPC20009 years ago 5 replies

Hi all, I am using lpc1764 with FreeRTOS.I am using LPC17xx.h file from FreeRTOS Demo code(1768,redsuite).After Power up,i have read PCONP...

Hi all, I am using lpc1764 with FreeRTOS.I am using LPC17xx.h file from FreeRTOS Demo code(1768,redsuite).After Power up,i have read PCONP and its value is 0xe.but as per user guide reset value is 0x03BE.Any ideas.????? GPIO's functionalities not working properly.Which means Couldn't set GPIO pins(cofigure as GPIO,output and set to high).It shows always zeros.any idea??? In FreeRTOS dem...