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LPC-2148 Demo Code v1.30 now available   [2 Articles]

After almost a year of being slack, I have updated the LPC-2148 demo code package. Below are the changes (extracted from the README file). The latest version is available at ht...

Fastest ARM Flash MCU - LPC2900 series

NXP Semiconductors announces the fastest ARM Flash MCU series=20 NXP brings 125 MHz ARM968 Flash microcontroller to market Today NXP Semiconductors announced the availability...

Re: The board resets?   [3 Articles]

Motors are a terrible source of noise. Do you have an oscilloscope you can use to look at any of the lines going back to the board? Check your power supply, including the groun...

I2C protocol question   [14 Articles]

I'm interested in people's opinion on this. I am using a I2C Graphical Display interfaced with a LPC2148. On occasion, the I2C command sent out drops a byte which causes the co...

I2C problem   [3 Articles]

Hi everybody, I am trying to implement I2C bus in interrupt mode for LPC 2103. It clearly is not working. It is working perfectly well without the interrupt, ...

I2C (slave and master on board)   [22 Articles]

Hello, I want to test I2C and since I have no I2C device I used I2C0 and I2C1 of a same LPC2148 board. I2C0 is master transmitter, I2C1 is slave receiver. But I can't make it...

Re: Will my port suport 50uA

--- In l...@yahoogroups.com, "FreeRTOS.org Info" wrote: > I don't want to be a grump (but am), but have two suggestions: > > 1) Look it up in the manual. > 2) If you ...

Multiple master I2C problem   [2 Articles]

Hi everyone, I'm developping a multiple master I2C driver for an LPC2106. Everything works fine as long as no master tries to speak at the same time but when that occurs, no ...

Re: Several interrupts simultaneously requested   [2 Articles]

Hello, I don't know exactly what your Question is, but I assume that your System is not catching all Interrupts. Some questions: - Are you handling nested Interrupts? - Are y...

RE: LPC214X - some dead output pins?

Hi, > =A0P0-2=A0 and p03 also have problems like the above in the Controller IC= > . P0.2 and P0.3 are I2C pins and have no internal pullups. You require external pullups...

I2C Problem (Can't even send START signal)   [3 Articles]

I'm trying to get the I2C bus to work on an NXP LPC2103. I'm using Keil's Realview tools to compile. The LPC2103 is the master and there is only one slave, an NXP Port Expander...

ARM SBC   [4 Articles]

Hi, I'm new to ARM, but very experienced 8-bit programmer. I am looking for advice on which MCU and a cheap ( ...

Problem with 24LC16

Hi, I have a LPC2138 and I want to send and receive information from a I2C EEPR= OM, exactly it`s a 24LC16 chip. Please I need help. ______________________________________...

NXP LPC176x Cortex-M3 family.   [3 Articles]

NXP has posted a datasheet for the new Cortex-M3 family of MCU, the=20 LPC176x. These parts are pin-for-pin compatible with the LPC236x=20 series of ARM7 controllers.=20=20 K...

I2C slave on an LPC2101   [4 Articles]

Currently I am implementing an I2C slave interface on an LPC2101. The controller is connected to the I2C bus with two temperature sensors and an LPC2148 which is the I2C master. ...

RE: Pulling P0.2 or P0.3 high on LPC2148 only with a pull-up-resistor?

Hello. It is a feature, it is because I2C lines, even if you configure them as sim= ple IOPIN, only have sink transistors.=20 Cheers, =20 Daniel. To: l...@yahoogroups.comFr...

Re: Evaluation Boards (what about Olimex?)   [2 Articles]

I need to jump in and recommend another alternative here...=20=20 Don't forget the Olimex boards. These are usually the most feature rich for the price. Both boards below u...

RE: Absolute address assignment occupies more RAM memory

Help please!=20 =20 I need the routines for working with an I2C EEPROM 24LC16B. Mine doesn't wo= rk. =20 Thanks, =20 Laura To: l...@yahoogroups.comFrom: m...@terra.com.br...

RE: Re: USB Power LPC2368

Hello! Somebody has some routine (writting or reading) for I2C EPROOM with LPC2138? Laura To: t...@yahoo.com; l...@yahoogroups.comFrom: a...@yahoo.comDate: Sun, 29 Jun 2...

Reading data from the I2C bus

Hi I have written a function to read 4 bytes of data from an I2C which works well. However the function is specific to a given device, so I wrote a more generic function ba...

LPC2103 GPIO for 1-wire driver   [5 Articles]

Hi, I have got a quick hack C program working with a Dallas/Maxim DS18B20 1-wire temperature sensor and it works fine when the sensor is powered (pin 3 connected to 3.3V), but I...

analog input to i2c

hi there! I have some sensors all exporting analog ouputs. To be exaxt i have: 1 :: 3-axis accellerometer 3 :: Gyros 1 :: Compass and i want to output their values to I2...

SHT-71   [3 Articles]

Hi! Has anyone had experience with SHT-71/11 with arm? Is it necessery to use pins P0.2 P0.3 as (SCK ,DATA I2c configuration) ,becouse as i know this protocol is little difere...

Problem with I2C code

Hello guys.. I was trying to work with the i2c in LPC2468...fortunately it didnt turn out successfully.....could u jus help me out..... I really dont understand why my doesnt e...

Help needed about LPC2378 - 24LC512. I can read but I CAN NOT WRITE...   [2 Articles]

Hi all group members, My I2C routines to write and read data to/from 24LC512 are below. I call the write and read functions in the main: { PINSEL1 = 0x01400000; char tus=0x88...

Help needed about LPC2378 - 24LC512. I can read but I CAN NOT WRITE...

Hi all group members, My I2C routines to write and read data to/from 24LC512 are below. I call the write and read functions in the main: { PINSEL1 = 0x01400000; ...

Re: Help needed ...   [2 Articles]

--- In l...@yahoogroups.com, wrote: > > Hi, > > The main point here is that i decided to learn how to use > ARM microcontrollers. So i need a good > programmer/de...

Routine Eprom 24LC64   [4 Articles]

Hello, Have any one a example routine in C to use an i2c eprom tipe 24lc64? thanks ------------------------------------ ...

Re: Re: LPC2378 and 24LC512

Thank you all friends. My code is below here. I think there is a wrong thin= g at=20 ----------------------> I2C0CONCLR_bit.STAC =3D 1; I2C0CONCLR_bit.STAC =3D 1; ...

LPC2468 i2c bus in multi-master configuration   [3 Articles]

I'm using LPC2468 in a multi-master configuration. The other processor on the bus is a different one (Cypress). According to user manual, when you send a START bit, "if the bus i...

Re: New LPC3200 ARM926 MCUs with Ethernet, LCD, USB   [3 Articles]

At last! An ARM controller with all of the peripherals I need (with the possible exception of CAN). For the last 18 months I have been in search of the holy grail when it comes t...

Re: LPC2300 FGPIO, PU/PD and power consumption   [3 Articles]

If the pins are GPIO output, why would you want pull-up or pull-down at all? The lowest power option you could achieve by pulling in the same direction as you are driving will b...

Re: initializing I2C problem

Hi, I'm facing the same problem here. My code stop at "while (I2STAT != 0x08); I've search through the forum but no one seems to give a solution to this problem. Anyone fou...

I2C Start Problem   [5 Articles]

Hi, I am having problem with I2C start signal. After i set the STA bit in I2CONSET, i wait for SI to be set. But it seems that SI flag is never set. Also, i measure the signal...

Re: Re: I2C Start Problem

No worries, I'm glad you have a solution :) g_gambler2000 wrote: > > Hi, > > I have solve my I2C problem. The problem was mainly due to wrong > initialization of 'devi...

Re: I2C Start Problem

Hi Paul, Just to clarify the misunderstanding here. 1) I check for 0x08 in I2STAT. 0x08 is not SI bit. It is a status to indicate that Start condition has been transmitted. ...

Re: Re: I2C Start Problem

That's odd! I'd say the problem with your latest piece of code was using CONSTAT instead as CONSET to check for SI as you did in your first code example. CONSTAT doesn't have a...

Re: I2C Start Problem   [3 Articles]

If you don't even get the START condition working, check the following things: (1) H/W: SCL to SCL, SDA to SDA between the master and slave, sounds simple, I know I am not the...

Re: LPCUSB hid code randomly hangs on LPC2378.

I am working on a HID project for the LPC2378 and I am having a strange issue. I used the main_hid.c as a base to work from, and I am having an issue with it. After running f...

Re: I2C, un-ACKED address   [2 Articles]

Have you checked to make sure that the I2C clock is within spec of the device? What do you have the clock control registers set to, and what is your peripheral clock speed? Hav...