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No SPI Transfer Complete in Slave Mode   [3 Articles]

We are attempting to interface to an audio grade 24-bit ADC (CS5344). We are using SPI0 on an LPC2148 in slave mode, the ADC is the master. We have verified that the incoming S...

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: Reading SoftPot with AD   [2 Articles]

Richard: Thanks for the link to the demo code. It's a great resource to pick=20 apart and see how things work on the 214x. Having looked at the ADC=20 example of the site, I...

Surface Mount Navigation Switch (Sparkfun COM-08236)   [2 Articles]

I was wondering if anyone has used this product, or can offer a few lines of code to point me in the right direction? I am just learning ARM7 development, and can get the LEDs...

CAN: only recieves first message - lpc2129

I am trying to be able to use CAN but having some problems with the basic. Hoping some one can help. I have two MCB2100 board from keil with lpc2129 on them. I am using the LPC_...

power down input protection for LPC213x ADC

Hi Folks – I have a question about power down input protection for the ADC circuit for the LPC213x processors - does the LPC213x have a JFET or similar protection for the input...

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...

LPC2148 Help Needed

Hi, I am a undergrad student working on a class project to get data from external adc to pc via usb using lpc2148. I have studied lpc2148 . but I need a detail procedure how to...

Problem with ADC   [4 Articles]

Hi i am using lpc2368,with ADS v1.2 ,i am facing problem with A to D conversions.i get the right values in ADC for given analog input if i use VREF 3.3v ,as soon as i change r...

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: Re: 3 phase AC drive using LPC2136

dear Mukund Deshmukh, But you would be using a resource to understand the algorithm and and to implement it. I was asking abt that so that i could clarify some of my doubts wit...

Re: Re: 3 phase AC drive using LPC2136

No, I am not using PIC reference, but developing my own. Warm Regards, Mukund Deshmukh, Beta Computronics Pvt Ltd. 10/1 IT Park, Parsodi, Nagpur -440022 India. Web site - h...

Re: Re: 3 phase AC drive using LPC2136

hello Mukund Deshmukh, I had some doubts in the caculation part of the algorithm. Can i know which application datasheet have you been using for you code development. I've be...

Re: Re: 3 phase AC drive using LPC2136

I have decided to use LPC938 and not LPC2136, because of PCB space and cost. Warm Regards, Mukund Deshmukh, Beta Computronics Pvt Ltd. 10/1 IT Park, Parsodi, Nagpur -440022 ...

Re: What is a Good way to Check Buffer not Empty in Windows?

> This question is related to COMM Port, When I make a > Read Request or a Write Request to a Device through Serial port, > I get a response back from the board. Now the dev...

LPC3180 SPI interfac   [2 Articles]

Hello friends, =C2=A0 I want to use SPI interface of LPC3180 to fetch data from ADC and DAC chips= . The maximum data length supported by LPC3180 is 16 bits and data length pro...

Re: Cortex-M3 from NXP?   [2 Articles]

Hi, > > NXP will release LPC1000 family based on Cortex-M3 in the end of this > year(Q3/4) and early next year(Q1). > After some googling around looks like the firs...

Re: Re: 3 phase AC drive using LPC2136   [5 Articles]

> Dear Deshmukh, > > I am using a LPC2138 for phase control of an ac-ac converter (W3C > topology). I have faced lots of problems and non-conforming (to the > specs) beha...

LPC2378 Max practical ADC rate?

Hello, I am considering useing the LPC2378 (on the Keil MCB2300 board) to collect short bursts of data - 50 to 200 samples. I would like to sample at 200Khz... Has anyone tr...

Re: FREERTOS queues

In fact I've found the problem with processing interrupts. the IRQ SP grows every interrupt routine execution (LPC2129KEIL example).I'm not storing anything for future between in...

Info: ADC error on KEIL MCB2300

Hi I have had some problems with ADC readings on a V3.1 Keil=A0MCB2300 board (= LPC2378). The reason is that P1.30 (AD0.4 which by mistake is called AD0.7 in the sch= ematic) i...

Level 'dip' in the ADC readings   [8 Articles]

When I send out packets on the Ethernet port on the LPC2368 I can see a clear 'dip' in the continuos ADC readings at the time for the Ethernet packet sending. Anyoue experienc...

how to write FIQ interrupt ?   [5 Articles]

Hi , I have a query regarding FIQ interrupt. I have written a FIQ interrupt service routine as mentioned below. How can I link this FIQ_Handler to startup.s. The FIQ handl...

LPC2144 project   [4 Articles]

Hi All, I am a new member to this yahoo groups!! i know lot of high'-fi details are discussed here.....im sure to pick it up....now can u please help me with this basic stuff?? ...

Signed 64 bit 32.32 fixed point multiplication algorithm problem   [2 Articles]

Hi does anyone know how to do signed 64 bit multiplication on an arm7-tdmi core (LCP2364) I only require the centre 32 bits of the result as the values shouldn't roll into t...

Conflict among the chanels of ADC on LPC2214   [4 Articles]

hello, I write a funtion to read adc on LPC2214.but sometime the result of that function mix between the result of chanel 1 and chanel 2 of ADC ex on AIN0 is 2.5v the result shou...

Regarding LPC23xx ADC   [2 Articles]

Hi guys, I have tried to setup a software controlled AD conversion for ch 0-5=20 but I only read 0x3FF from the result registers?? Below is part of my code. First adc_init i...

Enabling only FIQ interrupts within vectored IRQs   [2 Articles]

Okay, I'm hoping Paul has his beady eyes open and catchs this one :) We need 12-13 bits ADC resolution on our LPC2103 and we're looking to implement oversampling to achieve th...

Re: Re: USB bit-banged Virtual COM - 20 ports or more!   [3 Articles]

Hello, There are many 8 or 16 serial ports cards on the market, but they cost as much as another PC or even more! I am thinking that amature robotics and automation (like house...

Help me about Non_Aligned access on ARM LPC2214   [9 Articles]

thank for attension on my problem at LPC2000 yahoogroup! i'm using LPC2214 to collect data form ADC chanel control and store it in the ARRAY data by timer interrupt match each 1m...

help Non-aligned access :thumb instruction

thank for attension on my problem at LPC2000 yahoogroup! i'm using LPC2214 to collect data form ADC chanel control and store it in the ARRAY data by timer interrupt match each 1...

Re: LPC2103 + optimisation + MAM = Memory & Register misreads (how can I fix thi   [2 Articles]

> Any help would be greatly appreciated Hi Darcy It seems very strange that there should be a difference caused by ldr r0, [r3, #+0x004] rather than ldr r3, [r3]...

help problem when Timer interrupt   [2 Articles]

I want to send data collected by ADC chanel 2 , 3 each ones milisecond by using timer 0 interrup and send it to PC but my data is only sended for 3 times and doesn't send any th...

LPC2138 ADC Question   [9 Articles]

We are having strange behavior with our ADC code. In many of the examples I have seen in this forum, there seems to be a strong trend toward the following sequence of events: ...

How to store data on PC as text file from string   [2 Articles]

Hi Well, I have written a program to sample a pressure sensor through an ADC and store the data on an MMC using LPC 2148 (NOT USING ANY FILE SYSTEM). I have saved the data as str...

ADC not working on Embedded Artist   [3 Articles]

hello frenz, i really dont understand why my progran for ADC not working... Could u please have a look at my program and temme wats wrong. #include void sent_uart0(uns...

MiniOn system SourceForge page

The SourceForge page for the MiniOn Programming system for microcontrollers is at http://minion-system.sourceforge.net Future releases of the software will be available at t...

Announcing the MiniOn Programming Environment version 0.9   [6 Articles]

Ok folks, I can not longer keep it secret, its unleashed upon the world... Introduction to the MiniOn programming environment by Daniel L. Marks (p...@gmail.com) April 6, 20...

ADC & PWM

Hi all CPU=3DLPC2148 crystal =3D 12 Mhz PLL =3D 4 Following pgm I wrote to get PWM freq 1.2 Khz, but it is generating=20 1.5 Khz, with correct duty cycle of 50%. I want ADC...