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Re: LPC2103 P0.2 and P0.3 problem

Hi Paul That is a little worrying (not knowing which document is to be believed...). However in my case I do have a pull up and also it is used as output only in the applicat...

Re: LPCUSB on LPC23xx not working still....

--- In l...@yahoogroups.com, "cfbsoftware1" wrote: > --- In l...@yahoogroups.com, "bobtransformer" wrote: > > > > A couple of differences I notice are the USB CLO...

LPC2368 UART1 vs. UART0 - 115k baud issue?   [11 Articles]

Hi all, I am trying to get a simple pass thru of data at 115k from uart 1 to uart 0 on an lpc2368. Both are enabled (powered) and if I use 9600 baud rates, everything is fi...

Re: USB & lpc2148   [4 Articles]

> --- On Tue, 10/13/09, supriya albal wrote: > > From: supriya albal > Subject: Re: [lpc2000] Re: USB & lpc2148 > To: "supriya albal" > Date: Tuesday, Octobe...

questions re ssp0 rx and dma   [3 Articles]

On a LCP2378. I am using PWM to toggle control lines of a a/d and start a ssp (master) transfer at a 5us interval. I've setup the DMA to move the (16bit) data to usbram. DMACC...

Re: Basic NXP clock speed   [3 Articles]

Hi: The PCLK depends of your register settings (PCLKSEL0 and PCLKSEL1). It could be CCLK, CCLK/2,CCLK/4,CCLK/8. IO jitter is produced most likely because of the microcontroll...

New OPEN HARDWARE boards for the ARM Cortex-M3 LPC175x, from Opendous (the same guy from AVRopendous)

Hello :-) I am happy to announce the "Cortopendous" boards, Open Hardware. The person responsible for them is Matt, the guy behind the successful AVRopendous boards (also Open...

LPC2148 Blink Tutorial

Hey guys i finally got around to making a blink.c file i hope will help a lot of users learn some ARM. This will explain how to set/clear pins and the PINSELx, IOxDIR/IODIRx, and d...

PWM VS TIMERS   [6 Articles]

Hello everybody, I'm quite a newbie in ARM programming (even if i met this =B5 in the past) = and i have a question about PWM implementations.=20 I'm planning to use a lpc24...

Fwd: I2C Issue   [3 Articles]

The I2C Protocol which you have sent is fine , Coming to the Vectored Interrupt Controller Initializations , I have compared the init part of your coding with mine . Just ...

I2C Issue

The I2C Protocol which you have sent is fine , Coming to the Vectored Interrupt Controller Initializations , I have compared the init part of your coding with mine . Just Check ...

FIQ - How to setup it on LPC210x?

Hi all, I am trying to make a fast interrupt work on the LPC2101.. It sens that all interruptions are disabled in the startup code, but I could not find a way to enable it in ...

Re: LPC236x and External PWM input clock

--- In l...@yahoogroups.com, "bobtransformer" wrote: > OK, so now that I have found that I will not be able to use a spread spectrum EMI reducing clock with the LPC2366 we hav...

My new board   [3 Articles]

Hi all, I have built a PCB with an LPC2131 on it. It is being used to drive all six PWM outputs, so the UART connections for ISP are taken up and I have to use JTAG. Its ...

Occasional Manuf issue   [3 Articles]

We are using the LPC2103 and using the ISP to download code. On a handful of boards we built out of a few thousand, we see them come up with the TXD0 line toggling at a 200KHz r...

Re: LPC2378 timer0   [6 Articles]

Hi: I would recommend using the PWM module instead of Timer 0. The reason for this is that at 4.8MHz, you only have ~208ns between edges. This corresponds to approximately 1...

Re: Using DMA Controller with Timers

Hi Phil, No, a target in DMA transaction must generate DMA request. Can timer do it? - i think no. I did not try with LPC2XXX, but in STM32 DAC works under DMA control. T...

Re: RAQ about small microcontrollers

> Closer to home, I suspect ARM/Keil will kill of their 8051 compiler > tools soon, as they prepare the M0 on-slaughter. I guess it's time to > jump off the ARM7 bandwagon and...

disabling PWM & I2C on P0.02 and P0.03 on a LPC2103   [2 Articles]

I am having difficulties disabling the multiplexed stuff on P0.2 & P0.3. I am trying to use it as a simple GPIO pins. I tried disabling the I2C and PWM with these two commands...

LPC2103 and EMI noise susceptibilty etc...   [4 Articles]

Do any of you intelligent guys had experience with EMI noise susceptibility of LPC parts in high dV/dT environments ?? In this case, I'm talking about a fairly well bypassed L...

Re: about PWM1 in LPC2378   [3 Articles]

i have read user manual of LPC2378. in which they have written dual edge controlled options selecting in PWM1PCR for PWM2,PWM3,...,PWM6. how is it working?what is the differenc...

Problem with Port2

Hi, I'm having problems acessing Port2 on LPC2378. Does anyone can help me? I already tried to use it as GPIO and PWM and it still not working. thanks! ------------------...

lpc2919 help   [2 Articles]

I'm currently in a senior design lab and we are using the LPC2919 as our microcontroller but have been having issues with getting the PWMs and timers working correctly. We are usi...

Re: Re: Using LPC2470 with no Flash at all...   [3 Articles]

On Sun, 15 Mar 2009 00:06:20 -0000, you wrote: > > This will probably work. I'm using an LPC2478 with an external SRAM (256K x 16) for video RAM, and it's working fine. My LC...

Re: those crazy interrupts (2138)   [6 Articles]

My sediments (or is that sentiments) exactly. Do you have a suggestion? Initially I want: Timer0 RTC Uart0 Comm to outside world Uart1 Comm to Pololu Low Voltage Dual S...

Re: Full duty cycle LED array driver   [5 Articles]

Mihai, what's wrong with using shift registers? For lower currents and voltages you can just use 74HCT595s etc. For higher currents and voltages I have been using TPIC6C596s. Th...

Re: Transistor power ridiculous question   [3 Articles]

Thank you JTD, I'm starting to realize how little sofware and hardware have in common. I will do PWM on the LED so the transistor will have many transitions (1KHz to 10KHz m...

Re: Re: LPC 210x acting as memory interface ??

This was all from a design I had a year or so ago, and has been put on hold in that time, during which my memory of all the intricacies of the Interrupts have faded, but on the b...

Re: os x toolchain math functions

I'm going to attach all my codes from my test. Would appreciate pointers to my errors. all h,c,s source code and Makefile If the line in main.c which calls the trig function is...

Compatibility of LPC2148   [2 Articles]

Hi, In which cases do we need to use pull up or pull down resisters? I need to interface some gates and buffers to the gpio pins of LPC2148 as dead time generator circuit. 1.Is...

ARM current sourcing capability   [2 Articles]

Hi, I want to interface two NAND gate ics to PWM pins of lpc2148 in parallel. One for dead time generation and other for complementary signal of first followed by same dead...

Re: Re: Code access

Warning: Long, pseudo-SciFi post. (I'm a little amused today for some reason) Thread milestone: Removing pins is a bad idea. Resin is not for code protection. Insisting on prot...

Starting with PWM lpc2148   [3 Articles]

Hi All, I'm trying to start with PWM to fade my leds but to be honnest i feel like reading swahili if i go through the manual from the 2148 ;-) I also looked at the code of ...

LPC2148 Demo Code Updated to Version 1.44

I've added a couple minor updates to the LPC214x demo code. As usual, it's available at http://jcwren.com/arm Should you find any undocumented features ("bugs"), I'm always in...

Problem with UDA 1344 codec

Hi all, I am using the UDA1344 codec on my board with LPC2468 MCU. I connect the sysclk pin to PWM0 and generate a 15Mhz clock for this codec. The I2S fuction work fine, I can s...

Re: Low cost and OPEN LPC214x dev board   [2 Articles]

As opposed to inactive feedback? I'd buy one for $50 if it had all that on it, and had a sensible use of pins. I don't really care about the board shipping with a SPI flash pa...

Using PWM output to drive ESC

I have an AVR based ESC(Electronic speed controller). I would like to use the PWM signal generated by LPC2148 and use this PWM signal as th input for the ESC which will drive a...

Re: [LPC2148] R/C Servo's and PWM/Timers

I have bought Suppo 18A ESC which is AVR based ESC(Electronic speed controller). I would like to have a PWM signal generated by LPC2148(ARM based microcontroller). This PWM signal ...

Re: Re: QVGA LCD and lpc2000 w/o LCD controller

On Sat, 27 Dec 2008 11:18:22 -0000, you wrote: > > Things like sync timings and pixel clocks can be generated fairly > easily using timer match outputs > > Is there any ch...

Re: Re: machine cycle needs to execute bitwise AND, OR   [2 Articles]

> > actually i want to implement software SPI in LPC2106 in fast speed. > > but it can provide me highest speed of 1MHZ. > > so any help from the experts in this regard will b...