Re: Re_ Non-Volatile Memory
2005-06-13 by Richard
Check out Fujitsu and Ramtron. (Ramtron has serial FRAM) Richard ... write *and*
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Re: [lpc2000] Re_ Non-Volatile Memory
2005-06-12 by Bob Paddock
... FRAM s usually do have access cycle limits, which apply to both write *and* read, however they may be measured in the billions for some devices. Do you
Re: [lpc2000] 100 MHz clock using LPC2138
2005-06-12 by Micron Engineering
... LPC2138 may have a clock lower then 60MHz so it is not possible to generate directly from LPC2138 100MHz clock. Also if you need to transfer data from a
Re_ Non-Volatile Memory
2005-06-12 by Owen Mooney
The FRAM products offer non volatile - fast read and write - no limitation on write cycle and a reasonably priced. Owen Mooney
Re: [lpc2000] 100 MHz clock using LPC2138
2005-06-12 by Robert Adsett
... If you mean the LPC is to generate and clock out data at 100MHz it s not going to happen. The LPC is only a 60MHz device. BTW, where are you getting the
I2C problem
2005-06-12 by Boris Kralik
Hi guys. I have problem with I2C on LPC2294; I set SDA and SCL wires as I2C: PCB_PINSEL0 |= 0x50; //Set SCL and SDA PCB_PINSEL0 &= (uint32_t)0xFFFFFF5F; and
[lpc2000] 100 MHz clock using LPC2138
2005-06-12 by sudip nag
My requirement is basically to transmit data from one microcontroller (LPC2138) to the other at 100MHz. Thus the clock generated must synchronize the data.
Re: 100 MHz clock using LPC2138
2005-06-12 by weverest3
... of 1 MHz, with 50% duty cycle using LPC2138. Any suggestion how to generate the same. Match functionality is inappropriate for generating such high
Re: [lpc2000] 100 MHz clock using LPC2138
2005-06-12 by Leon Heller
... From: sudip nag To: Sent: Sunday, June 12, 2005 7:16 AM Subject: [lpc2000] 100 MHz clock using LPC2138
100 MHz clock using LPC2138
2005-06-12 by sudip nag
Dear All, I would like to generate 60 MHz to 100 MHz clock, in controlled step of 1 MHz, with 50% duty cycle using LPC2138. Any suggestion how to generate the
ADC Burst/Scan not functioning in LPC2114. Need example.
2005-06-11 by weverest3
I am trying to get ADC channel-scanning to operate. The function is only available in burst mode. The following code looks good, but only the lowest-order
Re: Strange behaviour of the VPBDIV register
2005-06-11 by Richard
errata
Re: Strange behaviour of the VPBDIV register
2005-06-11 by gustavo_sagasti
Hi Robert: It is documented in some place? (Just to aware about other possible errors...I was several hours with this problem!!!...) Thanks! Gus ... of ...
Re: [lpc2000] Strange behaviour of the VPBDIV register
2005-06-11 by Robert Adsett
... That s known behaviour. You have to read VPBDIV twice to be sure of getting the correct value. Robert Freedom has no meaning of itself. There are
Strange behaviour of the VPBDIV register
2005-06-10 by gustavo_sagasti
Hi: I tried the following code: #include #include #define OSC_CLOCK_FREQ 14745600 #define CR 0x0D void UARTInitialize(unsigned int
Re: Re_ [lpc2000] Non-Volatile Memory
2005-06-10 by johnthomasedwardtimm
If you have a free 8 KB sector, why not write successive 32 byte blocks until you reach the end of the sector and then erase. You can search linearly to find
LPC2294 - Intneral flash security
2005-06-10 by Joseph Goldburg
Hi All, Can the internal flash be locked and protected from commands/instructions run from external flash or extneral SRAM? Regards Joseph [Non-text portions
Re: Error reading the ADC
2005-06-10 by soren_t_hansen
... Solved the problem myself. It turned out that it was yet another error in the Keil/Hitex documentation. The Pot1 isn t connected to the AIN0 but the AIN1 -
RE: Re_ [lpc2000] Non-Volatile Memory
2005-06-10 by Matthias Hertel
http://www.keil.com/download/docs/298.asp _____ From: sentto-11453166-7607-1118406630-matthias.hertel=web.de@returns.groups.yahoo. com
RE: Re_ [lpc2000] Non-Volatile Memory
2005-06-10 by Tom Convent
Hello, I just want to experiment that I stored a variable of 8bits at non-volatile area, switch off processor and read the same variable in next power on. Does
RE: Re_ [lpc2000] Non-Volatile Memory
2005-06-10 by Matthias Hertel
Hello Sridhar, you should consider the I2C EEPROM if you have a lot of write cycles to that memory area. It is cheaper to replace in the circuit when it should
Error reading the ADC
2005-06-10 by soren_t_hansen
I have set up the ADC to run in hardware mode, and is sampling at a rate of 60 Khz over 4 channels. I use the Keil MCB2130 eval. board, which means, that I
Re: Re_ [lpc2000] Non-Volatile Memory
2005-06-10 by Sridhar gadda
Hello Ralf, I agree with you that external eeprom is an option, but we have a choice to use NV-area of LPC so that overall cost of broad can come down
SV: [lpc2000] Re: Frequency counter
2005-06-10 by Helge Fabricius-Hansen
Hi, I would say that counting pulses during 1 - 10 seconds will give you the most accurate frequency. Using a capture input set to either pos or neg edge.
Re: [lpc2000] Re: Frequency counter
2005-06-10 by Richard Duits
The short fragment of code below can be used to measure frequency on a capture pin. Initialize FIQ_R8 to the timer address and FIQ_R9 to -1 and enable the fast
RE: [lpc2000] Re: Frequency counter
2005-06-10 by Dan Beadle
This method works very well for low frequencies, but it can have substantial error at high frequency where multiple interrupts are running. The interrupt
Re: [lpc2000] Re: Frequency counter
2005-06-10 by Martin Maurer
Hello, i don t know if there is any hardware support for this ? Here are two not elegant solutions, but give you perhaps an idea ! Easiest way without hardware
RE: [lpc2000] Re: Frequency counter
2005-06-10 by Dan Beadle
If you can sample over 1 second, this is pretty simple. Just set the signal up on an interrupt (rising or falling edge). Count the interrupts over 1 second.
Re: Frequency counter
2005-06-10 by lehighuboy
I need to read the frequency of a 50% duty cycle waveform from 0 to 200kHz (+/- 1Hz) using the LPC2129. Any suggestions? Thanks, Garrett
Re: pb with rs485
2005-06-10 by relentless_6995
Strike my comment about the timer - LSR & 0x60 will complete the job. ... of ... transmit
Re: pb with rs485
2005-06-09 by relentless_6995
Try waiting for ((LSR & 0x60) == 0x60) to be true before switching your driver. That may help. You still may have to start a timer and wait for an interrupt
Re: pb with rs485
2005-06-09 by Angel Sanchez
... The UART has double buffer, so you must do the test: while (!(U1LSR & 0x60)) watchdog(); //wait last character transmit for the REALLY end of transmision
pb with rs485
2005-06-09 by sebfr74
Hi, I use UART1 to make a rs485 with GPIO0.10 for the direction. I ve got a problem, when I look the transmission with an oscilloscope the sens go to level 0
Re: [lpc2000] OT: linux group
2005-06-09 by Robert Wood
... yahoo were full of spam and junk.
Re: [lpc2000] OT: linux group
2005-06-09 by Leon Heller
... From: Gus To: Sent: Thursday, June 09, 2005 6:19 PM Subject: [lpc2000] OT: linux group ...
OT: linux group
2005-06-09 by Gus
This is off topic. Do you guys know of any good group for linux. All the ones I found on yahoo were full of spam and junk. Gus
Re_ [lpc2000] Non-Volatile Memory
2005-06-09 by Ralf Knorr
Hi Tom, I m using 2106 and 2114 and I think the only possible way to store internal data is to use the IAP function. But than you will use minimum an 8kB flash
Non-Volatile Memory
2005-06-09 by Tom Convent
Hello Guys, LPC devices had an non-volatile area where variables can be initialliazed to hold values even after power switch off or processor reset. I want to
Re: Setting up LPC2132 ADC in Hardware mode
2005-06-09 by Karl Olsen
... ... With this code, your AD_ISR() should never be called. If/when an IRQ triggers, the CPU jumps to address 0x18, which in your
Re: [lpc2000] Re: Storing in RAM
2005-06-09 by Sridhar gadda
Hi Faurie, yes I am using Keil enviornment and thanks for the information. its a great help. regards, Sridhar Gilles FAURIE
Re: Setting up LPC2132 ADC in Hardware mode
2005-06-09 by soren_t_hansen
... I ve managed to enter the interrupt handler once, but after that, nothing happens. Does this setup disable interrupts, which I then have to enable again
Re: [lpc2000] Re: Storing in RAM
2005-06-09 by Gilles FAURIE
Hello, You have perhaps Keil envrionment because you use ULINK. If you use KEIL you only have to add a #pragma NOINIT before declaration of your variable. with
Re: [lpc2000] lpc2000 manual
2005-06-09 by Robert Adsett
... That s in the appropriate user manual for the particular chip. They do share user manuals for subsets. Robert Freedom has no meaning of itself. There
Re: Driving RS-232 at ONE uA.
2005-06-08 by charlesgrenz
Hi Owen, You may want to look at Sipex or Intersil instead of the maxim parts. Charles ... there is ... signal
Re: Reading the frequency
2005-06-08 by dukearmlover
... soren_t_hansen@y... ... frequency ... Mhz, ... Hello, I had exactly the same problem. Running my very first program on a LPC2129 - Olimex LPC-P2129 (using
Driving RS-232 at ONE uA.
2005-06-08 by Owen Mooney
Actually I can t measure it, so it is below 1 uA, but only when there is no data. 1 transistor, 1 fet, 2 diodes, and some passives At this state the Fet and
Re: LPC2131 ADC Input Impedance
2005-06-08 by drb5599
... Yes, Good point. I will not be sampling this pin very fast at all, so speed is not really the issue in this particular application. I am really more
lpc2000 manual
2005-06-08 by rseku
I start having fun with ARM. I at the stage of reading LPC2000 manuals. One from Hitex, others from http://semiconductors.philips.com. But I am still missing
Re: [lpc2000] LPC2131 ADC Input Impedance
2005-06-08 by rseku
I m not sure, that You know if high source impedance will increase sample collection time.
Re: LPC2138 supply current in power down (attn please Phillips Apps)
2005-06-08 by lp2000c
The copy of Data Sheet LPC2131_32_34_36_38_2.pdf which I see on the Philips site is dated 15 April 2005. Where did you find revison 20050516? ... indicates