Re: [lpc2000] No 3.3V pullup on LPC2212 P2 & P3
2004-11-11 by otc_friend
... Often the impedance is very high in such a mode. I don t know the exact circuit Philips uses and don t have a part here to try it out. What is the
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Re: CAN Timing and BTR
2004-11-11 by zarozaro
I think the equation is: CANBaudRate=pclk/(16*(BTR+1)) or BTR=pclk/(16*CANBaudRate) -1 where BTR are bits 0-9 in CANBTR register. Zaro ... bus? ... 60 MHz.
RE: [lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-11 by Paul Curtis
Henry, ... Requires multiple licenses, per-processor royalties, they can t alter the instruction set, ARM isn t ultra low power, ARM is 32 bits. That s five
Re: [lpc2000] I/O Speed - An Explanation
2004-11-11 by capiman@t-online.de
Hello, first many thanks for your explanation ! We had a similar thread in this mailinglist at 1st of Feb 2004 (name: Optimization of capture routine...).
Re: [lpc2000] problem write in flash
2004-11-11 by Robert Adsett
... Ram. The IAP routines use some memory at the top of ram as a scratchpad as I remember. Check the user manual. You could also change the flash length too
Re: [lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-11 by otc_friend
... any ... Often the chip manufacturers probe the market with new product ideas before any realisation of the product. Just to see if is there an interest
Re: [lpc2000] problem write in flash
2004-11-11 by dasbento@aeiou.pt
Hello Robert: only a question, you want say even Change the LENGTH parameter of ram , not is change the length parameter of flash??? I will have the whole
Re: [lpc2000] problem write in flash
2004-11-10 by Robert Adsett
... ... The simple answer is no. It doesn t reserve the space needed. The simplest place to reserve it would actually be in the ld file. As a quick
Re: [lpc2000] problem write in flash
2004-11-10 by dasbento@aeiou.pt
Hello, I want use the flash into the arm since are only more or less 50 bytes the constants variables!!! I would like somebody to see if this boot.s works with
Both 8 bit and 16bit access in EXT Memory
2004-11-10 by tynerae
Hello, I have an LPC2212 connected via 16 bit ext. memory bus to a 16 bit SRAM. The UBLS and LBLS are connected. Is it possible to access a byte at a time with
No 3.3V pullup on LPC2212 P2 & P3
2004-11-10 by tynerae
To reduce power consumption in power down mode, I use PINSEL2 to disconnect the EMC and revert external memory bus to inputs. Since these are on P2 and P3 with
I/O Speed - An Explanation
2004-11-10 by philips_apps
Here is an explanation of the I/O toggle speed that is observed in these devices. Richard The I/O speed has a maximum at ~3.7 Mhz because of several reasons,
ADC sample and hold
2004-11-10 by lxlxlx_83
Hello, I would like to know if the ADC in the LPCxxxx family have a sample and hold circuit. Thanks
Re: [lpc2000] problem write in flash
2004-11-10 by Robert Adsett
... Well, the startup has to reserve space for the IAP working memory. Other than that there shouldn t be an issue with startup code. Personally I d use an
problem write in flash
2004-11-10 by dasbento@aeiou.pt
Hello, I already tried the code the message 3905 for write in flash and the program stop in command: iap_entry(command, result); It can be because boot.s
Re: [lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-10 by Robert Wood
... No, I was being disparaging about Maxim s incredible ability to release a thousand products a month, but to them never be able to actually deliver any of
RE: [lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-10 by Paul Curtis
Robert, ... The eval board is $125 last time I looked. -- Paul Curtis, Rowley Associates Ltd http://www.rowley.co.uk CrossWorks for MSP430, ARM, and (soon)
Re: [lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-10 by Robert Wood
... when running programs. It s single cycle, and has lots of accumulators (registers). Its performance runs rings around the AVR and MSP430, but the LPC
RE: [lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-10 by Paul Curtis
Henry, ... The MAXQ2000 (the first processor out of the box) is very impressive when running programs. It s single cycle, and has lots of accumulators
Re: [lpc2000] read variables stored into flash???
2004-11-10 by Robert Adsett
... value = *location_address; Or equivalent, presuming everything has the proper type. It s the equivalent of reading any const qualified value. There is
[lpc2000] New MAXQ2000 RISC controller arrived from Maxim
2004-11-10 by otc_friend
Hello all - I just received an interesting note about a new RISC controller from Maxim: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4466 Sound interesting.
read variables stored into flash???
2004-11-10 by dasbento@aeiou.pt
Hello group, I see the message 3095 that stores some calibration variables into flash. I still not tried but i want know how read this variables?? Does anyone
New bootloader (1.52) and IAP problems?
2004-11-10 by gilles_baracoda
Hello, I am using old LPC2106, and had to manually upgrade their bootloader to version 1.52. I can always program the prototypes using ISP, but some of the
CAN Timing and BTR
2004-11-10 by peterburdine
Does anyone have a good way to generate the timings for the CAN bus? I ve tried to do some of the math by hand, but I can t seem to ever get it right. What I m
Re: save data in memory non-volatile???
2004-11-09 by peterburdine
It is possible to save that data in the flash using IAP function calls. You just have to make sure that it is not the same area as your program. --Peter
save data in memory non-volatile???
2004-11-09 by dasbento@aeiou.pt
Hello, somebody knows if I can save data in memory non-volatile in LPC2129???, i.e., save some variables in memory the program for not to lose, when power down
Re: [lpc2000] Unique ID
2004-11-09 by Charles Manning
The device Id is fixed per-device type according to part_id-table.pdf in the files section. If you want a small, very low cost, unique per-unit id, I d
Unique ID
2004-11-09 by edsonghidini
Hello, I would like to know if the device identification returned by IDCODE instruction is unique. I need to get one key to encrypt one password that can t be
RE: [lpc2000] Re: MAX3232 and MAX232
2004-11-09 by Dan Beadle
TI makes a 3V part. I have some good success with it - about $1. Uses .1 or 1uf chip caps, which are cheap. Available from Digikey. _____ From: acetoel
Re: Interrupt Handline
2004-11-09 by Randy Ott
It also keeps you from fiddling with the startup code when you want to write apps with or without IRQ. I should also mention that if you are using GCC you will
Re: UART ISR
2004-11-09 by c51dude
... linking. ... Hmmm. I don t get ANY errors or warnings. Are you using the latest ARM release? We just put V1.5 on the web site. The URL is:
Re: UART ISR
2004-11-09 by c51dude
... Thanks, That s fixed and we added a target for the MCB2100 and ULINK. A problem that we noticed is that the default VPB gives a pclk of 15MHz which is not
Re: [lpc2000] MAX3232 and MAX232
2004-11-09 by Robert Adsett
... On the other hand the TI MAX3238 is rated to 3.3 V and is in my experience both cheaper and more readily available. Robert Freedom has no meaning of
Re: MAX3232 and MAX232
2004-11-08 by acetoel
... not ... Hello... I cannot find any supplier in argentina for this MAX version. In fact, I think I m the only LPC user in Argentina...jajaja... Well, I ll
Re: [lpc2000] Re: Interrupt Handline
2004-11-08 by microbit
Hi Randy, Thanks, I must have overlooked something, because I was in the belief that the VICVectAddr was lost once in the irq_handler , thought could only
Re: UART ISR
2004-11-08 by peterburdine
It tries to overwrite functions in the library and fails at linking. How do I get around this? Thanks, Peter
Re: [lpc2000] MAX3232 and MAX232
2004-11-08 by Paul Stoffregen
I tried once to use the TI MAX232 at a lower voltage, and it did not work under approx 4 volts.
Re: Interrupt Handline
2004-11-08 by Randy Ott
... programnmed ... table when ... Here s the way I do it: // IRQ exception handler. Calls the interrupt handlers. __irq __arm void irq_handler(void) { void
Re: UART ISR
2004-11-08 by johnnorgaard2003
Hi There is a small error in the code. In sio irq it should be case 0x04: case 0x0C: NOT case 0x04: case 0xC0: best regards John
Re: UART ISR
2004-11-07 by c51dude
There is an interrupt-driven example on the Keil web site: http://www.keil.com/download/docs/lpc2100_sio.zip.asp Jon
RE: [lpc2000] MAX3232 and MAX232
2004-11-07 by Dan Beadle
Take a look at TI cross. They are much cheaper, widely available. _____ From: Micron Engineering [mailto:micronpn@tin.it] Sent: Sunday, November 07, 2004 9:18
Re: [lpc2000] MAX3232 and MAX232
2004-11-07 by Micron Engineering
... MAX232 and MAX202 may work but RS232 voltage levels (and currents) aren t guaranteed so it is not design a board using MAX202 and MAX232 to work at a
Re: [lpc2000] MAX3232 and MAX232
2004-11-07 by Robert Wood
... MAX3232 would be best, if you can get one, as it will be within its spec.
RE: [lpc2000] MAX3232 and MAX232
2004-11-07 by Leon Heller
... I ve had a MAX202 working OK at 3.3V, so a MAX232 will probably be OK. The MAX3232 would be best, if you can get one, as it will be within its spec. Leon
Re: [lpc2000] MAX3232 and MAX232
2004-11-07 by Micron Engineering
... Yes you can but this means that you need also a +5V power supply. My idea is to have only one supply for cpu, memory and i/o because LPC i/o is +5V
MAX3232 and MAX232
2004-11-07 by acetoel
Hello... I m makign my own board for LPC. May I used a Max232 instead of the MAX3232 that everybody use? I m taking in consideration that LPC I/O s are 5V
Re: [lpc2000] Interrupt Handling
2004-11-07 by Robert Adsett
... That really shouldn t be necessary, the download tool should take care of that. I ve never modified it directly myself. Robert Freedom has no meaning
Re: [lpc2000] Interrupt Handling
2004-11-07 by Robert Wood
... Crossworks. ... directly..
Re: [lpc2000] Interrupt Handling
2004-11-07 by microbit
Apart from the VIC handler, you shouldn t have a pressing need to change the vector table, they re all weak symbols, so you just need to define a handler with
Re: [lpc2000] Interrupt Handling
2004-11-07 by Robert Wood
Thanks, Kris. ... you change it !