re: CRP exploits using JTAG
2006-02-08 by Jayasooriah
Tom, I cannot find anything in your reference that says you cannot access the JTAG port while the processor is in reset. I hope I am not missing something
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ADC leakage on LPC2148....?
2006-02-08 by myfriendmarkis
I m using the LPC2148 and have a serious problem. I m using one of the ADC channels to measure battery voltage (across 2AA cells). When the microcontroller is
Re: [lpc2000] UART CTI ( Character time out indicator) Interrupt
2006-02-08 by Kerem Or
What is your rx fifo settings ? Kerem ... From: swetha_araga To: Sent: Wednesday, February 08, 2006 2:56
Re: [lpc2000] UART CTI ( Character time out indicator) Interrupt
2006-02-08 by Robert Adsett
... Two questions - How big is the packet you are receiving? - What is your receive threshold set to? Robert Freedom has no meaning of itself. There are
Re: LPC3180 data sheet available
2006-02-08 by unity0724
... Hi, Thanks to the Cirrus logic Chip info. Do they have a version with large internal SRAM (Like Sharp/Philips/Atmel) which make it even better? For your
Re: [lpc2000] LPC3180 data sheet available
2006-02-08 by Tom Walsh
... Yes, look at the Cirrus EP930x (EP9301, EP9302, ...). That family boots from an SD Flash memory, it pulls in a small amount of code from the SD memory (if
How robust is LPC2103 Flash memory read protection??
2006-02-08 by unity0724
Does anybody know how robust is the LPC2103 flash read protection?? I m switching from LPC2124 to LPC2103. This new chip is great!! I did not use LPC2104 due
Re: [lpc2000] re: CRP exploits using JTAG
2006-02-08 by Tom Walsh
... Understandably, Philips does not go into detail as to how JTAG operates, this is an IEEE spec now and documents are available elsewhere. JTAG is very very
Re: LPC3180 data sheet available
2006-02-08 by unity0724
Umm... - LPC3180 loads nand flash to internal SRAM - May be they will load from USB/SPI,I2C in future. 16KBROM inside. Have not seen a chip that boot from SD.
LPC2103 PLCC44 package
2006-02-08 by gussabina
Hi: Someone knows if the LPC2103 with PLCC44 (or 48 pines) package is already available? I looked for it at Philips web site and Digi-Key, but I did not find
Re: Bootloader not always invoked after reset with P0.14 low
2006-02-08 by Guillermo Prandi
Ooof... seems like a stinky sticking problem. I ll better attack it only if it becomes a real PITA. For the moment, instructing the programming operator to do
UART CTI ( Character time out indicator) Interrupt
2006-02-08 by swetha_araga
Hi, I am using MODBUS serial communication through UART on LPC2138. My transmission works fine, but for some reason during reception, I never seem to get the
Re: [lpc2000] LPC3180 data sheet available
2006-02-08 by Peter Jakacki
Arrhhh, if only it had a bootloader that could load from SD memory cards into internal RAM and then a secondary bootloader could then perform the high-level
Re: Bootloader not always invoked after reset with P0.14 low
2006-02-08 by Jayasooriah
Hi Guile, I should have said power on reset . I removed the problem (was not keen on solving it at that time) by avoiding use of GPIO pins that the boot
LPC3180 data sheet available
2006-02-07 by elektrknight
Hi, A bit more LPC3180 details in the data sheet at Philips website: http://www.standardics.philips.com/products/lpc3000/pdf/lpc3180.pdf thanks, elektrknight
Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Guillermo Prandi
Thanks, Richard. I ll try to dig deeper on it. Guille ... is ... and ... register ... to ... restrictions,
Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by robertadsett
... I m suggesting it needs to be verified one way or the other. Certainly the observed behaviour suggests that as a possibility. There are, of course, many
Re: [lpc2000] Re: new to lpc2000
2006-02-07 by Xtian Xultz
... I am. I use Wiggler and a program called exmon that interfaces gdb and Jtag. Exmon can be downloaded freely here:
Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Guillermo Prandi
Yes, with LPC you can tell the source of the startup, but in this case the startup is hardware-originated, so I am pretty sure it is hardware. You suggest that
LPC2148 SSP FIFO manipulation
2006-02-07 by deliconn
I am using the SSP on the LPC2148 as a buffered SPI interface to a custom CPLD design. I love the FIFO for transactions where I only need to write to the
Re: [lpc2000] Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Tom Walsh
... I d noticed something like that as well. I played with the watchdog a little and found that it didn t work as expected. IIRC, I had to do a powerdown to
Re: [lpc2000] embarrassing question
2006-02-07 by Tom Walsh
... Depends on the dev system you are using, I suspect that the modified Keil compiler / linker will let you assign a hard address to a function with their
Re: IAP and then strange behavior
2006-02-07 by fl429
Hi, Bob, Thank you for your help. It turned out the problem was caused by a buffer overflow. My own fault. Your tip helps. Best regards ! Greg ... symptoms ...
Re: simulator
2006-02-07 by martinbrendes
Glen, if you want to do execution time measurements, you need a tool with real-time trace and time stamp. Our BICEPS emulator is able to calculate time
Re: [lpc2000] Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Robert Adsett
... Truthfully, I don t know. I only raise the possibility because the User Manual indicates there is an internal flag set by the watchdog so that if it is
Re: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Guillermo Prandi
Hi, Jayasooriah. What do you mean by hard reset ? If you mean having the reset pin low, then I *am* performing a hard reset. The problem shows up when I
Re: GDB on rs232 (lpc2292)
2006-02-07 by boje_d
... running ... You ... some ... current gdb ... internal ... use it ... program ... uClinux. ... Ill look into it. Thanks a lot Boje Demant
Re: [lpc2000] lpc2148 usb + gcc
2006-02-07 by Sean
Dmitry: Probably yes, check out the assembler listing file when you compile the source code. I don t have the Keil compiler so I can t check it. I d assume
Re: [lpc2000] lpc2148 usb + gcc
2006-02-07 by Dmitry Diky
Sean, does it mean that *(__packed long *) a = *(long *)b; is actually memcpy(a,b,4) ??? Cheers, Dmitry.
Re: [lpc2000] lpc2148 usb + gcc
2006-02-07 by Sean
Dmitry: __packed means that there will be no gaps left around that variable. Normally a long would be put on a 32-bit boundary, however the __packed attribute
Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Guillermo Prandi
... Well, yes... the program might have triggered the watchdog but... why should it matter after the reset pin being low for half a second? Guille ... noticed
Re: [lpc2000] lpc2148 usb + gcc
2006-02-07 by Dmitry Diky
Hi Bertrik, ... Thanks a lot... I looked into KEIL s examples and found __packed keyword which appeared in the from of long . I m puzzled there, for example:
Re: new to lpc2000
2006-02-07 by Robert Adsett
... For development (at least until you run out of pins) a JTAG setup is just about mandatory. You can use serial ISP for download when you don t have JTAG
Re: Fwd: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Robert Adsett
... Any chance you ve triggered a watchdog or some such? Robert Freedom has no meaning of itself. There are always restrictions, be they legal, genetic,
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2006-02-07 by vineet jain
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re: CRP exploits using JTAG
2006-02-07 by Jayasooriah
Dominic, I do not think this is the threat the designers were defending. Date: Mon, 6 Feb 2006 21:21:04 +0100 From: Dominic Rath
re: CRP exploits using JTAG
2006-02-07 by Jayasooriah
Re: [lpc2000] embarrassing question
2006-02-07 by Sean
Which compiler are you using? Try this instead: ptr = (unsigned char *)(((unsigned long)ptr) & 0xFFC0); that s because when dealing with pointers, the +
re: Bootloader not always invoked after reset with P0.14 low
2006-02-07 by Jayasooriah
Hi Guille, I have seen this problem before on 2292 and the culprit appears to be what the boot loader does on watchdog resets when there is on-chip flash
embarrassing question
2006-02-07 by G B
Hello, I have been doing assembly so long, that I am having trouble with my C program. I have records of 64 bytes in length, and the start of the record area
Update Keil USB examples and new copyright wording
2006-02-06 by philips_apps
All, we have been working with Keil to make the USB code completely stable and there have been changes in the copyright wording too. Basically the copyright is
Real-time trace
2006-02-06 by martinbrendes
Hi LPC users, I want to inform you that a new LPC tool is available. The BICEPS for your ARM is a real-time trace emulator for ARM controllers. We could solve
Re: [lpc2000] Re: CRP exploits using JTAG
2006-02-06 by Dominic Rath
Hello, ... You can t access the JTAG port while the device is in reset, because the LPCs keep the test logic in reset, too. Test logic comes out of reset in
Re: CRP exploits using JTAG
2006-02-06 by dr_danish_ali
Hi Dominic, If the clocks are unrelated / asynchronous and you rely on RTCK, then sure the fastest you can run the TCK at is 1/6 of the core frequency. But if
Re: [lpc2000] lpc2148 usb + gcc
2006-02-06 by Bertrik Sikken
... Yes, I got the examples working to the point where the USB device is recognised by Windows, but have not extensively tested them. The USB mass storage
Re: [lpc2000] lpc2148 usb + gcc
2006-02-06 by Bertrik Sikken
... Yes, I got the examples working to the point where the USB device is recognised by Windows, but have not extensively tested them. The USB mass storage
RTS/CTS on UART1 - LPC2129
2006-02-06 by Gazelle
Hello all, I want to setup an LPC2129 on UART1 at high baudrates in order to connect it with a Silicon Labs CP2102-GM RS232-2-USB2.0 Bridge (slave). The code
Re: RS485 and UART1
2006-02-06 by varuzhandanielyan
My question was about avoiding uncertainty of interval betveen writing to U1THR and start of the actual transmittion. Having sertain timing on can foresee
Re: [lpc2000] lpc2148 and camera interfacing
2006-02-06 by David Hawkins
... FYI: It uses an XScale ARM processor, so I hope this is not considered too off topic :) Grab a Linksys WRT54G if you want to play with MIPS :) Dave