[AD] LPC2106 boards from MPE now available
2004-05-11 by Stephen Pelc
Now available from MPE is the C and Forth programmable ARM USB Stamp. 60MHz LPC2106 ARM, 128k Flash, 64k SRAM, USB, user programmable CPLD.
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Re: [lpc2000] IAP Flash Programming w/ PLL on...
2004-05-11 by MaxStream - Ryan Bedwell
... Yes, everything looks good to me: Fosc = 20 MHz Cclk = 60 MHz M = 3 P = 2 Fcco = 240 MHz To make matters worse (or perhaps more interesting), I ve now seen
Re: LPC210x RTC
2004-05-11 by philips_apps
Hello Milos, The RTC cannot work once the microcontroller enters the power-down mode, since there will be no clock supplied through the microcontroller and
Re: [lpc2000] IAP Flash Programming w/ PLL on...
2004-05-11 by Robert Adsett
... You are in range of all the PLL specs? I ve seen the micro operate but some peripherals fail when Fcco was out of the specified range and cclk was within
IAP Flash Programming w/ PLL on...
2004-05-11 by MaxStream - Ryan Bedwell
Anyone out there had problems erasing and/or programming flash via IAP calls with the PLL on? I ve seen some problems on some (not all) of our systems where
Re: injecting an external 4 MHz clk into LPC2000, and using PLL - anyone done similar ?
2004-05-11 by philips_apps
Crystal Oscillator section in the System Control Block chapter of the LPC2114/2124/2212/2214 and LPC2119/2129/2194/2292/2294 User Manuals covers input
Re: [lpc2000] 2 applications in flash
2004-05-11 by Charles Manning
This is the model I typically use for embedded applications. The bootloader is built as a regular chunk of code. THis does two things: * Checks for a break *
Re: [lpc2000] Interfacing C and assembler
2004-05-10 by Michael Anburaj
Hi Igor, you can look at my uCOS port (http://www.geocities.com/michaelanburaj/ARM/index.html) it has assembly files accessing variables defined in C code
Re: How execute ram code after load by isp command
2004-05-10 by philips_apps
Sebastien, You are overwriting the bootloader RAM variables area. Use 0x40000200 as start address. Also relink your code to run from address 0x40000200.
Re: [lpc2000] VIC Programming Model
2004-05-10 by Robert Adsett
... The VICVectAddr register only gives the address of the highest priority IRQ, not the FIQ. ... Well, you lose the benefits of the semi-vectoring you get
VIC Programming Model
2004-05-10 by James Dabbs
On Page 70 of my LPC210X User s Manual.. Although multiple sources can be selected (VICIntSelect) to generate FIQ request, only one interrupt service routine
Interfacing C and assembler
2004-05-10 by Igor Tchoudovski
Hi together! I’m looking for code examples for integrating C and assembler in one project. How to change variables defined in C using assembler code? Best
Re: injecting an external 4 MHz clk into LPC2000, and using PLL - anyone done similar ?
2004-05-10 by tphatrapornnant
Hi, As I remember, I used to try 2.0 MHz crystal oscilator but it seemed PLL can t work at lower than 10MHz. I have just tested by changing OSC from now 10 MHz
Re: [lpc2000] Re: injecting an external 4 MHz clk into LPC2000, and using PLL - anyone done similar ?
2004-05-10 by Bill Knight
Kris One quick point. The LPC does not like a rail-to-rail input clock. I believe the max level is the same as the core voltage (1.8v) and the minimum is
Re: [lpc2000] Regarding C and assembly file compilation and linking
2004-05-10 by Leon Heller
... From: subhashinimanne To: Sent: Monday, May 10, 2004 10:59 AM Subject: [lpc2000] Regarding C and
How execute ram code after load by isp command
2004-05-10 by Sébastien MARION (UMM)
Hi, I want load a code in ram with isp command and then execute it. I load the code successfull in ram (start adresse 0x40000000) but when I send the Go
Regarding C and assembly file compilation and linking
2004-05-10 by subhashinimanne
What are the sequence of steps required to create executable file from C source file using GNU Compilers. What are the necessary options used for that What are
Re: State driven approach of embedded system programming
2004-05-10 by subhashinimanne
First I need to know two things 1. the concepts of state driven approach 2.Real time operation system is Event driven or state driven? 3.how State driven
Re: State driven approach of embedded system programming
2004-05-10 by subhashinimanne
I need concept of Finite state machine approach. ... listed ... tool ... generating ... cost a
Re: State driven approach of embedded system programming
2004-05-10 by kristianstad2001
Have a look at the site: http://www.quantum-leaps.com/ and Miro Sameks excellent book: Practical Statecharts in C/C++. I highly recommend reading this book and
Re: [lpc2000] Re: injecting an external 4 MHz clk into LPC2000, and using PLL - anyone done similar ?
2004-05-10 by microbit
Hi Charles (and philips_apps ?) , ... The PLL divider can be set for eg. 16, and the prescaler still can be set such that the CCO runs within its specified
RE: [lpc2000] State driven approach of embedded system programming
2004-05-10 by Milos Prokic
It s pretty good. FSM is something that is certainly efficient. it all depends on the scope and size of the project. Personally I have used that approach a lot
State driven approach of embedded system programming
2004-05-10 by subhashinimanne
I need information regarding State driven approach of EMBEDDED SYSTEM PROGRAMMING. Can anybody provide the material for it. Regards M.Subhashini
Re: injecting an external 4 MHz clk into LPC2000, and using PLL - anyone done similar ?
2004-05-10 by embeddedjanitor
In some place in the datasheet, the external xtal is specified as 10 to 25MHz. There might be problems trying to get the PLL running properly off a 4MHz clock.
Re: Help with RX interrupt
2004-05-09 by Frank
Ah, excellent. I was unaware of the need to do the dummy write to VICVectAddr to signal then end. I will be able to test this tomorrow. Thank you very much.
LPC210x RTC
2004-05-08 by Milos Prokic
Hi everyone, I was wondering if anyone has made use of the RTC module. I m not quite clear from the documentation if the RTC can be used during powerdown. The
injecting an external 4 MHz clk into LPC2000, and using PLL - anyone done similar ?
2004-05-08 by microbit
Hi All, This might have come up before I think, but I can t seem to readily find it in my LPC2000 folder. Has anyone ever tried supplying LPC2000 with an
AW: [lpc2000] Help with RX interrupt
2004-05-08 by Sören Rennecke
I think you have forgotten lines like this at the end of Interrupt routine: char dummy = 0; dummy = UARTBT_IIR; //clear Interruptflags by reading this
AW: [lpc2000] Help with RX interrupt
2004-05-08 by Sören Rennecke
I think you have forgotten lines like this at the end of Interrupt routine: char dummy = 0; dummy = UARTBT_IIR; //clear Interruptflags by reading this
Help with RX interrupt
2004-05-08 by Frank
Hello, I am attempting to write an interrupt handler for UART0 of an LPC2106 under GCC 3.3. The handler is invoked for the first byte sent to the UART but is
Re: [lpc2000] New file uploaded to lpc2000
2004-05-08 by Leon Heller
... From: Viron Papadopoulos To: Sent: Wednesday, May 05, 2004 11:46 AM Subject: Re: [lpc2000] New file uploaded
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by James Dabbs
... ..and the secondary JTAG port works! I guess the law of averages is valid after all. SO.. The moral of this story is: (1) if your FLASH ISP software is
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by James Dabbs
OK.. The tant that bypassed the MAX232 had a good solder joint, but the *pad* had cracked during rework (it was originally put on backwards). So, there was
Re: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by microbit
Yes, to actually get back to topic, hmm. Might seem silly, have you checked that you have proper RS232 GND path between host and PC ? That kind of thing would
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by James Dabbs
This board does not use RS232 control lines to reset the chip and set P0.14 Using LPC21ISP.EXE and hacking the source a bit to give me a second to reset the
Re: Using multiple capture pins
2004-05-07 by philips_apps
Hello Bob, Thank you for your input. What you have reported here is a documentation bug . While editing source documents, wrong text was entered. The right
Re: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by microbit
... Some oscillators will have trouble driving a Xtal properly, some will drive a Xtal too hard. Since the LPC2000 oscillator specs output caps as high as 56
Re: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by Robert Adsett
... This seems to be one of those little spoken of issues. Hitex had a section on this in one of their white papers Insider s Guide to Planning 166 Family
Re: [lpc2000] Re: How can I control GPIO port2/3?
2004-05-07 by Bill Knight
Yep. They are really there. I learned from Philips support they forgot to put them in the manual. -Bill On Fri, 07 May 2004 17:00:13 -0000, janesleecn wrote:
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by Bill Knight
James I have an LPC board running with a 14.7456MHz crystal and it is solid for both JTAG and Download. However, even though the crystal is parallel resonant
Re: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by microbit
... I see a table with recommended caps for various load cap. crystals (10, 20, 30 pF), but no recommendation to use _large_ caps ? I didn t mean to contradict
[LPC2129] - MCB2100 & ULINK - Memory Mismach
2004-05-07 by Rodrigo Cesar da Silva Martins
Hi people! I m new on this group... I need help with MCB2100 and ULINK communication. When I try to debug I receive the message Memory mismatch. This happens
Re: Flash Utility Hell..
2004-05-07 by leon_heller
... itself. [deleted] Philips actually recommends using larger value capacitors, there is a table in the user manual on page 39 that suggests values of 58 pF
Re: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by microbit
... It really depends on the Xtal, rather than the clock oscillator itself. Normally you would load the crystal with its actual load capacitance. Ultimately
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by Robert Adsett
... One other thing that occurred to me is if you have an oscillator around (as opposed to a crystal) you might try that to patch that in to help determine if
Re: How can I control GPIO port2/3?
2004-05-07 by janesleecn
Thanks! I already found a header file from KEIL: http://www.keil.com/dd/docs/arm/philips/lpc22xx.h #define IOPIN2 (*((volatile unsigned long *)
Re: LPC2106 and FPGA
2004-05-07 by Frank Sergeant
[re FPGA power consumption] Thank you very much, Leon and Wayne, for the comments and suggestions. I was thinking (vaguely) of building a one-size-fits-most
Re: Flash Utility Hell..
2004-05-07 by leon_heller
... has ... to ... will ... processor ... started ... do ... state. ... the ... chip ... supply ... The oscillator requires quite large value capacitors - try
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by Robert Adsett
... That sounds like sufficient decoupling. Maybe a marginal oscillator circuit. Have you tried monitoring the oscillator while you are doing this? Also
RE: [lpc2000] Re: Flash Utility Hell..
2004-05-07 by James Dabbs
Robert, ... sync ... Well, I gave up at 5 times. The utility failed 5 for 5, and Hyperterminal worked 5 for 5, and I called it a trend. I did hyperterm,