1
vote
3answers
86 views
LPC2131 problem reading IO pins
I need to read a value from a DIP switch. It is connected to ports P1.16 till P1.21. I use following code:
to initialize:
#define PORT_ADDRESS 0x003F0000
#def …
0
votes
0answers
16 views
how to enable and configure USB OTG for device mode on iMX31 Litekit ?
I need to configure USB OTG on iMX31 for device mode. We need a raw channel between the host and target and usb seems to be the best suited. However I haven't been able to correctl …
4
votes
2answers
90 views
About Code Density and its definition.
Hi there, I have a conceptual question: What means "high" code density? and why is it so important?
Thanks :)
1
vote
1answer
118 views
How can I set up an SPI interface between an LPC2132 ARM and a Cyclone FPGA?
I am trying to make an ARM LPC2132 chip and a Altera Cyclone FPGA communicate using the SPI protocol. Specifically, I have the Saxo-L board from KNJN, which has the signals pre-wi …
1
vote
2answers
47 views
Where can I find the in-depth LPC2132 datasheet?
I have searched high and low on Google for the user manual about the LPC2132 ARM chip. So far, all I have come up with is the ARM7TDMI manual and a short (41 pages) overview of the …
2
votes
6answers
347 views
ARM watchdog reset
I have an MP3 development board I picked up from sparkfun that runs off the LPC2148 ARM processor. In looking through the code, I see a function to force a watchdog reset. My quest …
7
votes
6answers
909 views
AVR vs ARM vs Others
Does anyone even care about what you're developing on? I just wonder because there is such a strong contingent for AVRs in the Arduino family. I understand that they are the offici …
5
votes
6answers
703 views
ARM Cortex-M3 development tools ?
I am planning to migrate to the NXP Cortex M3 architecture and I'm a little lost between the existant development tools.
Keil is expensive and I don't know if it's worth it.
Anyon …
3
votes
5answers
337 views
Beagleboard alternatives?
I'd like to buy a Beagleboard, but I'd like to know if there are best alternatives, and what they are.
4
votes
3answers
138 views
Is it possible to reset NXP LPC2100 microcontroller from code
I'm curious? A watchdog timer could do this, but I would like to do it manually.
5
votes
4answers
263 views
What is a good choice for an ARM to interface with external memory?
I just completed a project using the LPC2132 chip, but ran into problems with using up the whole 64kb of RAM.
For my next project, I'd like to use something that can reference an …
4
votes
3answers
219 views
Building a circuit with LPC1343
Have people here used the LPC1343 Cortex-M3 chip?
I've built a few small circuits with PIC microcontrollers before but now I'm using an LPC1243 Cortex-3/ARM. I've been using an LP …
7
votes
4answers
385 views
Cheapest ARM with an MMU
What is the cheapest ARM processor with an MMU so I don't have to use uCLinux?
Bonus for non-bga and integrated RAM/Flash
2
votes
4answers
62 views
What configuration should I use for a system that includes an ARM and an FPGA?
I have a design that uses an Altera Cyclone FPGA to implement a Physically Unclonable Function (PUF) and an ARM device to do cryptographic work and I/O with the PUF. The PUF is ver …
1
vote
2answers
227 views
How to configure an ARM GPIO port (STR9) to an alternate function?
Because I am new to programming on microcontrollers coming from the C++ world, I have been studying on getting code running on a microcontroller board to work with many inputs and …
