32-bit microcontroller IP. The ARM company which designs the ARM cores doesn't make controllers itself, but licences the IP to other manufacturers. ARM is the leading 32-bit controller and is available from tens of suppliers.
1
vote
1answer
32 views
Faster IO on ARM Cortex-M3 (Sam3x8e) than PIO_SODR and PIO_CODR?
I have a very simple C program that toggles a pin on a Cortex-M3 board (SAM3X8E) with a 84MHz clock speed. I built this using Atmel Studio 6.1.
...
-3
votes
0answers
72 views
Microcontroller, ARM, and FPGA [closed]
I'm going to study Wireless Sensor Network. I'm looking for a good way for understanding micro-controller, ARM and FPGA: i mean books, free technical materials available on the web, like university ...
0
votes
0answers
43 views
Clocking scheme for LAN8720A - Cortex M4
This is regarding a design choice involving LAN8720, specific to clocking schemes.
We are interfacing an ARM cortex M4 (with inbuilt MAC) to the 8720 PHY via RMII in the REFCLKO configuration. In the ...
-2
votes
0answers
56 views
ARM board for DIY GPS [closed]
I have been experimenting with a u-blox 7 module hooked up to my laptop via USB. Now I want to try using it to build a DIY GPS receiver. But I am not sure which ARM board to go with.
Basic specs I am ...
1
vote
1answer
72 views
Using STL with ARM microcontrollers
I have an NXP LPC1769 which features an ARM Cortex M3.
I understand how to program it and have had success building both C and C++ programs for it.
I have some code that I want to port from Windows. ...
1
vote
1answer
79 views
Looking to get started with ARM microcontroller development on Linux [closed]
I am looking to get started in developing for ARM microcontrollers on Linux.
Keep in mind I really enjoy the low level. Right now I have some experience with PIC16F series and 8 bit AVR. This is on ...
0
votes
1answer
50 views
ARM Linux and UBoot - Can I make a read-only MTD writable?
I have several embedded Linux devices installed at customer sites. We have an updated Linux kernel we are prepared to deploy to these devices. The problem is that on these devices, the U-Boot ...
-2
votes
0answers
30 views
ARM cortex M3 display [closed]
Based on what parameters we can decide the display type and resolution that arm cortex M3 chip can support with and without external GPU/HW support?
2
votes
1answer
59 views
Program speed with and without JTAG debugger
I have some custom boards with an ARM processor (marvell78100, armv5 compliant), some SDRAM and some Flash. I'm trying to investigate timings problem with the SDRAM, since it seems the layout was not ...
2
votes
1answer
73 views
Winch or regular servo
I am trying to build a robotic arm and for the base I need a servo with a lot of torque. After browsing through hobbyking's servo selections I noticed that winch servos offer a higher torque for ...
1
vote
2answers
107 views
STM32 ARM header files for use with Eclipse and GCC
I'm a mechatronics (mechanical and electrical) engineering student and want to learn how to program ARM microprocessors. I've used Atmel ATMegas previously. I'm using a mac and being a student I ...
1
vote
1answer
52 views
ARM time measurement
On page 10 in the this article there is an example of time measurement with AVR. Is the same thing possible to do with this?
2
votes
1answer
64 views
Connecting with only JTAG
I've been wanting try out new microcontrollers and microprocessors other than the very mainstream Arduino and similar. So I want to start by making a inexpensive test board with a minimal test of ...
0
votes
0answers
78 views
USB bare metal on ARM Cortex A9
We are envisioning developing a new project using a Cyclone V SoC with a hardcore ARM Cortex A9 dual core processor.
We are seriously considering going bare metal, but one of the main questions right ...
1
vote
3answers
162 views
Consensus on proper wiring for Cortex M 10 Pin JTAG Connector
For the past few weeks I have been working with the new revision of my ARM Cortex M4 design that I posted about a month ago, thanks again to everyone who provided me with much needed guidance and ...
2
votes
0answers
75 views
Best JTAG adapter for ARM Cortex A8?
I am bringing up a new board soon based on TI's AM335x cortex A8 CPU. Development environment is Ubuntu 12.04 running in a VM. Can anyone suggest a good reliable JTAG adapter what will work with ...
3
votes
1answer
91 views
Basic OS definitions and implementations
The Rowley Crossworks package (includes compiler, IDE, debugging interface, etc.) also includes something called the Crossworks Tasking Library (CTL). From their website:
CrossWorks Tasking ...
0
votes
0answers
39 views
Integrating USB Camera on TI Hercules Evaluation Kit (ARM Cortex R4)
I am using a TI Hercules Evaluation Kit, which can act as a USB Host.
Here's the link [http://www.ti.com/tool/tmdxrm48hdk]. It is a ARM Cortex R4 with 8 MB of SDRAM.
I want to use a Logitech Webcam ...
1
vote
1answer
330 views
STM32F4 Discovery demonstation not working anymore
I purchased a STM32F4 Discovery quite recently, and when I initially unboxed the board, I hooked it up to my Mac, and the already programmed in demonstration was working 100%. I was able to view the ...
0
votes
1answer
71 views
Debug ARM processor by USB
I want to be able to add code to this MCU by connecting it to my mac by USB connection. How could I do this?
2
votes
2answers
156 views
Installing a bootloader on an ARM Microcontroller
I have purchased this LPC1788FBD144,551 MCU and this LPC1313FBD48/01,15 MCU and I want to install a bootloader in assembly on them which can call a function in C. How can I install the bootloader on ...
0
votes
2answers
78 views
Booting FreeRTOS on ARM
I am building an embedded device (like a phone) that will run FreeRTOS. I am using an ARM Processor. How can I make my homebrew device boot FreeRTOS? Is there a special type of storage drive that I ...
0
votes
0answers
444 views
Understanding Timers, Counters and Prescaler Registers on the STM32
So I'm trying to set up a very simple periodic interrupt on my STM32VL-Discovery board using the libopencm3 libraries on linux. I've looked at the documentation and I just want to verify with ...
0
votes
4answers
155 views
Readying a New Design, would appreciate som feedback
I designed a Arduino shield compatible board around the NXP LPC4337JBD144. so far I have been unable to get the first revision to program.
In the first design the JTAG header was not setup ...
0
votes
0answers
30 views
beagleboard xm disabling serial console
I have a beagleboard XM, whose serial port is used for serial console, but I need to use it for my application. Hence I tried disabling the console parameter in uEnv.txt but still I am getting the ...
0
votes
1answer
294 views
ARM STM32 simulator like proteous and some good book to start with?
I want to get my hand dirty with ARM programming. I have 8051/PIC16F/PIC18F programing experience. I searched about ARM and find STM32 series cheap. But before buying i want to get handy with it via ...
1
vote
5answers
282 views
What makes intel capable of very high clock rates?
What are the determining factors responsible for why Intel chips can clock at 4Ghz or higher speeds, while other processors such as ARM can't? Is it because Intel's state of the art fabs or is it the ...
0
votes
2answers
88 views
Error in final launch sequence Failed for OpenOCD (Olimex) for ARM (STM32fxx)
I am using openOCD in eclipse for the arm STM32F10x series. After writing the whole code and building everything without error in the program, I am going to debug it and I am getting an error after ...
2
votes
2answers
131 views
Nintendo Game Boy emulation using Cortex M3
I am planning to build a Nintendo Game Boy simulator using ARM Cortex M3 processor.
I have no idea how to interface with the game cassette. Could anyone give some hints about it?
1
vote
1answer
175 views
ARM + FPGA board for industrial Product development [closed]
I am using mini2440 board with external FPGA board, I am looking for one ARM+FPGA board with GPIO support.
As of now I am using mini2440 board with GPIO to control the hardware and sometimes using ...
3
votes
2answers
212 views
Embedded System for a image processing task
I initially posted this on SuperUser, but I suspect, this might be a better place to post this (sorry for the double post!): I'm quite a beginner to embedded systems, but am eager to learn more. I've ...
3
votes
2answers
80 views
Best practicce to refresh data on LCD
I am currently reading value from ADC and displaying on LCD screen. The ADC is supported by DMA. Now my system has 5 menus seen on LCD (Voltage, Current, Resistance, Settings). 3 of them should ...
-2
votes
1answer
79 views
TI ARM with stacked RAM
Do any of the TI ARM SOCs, e.g. OMAP or Da Vinci, have a version with stacked RAM? (e.g. DDR2 or mDDR) For miniature robots, it would be really nice to not need to spend board area on an external RAM ...
0
votes
0answers
131 views
SSTV on an ARM-based board? (Ex: Raspberry Pi)
I'm wondering if there's an open-source SSTV tool (Or even better, a library) that would work on an ARM-based board like the Raspberry Pi.
I've googled a lot with no luck. The available tools (Like ...
-4
votes
2answers
117 views
Idea Hunt, FPGA + ARM Cortex-M3 [closed]
I aim to demonstrate the need for FPGAs as compared to MPUs like (e.g. ARM Cortex-M3 based from TI/ST) in doing processing intensive stuff. I am looking for some help in this regard. I want to show ...
1
vote
1answer
761 views
STM32F4 Discovery + Mac OS X + GCC + OpenOCD + Eclipse
I'm interested in buying an STM32F4 Discovery from ST Microelectronics. I'm using Mac OS X, 10.8 and would like to use a toolchain including
GCC
OpenOCD for debugging
Eclipse IDE / IntelliJ IDEA ...
4
votes
1answer
179 views
Cortex-M4F FPU problems
I'm writing some code for a Texas Instruments Stellaris Launchpad board (a Cortex-M4F, the chip is a LM4F120H5QR). I'm using the IRMP library for infrared decoding, which works fine, as long as I ...
-3
votes
2answers
209 views
Small device that runs Linux [closed]
I want to make a small device that boots Linux off of an SD card for ARM or x86. I am trying to build this from scratch. I downloaded Linux (kernel.org) and compiled it on Ubuntu.
What kind of SD ...
1
vote
2answers
142 views
Looking for an SOC with ARM, DSP and GPU
In past I have used TI DaVinci Chips having an ARM core and a DSP. I am now looking for a chip having a GPU along with ARM and DSP. I know ARM Mali has a GPU core. But is there any chip available ...
0
votes
2answers
154 views
ARM (Cortex-A8) High Speed Bus?
I need to communicate from FPGA to ARM with about 16GBits/s...
Is there a Bus which I can use? Or how to solve this problem?
The FPGA receives data over LVDS. This data schould be post-processed in ...
1
vote
2answers
346 views
Use Raspberry Pi Gpio Header as Memory Mapped Interface
Raspberry Pi is really an interesting device for its support of so many features in such a small and simple formfactor. If the GPIO expansion header can be accessed in the same way as a normal ...
5
votes
3answers
293 views
Is there an open source USB to JTAG circuit I can include in my PCB design?
Im trying to find out if it would be possible to build/include a USB to JTAG circuit on my experiment circuit board I'm designing. My aim is not to reinvent the wheel, but use something that is ...
1
vote
1answer
159 views
Low priced universal USB ARM JTAG that works with a broad range of devices and SDK's?
Can someone recommend a reliable USB JTAG programmer/debugger for ARM processors, mostly Cortex-M3/M4, from a variety of manufactures like ST, TI, Atmel, and NXP, that will work with Keil, IAR, etc. ...
7
votes
2answers
454 views
Soft core Processors VS Hard core Processors
I am doing a study on FPGA interfacing with Microprocessor such as ARM9.
Came across the concept of Soft core and Hard core Processors in my study. May I know what is the comparison between these 2 ...
-1
votes
1answer
117 views
What technology would be ideal for a small rugged display module? [closed]
I am curious what some people here have to say on this since this field seems to be rapidly changing as far as hardware goes lately. Some of these things may be software dependent, but the hardware ...
-5
votes
1answer
176 views
List of companies offering ARM evaluation boards for free/reduced prices (5 - 10$)? [closed]
Does anyone know of any free evaluation boards based on ARM Cortex M or A processors? Or at least for really cheap prices? Are there any who offer free electronics start up kit?
Free LCD samples, ...
2
votes
4answers
174 views
Boundary scan - High speed interfaces
I was given the task to evaluate existing boundary scan systems. At this moment, we are using a simple solution which allows us to define boundary scan vectors which we can check. This is fine for ...
8
votes
1answer
251 views
Is the Cortex M0 really low-power?
I'm using the NXP LPC1100 series CPU, which is their most low-power Cortex M0 offering. However, in the datasheet it states that under the most optimal conditions (sleep-mode + all peripherals ...
0
votes
2answers
590 views
funky values out of ADC on STM32
I've got an STM32 with a straightforward voltage divider bringing in a battery level line to an ADC. The problem is that I'm getting a value that doesn't make a ton of sense to me. According to my ...
1
vote
1answer
171 views
i2c problem on LPC2148
I have problem with getting my LPC2148 to work with i2c devices. LPC is on 3.3v bus and i2c devices are on 5v bus with pull-up of 3k6 ohm on either 3.3v or 5v (jumper selection).
What im experiencing ...
