Hi Matt- If an RTOS is able to run on one particular implementation of a CPU core, such as a Cortex-M3, does it necessarily support other implementations of that core?

Not sure if this is the right place for this or not, so excuse me if I have not "chosen wisely."

I'm a hobbyist working on a project that I MAY productize and try to sell. I have begun with the mbed platform of embedded boards. However I have…

Hi all!

I'm facing a problem with my UART on a STM32F207IG under CMSIS.

When I try to initialize the UART the processor disappears in the HardFault_Handler.

I think the problem is somehow related to the clock settings which I left untouched until now…

I recently bought TM4C123GXL evaluation kit (Texas Instruments). I found 2 microcontrollers on that board. I heard that it is something related to JTAG. But I didn't understand what it is even after browsing about it.

I am interested in learning the ARM system and embedded programming but exclusively use a MAC with OS X.  Does anyone have or know of how to get and IDE set up and running on OS X?

If I have two ARM7TDMI core board and Cortex M3 core board, and I need to choose one of them to use.

What should I consider the different between them and why?

how to configure a I2C in MCB1700 with LPC1758?

I have a MCB1700 board with LPC1758, I am trying to use the I2C on it as a master to run a ultrasonic sensor srf08.

How should I configure the I2C setting on the LPC1758?

Hi All,

I am using UART to receive values and then write those values to SRAM. I am using the Texas Instruments Stellaris LM4F120 board.

For this purpose, I am using the memcpy() function to write the received values over UART to my SRAM base address defined…

There's many references to Debugging a Hard Fault on Cortex-M3 & M4; eg

niallcooling's Developing a Generic Hard Fault handler for Armv7-M

also:

http://supp.iar.com/Support/?Note=23721

https://community.freescale.com/thread/306244 - which…

I'm using IAR Embedded Workbench to debug a Cortex-M0 system interfaced through ST-LINK/V2 SWD. The processor isn't officially supported because it is under development, but the configuration files have been updated with correct data. I'm not sure however…

just help me out interfacing of GPS and GSM with Cortex-M?

Looking for alternates for this instruction.

Hello community members.

I have recently started working with SD card using Microchip ARM based uC SAM4. So far I have managed to initialize the HSMCI interface of SAM4 and SD card is also initialized and has responded with the card capacity and the RCA…

HI,

i'm an ICT professional (so also with an IT background) and very much interested in embedded development (IoT solutions). Until now I mainly did embedded development (mainly ARM m3, m4 microprocessors based development boards: eg Spark Core, TI CC3200…

For example, is it at the beginning of RAM, user or silicon vendor defined?

I'd like to know such that I can identify the stack boundaries in memory and therefore know if I've caused a stack overflow in my code.

My device is an LPC1778, and Im using…

Which ARM Microcontrollers are embedded in current SD Cards? The Motorola 8051 tends to get mentioned in this connection, with occasional, vague references to ARM. So, which specific ARM technologies are used for this purpose, and what kind of embedded…

How to compile in gcc 4.9.3 for CCM SRAM usage?

I'm (trying to) build a device that can receive and play/stream videos wirelessly to an embedded system. I wanted to know what would be the best course to take? If the ARM Cortex-M3 is a viable option for this, do I need a separate video controller…

I don't want to setup the vector table for all my external interrupts. For instance I only need the timer4 IRQhandler at IRQn 30. How can I make an offset in the table? Is this necessary?

Hi the experts,

I'm not sure but i think that chip can realy help myself in my actual projet. i wanna get  precisions about this chip.

In the technical datasheet i can read this :

ARM Cortex M0+ with 4KB flash and 1KB SRAM

• 2x USART
• 1x I2C
• 1x SPI
• 4x…

I have an interest in the M0+ single-cycle IO Bus interface.

It seems that while the TRM describes a 32-bit bus, and a memory map it isn't clear if there is also an address bus to go along with this.

When instantiating do we have an IO address bus,…

Sir,

I am working on Cortex-M4 over serial wire debug protocol, i am able to read IDCODE(0x2ba01477) which is correct as per arm cortex m4 technical reference manual, and i am writing 0x50000000 to CTRLSTAT register to enable CSYSPWRUPREQ and CDBGPWRREQ…

HI,currently i am working on project based on stm32f407 chip.my development work has been stopped since two days as i have stuck in hard fault handler. Please  guide me how to trace the fault ???i tried every possible way i could.but result in nothing…