Browse By Tags

  • Note for us

    Hello embedded's Bigboys

    i need for you to confime me if that true 

    if i wrong with any sentence correct to me to spread the knowledge 

    every error  in assembler

    has code 

    like A45 : undefined symbol (pass~2)

    i have two question

    1. first one :tell us about…
  • Outcomes And Impacts, Not Just Activity And Outputs

    In a previous blog, I wrote about the reproducibility crisis in research, how it is impacting the quality of research and public trust in it, and how the community of knowledge can address this crisis. In this blog, I will focus on measures of performance…

  • Writing a Byte over I2C for Slaves without Register Addresses

    I have this function defined for writing a byte to either the LCD 1602 (using the PCF8574 I/O expander), or the SHT21 humidity sensor.  In both cases, it seems like after I write the slave address, I should start transmitting data.  The only issue is, is…

  • SAM D09 SPI Hardware Slave Select

    I am using a SAM D09 uc and want to implement SPI with hardware SS.  I cannot see from the documentation how SS is driven high again.  It states that after every frame the SS is returned to high.  Does this mean every 8-bits.  I need to send around 64 bits…

  • A Low-power Timer Enabling Timed Shutdown of Arm-based Microcontrollers for IoT Applications

    The small form factor of IoT sensor nodes places severe energy constraints on computing platforms. To save energy, duty-cycling helps reduce the power of the sensor node, but this needs an ultra-low-power timer for reliable timed shutdown and wake up. Crystal…

  • STR912FWA47 USB-HID support

    Hi everyone,

    I am trying to use USB-HID with this microcontroller, I saw that there are two libraries for USB-HID, hid.h and hiduser.h, I found these two libraries for several platforms, but I did not find it for this microcontroller.

    Regards

    Alan 

  • migration from ARM to AVR

    I would like to know if there is any tool for migrating from ARM mcu's to Atmel? can any one help me on this topic?

  • Starting with ARM from AVR

    Hello.

    I've been experimenting with AVR alot for 2 years. But I also got a bit of taste ARM, but not alot.

    What board should I start for developing? I want a cheap and a small one. Also I don't want one that needs a programmer like avr's do. …

  • Why the CMSIS DSP Matrix Multiplication outputs 0 after few iterations?

    Hi.

    I am using the CMSIS DSP library for multiplying two matrices on the keil mcb 1800 board using MCU Xpresso IDE. I am using the external SDRAM of 16 MB for storing the result.

    Matrix "xmat" is 1604*8 and omega_transpose is of size 8*100.....Thus the…

  • how to use the 16MB SDRAM on keil MCB 1800?

    I wanted to use the 16MB SDRAM on the keil mcb 1800 board.

    I didn´t find any examples on how to do it?

    Do I have to make any physical connections to use it? 

    It would be great if someone can provide the steps for it.

    Thanks

  • Cannot proccess one or more requested actions.

    Hi,

       When I try to install packs of STM32F407VG, it shows 'Cannot proccess one or more requested actions'.I follow tutorial from udemy.Somebody please help me.I am a begginer.

    Thankyou

  • How to defined board.txt to STM32YYXX Series?

    hi,i am using windows 10.now am trying to sense and  store the values of temperatures in sd card using arduino 1.6.6 ,it shows STM32YYXX chip series is not defined in board.txt.how to solve this problem?is it due to windows 10 is not compatible with this…

  • Choice of Microcontroller for a Wearable

    Trying to develop light weight, small size, wearable for fall detection of elderly, hoping to use IMU and BLE, what is most cutting edge microcontroller for this?

  • ARM microcontrollers in sd cards?

    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…

  • Which arm microcontroller to choose?

    Hello everyone!

    I wanted to learn about the ARM microcontrollers....about the architecture and coding. Which microcontroller should I buy? I read somewhere that I should buy the STM32 discovery board. Please help!

  • ARM with uclinux kernel

    hello everyone,

    Actually i am a beginner in the field of ARM.. and i am trying port a uclinux kernel on any of the ARM controller but the development boards available with me lpc2378,2148,2400 series none of them are having enough flash or ram in it..…

  • What ARM MCU manufacturer has the best documentation?

    I'm designing an ARM MCU board for a cube satellite. This is the first MCU board I've made and good documentation would be very helpful. What ARM manufacturer or ARM series has the best documentation for beginners?

  • Memory management issue with Keil uVision4 and Arm cortex-M4 uC

    Hello, 

    so I was working on Tiva C launch pad and coding using this environment, I noticed that this compiler has major difference from others so I will list some of the problems I faced as questions hoping someone would answer : 

    1- In case I need to use…

  • Programming ARM Controllers?

    Note: This was originally posted on 14th March 2013 at http://forums.arm.com

    As an hobbyist from my engineering i learned about working on 8051, PIC, and AVR microcontrollers. I did programming on these, created programmer boards for these too. I did many…
  • Cortex-m0 interrupt_demo simulation issue

    Hi,

         I am using Cortex-M0 DesignStart Pro. When I simulation intrrupt_demo test case, I found that IRQ[31:0]  always 0, Is this correct?

         I saw the document , the interrupt_demo is Demonstration of interrupt features, but if no interrupt signal input…

  • Arm Development Studio or MDK? Which should you choose?

    The recently launched Arm Development Studio provides a complete software development solution for all Arm devices. It includes as part of the package a license for Keil MDK, the preferred toolchain for users of Arm Cortex-M based microcontrollers. MDK…

  • Creative Technology: A Seven Step Process for Inspiration, Execution, and Reflection

    This article is part of the  Arm Innovator  Program, a series created to highlight the work of key technical leaders who are pushing the boundaries of how Arm architecture can enable next-generation solutions.

    Meet Chelsea Klukas, Co-Founder of MakeFa…

  • Cortex-M从零上手必读

    各位用户大家好,

    ARM的Cortex-M系列处理器是大家最熟悉,最有兴趣的产品。

    今天, ARM Cortex-M 处理器家族已经有8款处理器成员。除此之外,ARM的产品系列还有很多其他的处理器成员。对很多初学者,甚至某些芯片设计经验丰富但是不熟悉ARM系列处理器的设计者来说,也是很容易混淆这些产品的。不同的ARM 处理器有不同的指令集,系统功能和性能。本文会深入展现Cortex-M系列处理器之间的关键区别,以及它们和ARM其他系列处理器的不同。

    为此,我们请到了ARM Cortex-M系列处…

  • Bluetooth World: Wireless connected microcontrollers are changing the rules

    A journalist recently said to me:

    “The trouble with IoT is that it isn't making a visible difference yet.”

    I had to disagree, at least in part. IoT IS making a difference but a key part of that difference isn't visible: The connected microcontroller…

  • Cortex-M7 Continues to Impress at the Embedded World Show in Nuremberg!

    At the recent Embedded World show in Nuremberg running from 24th to 26th Feb 2015 we saw the first MCU offerings from ARM’s silicon partners based on the high performance Cortex-M7, which is the latest member of the ARM Cortex-M processor family.  The…