getting started with SAM3U-EK

Started by Rafael in AT91SAM ARM9 years ago

Hi people, I'm starting in the study of Arm-Cortex processors and I choose the ATMEL SAM3U microcontroler. I have a lot of experience with...

Hi people, I'm starting in the study of Arm-Cortex processors and I choose the ATMEL SAM3U microcontroler. I have a lot of experience with others microcontrolers (aka PIC24, 8051, Z80, 68000, AVR) ans now I'm looking for ARM Cortex microcontrolers. I already read a lot of documentations, tutorials and I got started to try to run some examples and tests in SAM3U-EK board. I started with ...


Returning from ISR erases my local variables. What am I doing wrong?

Started by "evan.miller530" in AT91SAM ARM9 years ago 1 reply

I'm using an at91sam7s256 combined with the yagarto/eclipse gnu toolchain, with an ISR setup based on the PIT. After the first interrupt fires,...

I'm using an at91sam7s256 combined with the yagarto/eclipse gnu toolchain, with an ISR setup based on the PIT. After the first interrupt fires, it enters the ISR, executes a few lines of code, then returns to the main loop. The problem I seem to be having is that all local variables/pointers have been reverted back to their reset values (0xAAAA....) once I've returned from the ISR, and the ISR...


SAM-BA isn't modifying values, what am I doing wrong here

Started by "evan.miller530" in AT91SAM ARM9 years ago 3 replies

I have recently installed AT91-ISP v1.12, and am trying to modify memory on my AT91SAM7S256 using SAM-BA. The problem I am having is after...

I have recently installed AT91-ISP v1.12, and am trying to modify memory on my AT91SAM7S256 using SAM-BA. The problem I am having is after connecting, SAM-BA doesn't modify memory values in the internal flash or ram. When I send a file, changes are not made, and similarly when I try to manually change a single memory value, the changes are not made. I have followed the instructions for loading ...


FreeRTOS help needed

Started by sAm in AT91SAM ARM9 years ago 2 replies

Hi guys.. i am working on FreeRTOS kernel and stuck in creating my first task.. i am not sure that it is the right place to get help but i know...

Hi guys.. i am working on FreeRTOS kernel and stuck in creating my first task.. i am not sure that it is the right place to get help but i know for sure that u guys know much about FreeRTOS. i have modified the port of Microblaze to fit my architecture for AEMB. So basically my kernel now has no hardware setup and i want to kick my tasks using the cooperative mode.. so far i have already mad...


help connecting STM32-P107 with ARM-USB-Tiny-H

Started by Richard Leenheer in AT91SAM ARM9 years ago 1 reply

hello, I am kinda new with using development boards, and the last couple of days I am trying to play with the device I bought. But I am not able...

hello, I am kinda new with using development boards, and the last couple of days I am trying to play with the device I bought. But I am not able to acually program something in the device. I am working with Windows XP, SP3, 32bit The device I bought was from Olimex, : STM32-P107 with the JTAG cable: ARM-USB-Tiny-H I followed the instructions in the manual on the cd. It installes Eclipse...


ISI Image Sensor, anyone working on Linux code?

Started by Tobias Weber in AT91SAM ARM9 years ago 3 replies

Hi all, I got a fine running 2.6.30 on my AT91SAm9G45 dev board here (Embest) and would like to use the Image Sensor Interface. So far, I was...

Hi all, I got a fine running 2.6.30 on my AT91SAm9G45 dev board here (Embest) and would like to use the Image Sensor Interface. So far, I was unable to find any linux support for this peripheral. Is there something that could be tested (even alpha-code is welcome) or is someone already working on an implementation of this? I would really help on this, but I never worked on kernel driv...


Flash Programming

Started by rbdi...@gmail.com in AT91SAM ARM10 years ago 15 replies

Hi I am very new to microcontrollers. Now my assignment is to write a program to store data on the flash memory of the controller. I am using...

Hi I am very new to microcontrollers. Now my assignment is to write a program to store data on the flash memory of the controller. I am using AT91SAM7s128. Can any one pls send me the code. ------------------------------------


Write to SerialFlash via SAM-BA

Started by "lukas.jeindl" in AT91SAM ARM10 years ago

Hi everyone! I would like to use a SerialFlash (AT25/AT26) for my bootsrap as well as for u-boot storage. The SAM-BA applets are able to...

Hi everyone! I would like to use a SerialFlash (AT25/AT26) for my bootsrap as well as for u-boot storage. The SAM-BA applets are able to identify, enable and erase the flash I'm using now (M25P16-VMP6G). Even sending of the bootstrap works - meaning it is executed after reset and therefore obviously transferred in some way. But while transferring any data, the SAM-BA freezes and has to be...


AT91SAM7S256...

Started by rushikesh in AT91SAM ARM10 years ago 3 replies

Hello, I am new to this controller. Can anybody suggest which tool chain to select for AT91SAM7S256 with which its easy to start with that...

Hello, I am new to this controller. Can anybody suggest which tool chain to select for AT91SAM7S256 with which its easy to start with that is set of IDE+Compiler+Debugger. I need .a79 as my output file extention.?? thank you, ------------------------------------


problem in USB Core Stack for AT91sam7SE-EK

Started by wuqingwh in AT91SAM ARM10 years ago 2 replies

Hello, I am using the USB Framework from Atmel to develop our product. I imported all source code in usb-device-core-project-at91sam7se-ek-gnu.zip...

Hello, I am using the USB Framework from Atmel to develop our product. I imported all source code in usb-device-core-project-at91sam7se-ek-gnu.zip to CrossWorks IDE and tried to debug the code. But I found the deviceState never go up to "USBD_STATE_ADDRESS". After the deviceState becomes "USBD_STATE_DEFAULT" and USBDCallbacks_Reset() is called, the deviceState goes back to 0, which is suspend, and...


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