I notice that the ram capacity (ignore program flash for now, but it tends to basically be proportionate) of microcontrollers seems to...

I notice that the ram capacity (ignore program flash for now, but it tends to basically be proportionate) of microcontrollers seems to grow fairly continuously (say in 2x jumps) from very small (a dozen or so bytes in an 8 bitter, lots of MSP430's in the 128 to 1k byte range, Cortex M0's with 4k, etc.), up to about 32k (Cortex M4). Above that there are a few chips with 64k or 128k, that are ...

Based on ARM Cortex A53 Octa Core, 64-bit desktop-class architecture, with world leading 28nm manufacturing technique, S5P6818 brings a new level...

Based on ARM Cortex A53 Octa Core, 64-bit desktop-class architecture, with world leading 28nm manufacturing technique, S5P6818 brings a new level of performance and efficiency ever. The most advanced and powerful Cortex A53 Octa Core applies to the needed peripheral interfaces, optimized 3D engine and multimedia processor. S5P6818 is the first choice which can be able to meet the cost-effectivene...

Based on ARM Cortex A53 Octa Core, 64-bit desktop-class architecture, with world leading 28nm manufacturing technique, S5P6818 brings a new level...

Based on ARM Cortex A53 Octa Core, 64-bit desktop-class architecture, with world leading 28nm manufacturing technique, S5P6818 brings a new level of performance and efficiency ever. The most advanced and powerful Cortex A53 Octa Core applies to the needed peripheral interfaces, optimized 3D engine and multimedia processor. S5P6818 is the first choice which can be able to meet the cost-effectivene...

I sure would like to hear opinions on the ARM Cortex M3 micro. What is the cheapest dev. board for this chip or, a schematic. Anyone have...

I sure would like to hear opinions on the ARM Cortex M3 micro. What is the cheapest dev. board for this chip or, a schematic. Anyone have Altium or Keil for sale. As always, that you for your time and input. Joe

I am approaching to the ARM world and I develop applications for Cortex M3 LPC17xx and in the future also LPC11xx M0 . I have to develop in C...

I am approaching to the ARM world and I develop applications for Cortex M3 LPC17xx and in the future also LPC11xx M0 . I have to develop in C with the libraries support. I'm evaluating development tools to use and would like some advice from those already developed in this field, considering that my application would probably exceed 32K and not want to risk it. I tried the evaluation vers...

I want to find low cost Cortex-M3 develop tool under $150 for learning purpose. It better has ethernet interface and ADC.

I want to find low cost Cortex-M3 develop tool under $150 for learning purpose. It better has ethernet interface and ADC.

I want to understand impact of buses/wait states on Cortex-M preformance. It seems that documentation about this seem to be scatterd or...

I want to understand impact of buses/wait states on Cortex-M preformance. It seems that documentation about this seem to be scatterd or unavailable (I would appreciate pointers to appropriate documentation). I was unable to find answers in documentation so I did some testing. Below part of my results. I run tests on STM32F030, STM32F103, STM32F407, STM32411 and two chinese clones, namly ...

Hi, I am looking at using a Cortex M3 based mcu for an application requiring a very fast wakeup time and low power during that...

Hi, I am looking at using a Cortex M3 based mcu for an application requiring a very fast wakeup time and low power during that sleep mode. Is it possible for the M3 to wake up in less than 300us given that whatever sleep mode it is in has to draw less than 300uA? thanks, Mike.

I am, apparently, incompetent at reading data sheets. At least when they get up to several hundred pages. Do Cortex M4 parts deal with...

I am, apparently, incompetent at reading data sheets. At least when they get up to several hundred pages. Do Cortex M4 parts deal with 64-bit floating point in hardware, or just 32-bit? Thanks... -- Tim Wescott Wescott Design Services http://www.wescottdesign.com

Does anyone have recommendations for Cortex M3/M4 microcontrollers with a bootloader in ROM? We use a number of Freescale Kinetis devices,...

Does anyone have recommendations for Cortex M3/M4 microcontrollers with a bootloader in ROM? We use a number of Freescale Kinetis devices, but there is no ROM bootloader - programming is through either JTAG or the EZ-Port (basically treating the chip like an SPI flash device). We have an application where a UART-based bootloader would be very useful, and having it in ROM would save a lot of...

Does anyone know of either a free or commerical RTOS that supports ARM Cortex M1? I'm finding that some vendor's websites claiming support are...

Does anyone know of either a free or commerical RTOS that supports ARM Cortex M1? I'm finding that some vendor's websites claiming support are inaccurate. Looking for RTOS with filesystem and drivers to support a SoC implentation in an Actel FPGA... Any recommendations? Thanks, Bo --------------= Posted using GrabIt =---------------- ------= Binary Usenet downloading made easy =...

I'm stuck with a stupid issue on a Cortex-M3 (LPC1788 by NXP). It's a classical issue that happens randomly and in different ways when the...

I'm stuck with a stupid issue on a Cortex-M3 (LPC1788 by NXP). It's a classical issue that happens randomly and in different ways when the code is slightly changed, so it's very difficult to debug. MCUXpresso (IDE from NXP) and Ozone (a software from Segger) says that IBUSERR and FORCED are set when HardFault exception occurs. I understand it is related to a program counter with a wron...

I've finally been considering a project to use either a Cortex-M3 or a PIC32 processor and I've a technical question unrelated to any "business...

I've finally been considering a project to use either a Cortex-M3 or a PIC32 processor and I've a technical question unrelated to any "business issues" between these options -- the divide instruction operation. Both of these cores include one but I'm interested in any remarkable technical details between them, including cycle counts but not limited to that (load-store time is fair game.) ...

We have developed a board which has an ARM Cortex-M3 micro in the Arduino format. This is definitely not an official board, and by using a...

We have developed a board which has an ARM Cortex-M3 micro in the Arduino format. This is definitely not an official board, and by using a 72MHz 32-bit processor with 512KByte of Flash we guaranteed there would be a few changes from the 10MHz Atmel ATmega168 in the Arduino... But we tried to keep as close as possible to the Arduino spirit. At least the connectors are in the same places ...

I'm working on a Cortex-M4 MCU and using FreeRTOS. One task: uint32_t wait_period; while(1) { // make some things ...

I'm working on a Cortex-M4 MCU and using FreeRTOS. One task: uint32_t wait_period; while(1) { // make some things vTaskDelay(pdMS_TO_TICKS(wait_period)); } The following function can be called from another task: void set_waiting_period(uint32_t new_period) { wait_period = new_period; } In this case, is it needed to protect the access of the shared variable wait_pe...

Hi We are working on a new product and we are contemplating using a Virtual Machine, running the Microsoft .Net Micro Framework It seems it...

Hi We are working on a new product and we are contemplating using a Virtual Machine, running the Microsoft .Net Micro Framework It seems it could be running on a STM32F105 (Cortex M3 device) with 256kB Flash and 64kB RAM. We do not need it to run very fast, we just need the ability to be relatively processor independent and to gain a higher abstraction level if possible, reducing deve...

See: http://www.atmel.com/dyn/corporate/view_detail.asp?FileName=AT91SAM3U_6_1.html Naturally there is a FreeRTOS demo...

See: http://www.atmel.com/dyn/corporate/view_detail.asp?FileName=AT91SAM3U_6_1.html Naturally there is a FreeRTOS demo ready: http://www.freertos.org/Free-RTOS-for-Atmel-SAM3-Cortex-M3.html Also there is a new LPC1766 demo: http://www.freertos.org/Free-RTOS-For-NXP-Cortex-M3-LPC17xx.html -- Regards, Richard. + http://www.FreeRTOS.org Designed for Microcontrollers. More th...

Is anyone out there doing development for the ARM Cortex (specifically the m3) with the Gnu tools? Are you using the CodeSourcery set, or are...

Is anyone out there doing development for the ARM Cortex (specifically the m3) with the Gnu tools? Are you using the CodeSourcery set, or are you building your own? If so, how are things going? There seems to be a welter of "how to" pages on this, but nearly all of them seem to be as old as the hills. My spare-time job right now is bringing up a set of tools that'll work on Linux a...

Hi, Can anyone tell me the pros and cons of gcc vs the arm-cc compiler for ARM Cortex M3 development? I understand that the ARM compiler...

Hi, Can anyone tell me the pros and cons of gcc vs the arm-cc compiler for ARM Cortex M3 development? I understand that the ARM compiler always used to be said to give smaller code size with the downside that it cost a bit more but can anyone tell me whether that is still true in 2012 ? How do they compare on execution speed ? My application is power sensitive and increased execution ...

Hi There, I'm trying to get a gnu toolchain for ARM Cortex-M3 established, so far unsuccesful. I got instructions from ...

Hi There, I'm trying to get a gnu toolchain for ARM Cortex-M3 established, so far unsuccesful. I got instructions from http://www.gnuarm.com/ [on the bottom] - I setup cygwin and installed all the required things - so I thought... However, at step 3 building the compiler I get: cd /usr/src/binutils-2.22.51-1 && autogen Makefile.def /usr/bin/sh: autogen: command not found make: *** [/usr...