Greetings, When a program is too big to fit on a microcontoller internal memroy, external memory has to be used. Thats when a bootloader is...

Greetings, When a program is too big to fit on a microcontoller internal memroy, external memory has to be used. Thats when a bootloader is needed. Does a bootloader go hand in hand with an RTOS or is it sometimes used to without one? Also, what kind of memory is typically used in this setting, and how is it updated? Thank you for your input. -- a

Is it possible that embedded system doesn't have flash memory? If we use flash memory in embedded system, then we don't need to use ROM,...

Is it possible that embedded system doesn't have flash memory? If we use flash memory in embedded system, then we don't need to use ROM, or both? My understanding is that flash memory is similar to ROM, that stores permanent data like boot up instructions?? Is that correct? Please advice. thanks...

I'm writing a software for microblaze soft processor (Spartan 3E Starter Kit) and I have a few questions regarding the using of memory. The...

I'm writing a software for microblaze soft processor (Spartan 3E Starter Kit) and I have a few questions regarding the using of memory. The first question is where my code is running? The starter kit has an external 64MB DDR memory and internal local memory (Use BRAM). When I download the bit stream to the FPGA, where is the program running? It seems it is running in the local memory. ...

I am trying to read an address from a memory location and then write into that memory location. i.e. unsigned long * mem_pointer =...

I am trying to read an address from a memory location and then write into that memory location. i.e. unsigned long * mem_pointer = 0x93700020; //Valid memory location on my hardware unsigned long mem_value = *mem_pointer; //Retrieve the value (another memory location) from //the pointer The question is - How do i

Greetings, What is a good way to control the power to a memory module. One of the memory modules (4MB FIFO) that I intend to use consumes...

Greetings, What is a good way to control the power to a memory module. One of the memory modules (4MB FIFO) that I intend to use consumes 14mA in standby mode, which is one order of magnitude of what I want. Is there a way to turn off power to components and use something in the order of uA instead of mA when not in use? Thanks, A

Hello, is it possible to use io on a z80 to select different memory chips. Something like bankswitching, using an out command to select a...

Hello, is it possible to use io on a z80 to select different memory chips. Something like bankswitching, using an out command to select a memory chip? Greetings Frank

Hi hello, Maybe it's a stupid question, but how can I read/write external memory with a msp430. I have to store something like 15kB (not...

Hi hello, Maybe it's a stupid question, but how can I read/write external memory with a msp430. I have to store something like 15kB (not much). I thought about FIFO memory, because I think that will be the easiest way. I hope you can help me, DenCop PS sorry for my bad English

Hello there, one of new members around here. I've got a problem while i try to retrieve/pass over some values to memory. I use EDK 9.1 and a...

Hello there, one of new members around here. I've got a problem while i try to retrieve/pass over some values to memory. I use EDK 9.1 and a system of microblaze, opb bus and opb bram memory. I try to retrieve some values from memory through a vhdl testbench, which is port mapped in the PORT B of Bram (by making Bram's PORT B external) and then write back these contents in other blocks - a...

With Gartner's Business Intelligence group listing In-Memory analytics at the top of their recommended Business Intelligence requirements...

With Gartner's Business Intelligence group listing In-Memory analytics at the top of their recommended Business Intelligence requirements for enterprise; No wonder In-memory has become a trending topic in BI and a new addition to executive shopping lists. We thought we=92d share with you our top 10 technical requirements, you should be asking from an in-memory analytics vendor: [10] Be o...

Hi, I am faced with a problem of not being able to effectively debug what i am doing. Is it possible to save debug information at locations...

Hi, I am faced with a problem of not being able to effectively debug what i am doing. Is it possible to save debug information at locations in memory/flash and then examine them later ? Instead of say printing to the console, printing to locations in memory. Thanks - Nived --------------------------------------- Posted through http://www.EmbeddedRelated.com

need to know how to write data into external flash memory(offchip).using MCU MC9S12A128B and the external flash memory chip is M29F040B.Is there...

need to know how to write data into external flash memory(offchip).using MCU MC9S12A128B and the external flash memory chip is M29F040B.Is there any special code to be sent to the external flash memory.Using a cpld chip number being CY37128P84 125 JC which is used for the selecting the external flash chip.Also using metrowerks code warrior and BDM Multilink. Thanks for any help, Ranjita...

I have a board that mounts STM32L4R9 MCU. I'm interested in the native USB bootloader, the one that resides in system memory. The BOOT0 pin...

I have a board that mounts STM32L4R9 MCU. I'm interested in the native USB bootloader, the one that resides in system memory. The BOOT0 pin can be pulled-down or pulled-up by resistors, but those resistors can't be moved (soldered/unsoldered) at every upgrade. What I'd like to do is: - at startup, if a USB cable is connected, system memory should be selected as boot memory area - a...

Hi, I've 3 questions about my Infineon TriCore microcontroller which is described by Infineon as "32-bit microcontroller-DSP...

Hi, I've 3 questions about my Infineon TriCore microcontroller which is described by Infineon as "32-bit microcontroller-DSP architecture optimized for real-time embedded systems". According to the manual, the DSP has the following memories: · Data Memory Unit (DMU) with ­ 64 Kbyte of Data Memory (SRAM) ­ 16 Kbyte of Stand-by Data Memory (SBRAM) · Program Memory Unit (PMU) ...

Hello, I am working on embedded application development for ARM926EJ processor based SoC. As per my product specification, there are 2 SDRAM...

Hello, I am working on embedded application development for ARM926EJ processor based SoC. As per my product specification, there are 2 SDRAM memory banks which can address 128 MB SDRAM each. So the there could be overall 256MB SDRAM in the system. The board that I have has 128 MB of SDRAM as per the specification. So I suppose there is only one memory bank used with 128 MB memory. I ...

Hi, I got some special tricks for the Linker Scripts for a non-contiguous memory map in which i can distribute code or data among more than one...

Hi, I got some special tricks for the Linker Scripts for a non-contiguous memory map in which i can distribute code or data among more than one memory area. MEMORY { PR_MEM1: origin = 0a000h, length = 0500h; PR_MEM2: origin = 0d000h, length = 0300h; } SECTIONS { .text_1: { test1.obj(.text), test2.obj(.text), test3.obj(.text) } > PR_MEM1 .text_2:

The memory allocation issue in embedded systems is usually critical.. How can one manage that? 1. Via 'new' char* p = new (nothrow) char...

The memory allocation issue in embedded systems is usually critical.. How can one manage that? 1. Via 'new' char* p = new (nothrow) char [SOME_SIZE]; if (p == 0) { // He we know that it is impossible to allocate the requested memory // We can do something relevant. } 2. But how to manage memory allocation in containers for embedded systems? For instance, vector v; F

When allocating a chunk of memory with malloc(), there is always some memory overhead associated with the heap control structures. Also, the...

When allocating a chunk of memory with malloc(), there is always some memory overhead associated with the heap control structures. Also, the minimum memory allocation unit is typically larger then one byte. Because of that, sometimes it could be more efficient to allocate a static data of the maximum size rather then a dynamic data of the required size. I understand that those thin...

Hello, I don't have a particular project in mind, but it seems like having 512+MB of memory at my disposal for microcontroller projects would...

Hello, I don't have a particular project in mind, but it seems like having 512+MB of memory at my disposal for microcontroller projects would be quite amazing. From a few of the posts I've read, and the limited specs I could find, it seems like Secure Digital (SD) memory cards allow for an SPI interface (serial) and run anywhere from 0-25Mhz. (I've interfaced to CompactFlash cards and Car...

I need to pre-estimate required memory of our project I have experience in device driver programming of PocketPC but I have never done things...

I need to pre-estimate required memory of our project I have experience in device driver programming of PocketPC but I have never done things like this before I am using ST STR7 32bit arm7 mcu without OS, but our final goal is using OS my company has developed. I think currently only method by which I can assume required memory is just counting byte. Then what I add to estimate required mem...

Greetings. Can I write memory locations with GDB? I have been looking through Debugging With GDB and a few tutorials but can't find anything -...

Greetings. Can I write memory locations with GDB? I have been looking through Debugging With GDB and a few tutorials but can't find anything - only how to read memory and write to variables. I am using GDB 5.1.1 for TI MSP430 in text mode but I expect the commands would be the same as for native debugging. Help appreciated. Joseph Casey.