memory trouble

Started by julien_brazeau in Rabbit-Semi14 years ago 7 replies

Hi , I work on the rabbit 3200 and I need more memory space. I know that I can use xalloc, mem2root root2mem to allocate memory. My ...

Hi , I work on the rabbit 3200 and I need more memory space. I know that I can use xalloc, mem2root root2mem to allocate memory. My trouble is : how can I free that dynamicly memory allocation ? If someone have made fonction or anything usefull, I will appreciate your help. Thanks


UDP and extended memory

Started by Lix N. Paulian in Rabbit-Semi13 years ago

Hi, I have some difficulties to understand how to use UDP in conjunction with extended memory. The basic idea is to spare some root...

Hi, I have some difficulties to understand how to use UDP in conjunction with extended memory. The basic idea is to spare some root memory, as long as it seems the socket library uses extended memory anyhow. As far as I understood it, I have to provide a pointer in extended memory to udp_extopen(); then, when I am writing to the socket, I pass this


Memory Expansion

Started by Daniel T. Chaves in Rabbit-Semi13 years ago

Hi! I'm developing an application for the OP6700 and OP7200 that will require memory for a large program, including a web page and data...

Hi! I'm developing an application for the OP6700 and OP7200 that will require memory for a large program, including a web page and data acquisition. I was wondering, which memory expansion is better? I was checking the SF1000 specificatons. Is it good? I mean, is it easy to write in and read from it? The SF1000 is flash memory, right? Does it have a maximu


Auxiliar memory

Started by castcastus in Rabbit-Semi12 years ago 2 replies

Hi, I have an application that requires to save data to the Rabbit's flash memory around 50 times per day. I know that after a...

Hi, I have an application that requires to save data to the Rabbit's flash memory around 50 times per day. I know that after a "short" while (10,000 times if I recall well), the memory will start to fail. I just need to save around 20 bytes in total each time. Should I add an external aux memory chip (or how else can I read/write


How to allocate an array in extended memory?

Started by hughmorgan72 in Rabbit-Semi9 years ago 1 reply

Hi, I can store and extract memory in extended memory using something like "xdata name3 {" Rules! "};" to define the memory. I want to use...

Hi, I can store and extract memory in extended memory using something like "xdata name3 {" Rules! "};" to define the memory. I want to use this for a datalog, so I need a large abount of space. I could do this by just defining a large string, and then using that space. There must be a better way. Can anyone tell me? For avoidance of doubt, I want to do instead of: xdata name3 {" ...


xalloc and memory question

Started by nin2909 in Rabbit-Semi13 years ago 1 reply

When using the xalloc functions (i.e. xalloc, mem2root, root2mem) to create memory is the memory being allocated out of flash or SRAM? ...

When using the xalloc functions (i.e. xalloc, mem2root, root2mem) to create memory is the memory being allocated out of flash or SRAM?


Out of Root Memory Problem

Started by walker_colt_44 in Rabbit-Semi13 years ago 1 reply

I'm compiling an application for a 3400 module and Dynamic C informs me that I'm out of root memory, and I should try to move things into ...

I'm compiling an application for a 3400 module and Dynamic C informs me that I'm out of root memory, and I should try to move things into extended memory. All of my modules have the directive #memmap xmem in them. So what am I missing? any suggestions? any compile/link settings I might have incorrectly set?


How to determine size of used memory

Started by Anonymous in Rabbit-Semi13 years ago 1 reply

Dears, I have RC3200 module with 512/512 memory, for end user product I want use smaller memory, but how to determine how much I...

Dears, I have RC3200 module with 512/512 memory, for end user product I want use smaller memory, but how to determine how much I need. Sorry for my English Thanks for answer Lukas


Re: M25P32

Started by jjbaumert in Rabbit-Semi10 years ago

Matsss, Did you try defining the SPI_NOREV macro? Joel --- In r...@yahoogroups.com, "Matias Cordero" wrote: > > Hello friends,...

Matsss, Did you try defining the SPI_NOREV macro? Joel --- In r...@yahoogroups.com, "Matias Cordero" wrote: > > Hello friends, how are you? > > > > I'm starting to write a little program for a rcm2200 in order to use a flash > memory called M25P32, this memory is a 4Mbytes one with a serial SPI. It's > made by ST Electronics. Unfortunately, this memory r


Memory Card interface

Started by mmk_tsm in Rabbit-Semi12 years ago

Hi everybody, Has anyone out there a working memory card (CF, SD, MMC, XD etc) interface which includes a file system readable by a PC...

Hi everybody, Has anyone out there a working memory card (CF, SD, MMC, XD etc) interface which includes a file system readable by a PC (PC compatible) that you are willing to share? We would like to use memory cards for program updates in the field, and data (reports etc) transfer to customer's PC. Regards, Michael.


Question on running out of space on Bl2100 memory

Started by Stan in Rabbit-Semi8 years ago

Hi. We have added a lot of code to the BL2100 (Dynamic C 9.25). We have gotten to the point where it seems like it is more than the module can...

Hi. We have added a lot of code to the BL2100 (Dynamic C 9.25). We have gotten to the point where it seems like it is more than the module can accomodate (512K SRAM and 512K flash). We put functions in Xmem and in root. However, what I do not know if the memory is really being used correctly. I do not know if there may be free memory in places but because we do not know how to manage it bet...


How to interface flash memory cards to microcontroller for external memory excess?

Started by partha pabbu in Rabbit-Semi11 years ago 2 replies

hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory...

hi friends, Can you plz gude for this question. How to interface flash memory cards to microcontroller for external memory excess? Thank you chaitanya --------------------------------- Here?s a new way to find what you're looking for - Yahoo! Answers


xalloc maximum allocation

Started by james_r_hebert in Rabbit-Semi12 years ago 1 reply

Im using the rabbit 3700 with 512 flash and 512 sram. Im trying to write to memory and im using the xalloc to specify a certain amount of...

Im using the rabbit 3700 with 512 flash and 512 sram. Im trying to write to memory and im using the xalloc to specify a certain amount of memory to write to, in bytes. How much of the memory can i write to and how do i specify that. can i just do xalloc(512000) ??? is there a way to look at the memory that is in the rabbit board? like what is being written or what has been written. ...


how to interface flash memory card to 8051 microcontroller?

Started by chaitanyakid in Rabbit-Semi11 years ago 1 reply

hi, Iam new to this proffession.I have some doublts to clearify.Plesase kindly show patience to read this mail. I want to interface 8051...

hi, Iam new to this proffession.I have some doublts to clearify.Plesase kindly show patience to read this mail. I want to interface 8051 family microcontrollers to flash memory card.The microtroller which i wamt interface to flash memory card is already interfaced to keypad and LCD display.I have done device driver program for those.Now i want to interface flash memory card for extern...


Is the battery necessrary to retain program in memory.

Started by cfuess in Rabbit-Semi9 years ago 1 reply

Hello All, I first want to thank you all for sharing your knowledge. I've learned so much just by reading the discussions. My question is...

Hello All, I first want to thank you all for sharing your knowledge. I've learned so much just by reading the discussions. My question is about using the RC4400WM in my own circuit. The documentation says you need to have a battery to store values in memory between power cycles, but I couldn't figure out if the program that I upload will stay in memory between cycles or will I have to r...


Help with flash memory

Started by pennshiggie in Rabbit-Semi11 years ago 2 replies

Hi, I am currently trying to solve a problem in a system developed by someone else 3 years ago. The system is new to me and I'd appreciate...

Hi, I am currently trying to solve a problem in a system developed by someone else 3 years ago. The system is new to me and I'd appreciate any help. CPU: Rabbit 2000 Flash: AT29C040 I'm trying to enable the software protection function in the Flash memory. For this I'm trying to download couple of bytes to a specific address in the flash memory. According to the user manual (TN20...


Ram Memory Allocation

Started by William Hookway in Rabbit-Semi13 years ago 2 replies

Hello, I'm using a RCM2250 for data logging. I want to use a contigious ram memory for data storage. When I examine the memory map and the...

Hello, I'm using a RCM2250 for data logging. I want to use a contigious ram memory for data storage. When I examine the memory map and the CPU registers I observe the following: DATASEG = B1 STACKSEG = A9 DEGSIZE=D6 Data is loacted at B1:C3xx to B1:98xx Why when this part has 512K of RAM, the variables are located at the


Use of RCM3300 additional "user-memory"

Started by bradcosta in Rabbit-Semi12 years ago 3 replies

Hi All; I'm trying to get my head around how the memory is arranged and used on the RCM3300, and how I will go about using it to achive my...

Hi All; I'm trying to get my head around how the memory is arranged and used on the RCM3300, and how I will go about using it to achive my goal. Despite reading R3000 user manuals and the tech-notes relating to memory use/mapping I'm still a little bit fuzzy on how to get the RCM3300 doing what I want it to do. **WHAT I AM TRYING TO ACHIEVE**


Additional memory usage compiling ppp.lib with TCPIP

Started by Stefan in Rabbit-Semi12 years ago

Hello, has anyone an idea how many more program memory is nessescary, when i want to use the ppp.lib? I use DC8.61 , Rabbit 3000 with 512k...

Hello, has anyone an idea how many more program memory is nessescary, when i want to use the ppp.lib? I use DC8.61 , Rabbit 3000 with 512k flash /512k SRAM, TCP/IP.lib already in use. I want to buy this lib, but when it needs to much memory, i will disclaim to it. Bye Eckiontour


data memory

Started by hongyang74 in Rabbit-Semi4 years ago

hello, I am using BL4S200 for my project. I need memory for Modbus address. I try to use xalloc or _xalloc to distribute the memory for this...

hello, I am using BL4S200 for my project. I need memory for Modbus address. I try to use xalloc or _xalloc to distribute the memory for this usage. I roughly need 6k byte for modbus address. so however, I will use logic memory address for modbus address, so I need a mapping logic between modbus address and physical address. But I can't assign a physical start address when I use xalloc, does an...