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Why use RAM mode

Started by topandurangs in LPC200018 years ago 11 replies

Hi all, With MEMMAP we can select between Flash mode & RAM mode. What is the use of RAM mode in ARM7. When we boot the...

Hi all, With MEMMAP we can select between Flash mode & RAM mode. What is the use of RAM mode in ARM7. When we boot the chip in RAM mode can we access FLASH. Thanks in advance Regards, Pandurang S. ------------------------ Yahoo! Groups Sponsor --------------------~--> See what's inside the new Yahoo! Groups email. http://us.click.yahoo.com/2pRQfA/bOaOAA/yQL


Relocating vector table to On Chip RAM

Started by Steven in LPC200019 years ago 3 replies

I am running a self programmed bootloader and the looding process works great. I usually use a Keil ARM7 compiler but for the project I am...

I am running a self programmed bootloader and the looding process works great. I usually use a Keil ARM7 compiler but for the project I am working on I am forced to use the ARM GCC compiler. Keil does a greate job of relocating the vector table for me but I can't get the vector table to relocate to RAM Is this a valid method to relocate the


LPC23xx timer 1 interrupt IRQ mode sample code (Keil Simulator)

Started by Javeed Shariff in LPC200014 years ago 3 replies

Hi, I'm using keil uvision4 simulator for learning ARM7 LPC23xx programming and get familiar with peripherals. Could someone help me by...

Hi, I'm using keil uvision4 simulator for learning ARM7 LPC23xx programming and get familiar with peripherals. Could someone help me by sending sample project file to generate timer1 interrupt (IRQ mode). I tried the code bundle on the NXP site for 23xx family but was of not much help. Awaiting for favorable response. Regards, Javeed


LPC2468 ethernet problem

Started by bqba...@yahoo.com in LPC200015 years ago 7 replies

Hi all, I am doing a ARM7 board using LPC2468 (NXP) and DP83848C PHY (National). After layout and assembly the board, I am testing the board...

Hi all, I am doing a ARM7 board using LPC2468 (NXP) and DP83848C PHY (National). After layout and assembly the board, I am testing the board and face a strange problem. That is: The EMAC can not receive frame with start byte equal 0x00. I send a frame with all the byte 0x00 to PC and I can capture it with ethereal. From PC, I do a ping to the board. It can see the ARP request (with start byte ...


Ogg / Vorbis decoder on LPC2xxx ?

Started by tcerny2001 in LPC200015 years ago 2 replies

Hi All, I want to get Ogg / Vorbis decoder running on LPC2xxx (preferably LPC2368) but I can't find any good information on (successful) port...

Hi All, I want to get Ogg / Vorbis decoder running on LPC2xxx (preferably LPC2368) but I can't find any good information on (successful) port of Ogg / Vorbis decoder on ARM7 or Cortex-M3 core. I am just aware that the size of embedded RAM may be an issue since Ogg / Vorbis needs bigger RAM for decoding than MP3 format, for example. I prefer to get the decoder running in the internal S...


Lauterbach debugger for LPC 24xx

Started by Sanjeeva Kumar Kogganooru in LPC200017 years ago 4 replies

Hi all I have a query regarding Lauterbach debuggers. I have been using Lauterbach debugger(Lauterbach Power debug with BDM inteface) for...

Hi all I have a query regarding Lauterbach debuggers. I have been using Lauterbach debugger(Lauterbach Power debug with BDM inteface) for Motorola S12 family. I am now working with LPC 24XX series for which the lauterbach has the support. My query is whether the power debug module can be resued for ARM architecture as it is by changing to JTAG cable for ARM7 family. Has anybody been using...


MCB2140--------MAX563--------------MC35i gsm mdem .....Interface problem

Started by bhimanipankaj in LPC200018 years ago

Dear Friends. I am facing a problem with MC35i GSM modem from Siemens. I need to connect the MC35i GSM modem with my ARM7 based ...

Dear Friends. I am facing a problem with MC35i GSM modem from Siemens. I need to connect the MC35i GSM modem with my ARM7 based microcontroller which is LPC2148. I have one evaluation board of LPC2148 which is MCB2140 from KEIL. I need to connect the MODEM to one COM port which is connected with two wires only Tx and Rx using MAX563 as


Free ARM IDE Software

Started by somboon sopee in LPC200017 years ago 20 replies

Why ARM co,ltd. not develop free IDE Software for interface with ARM GCC same ( AVRStudio + AVR GCC (Atmel) , MPLAB (Microchip) ). I think the...

Why ARM co,ltd. not develop free IDE Software for interface with ARM GCC same ( AVRStudio + AVR GCC (Atmel) , MPLAB (Microchip) ). I think the ARM Developers' will grow more than this time. Best Regards N-Link ARM JTAG & ARM7 Boards -------------------------------------------------- http://www.friendlyarm.com http://www.micro4you.com http://stores.ebay.com/Micro4you-Store


LPC2148: How to write number of 100 byes of data in flash sector

Started by Wool Gather in LPC200013 years ago 2 replies

Hi every one, I am new with this ARM7 uC. I have been gone through Datasheet of LPC2148 for writing data in to flash. I have couple of...

Hi every one, I am new with this ARM7 uC. I have been gone through Datasheet of LPC2148 for writing data in to flash. I have couple of question about how to write / re- write data on sectors. Example: If i would like to write 100 byte of data to sector number 8, the size of sector 8 is 32 KByte. I am getting data from UART 0 after every five minutes and storing that data in to globa...


x86 to FPGA to ARM7 (lpc2468) wishbone communication, shared memory concept

Started by djam...@gmail.com in LPC200014 years ago 1 reply

Hello Everyone. well i have designed a system that contains -- altera cyclone 3 FPGA, with 50M clock -- altera epcs16 Flash (configuration...

Hello Everyone. well i have designed a system that contains -- altera cyclone 3 FPGA, with 50M clock -- altera epcs16 Flash (configuration device for cyclone3) -- an LPC2468 ARM processor (running uLinux), -- a 16M Synchronous DRAM (connected to FPGA and ARM) -- rest the design has ethernet, usb memory device connector, FTDI interface, JTAG interface, ETXexpress Connector for connection to...


Force IAR to use char inside of int for convert %d in sscanf

Started by Nader in LPC200016 years ago 2 replies

I want use something like this: char TempIP[4]; if(sscanf(&console_str[2+1],"d.%d.d.%d",&TempIP[0],&TempIP[4],&TempIP[8],&TempIP[12]) ==...

I want use something like this: char TempIP[4]; if(sscanf(&console_str[2+1],"d.%d.d.%d",&TempIP[0],&TempIP[4],&TempIP[8],&TempIP[12]) == 4){ // do something } but IAR use only int to conver %d. In 8 bit cpu it work well but in ARM7 core should use extera RAM. is there any way to force IAR to use char inside of int for convert %d in sscanf? Thanks. ------------------------------...



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