I2C ?

Started by Sutton Mehaffey in LPC200012 years ago

I have an I2C question that has been bugging me for a month now. Any time I issue a SLA+R to read from a particular address from any chip, I...

I have an I2C question that has been bugging me for a month now. Any time I issue a SLA+R to read from a particular address from any chip, I have to wait one extra cycle before the data is ready on the bus. This is both for an EPSON RTC and an ATMEL RAM chip. Is this normal operation for those who have done I2C? I can't find in any datasheet that you must wait this extra cycle, but I have...


LPC1114 - SPI Clock speed

Started by nico...@gmail.com in LPC20008 years ago 5 replies

Hello all! I'm having some problems setting up ssp clock speed on a LPC1114. I want to set it to 15 MHz to communicate with an ATMEL AT45DB011D...

Hello all! I'm having some problems setting up ssp clock speed on a LPC1114. I want to set it to 15 MHz to communicate with an ATMEL AT45DB011D flash memory, but only get 3, no matter what I do, and I'm sure it's not a software problem since I already have this working with an LPC2368 at 15 MHz peripheral clock. On the other hand, AT45DB011D electrical specifications does not specify a minimum ...


Bootloader minor enhancment suggestion

Started by John Heenan in LPC200012 years ago 6 replies

I suggest a formal request be made to Philips with regard to their bootloader for the following minor enhancements. None of these suggestions...

I suggest a formal request be made to Philips with regard to their bootloader for the following minor enhancements. None of these suggestions are strictly necessasry. The suggestions would simply make working with the LPC slightly easier. The suggestions are to enable a programmable flash space and interrupt remap location modelled on the ATMEL AVR system while retaining their current...


LPC2148 with SPI EEPROM

Started by Sutton Mehaffey in LPC200012 years ago 2 replies

Anyone used the ATMEL EEPROMs? Just a curiousity question. I was wondering why the 8 byte write limitation on a single write (page)? Not...

Anyone used the ATMEL EEPROMs? Just a curiousity question. I was wondering why the 8 byte write limitation on a single write (page)? Not only that, if you write somewhere in the middle of the 8 byte page, you have to end the write at the end of the page and issue another write at the beginning of the next, even though the addresses are sequential. The Read has no such restriction. Why i...


power consumption

Started by janek_szymanski in LPC20008 years ago 2 replies

Hi, I am in a process of selecting a Cortex-M3 micro for a new project. One of the criteria is lowest possible power consumption in run...

Hi, I am in a process of selecting a Cortex-M3 micro for a new project. One of the criteria is lowest possible power consumption in run mode. So far I was able to determine (based on manufacturers specifications) the following values for uC families: EFM32 (Energy Micro) - 0.18mA/MHz Stellaris (TI) - 0.56mA/MHz STM32 (STMicroelectronics) - 0.625mA/MHz SAM3S (Atmel) - future device - 1.15m...


Need a replacement for 4MB serial flash from ATMEL

Started by dhan...@solus.co.in in LPC20008 years ago 11 replies

Hi to all, We are facing an issue nothing technical but affecting the development task. That is we have two serial Flashes on our product...

Hi to all, We are facing an issue nothing technical but affecting the development task. That is we have two serial Flashes on our product interfaced using SPI and SSP, one is used to store the firmware using file system another stores a raw memory which is the user settings and some editable data. Then we have another SD card to store firmware using file system as an alternative option. ...


LPC2468 debugging with Macraigor usb2Demon

Started by stevelenz2008 in LPC200010 years ago 2 replies

I'm trying to get a system up and running using the Embedded Artists LPC2468 development board with a Macraigor usb2Demon using the GNU...

I'm trying to get a system up and running using the Embedded Artists LPC2468 development board with a Macraigor usb2Demon using the GNU toolchain and Eclipse. Macraigor does not have any sample code for the board. I have gotten it to work on an Atmel AT91M55800 board and tried modifying that GBDINIT file to use on the LPC2468. The initial problem is starting up the Macraigor OCDRemo...


Problems with SPIO(LPC2148)!!!

Started by venkat_oct10 in LPC200010 years ago

Hello, In my code i have interfaced atmel serial data flash, i have given my spi code here and the operation i have done is that, i am...

Hello, In my code i have interfaced atmel serial data flash, i have given my spi code here and the operation i have done is that, i am reading the SPI data register. Note here i am not communicating with my slave. I came to know that my SPI write has some problems hence i am not communicating with my device.Even if i communicate i am getting the write and read values as 00 and sometimes...


simple serial EEPROM

Started by omkar vyas in LPC200012 years ago 1 reply

Hi, can any one give simple idea to interface serial memo. atmel 24c256. My RTC on I2C is working fine so i thing ground work for interface...

Hi, can any one give simple idea to interface serial memo. atmel 24c256. My RTC on I2C is working fine so i thing ground work for interface is ready i just want to interface serial memo.to it (how to do it???) can any one help me with siple program flow steps! i have gone through the progams on group but some siplifide program is what i need! Thanking You! omkar! _______________...


Interrupt vectors in SRAM, code in Flash

Started by Shahzeb Ihsan in LPC200011 years ago 13 replies

Has anyone tried to use interrupt vectors from the SRAM with the rest of the user code residing normally in the flash? From what I've read this...

Has anyone tried to use interrupt vectors from the SRAM with the rest of the user code residing normally in the flash? From what I've read this seems possible, but there were a few things I'd like to clear up to make sure I am on the right track... 1.) The interrupt vectors will have to be "copied" into the SRAM's first 64 bytes. I believe this is the way it was with Atmel's AT91 series AR...


TNKernel (free RTOS for ARM) version 2 has been released

Started by ytremil in LPC200013 years ago 1 reply

TNKernel v.2 now has mutexes with Priority Inheritance Protocol and Priority Ceiling Protocol supporting. Few additional API functions has...

TNKernel v.2 now has mutexes with Priority Inheritance Protocol and Priority Ceiling Protocol supporting. Few additional API functions has been added mostly for create/delete objects, terminate tasks and also for dynamic changing task's priority. Additional processors (Atmel AT91SAM7S and STMicroelectronics STR711) ports has been added to examples. There a


Getting started with a good board / development tools for LPC2xxx development

Started by jeanpierrepoulin in LPC200012 years ago 2 replies

Hello LPC gurus? May I have a few moments of your time for a recommendation on a good board for LPC2xxx ARM development? We're considering...

Hello LPC gurus? May I have a few moments of your time for a recommendation on a good board for LPC2xxx ARM development? We're considering the $1.70 LPC2101 for low cost products and the new LPC2888 for USB battery-operated handheld remotes, but we haven't committed to the decision yet as we're still evaluating competing ARM chips such as the new Atmel AT91SAM7Xxx. To help us make...


AT91 ARM Thumb

Started by Jamie Morken in LPC200014 years ago 6 replies

Hi all, Just wondering what people think of the Atmel AT91 ARM Thumb chips? The "AT91RM9200-QI-002" looks pretty interesting....

Hi all, Just wondering what people think of the Atmel AT91 ARM Thumb chips? The "AT91RM9200-QI-002" looks pretty interesting. It is 180MHz pqfp 208 package. Are these supported by the arm/thumb GNU toolchain? Anyone selling evalboards for these chips? ch


FAT/wear-levelling code

Started by in LPC200010 years ago 7 replies

Hello, I am developing an application on a LPC2366 ARM based board that needs=20 large storage capabilities. This board has an external flash...

Hello, I am developing an application on a LPC2366 ARM based board that needs=20 large storage capabilities. This board has an external flash memory=20 (ATMEL 45DB161D-2Mega). I am thinking to use/develop a FAT file system=20 than will use this memory. The FAT layer will also need wear-levelling=20 algorithms in order to prevent data corruption. Does anyone here can suggest any free open...


[ANN:] ICCV7 for ARM BETA3 and pre-release Order Special

Started by Richard in LPC200013 years ago

ICCV7 for ARM Beta 3 is now on our web site's demo page. We now have full Application Builder support for all current Philips LPC2K...

ICCV7 for ARM Beta 3 is now on our web site's demo page. We now have full Application Builder support for all current Philips LPC2K and Atmel (including the new SAM7) devices. We are running a 10% off special until March 15, 2005. We expect to ship the final version the fir


Problems with SPIO(LPC214x)

Started by venkat_oct10 in LPC200010 years ago

(code corrected) Hello, In my code i have interfaced atmel serial data flash, i have given my spi code here and the operation i have done...

(code corrected) Hello, In my code i have interfaced atmel serial data flash, i have given my spi code here and the operation i have done is that, i am reading the SPI data register. Note here i am not communicating with my slave. I came to know that my SPI write has some problems hence i am not communicating with my device.Even if i communicate i am getting the write and read val...


indication for complete data transmission to USB host

Started by Manisha in LPC200012 years ago 1 reply

Hi all, Thanks for helping me in solving the issue regarding polling for reception of data. now, i am stuck in an other problem. i want an...

Hi all, Thanks for helping me in solving the issue regarding polling for reception of data. now, i am stuck in an other problem. i want an indication whenever my USB data gets transmitted succesfully to the host. in Atmel they provide one TXCOMP bit which is set whenever the USB host receives any data and acknowledges for the same. however, in lpc i have only TxENDPKT bit which indicates o


How Big program could be loaded to 2106 via IAP/ISP

Started by Ioannis in LPC200012 years ago 1 reply

Dear All, I'm planning to use LPC2106 for a new design. My question is how big program could be up-loaded via ISP/IAP. I know that for Atmel...

Dear All, I'm planning to use LPC2106 for a new design. My question is how big program could be up-loaded via ISP/IAP. I know that for Atmel SAM7 is restricted to 64 KB (due to RAM), as also for STR7 up to 128 KB (due to Flash). So, do you know if any limitation about size of program uploading is in LPC2106. Thank you, and kind Regards Ioannis


Code Read Protection Feature : Flash Security issue ?

Started by croquettegnu in LPC200012 years ago 9 replies

Hi all, I would like to know what are the limitations of the CRP protection because this kind of protection is controlled by the onchip...

Hi all, I would like to know what are the limitations of the CRP protection because this kind of protection is controlled by the onchip bootloader so by software and I think that it is perhaps less efficient than a hardware code read protection feature ... In fact, what are the solutions to access the flash code content even if CRP is enabled ? I have seen that ATMEL proposes a flash ...


FreeRTOS for LPC1766 now available

Started by FreeRTOS info in LPC20009 years ago

For those who may find it of interest: http://www.freertos.org/Free-RTOS-For-NXP-Cortex-M3-LPC17xx.html This demo will be developed over...

For those who may find it of interest: http://www.freertos.org/Free-RTOS-For-NXP-Cortex-M3-LPC17xx.html This demo will be developed over time - especially when I get a newer part = - but this is a good base. It includes a WEB server and demonstrates the new run-time-stats feature. Also there is a new demo for the Atmel Cortex M3. Regards, Richard. + http://www.FreeRTOS.org Desig...