Hello everyone , My name is Sriram. I am a engineering student. I have been wanting tointerface a Micro SD card using LPC1768 micro-controller...
Hello everyone , My name is Sriram. I am a engineering student. I have been wanting tointerface a Micro SD card using LPC1768 micro-controller , I have triedlearning to use SPI protocol but wasn't able to. If anybody could provideme any suggestions or any material on how to go forward with followingwould be very helpful for me:1. Using Spi Protocol in brief with an example2. Interfacing ...
We built a little picosecond pulse generator box with a USB interface.The USB is directly into an LPC1768 NXP ARM chip, and we're using...
We built a little picosecond pulse generator box with a USB interface.The USB is directly into an LPC1768 NXP ARM chip, and we're using theUSB stack and inf file that Code Red provided. It enumerates as aserial port. It's "unsupported", which means it's *really*unsupported.Under Windows XP, there's a small glitch. I can plug/unplug the USBcable, and it always makes all the proper...
Hello,I have succeeded in creating a USB composite device that creates fourVCOM's, using a LPC1768. I have looped (via software) the input to...
Hello,I have succeeded in creating a USB composite device that creates fourVCOM's, using a LPC1768. I have looped (via software) the input to theoutput on each VCOM. After successfully installing these VCOM's in Windows7 all works as expected, however when I install them in Windows XP, thelast 3 work properly, except the first one. The symptoms are that when Iinput characters from either...
Hello, This is an undergrad student having a little experience with 8051microcontrollers. This year, I chose to learn about ARM...
Hello, This is an undergrad student having a little experience with 8051microcontrollers. This year, I chose to learn about ARM Microcontrollers,so I chose a project Digital Photo Frame on VGA with ARM LPC1768. About theproject, it should copy image from SD Card to some temporary storage(orthis might be unnecessary, as I dont know because I have a littleexperience with the timings and all) ...
Hi,I'm trying to counter some pulses (2-10usec width) using the LPC1768Cortex-M3 microcontroller. There are 2 channels on which I have count...
Hi,I'm trying to counter some pulses (2-10usec width) using the LPC1768Cortex-M3 microcontroller. There are 2 channels on which I have count thepulses on. I have to allow only pulses that are > =2us pulse width (so wecannot simply use the counter function). But it is turning out to be an incredibly difficult feat to achieve this ona 100MHz Cortex-M3. The problem arises when we try to mea
Hi,Is there any example code to make the ISR to run out of SRAM. I know thatit involves the following steps:1) Copy ISR from flash to...
Hi,Is there any example code to make the ISR to run out of SRAM. I know thatit involves the following steps:1) Copy ISR from flash to SRAM.2) Copy vector table to SRAM 3) Remap vector table to SRAM using VTORI'm struggling here. Any examples for such code? I'm using the LPC1768processor with LPCxpresso IDE/compiler. I need to do this to avoid theannoying lag when jumping to interrup...
Hi,I've setup LPC1768 for external falling edge interrupt on EINT0 pin and inthe interrupt handler, I just clear the interrupt flag and make a...
Hi,I've setup LPC1768 for external falling edge interrupt on EINT0 pin and inthe interrupt handler, I just clear the interrupt flag and make a pin(P0.0) low and immediately high again. When I check the EINT0 pin and theoutput pin P0.0 on an oscilloscope, there is a huge lag, about 520nsbetween the falling edge of EINT0 & the P0.0 becoming low.I use the LPCxpresso complier and I confirm t...
On May 14, 2:35=A0pm, Andrew Jackson wrote:> On 14/05/2011 17:29, linnix wrote:> > > On May 14, 9:12 am, "navman" =A0wrote:> > > ...
On May 14, 2:35=A0pm, Andrew Jackson wrote:> On 14/05/2011 17:29, linnix wrote:> > > On May 14, 9:12 am, "navman" =A0wrote:> > > Hi,> > > We are designing a device which needs to transfer data to a PC over US=B> > > continuously. We plan to use the LPC1768 Cortex-M3 processor for this> > > application. We would like some opinion on the
Our little USB interfaced thing is doing something else that I don'tunderstand.We use an LPC1768 to manage DACS and stuff. It has a USB...
Our little USB interfaced thing is doing something else that I don'tunderstand.We use an LPC1768 to manage DACS and stuff. It has a USB interface,which we program such that it enumerates as a serial port. Sometimes,when we talk from a PC to the box, we get extra junk characters in theascii data coming back from our box. This happens with Windows andLinux, using standard terminal ...
Hi,We are designing a device which needs to transfer data to a PC over USBcontinuously. We plan to use the LPC1768 Cortex-M3 processor for...
Hi,We are designing a device which needs to transfer data to a PC over USBcontinuously. We plan to use the LPC1768 Cortex-M3 processor for thisapplication. We would like some opinion on the best approach for the USBclass implementation. We are looking at about 400Kbytes/sec sustainabletransfer rate between the device to PC. The reverse traffic will be quitelean. We were thinking of usin...
I worked with NXP Cortex-M3 LPC1768 and similar and Microchip/Atmel SAM D20/C21.I didn't like Atmel Software Framework so I extracted a buch...
I worked with NXP Cortex-M3 LPC1768 and similar and Microchip/Atmel SAM D20/C21.I didn't like Atmel Software Framework so I extracted a buch of low-level files from ASF (mainly headers to manipulate registers) and rewrite the high-level drivers for peripherals I used (UART, ADC, Timers, ...)It wasn't a simple task, I spent many days to understand what ASF really do, decide what to ...
I normally don't use dynamic allocation in embedded projects, however there are situations where this isn't possible.I'm working on a...
I normally don't use dynamic allocation in embedded projects, however there are situations where this isn't possible.I'm working on a project with LPC1768 Cortex-M3 MCU that features 32kB+32kB RAM. I'm using lwip+mbedTLS to make a TLS connection to AWS IoT Core through Ethernet.After a precise allocation of data blocks (incoming Ethernet packets, outgoing packets and so on), it see...
I'm using Microchip SST26VF064B SPI Flash memory with an LPC1768 from LPC.It works until I change the SPI clock frequency from 24MHz to...
I'm using Microchip SST26VF064B SPI Flash memory with an LPC1768 from LPC.It works until I change the SPI clock frequency from 24MHz to 48MHz.I'm using HIGH-SPEED READ command that should work up to 104MHz (the power supply is 3.3V).For example I read 0x28 0x26 when they should be 0x51 0x4C.0010 1000 0010 0110 -> 0x28 0x260101 0001 0100 1100 -> 0x51 0x4CThey appears s
