lpc2468 isochronous usb transfer help

Started by Gurkan Karakus in LPC20004 years ago 1 reply
USB

Hello friends, I am trying to send audio data to usb audio class device. For this, i am using below code to schedule an isochronous transfer...

Hello friends, I am trying to send audio data to usb audio class device. For this, i am using below code to schedule an isochronous transfer but couldnt acheive it. steps1. on device initialization code (on device attached step), setup an isochronous transfer2. when isochronous transfer completes (in Writeback Done Head interrupt) setup another isochronous transfer .. so on USB_INT32S Host_P...


NXP LPC Cortex-M0/3/4 serial number and part number

Started by "M. Manca" in LPC20004 years ago

Hi to everyone, in the past 2 days I read several emails, too much in my opinion, revealing that too much engineers and students don't know so...

Hi to everyone, in the past 2 days I read several emails, too much in my opinion, revealing that too much engineers and students don't know so much about specific functions provided by Cortex-M microcontrollers with more care about those made by NXP. All NXP Cortex-M families of microcontrollers (with the exception of some MCU that have no flash memory inside) provide a data to distingui...


IAP writes corrupted data to flash

Started by laur...@gmx.de in LPC20004 years ago 5 replies

Hello, I am trying to program the flash of a LPC2387 via IAP. I use the code provided in the LPC2300 user manual. When I try to write a...

Hello, I am trying to program the flash of a LPC2387 via IAP. I use the code provided in the LPC2300 user manual. When I try to write a simple test pattern (0x00, 0x11, 0x00, 0x11...), after reading again I get corrupted data like 0x00, 0x01, 0x00, 0x10. So something is written, and you can recall the pattern, but the data is corrupted. Here is my write routine: iap_comm...


low power controllers

Started by Nishant Agrawal in LPC20004 years ago 5 replies

Hi, I am looking into low power LPC controllers but I cannot find any sheet or document that compares the power consumption in different...

Hi, I am looking into low power LPC controllers but I cannot find any sheet or document that compares the power consumption in different modes. Can you suggest me with the best controller. It can be from any ARM architecture but would require atleast 256K of flash and 32K of RAM. Please help me with your suggestions. -- With Regards, Nishant Agrawal


arm-elf-gdb is confused with source files.

Started by laur...@gmx.de in LPC20004 years ago 4 replies

Hello, I am having a problem debugging my code on a LPC2387. The code works fine, but I can't debug. Somehow arm-elf-gdb is confused by the...

Hello, I am having a problem debugging my code on a LPC2387. The code works fine, but I can't debug. Somehow arm-elf-gdb is confused by the source files. When for example I try to "list myfunc()", gdb shows the wrong file or doesn't show anything at all ("No source available"). The same with breakpoints. When I set a breakpoint in a function other that main(), the program stops, but gdb j...


Low Cost development system

Started by David Smead in LPC20004 years ago 2 replies

The Beagle Bone Black can be used as low cost development platform for ARM microcomputers. The native GNU gcc and other tools work...

The Beagle Bone Black can be used as low cost development platform for ARM microcomputers. The native GNU gcc and other tools work for microcomputers by specifying the processor type. See http://www.veriwiz.com/products/linux/index.html Dave ------------------------------------ Yahoo Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/lpc2000


Unable to compile the freeRTOS demo downloaded from this group

Started by hash...@yahoo.com in LPC20004 years ago 14 replies

I have built and installed gcc toolchain on my debian machine and tried to compile the lpc2148_freertos project downloaded from this group. I got...

I have built and installed gcc toolchain on my debian machine and tried to compile the lpc2148_freertos project downloaded from this group. I got the following error. hash@anagham:~/Downloads/Academic/RnD/lpc2148_freertos$ make arm-elf-gcc -Wall -Wextra -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-align -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-...


Converting LPC2148 freeRTOS port for GCC to a Keil project

Started by hash...@yahoo.com in LPC20004 years ago 2 replies

How could I convert a LPC2148 freeRTOS port for GCC to a Keil project? I have got deadline of 2 days to complete a project. It would be really...

How could I convert a LPC2148 freeRTOS port for GCC to a Keil project? I have got deadline of 2 days to complete a project. It would be really helpful if some one could through throw light on this problem.


ADC not working after power down

Started by Tim Mitchell in LPC20004 years ago 4 replies

I'm trying to write an application using the "power down" mode of the LPC1754. The ADC works fine before I invoke power down. When the...

I'm trying to write an application using the "power down" mode of the LPC1754. The ADC works fine before I invoke power down. When the device wakes up, I cannot get the ADC to work again, despite re-initialising it from scratch. All other peripherals and interrupts seem to be working. It's driving me slightly bonkers, does anyone have any ideas? -- Tim Mitchell ---------------------...


lpc24xx PWM capture timer readout problem

Started by sneh...@gmail.com in LPC20004 years ago 4 replies

Hello everyone. I am a newbie in lpc devices. I have been trying to interface the PWM based max6672 sensor with the PWM capture pin. I want to...

Hello everyone. I am a newbie in lpc devices. I have been trying to interface the PWM based max6672 sensor with the PWM capture pin. I want to read the both the low time and high time of the PWM pulse. I am recieving an interrupt when the PWm input is received. But some how I am not able to calculate the rise and fall time correctly. I need this info to calculate the temperature of the sensor. ...


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