• Calibrate Systick timer with 32 kHz crystal

    I am using an LPC1850 running at 180 MHz via the internal oscillator. According to the datasheet, the oscillator has a frequency tolerance range of 1.5%.   I have the system tick timer configured to interrupt at...
    last modified by rawsewage
  • How to use two flash with lpc_spifilib in LPC1857

    I want use two spi flash in LPC1857,but I don't know how to add secede cs pin in  lpc_spifilib; lpc_spifilib from https://www.nxp.com/downloads/en/software/LPCSPIFI-Library-v1.01-Library-Updates.z...
    last modified by zhangbin.eos@foxmail.com
  • LPC18xx SSP0 peripheral reading only high

    Hi all,  I'm currently working with the SSP0 peripheral on a LPC1857 and a LPC1837. On both chips, I've not been able to get the MISO line to read anything besides a high value (255) no matter what is written to...
    Michael Tao
    last modified by Michael Tao
  • How to reset LPC43xx from application

    How to reset LPC43xx from application   In my project ,I need to reset cpu from application. First  I start a Project  in  MDK5 IDE.   void Reset_Handler(){ SystemInit(); ...
    hp eric
    last modified by hp eric
  • Integrated RTC to human reaadable format

    Hi,   Some microcontrollers from NXP include a RTC module (which is not a true RTC chip). This module has a 32 bit counter that counts once per second to keep track the time even when the main power su...
    Fco. Javier Rodriguez G
    last modified by Fco. Javier Rodriguez G
  • LPC 1820 - GPIO - DMA - SRAM speed

    Content originally posted in LPCWare by kellykan on Sat Mar 05 14:02:58 MST 2016 Hi Guys, I've been working on a project for a while where we implemented a GPIO DMA transfer to memory to capture 2 bit parallel data ...
    last modified by lpcware
  • SCT appliction for outout Specified freq and Specified pulse number

    I wirte an API for PLS(freq, PLS_num)//freq :1~200k , PLS_NUM 0~ 10000 . for example ,PLS(200K,100) : SCT will send 200K Hz 100 pluse. when SCT complete a plule , SCT interunt will happen and count pluse number , tha...
    yansin lee
    last modified by yansin lee
  • LPC1812 TFBGA100 SDRAM

    The user manual seems to indicate that you can use the EMC with SDRAM in the 100-pin package (it contains all required dynamic signals), however AN11508 says that the chips only support 16/32 bit SDRAM devices.  ...
    last modified by otsl
  • SCT -  PWM 200K Hz 100puse,not use interupt to STOP。

    SCT0產生一個200KHz AB pulse輸出波形,當user設定100次pulse(200KHz AB) 後,自動將SCT0關掉. (不用中斷去關掉SCT0,因為隨MCU的負載量變大,會導致來不及去關掉SCT0,導致額外多輸出101次的波形) SCT0有甚麼方法可去完成這個應用?不使用中斷。 -----------------------------------------------------------------...
    yansin lee
    last modified by yansin lee
  • SCT  applicaion - count PWM pluse number

    how to count PWM  pulse  by SCT ? for example . sent 200K 100pulse(duty 50~40%) to SCT。 SCT can count 100 pulse(can not use SCTinterupt)  please give me example.thanks.   -------...
    yansin lee
    last modified by yansin lee
  • MCU Xpresso (LPC Link2) Attach

    I have MCUXrpresso 11, and would like to "attach to a running target", something that was relatively easy in v. 10.2 Now it's more awkward to do (edit the launch configuration to select "attach only" and not select "...
    Ian Benton
    last modified by Ian Benton
  • LPC1857 B

    We recently received a lot of LPC1857 devices with revision B marking. We currently use rev A devices. I don't found any document about that supposed new version.
    Daniel Kubiak
    last modified by Daniel Kubiak
  • LPC1817 EMC Interface read cycle

    Hi NXP support team,       I got an issue about LPC1817 EMC interface read cycle. I connected the EMC(Static memory) interface to SRAM in my design.  When I issued one read cycle, I got two EM...
    Chase Lin
    last modified by Chase Lin
  • LPC2148

      Please help me to get the answer.
    Jon Bright
    last modified by Jon Bright
  • LPC1857: Access to the USB Host Bulk data

    Background: We have a PC-controlled production equipment which uses an USB mass storage. There is few non-standard SCSI-commands in the USB-traffic. Currently used USB mass storage is now obsolete. So we need an "int...
    last modified by eviiru@netscape.net
  • LPC Link 2 - Ferrite Bead Burned (L3)

    Hi!  I have two two boards LPC Link 2 with burned ferrite bead.  First of them burned some about two years ago. Then I thought that it was just a defect of this board only. Small ferrite bead (L3) was des...
    Roman Leonov
    last modified by Roman Leonov
  • Anyone have lpc 18xx spi interface with ADS1248 example codes ?

    Thanx in Advance  I am looking for ADS1248 example for LPC1833.
    Naman Patel
    last modified by Naman Patel
  • LPC 18xx SPI Config for any TI chip example code

    I want to test DAC8750 chip with LPC1833
    Naman Patel
    last modified by Naman Patel
  • LPC43xx SDRAM EMC D/DQM signal ordering

    I'm working on an LPC4357 based design which uses the EMC with 32-bit SDRAM.  BGA256 package.   According to the EMC documentation the controller always accesses the SDRAM in bursts of four words. This mean...
    last modified by leecoakley
  • usart receiving problem?

    Hai              i  am using LPC824 MCUXPRESSO  when i try to receive the char from the usart  by using usb to serial converter , i open the terminal in  my mcux...
    Aravind palanisamy
    last modified by Aravind palanisamy