• SDK 2.5.0 USB0 host ctrl:INT IN false positive on STALL

    The USB stack invokes the transfer callback status kStatus_USB_TransferStall when the device does not actually answer IN token with STALL at transport. This causes our application to fail and to enter fault recovery w...
    bob belmont
    last modified by bob belmont
  • SDK 2.5.0:USB0 host ctrl:ISO IN cbf invoked with "transfer->transferSofar" always 0

    There is a bug for the SDK for host controller ISO IN transfer. The USB stack invokes the transfer callback with parameter “transferSofar” equals to 0 for  payload  length > 0 at transport. So...
    bob belmont
    last modified by bob belmont
  • Using the LPC54114 SPI API

    Had a question about the LPC54114 SPI API. I've been banging my head against the wall for close to two days on something that should seemingly be working. I am trying to read the UID code from a Microchip EEPROM, PN ...
    James Whitney
    last modified by James Whitney
  • LPC54018 temperature sensor

    I am using the LPCXpresso54018 OM40003 SDK and have used a SDK demo to read analog inputs 1..8 and also the temperature sensor instead of analog input 0. I wanted to read all 9 inputs every 10ms all at the same time u...
    David Kaplan
    last modified by David Kaplan
  • The code in M0 core is running from SRAM or FLASH? (LPC54114)

    I'm now running a dual-core project in LPC54114. Every thing works fine. But it came to me that from where the M0 core fetched its code? SRAM or FLASH? What about M4?
    Da Chen
    last modified by Da Chen
  • Posible race condition on usb_device_dci.c

    I have not observed any issues yet, just was looking at code to understand buffer usage/copy ... and came with this code: file usb_device_dci.c of LPC SDK 2.5 function USB_DeviceTransfer at line 277 ...
    Jan Bertran
    last modified by Jan Bertran
  • Global constant in GNU AS

    I have an assembler program consisting of several partial programs. I know that labels have to be declared as "global" so that other partial programs can see them: label: LDR R0,[R1] can only be seen by the same pa...
    Ian Benton
    created by Ian Benton
  • How to burn images of dual-core projects into chips (LPC54114)

    I'm using MCUXpresso to build a dual-core project. When I debugged it as the official document says -- start a debug thread for M4 and another for M0, I found 2 cores worked quite well. I thought the image for M4 and ...
    Da Chen
    last modified by Da Chen
  • a LPC54xx  main clock issue.

    what i did :  1.  i set the lpc54606 main_clk:48Mhz       2. I initialize a GPIO as output, then in main i did this:    so i got a clk . but  the frequency...
    yangyong wu
    last modified by yangyong wu
  • How does the M4F core boot the M0+ core

    Since there are 2 cores in LPC54114, I want to know how the M4 boot the M0 core in the chip. Every documents I found did not say anything specifically about this step.   Besides, I am us...
    Da Chen
    last modified by Da Chen
  • LPCXpresso54018 OM40003 secondary bootloader problem

    I am using the LPCXpresso54018 OM40003 board for development with MCUXpresso IDE v10.3.1 until our custom board arrives. I need to have a secondary bootloader in order to update the code in the field. The secondary b...
    David Kaplan
    last modified by David Kaplan
  • LPC54628 5v tolerant?

    Hi All,   Does the LPC54628 have 5v tolerant IO?   Looking at the line-card, and while some LPCs explicitly state 5v tolerant IO the LPC54000 doesn't say either way. https://www.nxp.com/docs/en/product-se...
    Mike Spenard
    last modified by Mike Spenard
  • How to merge a FatFS Project with a second project ?

    Hello, to All, With the help of Kerry Zhou I was able to get some SD Card code from a previous 'Community project going. This question is somewhat of a follow on. I have an application very similar to the 'periph_i2s...
    James Whitney
    last modified by James Whitney
  • LPC 546xx - Possible to keep GPIO State and Config during Reset?

    We are using the LPC 54618 microcontroller in a system to power on/off other devices using the microcontrollers GPIO Pins.   To update the LPC we reset it. During reset the GPIO Pins reset to default settings(In...
    Kevin Gomes
    last modified by Kevin Gomes
  • nuttx

    hi:    It didn't work that I run the LPCXpresso54628 board os demo of nuttx at LPCXpresso54018 board platform.I changed the board configuration of PLL frequency from 220MHz to 180MHz and spiflash addre...
    兵 王
    last modified by 兵 王
  • LPC54xxx atol,atoi,strtol Redlib maximum input

    I need to parse a decimal string representation of an unsigned 4 byte integer or long. In my debugger I can see that when the 4 byte value string is 2943834865, I get a result of 2147483647 (0x7fffffff) from atol,at...
    David Kaplan
    last modified by David Kaplan
  • IAP_ReinvokeISP

    I am invoking iap_entry to force it into ISP mode using UART 0, regardless of the ISP0/1/2 pin state.  I use ISP_ReinvokeISP provided in fsl_iap.h with these arguments:   uint32_t status = 0; IAP_Reinvoke(...
    Joe Holiday
    last modified by Joe Holiday
  • LPC54018

    Hi:       Where could I get the software tools to download bin or hex file to LPC54018 borad through LPC-Link 2 and JLINK?         Thank you! 
    兵 王
    last modified by 兵 王
  • LPC546XX User Guide and CAN Bus Info.

    Hello,   I'm using the LPC564xx User Manual UM10912 Rev 2.2 for some CAN info. Right now I'm trying to figure out the TX FIFO, queue and dedicated buffer relationship and have a problem with the documentation. T...
    Jay Schwichtenberg
    last modified by Jay Schwichtenberg
  • Can USB be connected when LPC54114 is in deep-sleep mode

    I found that USB can be set to wake up the MCU when in deep-sleep mode. But what if I disable the wake up interruption from USB. Do I need to reconnect with other devices? Or if I don't shutdown the USB connection, bu...
    Da Chen
    last modified by Da Chen