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NXP is a manufacturer of semiconductors, both ICs and discrete components.

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programming JN5168

Where can I find documentation for JN5168. I am thinking of buying this module but I didn't find anything which can help in programming though the datasheet of module has almost all features which I ...
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60 views

NXP LPC2138 does not start up. Electronic problem?

I have a problem with LPC board and I cant figure out what is wrong. It manifests like this: I can connect board via jtag and Keil sw recognise the processor. I can program it (at least I guess that ...
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1answer
62 views

LPC43xx External Static Memory - Multiplexing of Address/Data lines

We would like to tightly-couple a FPGA with a µC by means of the external static memory memory controller, thereby effectively mapping the FPGA registers into main memory of the µC with maximum ...
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67 views

LPC2148 + Eclipse + yagarto + openOCD. Issue with the interrupts

I'm using 'Eclipse-Indigo' + yagarto + 'openocd-0.7.0' setup for a project on LPC2148. I've set up the environment properly. I'm able to compile, link and debug the project. I've configurred Timer0 ...
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1answer
102 views

Optimal configuration for PLL on LPC17xx

I'm trying to write an algorithm that would pick the best available PLL0 configuration for the user based on F_in and F_cclk. The manual says that I should pick higher F_ref if possible for a more ...
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2answers
234 views

Flyback SMPS Transformer choice

In several projects so far, I have been using old "fashioned" transformer based power supplies. However, this time around I want to use a switching mode power supply. The supply will be used to power ...
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1answer
64 views

LPC1343 evaluation board USB bootloader not working?

My LPC1343 no longer shows up as a USB mass storage device. I am using the following evaluation board for NXP's LPC1343: ...
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0answers
63 views

LPC11u14 Flash driver “UnInit” return code: 0x1

I have a board lpcexpresso. With LPC11U14 After connecting some LED to pins I can not flash it anymore with the given error Flash driver "UnInit" return code: 0x1 Flash driver "UnInit" return code: ...
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1answer
61 views

How to lower current consumption in JN5148-J01 Microcontroller?

I am using JenNet-IP stack and JN5148-J01 MCU for smart home application. As per JenNet-IP stack my MCU will not be in sleep mode because it is working as router in WPAN. But I have to reduce current ...
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2answers
74 views

What are the implications of a ROMLESS device?

I was looking through the microcontrollers area of Digikey and I noticed a device that i'm interested in although there is the description of "ROMLESS" in the program memory type. ...
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1answer
113 views

Does the LPC1343 MCU need an external clock for USB operation?

I am trying to design a board using the LPC1343: http://www.nxp.com/documents/data_sheet/LPC1311_13_42_43.pdf I would like to be able to use its on-board USB bootloader to program it. My question is ...
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1answer
199 views

Program LPC1343 thru USB bootloader with the right FILE format

I'm having a real hardtime programming my LPC1343 with the method mentioned in this question (Can an LPC1343 accept its initial program over USB?). I am using a Linux machine and arm-none-eabi-gcc. I ...
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203 views

Blocking wait for pin change on a LPC1114 microcontroller

I need to synchronize the rising edge of a PWM with another signal pulse's falling edge on a LPC1114FN28 (trying to drive a TCD1304DG), but am failing to achieve this so far. I have tried the ...
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108 views

LPC1769 Xpresso board not responding to ISP

I've been happily programming my LPC1769 Xpresso board using an FT232 breakout board for weeks now. Recently, I moved the project into an enclosure, and it no longer responds to programming. I've ...
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1answer
248 views

Using a manufacturer specific Profile and Cluster on NXP JN5168

I am writing a ZigBee application on NXP JN5168 MCU. I would like to create a custom Endpoint with a custom Cluster defined by me instead of one from the ZigBee Cluster Library. Looks like I'm forced ...
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1answer
143 views

Help to fix custom CDC Send function

I am using a custom code of CDC example from 177x_8x_PDL_110602 package (I am not using LPCOpen). I am having a trouble with CDC_Send function. That is the scenary: An python script send messages to ...
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1answer
409 views

USB Stack for LPC1343

I was trying to implement a USB keyboard on LPC1343 using the ROM based HID driver when I came across some information on the internet which stated that the ROM based HID driver is very limited in ...
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179 views

Sdcc linker error "could not get183 consecutive bytes in internal RAM for area DSEG

I am trying to interface micro sdcard with P89V664 using Petit FatFs. Petit FatFs link http://elm-chan.org/fsw/ff/00index_p.html. Chan's Petit FatFs sample port are available at ...
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2answers
82 views

Missing connection in amplifier example?

I've been staring at the datasheet for NXP's TDA1308 headphone amplifier IC for a while, and I'm just feeling confused. Their recommended application circuit (Figure 4 in the datasheet) looks like ...
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3answers
337 views

Synchronizing SPI ports for higher data rate

I am designing a new board which uses the NXP LPC4330 (Cortex M4 microcontroller) with a XESS Xula2 FPGA development board. In this design, the Xula 2 has limited I/O pins since it is designed to fit ...
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1answer
955 views

Does an SD card in SPI mode respect chip select/slave select? Seems to be resetting in my application

I have an application where I have a microcontroller (NXP LPC1343) which is connected to an FPGA via 16-bit SPI. There is also an SD card using the same SPI port (MISO/MOSI) but with a different CS/SS ...
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3answers
1k views

Consensus on proper wiring for Cortex M 10 Pin JTAG Connector

For the past few weeks I have been working with the new revision of my ARM Cortex M4 design that I posted about a month ago, thanks again to everyone who provided me with much needed guidance and ...
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1answer
408 views

USB 2.0 PCB trace design restrictions

Thanks to the help from this community I am much closer to finishing my new design. Right now I am most worried about my USB 2.0 traces, and I want to make sure that I am doing everything right with ...
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4answers
358 views

Readying a New Design, would appreciate som feedback

I designed a Arduino shield compatible board around the NXP LPC4337JBD144. so far I have been unable to get the first revision to program. In the first design the JTAG header was not setup ...
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1answer
996 views

How can I communicate between micro-controller and PC without the use of RS232/USB Adapter?

I use an NXP micro-controller, P89V51RD2, and use a RS232 to USB converter to program it. I'd like to communicate with the computer to send data but without using the RS232 adapter and convert serial ...
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3answers
394 views

How can I store audio files in the uC ROM so as to serially transmit it to a decoder chip?

I am using an NXP micro controller (P89V51RD2) with on board flash of 64kB. I want to interface it with an audio decoder IC, probably VS1011 (if I can get the IC). What should I do to use on board ROM ...
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1answer
239 views

NXP LPC1343 GPIO questions

I am an embedded SW developer who wants to get more familiar with HW design. I have an LPCXpresso board with an LPC1343 on it. I want to build some circuit around that. I thought I'll start by finding ...
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1answer
369 views

PN512 not starting?

I got a PN512 IC (NFC controller from NXP) interfacing with a MCU over SPI and ChibiOS. Everything seems to be working fine, i can read the registers and they returned value matches with the reset ...
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2answers
565 views

I2C EEPROM with non-standard address?

So I know that almost all i2c EEPROM ICs use 0xAh (or 1010) as the top four bits of the slave address. I currently have a 16 kbit EEPROM on my i2c bus that uses the lower 3 bits of the slave address ...
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2answers
224 views

How can I detect HIGH or LOW input on a NXP microcontroller?

I am using NXP micro-controller P89V51RD2. I need to detect HIGH or LOW from 2 single bits. How do I store input state to a pre-defined address so that my functions can detect it as data? I need to ...
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1k views

Getting started with LPCXpresso

I just got my LPCXpresso 11U14 Cortex M0 board. I spent a week trying to get SPI working and I still get compiler errors! I've tried to use the example projects on NXP's website, but they are all for ...
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3answers
373 views

LPC1343 Firmware Loading - Change drive label

I have a system that is using the built-in firmware loading facility of the LPC1343. When the flash drive is mounted, the disk is always labeled "CRP_DISABLED". Is there a way to change the label of ...
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144 views

Expand RAM and flash on LPC2294

I have a project in mind. I want to buy an LPC2294 microcontroller, SDRAM IC, and flash IC (those IC's haven't yet been defined). What I want to do is connect those ICs to the microcontroller in order ...
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1answer
539 views

Can an LPC1343 accept its initial program over USB?

The LPC13xx datasheet suggests some clock setup is necessary to use USB. Does the chip's built in boot loader make it possible to load the initial program over USB, or do the clock multipliers have to ...
4
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1answer
2k views

Running a CAN sample project on LPCXpresso LPC11C24

The LPC11C24 has a on-chip CAN transceiver and a section of ROM with CAN driver software. I am trying to run the can_onchip sample project on the LPCXpresso board. ...
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2answers
298 views

Why are chips used in electronic identity cards?

Why did Germany choose NXP's SmartMX chip in the new Electronic ID Card (see here) instead of having a more conventional solution, like an old credit-card-like approach? In fact, the question is ...
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2answers
321 views

Reading a LPC2378 microcontroller [closed]

I can't get data off my ARM LPC2378 microcontroller - does it need UART or can any GPIO be used?