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Why does I2C Expander reply with NAK when master sends a byte?

Started by learn 3 months ago10 replieslatest reply 3 months ago36 views
NXP LPC11E68JBD48E Microcontroller I2C1 is Master. I2C1 is in chapter 13.  I2C1 is in Master Transmitter Mode.http://www.mouser.com/ds/2/302/UM10732-315822.pdfNXP...

Insert CRC32 into ROM image such that start up CRC32 value results in constant

Started by plinnie 3 months ago13 replieslatest reply 3 months ago55 views
I'm inserting a 32 bit CRC into a ROM image in using the following method: First I link using a custom linker script, setting a custom CRC32 symbol to 0. Over the...

STMicroelectronics 8 bit MCUs

Started by DebD 3 months ago9 replieslatest reply 3 months ago83 views
Hello! I'm learning to code an STMicroelectronics 8 bit micro-controller. I want to control a BLDC motor with this MCU for electric vehicle application. I'm using...

NAND Flash Memory layout

Started by NikolaDzoniRistic 3 months ago3 replieslatest reply 3 months ago60 views
Hello,I am trying to understand how a NAND flash memory chip works. Specifically, I am communicating with one via SPI protocol. The memory has a certain number of...

Flash Memory

Started by NikolaDzoniRistic 4 months ago10 replieslatest reply 3 months ago84 views
Hello all,I am using a flash memory chip: "WINBOND 25N01GVZEIG". I am having a lot of difficulty making it work because of my  bad understanding of the product...

AD9601 with 200MSPS connected to DSP

Started by iosman123 4 months ago5 replieslatest reply 4 months ago58 views
Hello,I am working with high speed ADC (200/250MSPS) to sample the signals and connect it to stm32f429 microcontroller.How is it possible to handle such high speed...

Digital PID controller in velocity form

Started by steven01 4 months ago4 replieslatest reply 4 months ago102 views
Hello all,I have been facing a problem how to implement digital PID controller. I have studie a lot of books and articles about that and in all the books I have...

The SPI interface reads the same value from the A/D. Why is it stuck?

Started by Eliza 5 months ago18 replieslatest reply 4 months ago74 views
I have a pressure sensor connected through the SPI interface of a Microchip controller, p33FJ128MC706A. The sensor is read at 125 Hz driven by a timer interrupt...

Question about send parameter from web site with cgi

Started by OmarPoch 5 months ago3 replieslatest reply 5 months ago35 views
Hi team. I'm ussing RCM3700 DC 925 and RabbitWebI´m sorry if my question is very "dumb"I have a page with a link thats call to a .cgi declarated into my RCM 3700...

NOR Flash as mass storage with cortex M Series.

Started by nomancyclewala 5 months ago8 replieslatest reply 5 months ago74 views
I have a 4MB NOR Flash. i want to show this memory as Mass storage on a PC when connected as a USB device. I have some confusions regarding the need of Filesystems...

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