EmbeddedRelated.com

Polling vs. Interrupts in counting pulses - what is better?

Started by ElderUberGeek in comp.arch.embedded18 years ago 5 replies

Hi. When counting pulses using a microcontroller (say from an encoder or pulse generator), there are two methods: polling and using interrupts....

Hi. When counting pulses using a microcontroller (say from an encoder or pulse generator), there are two methods: polling and using interrupts. Two alternative designs can be used (well, at least), one is to have the Microcontroller do it directly, and the other is to use a dedicated chip to do it. The concern is of course that the microcontroller might miss pulses if it is loaded with other ...


What Microcontroller can be used with inductive loop sensors

Started by simon86 in comp.arch.embedded16 years ago 5 replies

Hi, I am currently working on a university project that concerns the functionality of an inductive loop sensor. While I understand its...

Hi, I am currently working on a university project that concerns the functionality of an inductive loop sensor. While I understand its basic functionality I am unsure how to use it with microcontroller. We will be using the sensor to detect vehicles that are parked in a parking spot. Once detected, we want the sensor to communicate with some sort of microcontroller so a timer can be set. Ho...


Microchip PIC32MZ Flash Microcontroller is the World's Fastest 32-bit MCU

Started by Bill Giovino in comp.arch.embedded10 years ago 31 replies

http://microcontroller.com/news/Microchip_PIC32MZ.asp The Microchip PIC32MZ runs at 330MIPS at 200MHz and easily competes against the...

http://microcontroller.com/news/Microchip_PIC32MZ.asp The Microchip PIC32MZ runs at 330MIPS at 200MHz and easily competes against the Cortex-M4. Includes a Microchip PIC32MZ block diagram and friendly roadmap for the PIC32 family. Bill Giovino http://Microcontroller.com


FPGA + Microcontroller - HELP

Started by LOC in comp.arch.embedded19 years ago 13 replies

Hi all, What is a device consisting of FPGA and microntroller suitable to following reqiurement: 1. my PCB board size is 2.5"x2.5" - small (so...

Hi all, What is a device consisting of FPGA and microntroller suitable to following reqiurement: 1. my PCB board size is 2.5"x2.5" - small (so I need a chip which has FPGA and Microcontroller ? ) 2. FPGA portion has minimum 28 JK FlipFlops, 28 shift registers, and the rest for IO and state machine, input clock 100 Mhz minimum. 3. microcontroller size has 2 serial ports, USB. Any advice wi...


How can I Network using a microcontroller

Started by Omid Ghayour in comp.arch.embedded20 years ago 18 replies

I have a microcontroller and I want to make a connection with a lan card (a pc on a lan) using TCP/IP. I think to use the lan card IC to control...

I have a microcontroller and I want to make a connection with a lan card (a pc on a lan) using TCP/IP. I think to use the lan card IC to control the protocol, but I need to write a driver for it on my hardware. Can anybody help me to write the driver. I am experinced (almost) on 8051 microcontroller. Thanks, Omid.


Generating 38400 or 115200 Baud Rate using AT89C52 Microcontroller

Started by Anonymous in comp.arch.embedded18 years ago 3 replies

Dear All, I am Ravikmar.N, working on Atmel (AT89C52) microcontroller. I know that TIMER1 of AT89C52 can be used to...

Dear All, I am Ravikmar.N, working on Atmel (AT89C52) microcontroller. I know that TIMER1 of AT89C52 can be used to generate baudrate upto 57600. I need to set the microcontroller to 38400 or 115200. I dont know what values to be filled to the TIMERn register and which TIMERn to be used. If anybody know the solution please share your knowledge with me. Thank...


Question: Microcontroller/kit for college project (robot)

Started by ChrisLo in comp.arch.embedded17 years ago 9 replies

Hello, I'm brand new to this forum, but it seems to be the best place I could find to ask my question about a microcontroller and possibly a kit...

Hello, I'm brand new to this forum, but it seems to be the best place I could find to ask my question about a microcontroller and possibly a kit (I hope I posted in the right place). I'm currently a junior Computer Engineering major and am very new to the microprocessor world, so please forgive my noobish questions. =) What I need is a good microcontroller kit for my dynamics project. Prefe...


Re: Guy Macon on "how many microprocessors can dance on the head of a pin?"

Started by Guy Macon in comp.arch.embedded17 years ago 7 replies

Robert Adsett wrote: > BTW the distinction I always heard between microcontroller and > microprocessor was the microcontroller did not...

Robert Adsett wrote: > BTW the distinction I always heard between microcontroller and > microprocessor was the microcontroller did not have an external bus and > the microprocessor did. That would make an 8051 a microprocessor. as a rough guide to usage, Google has it's advantages: 19,200 hits for "8051 microprocessor". 116,000 hits for "8051 microcontroller" So "8051 micro


Guy Macon on "how many microprocessors can dance on the head of a pin?"

Started by Guy Macon in comp.arch.embedded17 years ago 11 replies

Robert Adsett wrote: > BTW the distinction I always heard between microcontroller and > microprocessor was the microcontroller did not...

Robert Adsett wrote: > BTW the distinction I always heard between microcontroller and > microprocessor was the microcontroller did not have an external bus and > the microprocessor did. That would make an 8051 a microprocessor. as a rough guide to usage, Google has it's advantages: 19,200 hits for "8051 microprocessor". 116,000 hits for "8051 microcontroller" So "8051 micro


microcontroller for capacitive touch screen?

Started by Ajab in comp.arch.embedded17 years ago 14 replies

We are thinking to interface LCD and this touch screen through a microcontroller. Is there any company available that provides microcontroller...

We are thinking to interface LCD and this touch screen through a microcontroller. Is there any company available that provides microcontroller for capacitive touch screens?


Low power USB Microcontroller

Started by Anonymous in comp.arch.embedded17 years ago 9 replies

I wonder if anyone can help, I am looking for a USB Microcontroller with the following specifications USB+USART+SPI , possibly not need...

I wonder if anyone can help, I am looking for a USB Microcontroller with the following specifications USB+USART+SPI , possibly not need SPI USB slow or fast, RS232-300-19200 baud min, prefer upto 115200. When the USB is in suspend or not connected Microcontroller needs to run at low speed such that current consumption is around 1mA but the RS232 to keep running and the data logged and no p...


microcontroller search

Started by srinib in comp.arch.embedded10 years ago 4 replies

Hello All, Iam looking to buy a microcontroller board which has a 4.3" LCD, ethernet, USB, ADC controller within the uC and pin...

Hello All, Iam looking to buy a microcontroller board which has a 4.3" LCD, ethernet, USB, ADC controller within the uC and pin out for use and GPIOs. Any suggestions ? Thanks, Srinivas --------------------------------------- Posted through http://www.EmbeddedRelated.com


Driving a led without a series resistor (PWM technique)

Started by Anonymous in comp.arch.embedded16 years ago 6 replies

Hi, I'm designing a board where the microcontroller is supposed to drive 10 red leds and 4 optocouplers. I would like to drive the leds and...

Hi, I'm designing a board where the microcontroller is supposed to drive 10 red leds and 4 optocouplers. I would like to drive the leds and the opto's without a series resistor using the PWM technique. I made some experiments and all seems to work fine in the lab. 1. The supply voltage is 3.3 Volt 2. The microcontroller is an ARM7 by NXP (LPC2387) 3. In DC, the microcontroller's GPIO...


Implementing Microblaze in Xilinx Virtex4 (ML401) ?

Started by moraali in comp.arch.embedded17 years ago 2 replies

Good morning I have a project where I need to embed microcontroller in a Xilinx ML401.This project consist a GSM which connect to...

Good morning I have a project where I need to embed microcontroller in a Xilinx ML401.This project consist a GSM which connect to a microcontroller(ATMEGA8535) and the microcontroller is eventually connected to Xilinx Virtex4 (ML401).It is actually road traffic light implementation for Emergency Vehicle Preemption System. My friend told me that I could do this by implementing a Microbl...


(MS-)DOS PC on a microcontroller??

Started by Paul Rosen in comp.arch.embedded16 years ago 45 replies

Hallo. I am wondering, whether anyone made the possibly useless attempt, to create a (MS-)DOS (and its old programs) compatible PC on...

Hallo. I am wondering, whether anyone made the possibly useless attempt, to create a (MS-)DOS (and its old programs) compatible PC on a Microcontroller by using its flash as harddisk?


Any Microcontroller with integrated IEEE1394?

Started by Roland Zitzke in comp.arch.embedded20 years ago 2 replies

Hi, I was wondering if there's any microcontroller with built-in 1394 support i.e. with the appropriate hardware connectivity and a firewire...

Hi, I was wondering if there's any microcontroller with built-in 1394 support i.e. with the appropriate hardware connectivity and a firewire stack in firmware? Google just gave me that MindReady solution which appears to be quite expensive. Thanks in advance Roland


Optimize C++ for a microcontroller

Started by deel...@googlemail.com in comp.arch.embedded16 years ago 9 replies

Hello, I am trying to optimize C++ code for an 16 Bit Microcontroller from renesas, does someone have any idea, how can I approach this...

Hello, I am trying to optimize C++ code for an 16 Bit Microcontroller from renesas, does someone have any idea, how can I approach this Problem. for any help i will be very grateful best regards


Uncertain behaviour in ARM microcontroller on reset

Started by abhay in comp.arch.embedded17 years ago 3 replies

hiiiiiiiii, i am interfacing LCD to my ARM microcontroller (PHILIPS LPC2138).i am able to program the LCD ,but it is uncertain. the problem...

hiiiiiiiii, i am interfacing LCD to my ARM microcontroller (PHILIPS LPC2138).i am able to program the LCD ,but it is uncertain. the problem is that when i reset my microcontroller or my development board the LCD is programmed and it displays the messages sent to it but when i reset it again it goes blank and after another reset it works fine again. so LCD gets programmed alternately. ...


24C04 with my microcontroller

Started by Aliasger in comp.arch.embedded20 years ago 4 replies

hi anyone has a good site where i can find interfacing the serial EEPROM with my microcontroller? the hardware wiring is pretty simple,...

hi anyone has a good site where i can find interfacing the serial EEPROM with my microcontroller? the hardware wiring is pretty simple, but i'm also looking as to how the MC is going to access the 24C04 in terms of software. any suggestions? - A


Which microcontroller do you advice?

Started by Tolga Onbay in comp.arch.embedded19 years ago 3 replies

I have been tried to develop some small projects on MicroChip's PICs like I said before. But in the commercial area which microcontroller is...

I have been tried to develop some small projects on MicroChip's PICs like I said before. But in the commercial area which microcontroller is most selected? I don't want to waste my time anymore! Nowadays, I'm working on ARMs. Thanks for your advice...