Timing Diagram Editors

Started by James Beck in comp.arch.embedded14 years ago 20 replies
LED

Does anyone make a DECENT timing diagram editor? I don't need any timing analysis, just some pretty graphics to help get some information...

Does anyone make a DECENT timing diagram editor? I don't need any timing analysis, just some pretty graphics to help get some information across to some techs that do not speak English very well, and I'm sure the data will be needed for a manual as well. The timings are in milliseconds, not ns and my googling has led to some pretty expensive dead ends. Jim...


pic16f77 acting goofy

Started by Anonymous in comp.arch.embedded15 years ago 33 replies

I will try to make this question as short as possible. I'm making a "quiz box" that displays the first two of any 20 players that buzz in. I'm...

I will try to make this question as short as possible. I'm making a "quiz box" that displays the first two of any 20 players that buzz in. I'm using a pic16f77. The program scans 20 ports (buttons) and displays the first two numbers (1-20) on four single digit 7-segment LED displays via a display driver. Also, a speaker buzzes after the first player has buzzed in. Everything works great e...


I mus be stupide but..

Started by Andre in comp.arch.embedded7 years ago 6 replies

Begining with pic programing in C The following prog works on a pic16f84A #include /***** CONFIGURATION *****/ __CONFIG(0x3F61); /*****...

Begining with pic programing in C The following prog works on a pic16f84A #include /***** CONFIGURATION *****/ __CONFIG(0x3F61); /***** MAIN PROGRAM *****/ void main() { // Initialisation TRISB = 0b00000000; PORTB = 0b11110000; for (;;) { // turn on LED only if button pressed if ( RA0 == 1 ) PORTB = 0b000011; else PORTB = 0b110000; } // repeat for


BIOS vs bootloader

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

Hi I am trying to understand the difference between a BIOS and bootloader from an embedded system's perspective. In particular, the system we...

Hi I am trying to understand the difference between a BIOS and bootloader from an embedded system's perspective. In particular, the system we are designing will have no hard disk and uses a NAND flash as a storage medium. The processor is likely to be an Atom core, running on a WinCE platform. I would appreciate if anybody could provide feedback on the following: 1. I am led to understand B...


Interrupts on a PIC18

Started by Ron Blancarte in comp.arch.embedded12 years ago

Ok, I THOUGH I was following the C18 compiler User guide to a T, but I am having trouble getting the interrupts to work right. I am working...

Ok, I THOUGH I was following the C18 compiler User guide to a T, but I am having trouble getting the interrupts to work right. I am working with a PICDEM HPC, which has a 18F8722 as the main chip, I am just trying something simple to get an understanding of their interrupt system. The HPC demo board has 8 LEDs on PortD, the code powers every other LED 1010 1010. When I don't include t...


WiPort problems

Started by John Speth in comp.arch.embedded12 years ago 3 replies

Hi Embedded Group- I'm having a problem with my Lantronix WiPort module and I'd like to hear some non-Lantronix advice if that's possible. ...

Hi Embedded Group- I'm having a problem with my Lantronix WiPort module and I'd like to hear some non-Lantronix advice if that's possible. I'm not an experienced user of wireless hardware and software. I had a very early WiPort on a WiPort eval board from 2004. It stopped working after a few hours of use (WLAN ACTIVITY LED is held steady on whereas it would flash when it worked). ...


Off-the-shelf temperature controller modules

Started by Robert Sneddon in comp.arch.embedded12 years ago 11 replies

I'm looking for a small embedded controller module which can interface directly to a thermocouple (K-type, I think) and provide about 16...

I'm looking for a small embedded controller module which can interface directly to a thermocouple (K-type, I think) and provide about 16 lines of digital I/O to drive control switches and LED displays. We're currently using DIN-cased PID controllers but they're overkill for this project (pricewise as well as capability and complexity) and designing a dedicated control unit may be to our adva...


(New York) Trade ARM9 EVBs for ARM7

Started by larwe in comp.arch.embedded11 years ago 6 replies

So... do you have one or two spare ARM7 EVBs or header boards you're not using? I wanted a 32-bit micro for a little weekend project and...

So... do you have one or two spare ARM7 EVBs or header boards you're not using? I wanted a 32-bit micro for a little weekend project and thought I'd use the two STR91x dongles I have here. Unfortunately the chip in question (STR912FW44X6) is at best casually documented and requires a full day of frustration just to get an LED blinking. So much for getting this project finished over the Lab...


Nubie question: Programming ATMEL MEGA8

Started by beef...@dogod.com in comp.arch.embedded14 years ago 3 replies

After looking over a lot of cool projects based on the ATMEL family of microcontroller, I just bought a bunch of ATMGAG8-16PI's. I...

After looking over a lot of cool projects based on the ATMEL family of microcontroller, I just bought a bunch of ATMGAG8-16PI's. I bought these because I was under the impression these where very easy to play with: + On chip RC oscillator, no need for a crystal for simple stuff + Lots of I/O pins with decent source and sink capacity - can light up LED's directly + A/D converter (...


Project with "IF" function and timer

Started by Iron-Sim in comp.arch.embedded4 years ago 56 replies

Hello guys, I am a Belgian maker and I am actually trying to learn how to program MSP430 in C language. I have read of course some tutorials...

Hello guys, I am a Belgian maker and I am actually trying to learn how to program MSP430 in C language. I have read of course some tutorials but I am stuck with this problem. I would like to do this : - If I push the bouton with a timing lesser than 1 second, the RED light switch on. - If I push the button with a timing higher than 2 second, the GREEN light switch on. - If a LED is swit...


looking for LCD

Started by Remis Norvilis in comp.arch.embedded14 years ago 3 replies

I am looking for 5 passive monochrome grapchics LCDs, with following specs: 5.7" diagonal 320x240 Operating temp 0C to 50C Viewing Angle 12...

I am looking for 5 passive monochrome grapchics LCDs, with following specs: 5.7" diagonal 320x240 Operating temp 0C to 50C Viewing Angle 12 o'clock (or 6 o'clock) NO integrated controller Integrated backlight (CCFL or LED) Price is my primary concern. But I'd like to avoid obsolete LCDs, or ripped of some used devices, as the product might have a small volume (10 -50) production over ne...


Embedded is the right way?

Started by Petomarmitta in comp.arch.embedded12 years ago 9 replies

Hello! I'm a noob on emb, and I need some help choosing a system for my application. I need a board with these interfaces: USB, VGA, Ethernet,...

Hello! I'm a noob on emb, and I need some help choosing a system for my application. I need a board with these interfaces: USB, VGA, Ethernet, general LCD (lcd/led matrix) also with a memory as CompatctFlash (for OS, drivers and datas). I have to write a program that can read an imput from a USB device (as a Barcode reader) and elaborate its with a local database (or LAN database). Th...


LCD/touch panels

Started by Don Y in comp.arch.embedded8 years ago 19 replies

Hi, I need some QVGA or better, backlit (preferably LED), color, full graphic, (have I omitted any adjectives?) LCD touchpanels in small...

Hi, I need some QVGA or better, backlit (preferably LED), color, full graphic, (have I omitted any adjectives?) LCD touchpanels in small quantities (like a dozen). I'm currently using some 10" panels but they are just too damn big. Ideally, I'm looking for ~5" diag, 4:3 aspect ratio. I've tried DX but their search engine sucks, big time! You end up "browsing" their entire catalog --...


Serial Programming, SPI and ATmega

Started by samad in comp.arch.embedded15 years ago 2 replies

Dear all, I am trying to send commands to a max6952 LED driver via SPI with my microcontroller (ATmega8) which has SPI, however I have never...

Dear all, I am trying to send commands to a max6952 LED driver via SPI with my microcontroller (ATmega8) which has SPI, however I have never writtern programing for serial communication, and I don't know were to start. Would anyne be kind enough to guide me the write direction (documentation, website...). I can't find anything on google. Can I use general pins on the microcontroller? Or ...


Shift register chip to drive 7 Segment LED

Started by Richard in comp.arch.embedded14 years ago 6 replies

Hi I would like to drive a 7 segment using a shift register and have tried 74LS164 but it could not source enough current. Can anyone recomend...

Hi I would like to drive a 7 segment using a shift register and have tried 74LS164 but it could not source enough current. Can anyone recomend me some parts that can drive the 7 segment using serial. I have quite a few common cathode and anode LEDs and I would like to make used of them. Thanks Richard


One pin, one component oscillator with GA144

Started by Albert van der Horst in comp.arch.embedded7 years ago 6 replies

Chuck Moore has published the code to run an oscillator on one processor of a GA114 chip. It uses a single 10 Mhz resonator and no other...

Chuck Moore has published the code to run an oscillator on one processor of a GA114 chip. It uses a single 10 Mhz resonator and no other components hanging off one pin. This works in principle also with a crystal (which led to some controversy here), but it is harder to get started because of the enormous q-factor of a crystal. This hinges on submicrosecond switching between input and outp...


[Update] Voice activated program in C for MSP430 G2553 family

Started by speedofsound1 in comp.arch.embedded4 years ago 4 replies

I wrote earlier this week in regards to requirement of a program that converts signals in analog to digital for the MSP43 G2553 to read. I...

I wrote earlier this week in regards to requirement of a program that converts signals in analog to digital for the MSP43 G2553 to read. I think I have a better approach to my problem... I will be using the microphone to voice activate (as demo) the LED in port P1.6. This sounds really simple but I can't get the thing to complie. Can someone write a quick program to see if I am doing it ...


Illegal opcode found on address 0x0 (msp430)

Started by stuart.h in comp.arch.embedded15 years ago 2 replies

Anyone know what is the problem that happened on my TI MSP430F449 MCU I use the IAR Embedded Workbench as the platform and MSP430 FET440 as...

Anyone know what is the problem that happened on my TI MSP430F449 MCU I use the IAR Embedded Workbench as the platform and MSP430 FET440 as the Flash Emulation tool. I really dont have a clue what happened with the code.. couse I have use a demo code which worked fine for me to toggle the led as follow ORG 01100h ; Program Start ;--------------------------...


Philips/NXP micro with RF txmitter and RFID

Started by larwe in comp.arch.embedded13 years ago 3 replies

I'm looking at a 315MHz car remote with integrated 125kHz RFID PATS transponder, and trying to find out some more about the single-chip solution...

I'm looking at a 315MHz car remote with integrated 125kHz RFID PATS transponder, and trying to find out some more about the single-chip solution they're using. It's Philips-branded but very hard to read. The FCC registration data describes it as a "STARC2XL" microcontroller. Browsing NXP's junkpile of a web site has not led me to any RF- containing micros at all; can anyone provide me with...


Problems with Olimex LPC-2106 (random crashing)

Started by Anthony Fremont in comp.arch.embedded12 years ago 8 replies

Hello all. :-) I''m new to the ARM world, but after much struggling, I''ve managed to figure out how to compile and load code into RAM using an...

Hello all. :-) I''m new to the ARM world, but after much struggling, I''ve managed to figure out how to compile and load code into RAM using an openocd JTAG programmer from Olimex. Using Eclipse or Insight as the debugger makes no difference in the behavior. The problem is that I seem to be getting random crashes when running the code (simple LED blinker with for/next delay loops). Some...