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2005-01-31 by Stefan Trethan
On Mon, 31 Jan 2005 09:47:06 -0600, Mike Perks wrote: > > Stefan, > I have been following this thread with interest so let me throw in my 2 > cents. > Different program languages and assembly languages have different pros > and cons. Some make life easier generally at the expense
2005-01-31 by Kathy Quinlan
Dave VanHorn wrote: > >>Why can you not use your RH server and use SSH if it is not local :) > > > Mostly because nof it's stubborn non-existence. It broke again ? If you join the yahoo group cvsgui (which is on wincvs and also covers cvsnt (which is not just for NT, but *nix, Ma
2005-01-31 by ethan@bufbotics.org
Mike Perks said: > > Const Motor_Enable_Pin as Byte = 22 > Const Turn_Motor_On as Byte = bxOutputHigh > Const Turn_Motor_Off as Byte = bxOutputLow > ... > Sub Main() > ... > call PutPin(Motor_Enable_Pin, Turn_Motor_On) > ... > End Sub > Mike, Thanks for the info. The code you lay
2005-01-31 by Leon Heller
----- Original Message ----- From: "Stefan Trethan" To: Sent: Monday, January 31, 2005 4:29 PM Subject: Re: [AVR-Chat] accessing bits (e.g. of ports) > > On Mon, 31 Jan 2005 15:44:06 -0000, Leon Heller > wrote: > >> In most languages, including C, you can't manipulate individual
2005-01-31 by Mike Perks
Stefan, I have been following this thread with interest so let me throw in my 2 cents. Different program languages and assembly languages have different pros and cons. Some make life easier generally at the expense of abstracting away detail. Without trying to over generalize her
2005-01-31 by ethan@bufbotics.org
Larry Barello said: > Don't use the enable line for PWM input. Use the complementary PWM > outputs > to drive the A & B side of the H-Bridge and use the enable line to, > well, > enable the driver. > Larry, Thank you for the feedback. I hadn't thought of using PWM on the A and B
2005-01-31 by alan_probandt
...set A=1 and B=0 for a motor. It'll go clockwise. Similarly, set A=0 and B=1, and I get reverse (counter clockwise). And the PWM signal on the Enable line then turns the motor on for only small snippets of time, as defined by the duty-cycle. The Pulse Width Modulation signal is
2005-01-31 by Stefan Trethan
On Mon, 31 Jan 2005 09:47:49 -0500 (EST), wrote: > > > if (turn_motor_on) { > setbit(MOTOR_ENABLE_PORT, MOTOR_ENABLE_PIN); > } else { > clrbit(MOTOR_ENABLE_PORT, MOTOR_ENABLE_PIN); > } > > Personally, I would prefer something like..... > > write_bit(turn_motor_on, MOTOR_ENABLE_PO
2005-01-31 by ethan@bufbotics.org
While we're on this topic, I'll add in my own "grievance". >> #define setbit(ADDRESS,BIT) ((ADDRESS) |= (1 > #define clrbit(ADDRESS,BIT) ((ADDRESS) &= ~(1 if (turn_motor_on) { setbit(MOTOR_ENABLE_PORT, MOTOR_ENABLE_PIN); } else { clrbit(MOTOR_ENABLE_PORT, MOTOR_ENABLE_PIN); } Per
2005-01-31 by javierfiasche
does anyone have ds1302 RTC routines. I'am trying to use the ones that come with codevision avr, but i dont happen to have succes. if anyone knows how to use them to set rtc and print to an Lcd date an time please tell me Examples welcome Thsanks a lot!!!!! Javier.
2005-01-31 by Leon Heller
----- Original Message ----- From: "Stefan Trethan" To: Sent: Monday, January 31, 2005 3:13 PM Subject: Re: [AVR-Chat] accessing bits (e.g. of ports) > > On Mon, 31 Jan 2005 09:47:49 -0500 (EST), wrote: > >> >> >> if (turn_motor_on) { >> setbit(MOTOR_ENABLE_PORT, MOTOR_ENABLE_PIN
2005-01-31 by Stefan Trethan
On Mon, 31 Jan 2005 14:21:19 +0100, Svenn Dahlstrøm wrote: > I use ICCAVR and do it this way : > #define setbit(ADDRESS,BIT) ((ADDRESS) |= (1 #define clrbit(ADDRESS,BIT) ((ADDRESS) &= ~(1 #define chkbit(ADDRESS,BIT) ((ADDRESS) & (1 #define togglebit(ADDRESS,BIT) ((ADDRESS) ^= (1
2005-01-31 by Dave VanHorn
> >Why can you not use your RH server and use SSH if it is not local :) Mostly because nof it's stubborn non-existence.
2005-01-31 by Svenn Dahlstrøm
I use ICCAVR and do it this way : #define setbit(ADDRESS,BIT) ((ADDRESS) |= (1 > > Hi, > > what is the easiest way to access single bits of ports (SFRs)? > > i have found msg00020.html> with google. > > This: > PORTC |= _BV(0);. > is madness ;-). I'm doing this for a hobby and st
2005-01-31 by Stefan Trethan
On Mon, 31 Jan 2005 12:31:51 -0000, Paul Maddox wrote: > > Stefan, > >> Why, and if yes how, can i get something like that: >> PORTC.0 = 1; >> or >> PC0 = 1; >> or if it must be >> PORTC.BIT0 =1; > why don't you use #define? > to do some of this? > A lot depends on your compiler,
2005-01-31 by Paul Maddox
Sven > #define setbit(ADDRESS,BIT) ((ADDRESS) |= (1 #define clrbit(ADDRESS,BIT) ((ADDRESS) &= ~(1 #define chkbit(ADDRESS,BIT) ((ADDRESS) & (1 #define togglebit(ADDRESS,BIT) ((ADDRESS) ^= (1
2005-01-31 by Paul Maddox
Stefan, > Why, and if yes how, can i get something like that: > PORTC.0 = 1; > or > PC0 = 1; > or if it must be > PORTC.BIT0 =1; why don't you use #define? to do some of this? A lot depends on your compiler, for example CV-AVR is happy with ;- PORTC.0 = 1; PAul
2005-01-31 by stefan_trethan
Hi, what is the easiest way to access single bits of ports (SFRs)? i have found with google. This: PORTC |= _BV(0);. is madness ;-). I'm doing this for a hobby and stuff like that causes me to loose my interest in it. I need to think 30 minutes until i know what i have to write,
2005-01-31 by Kathy Quinlan
Dave VanHorn wrote: > > Argh. > > I've DL'd a windows version of a CVS server, but all the docs are in unix. > > Does anyone have a pointer to a quickstart or intelligible doc for CVSNT? > > I have the docs printed, but like most unix apps, it seems to assume you > want to make a
2005-01-31 by Bernd Felsche
On Monday 31 January 2005 11:36, Dave VanHorn wrote: > I've DL'd a windows version of a CVS server, but all the docs are > in unix. In Unix? You mean too concise or too extensive? :-) > Does anyone have a pointer to a quickstart or intelligible doc for > CVSNT? > I have the docs
2005-01-31 by Dave VanHorn
Argh. I've DL'd a windows version of a CVS server, but all the docs are in unix. Does anyone have a pointer to a quickstart or intelligible doc for CVSNT? I have the docs printed, but like most unix apps, it seems to assume you want to make a career of admiring it's structural lo
2005-01-30 by Ron
Greetings, Take a look at chip # M74HC4053B1R. It adds a chip to your project but buys the protection of some connected device being under control during programming. Ron ----- Original Message ----- From: ethan@bufbotics.org To: AVR-Chat@yahoogroups.com Sent: Sunday, January 30,
2005-01-30 by Larry Barello
Don't use the enable line for PWM input. Use the complementary PWM outputs to drive the A & B side of the H-Bridge and use the enable line to, well, enable the driver. -----Original Message----- From: ethan@bufbotics.org I built a circuit that uses an ATtiny26 for control and an
2005-01-30 by ethan@bufbotics.org
I built a circuit that uses an ATtiny26 for control and an SN754410NE motor driver (ultimately destined for a line-following hobby robot). It works nicely and I have full control over the motors using pins PB1 & PB3 to control the enable pins on the motor driver. I also have an A
2005-01-30 by stefan_trethan
Hi, i'm looking for a good AVR C guide, using winavr. I have programmed other micros before in C and ASM and all the guides i come across linger for pages on how to install the software in windows and don't give details on the parts i struggle with. I do only want to use C for no
2005-01-30 by Dave VanHorn
At 08:48 PM 1/29/2005, Eric wrote: >Come on you ............................ people > >sorry I half described the problem, I have downloaded some data sheets, I >will try and make another >effort so we don't get a lot of ................... people making jokes > >But for me the t
2005-01-30 by stevech
"I was really asking is there a Atmel series where you dont need to poll?" YES - all series -----Original Message----- From: Eric [mailto:erichards@clear.net.nz] Sent: Saturday, January 29, 2005 11:24 AM To: AVR-Chat@yahoogroups.com Subject: Re: [AVR-Chat] Interrupts ignore the o
2005-01-30 by Eric
Come on you ............................ people sorry I half described the problem, I have downloaded some data sheets, I will try and make another effort so we don't get a lot of ................... people making jokes But for me the thread has gone off, and think I might be was
2005-01-30 by Matthew Cook
At 21:26 29/01/2005, Kat wrote: > > PS: How did you go with your Ham License ? > >You know, put on the back burner :( Noooooooooo....... Now that is a bummer ! Keep at it, I'm sure you'll find some spare time in there somewhere ... I was looking forward to catching up on a repeat
2005-01-30 by Bernd Felsche
On Sunday 30 January 2005 02:37, Eric wrote: > I first learnt about microprocessors on the Motorola 6800 family > back in the mid 70's > > They are great, the timers/counters have hardware interrupts, when > they are activated (like a timers/counters flag been set) , it > sends t
2005-01-30 by stevech
My oh my, Eric - I was really asking is there a Atmel series where you dont need to poll? What part of "Yes, ALL the AVRs do" don't you get????? A program may use interrupts or polling for I/O events.
2005-01-29 by Zack Widup
Whenever I take on a new device of any kind to use, the first thing I do is get the data sheet and study it as much as necesary in order to really understand how the device works. I went over some of the first AVR data sheets I had probably 20 times or so before I wrote my first
2005-01-29 by Dave VanHorn
> >However the Atmel products don't seem to have this feature, the software >have to continually look to see >if the timers/counters flag have been set, with a software loop. Oh my god, all my applications just stopped working!
2005-01-29 by Dave VanHorn
At 10:57 AM 1/29/2005, assault_wolf wrote: >OK, one thing everyone seems to be doing is assuming you need to >actually keep the data in case of a power bump. Unfortunately, that is a valid assumption. I've found a part, a gigabit NAND-Flash from ST, that has serial and 8/16 bit i
2005-01-29 by Leon Heller
----- Original Message ----- From: "Eric" To: Sent: Saturday, January 29, 2005 7:23 PM Subject: Re: [AVR-Chat] Interrupts > > ignore the one sent a minute ago > > > Hi Leon and all else > > I have been all over that, "polling" is the word I should of used in the > posting that st
2005-01-29 by Leon Heller
----- Original Message ----- From: "Eric" To: Sent: Saturday, January 29, 2005 7:19 PM Subject: Re: [AVR-Chat] Interrupts > > Hi Leon > > I have been all over that, "polling" is the word I should of used in the > posting that stated this thread. > > My point was have software loo
2005-01-29 by Eric
ignore the one sent a minute ago Hi Leon and all else I have been all over that, "polling" is the word I should of used in the posting that stated this thread. My point was having software loops that just spend all day polling the flags to see if they are set seems to be such a w
2005-01-29 by Eric
Hi Leon I have been all over that, "polling" is the word I should of used in the posting that stated this thread. My point was have software loops that just spend all day polling the flags to see if they are set seems to be such a waste of resources, I think the Motorola concept
2005-01-29 by stevech
The Atmel chips' timers, like most all micro's, have interrupts (as you describe) for timers, UART and many other I/O events. -----Original Message----- From: Leon Heller [mailto:leon.heller@dsl.pipex.com] Sent: Saturday, January 29, 2005 10:49 AM To: AVR-Chat@yahoogroups.com Sub
2005-01-29 by Eric
I first learnt about microprocessors on the Motorola 6800 family back in the mid 70's They are great, the timers/counters have hardware interrupts, when they are activated (like a timers/counters flag been set) , it sends the Micro off to FFFx and FFFx+1 (I can not remember the c
2005-01-29 by Leon Heller
----- Original Message ----- From: Eric To: AVR-Chat@yahoogroups.com Sent: Saturday, January 29, 2005 6:37 PM Subject: [AVR-Chat] Interrupts I first learnt about microprocessors on the Motorola 6800 family back in the mid 70's They are great, the timers/counters have hardware int
2005-01-29 by Brian Dean
Just FYI, I've implemented your function in one of my MAVRIC-II boards and verified the PWM signals from PORTE3 and PORTE4 on my scope. They work as I think you expect. OCR3x = 0 gives a 0% duty, OCR3x = 1023 gives 100% duty, and 0 To: > From: "wbounce" > Date: Fri, 28 Jan 2005 2
2005-01-29 by assault_wolf
OK, one thing everyone seems to be doing is assuming you need to actually keep the data in case of a power bump. I'm going the opposite direction: Try dual port SRAM or FIFO. Cypress ( http://www.cypress.com/ ) makes a large number of Dual port SRAMS and FIFOs. They're actually o
2005-01-29 by Zack Widup
On Sat, 29 Jan 2005, Dave VanHorn wrote: > > > > > > PS: How did you go with your Ham License ? > > > >You know, put on the back burner :( > > > Grrrr....!! :) > Ham radio and AVR's seem to go well together. I think most of my AVR projects have been ham radio related. So when you
2005-01-29 by Dave VanHorn
> > > PS: How did you go with your Ham License ? > >You know, put on the back burner :( Grrrr....!! :)
2005-01-29 by Kathy Quinlan
Matthew Cook wrote: > At 04:09 29/01/2005, Kat wrote: > >>Does anyone have a good link for setting up CVS,I have a few FreeBSD >>servers so the bulk of the install is done, just need to config and work >>out a winblows interface so I can check the files in and out :) > > > I'll s
2005-01-29 by fusion_netz
Sir, We have purchased @Web PSTN board of Atmel.There is Demo program already there on board We have some queries about the Demo program as follows. 1.We want to know how the demo program is working. 2.When there is phone call made to the @Web PSTN board,the board makes a phone c
2005-01-29 by Matthew Cook
At 04:09 29/01/2005, Kat wrote: >Does anyone have a good link for setting up CVS,I have a few FreeBSD >servers so the bulk of the install is done, just need to config and work >out a winblows interface so I can check the files in and out :) I'll second the WinCVS path (www.wincvs
2005-01-29 by wbounce
No and I would not know how to work with it anyhow. I will be going to my club's meeting in 2 weeks and one of the guys there may have one. >From what I see I do not think I am getting any pulse on the left side and I am seeing some but not as much as I would expect on the right.
2005-01-29 by Brian Dean
On Fri, Jan 28, 2005 at 06:54:31PM -0500, wbounce wrote: > void initmotor(void) > { > OCR3A = 0; > OCR3B = 0; > > TCCR3A = BV(WGM31) | BV(WGM30) ; /* set timer/counter 3 to fast PWM mode > 7 */ > TCCR3A |= BV(COM3A1) | BV(COM3B1); /* Clear OCnA/OCnB/OCnC on compare > match when u