[minima] Re: Acting on a hunch - Si570 programming code bug
- From: Mvs Sarma <mvssarma@xxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Fri, 21 Mar 2014 20:49:38 +0530
I suppose tht the I2c signals are not reaching the si570 with the present
code that was compiled.
perhaps concerned lines can be cross compared before re-compiling.
On Fri, Mar 21, 2014 at 8:39 PM, Frank <w4nhj@xxxxxxxxxxx> wrote:
> Farhan,
>
> Jerry and I have the same problem, we have output but only the start-up
> freq of 56.32 mhz. Our LCD display moves up and down when you move the
> tuning pot, but the frequency stays at 56.32 mhz. The software and the
> SI570 are not communicating. I thought perhaps the digital side of the
> SI570 chip got destroyed, but since Jerry is having the same problem and it
> seemed to occur after I loaded Thomas's software, that there may be a
> problem with the software. It worked before with your original software. I
> went back to the original software and it would not work. I was testing
> the software using an Arduino Uno and one of Dave's (WB6DHW) SI570 boards.
> I use a grounded wrist strap and with Dave's board there is no way to get
> the ATMEGA328 5 V on the I2C bus going to the SI570. I've torn this apart
> for now since I built a Minima digital board. This board works with the
> original software and a different SI570 chip. I could see data/clock on
> the I2C buss at the SI570. That tells me the software or the SI570 is
> bad. One other possibility is that there is a bad solder joint at the
> SI570 on one of the I2C lines, but it worked at one time.
>
> Has anyone been using Thomas's software successfully? Any suggestions
> would be welcomed.
>
> Frank - W4NHJ
>
> -
> On 3/21/14, 7:40 AM, farhanbox@xxxxxxxxx wrote:
>
> It is possible that the output of the si570 has got disconnected or
> shortened to the ground.
> - f
> Sent from BlackBerry® on Airtel
> ------------------------------
> *From: * Frank <w4nhj@xxxxxxxxxxx> <w4nhj@xxxxxxxxxxx>
> *Sender: * minima-bounce@xxxxxxxxxxxxx
> *Date: *Fri, 21 Mar 2014 06:54:36 -0400
> *To: *<minima@xxxxxxxxxxxxx> <minima@xxxxxxxxxxxxx>
> *ReplyTo: * minima@xxxxxxxxxxxxx
> *Subject: *[minima] Re: Acting on a hunch - Si570 programming code bug
>
> Jerry,
>
> Have you tried the old software again? When I went back to the old
> software I still could not get it to work. I have torn my setup apart as I
> built a Front Panel/Digital Board. I loaded the old software and it works
> with a new SI570. I am wondering if I smoked the SI570 in the old setup.
>
> Thomas, you said your new code does not write anything to EEPROM. Does it
> write anything to the SI570 chip. I am not even sure you can write to the
> SI570. I am grasping for any thing at this point.
>
> Frank - W4NHJ
>
> -
> On 3/21/14, 4:16 AM, jerry@xxxxxxxxxxxxxxxx wrote:
>
> Thomas, my display moves, and the FN button stops and starts it, but the
> Si570 is not changing freq. It sits at 56.32. Frank also has the same
> problem. I don't think Mac has built his main board yet. With the
> original version of the code the frequency actually moved. Jerry
>
> K5LRU
> Harwood, Texas
>
>
> -------- Original Message --------
> Subject: [minima] Re: Acting on a hunch - Si570 programming code bug
> From: Thomas Sarlandie <thomas@xxxxxxxxxxxxx> <thomas@xxxxxxxxxxxxx>
> Date: Fri, March 21, 2014 2:51 am
> To: "minima@xxxxxxxxxxxxx" <minima@xxxxxxxxxxxxx> <minima@xxxxxxxxxxxxx>
> <minima@xxxxxxxxxxxxx>
>
>
> Mac,
>
> This line is needed because there is no external pull up on the function
> key. When we set the output to 1, we force a pull-up resistor and the line
> default state will be +5v.
>
> You say it is working now? I guess you were not able to change frequency
> because the function key was always pausing your VFO. If you start moving
> in frequency now and press the FN button, you will see that it stops the
> VFO.
>
> I had already fixed this problem in the version that is on
> github:https://github.com/afarhan/radiono/commit/43fde697f93f937cacdf57bd3f11411fcdc18260
>
> Could you please try the latest from github - Without your other changes -
> and tell us whether it works or not?
>
> If not, can you add debug statement in the code to print on the serial port
> the values of the variables that are not calculated properly? How did you
> find out that some bits had been cleared? Or that the value was not
> calculated well?
>
> 73,
> thomas
>
>
> On Wed, Mar 19, 2014 at 9:29 PM, Mac A. Cody <maccody@xxxxxxx>
> <maccody@xxxxxxx> wrote:
>
>
> I found that adding the following code to setup also appears
> to solve the problem:
>
> digitalWrite(FBUTTON, 1);
>
> Considering that the Function button is an analog input, this
> is strange, in an 'Arduino sense'. In a 'microcontroller sense',
> it is not, as these lines can probably be configured as either
> analog inputs or digital inputs/outputs. What is probably
> happening is that an internal pull-up is being connected to the
> analog input. Not something one would normally do, but it works
> in this application.
>
> 73,
>
> Mac AE5PH
>
>
> On 03/19/2014 01:21 PM, Wayne McFee wrote:
>
>
> Jerry,
>
> I had the Function Switch problem, too, in that button pushes weren't
> being recognized even though the expected voltage changes were read on pin
> 26.
>
> Adding a 2.2 K pull-up resistor between pin 26 and 5V fixed it.
>
> Wayne
>
> On Mar 19, 2014, at 2:10 AM, <jerry@xxxxxxxxxxxxxxxx>
> <jerry@xxxxxxxxxxxxxxxx> wrote:
>
> My Si570 is froze at 56.32. The display tunes as normal, but the Si570
> never shifts off the 56.32 Something in the code was left out in that
> .03 version, the part that tells it to work. I know very little about
> the code so someone else will have to fix it. I'm going to reload the
> old sketch with the FN button problem so I can continue on with
> troubleshooting my other problems. Jerry
>
> K5LRU
> Harwood, Texas
>
> -------- Original Message --------
>
> Subject: [minima] Re: Acting on a hunch - Si570 programming code bug
> From: Frank <w4nhj@xxxxxxxxxxx> <w4nhj@xxxxxxxxxxx>
> Date: Tue, March 18, 2014 10:46 pm
> To: minima@xxxxxxxxxxxxx
>
>
> Jerry,
>
> What I observed on SDA and SCL was that when the tuning pot was in the
> center and the frequency on the display was stopped, I got a steady low
> or high, don't remember which. When I turned the tune pot and the
> frequency on the LCD started moving either up or down, I would see
> pulses on SDA and SCL (3 volt pulses), but as you say the actual
> frequency stays at 56.31 mHz.
>
> My Arduino and SI570 are in a different room then my computer.
> Tomorrow, per Thomas, I will try to see what I get on the serial
> monitor.
>
> Time for bed. We will get it Jerry!
>
> Frank - W4NHJ
>
> -
>
>
> On 3/18/14, 8:58 PM, jerry@xxxxxxxxxxxxxxxx wrote:
> I just checked the voltages and they are 3.3. As far as the pulses go,
> I have a signal on both SCL and SDA pins with my oscilloscope, which
> don't change when I turn the tuning knob. The freq. stays at the 56.32.
> Jerry
>
> K5LRU
> Harwood, Texas
>
> -------- Original Message --------
>
> Subject: [minima] Re: Acting on a hunch - Si570 programming code bug
> From: Frank <w4nhj@xxxxxxxxxxx> <w4nhj@xxxxxxxxxxx>
> Date: Tue, March 18, 2014 11:49 am
> To: minima@xxxxxxxxxxxxx
>
>
> Jerry,
>
> I am running the code right now on an Arduino board with a WB6DHW 5V
> to
> 3.3V converter/SI570 board. Mine setup should work either way,
> pull-ups enabled or disabled. I don't have to worry about getting 5V
> on
> SDA and SCL with the converter board. I see pulses on SDA and SCL,
> but
> the oscillator freq stays at 56.32 while the display changes. Check
> and
> see if you see pulses on the I2C, SDA and SCL, pins. Also check the
> voltage, it should be 3.3V. I am going to try a few things, but right
> now I am building a digital board. I ordered another SI570 for this
> new
> board. I sure would like to get the Arduino/converter/570 working as
> a
> signal generator. Good luck and I will let you know if I find
> anything.
>
> Frank - W4NHJ
>
> -
>
>
> On 3/18/14, 8:58 AM, jerry@xxxxxxxxxxxxxxxx wrote:
> Frank, with the original sketch, did you make the .cpp change in the
> wire.h library so the Si570 doesn't get 5v. I did. maybe that's why
> mine won't tune now. maybe Thomas did that in the new code also, I
> hear
> a clicking in the speaker when the tuning is changing frequency on
> the
> display, but it's not actually changing frequency. Jerry
>
> K5LRU
> Harwood, Texas
>
> -------- Original Message --------
>
> Subject: [minima] Re: Acting on a hunch - Si570 programming code bug
> From: Frank <w4nhj@xxxxxxxxxxx> <w4nhj@xxxxxxxxxxx>
> Date: Tue, March 18, 2014 6:02 am
> To: minima@xxxxxxxxxxxxx
>
>
> Jerry and All,
>
> I am having the same problem. I went back to the original program
> and
> the same thing. I wonder if something is being stored in EEProm and
> messing things up when you restart. I was suspecting my SI570 was
> bad,
> maybe not now that someone else is having the same problem.
>
> Frank - W4NHJ
>
> -
>
>
> On 3/18/14, 3:09 AM, jerry@xxxxxxxxxxxxxxxx wrote:
> I have just downloaded the new .03 version of the code and for some
> reason I can no longer tune around. The display shows the frequency
> changing, but it's not really changing. I have the 56.32 startup
> freq in
> my Si570 in my rig. How do I get the register values you need, are
> these
> the values on pins 7 thru 12? Jerry
>
> K5LRU
> Harwood, Texas
>
> -------- Original Message --------
>
> Subject: [minima] Acting on a hunch - Si570 programming code bug
> From: "Mac A. Cody" <maccody@xxxxxxx> <maccody@xxxxxxx>
> Date: Mon, March 17, 2014 9:44 pm
> To: minima@xxxxxxxxxxxxx
>
>
> Greetings,
>
> During the development of my Minima construction guide, I
> think I may have found some errors in the code to set the
> Si570 VFO frequency. My Si570 has a startup frequency of
> 10.00 MHz, versus the usual 'ham' Si570 that has a startup
> frequency of 56.32 MHz. I believe that I have fixed one
> of the code errors and I have a hunch as to why the original
> code failed. In order to verify my hunch, would it be
> possible for someone with a Si570 with the 56.32 MHz startup
> frequency to post the initial values they obtain for registers
> 7 through 12? From those values, I can extract the values
> for HS, N1, and RFREQ for their Si570 and either verify or
> refute my hunch.
>
> Thanks and 73,
>
> Mac AE5PH
>
>
>
>
>
--
Regards
Sarma
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