Farhan, no my sweeperino doesn’t work properly because I see the 14.5Mhz
frequency displayed on the LCD but by checking with scope the Si570 output I
get a 56.32Mhz wave.
Dick could you please explain to me some more detail? What is the pullups
value? and what version of the arduino IDE are you using? Did you check the
Si570 output with a scope?
Thank you for the help
Riccardo
Il giorno 09/dic/2015, alle ore 16:51, Richard Hayter
<richardshayter@xxxxxxxxx> ha scritto:
Hello Riccardo,
I am also building a Sweeperino using CMOs version. I have a prototype of it
working. Startup frequency is in the 14mHz area. This is on the UNO. Now I am
also able to upload the code into the NANO. This evening I will be connecting
the Si570. I will let you know if I get it working.
73 Dick N4HAY
ZS6RSH.blogspot.com <http://zs6rsh.blogspot.com/>
On Wed, Dec 9, 2015 at 4:29 AM, Riccardo Montaguti <ricky451@xxxxxxxxxx
<mailto:ricky451@xxxxxxxxxx>> wrote:
Good morning,
I’m building a sweeperino because would be a very useful tool but I’m having
problems with the Si570.
I’ve uploaded an arduino nano with the code without getting errors but when i
connect the arduino to the si570 I can get only the 56.32Mhz frequency even
if the LCD display shows 14.5Mhz and also by tuning the potentiometer.
I’ve checked by the arduino serial window and I get the following:
*Sweeperino v0.02
*Testing for Si570
Successfully initialized Si570
*Si570 ON
So I think the I2C is communicating but maybe there is a freeze in the code.
By using the radiono program I have the same problem and I get in the serial
monitor this:
Radiono starting - Version: 0.4
Tests successful!
Successfully initialized Si570
--- Si570 Debug Info ---
Crystal frequency calibrated at: 20283316
Status: 1
Register[7] = e1
Register[8] = c2
Register[9] = b6
Register[10] = 2a
Register[11] = a5
Register[12] = 93
HsDivider = 11 N1 = 8
Reference Frequency (hex) : 0002b62aa593
Reference Frequency (double): 43.385
I’ve build the circuit exactly as the original schematic (I use 4.7K
pull-ups) and I’ve only changed the LCD pins to get it working properly.
Could someone please give me some advices? I’ve also tried to change the
Si570 but with no luck
Thank you for the kind attention
Riccardo Montaguti
