NJW1504 PLL Synthesizer: I2C Support, Setup & Troubleshooting for BASCOM Users

Question

Hello all.

I need to run PLJ NJW1504 synthesizer. The problem is that to run it,
it must be initiated via the i2c bus it has. Pdf has nine pages and I have studied it. I tried to run it in the bascomie sending a datasheet bits to the chip - I think so ... well, I can not do it here.
Could someone help me start this synthesizer wiser than me?
I would like to take a look at PDF.

excray · Accepted Answer

BS - it depends on what you have attached to these outputs. If nothing, it does not matter what you send. As for the rest, it is also rather bad. You do not want to share the schema, so it's hard to determine. I will shoot:
My assumptions:
- 4MHz quartz
- the signal without an additional divider enters the system
- we want to get 868MHz on VCO
it comes out:
868000000 / 8/13888 = 7812.5 = 4000000/512
div- 13888 or:
div_h = 54
div_l = 64
ctrl = 198
bs = 0

excray · Answer

It looks like a fairly simple layout. So what's the problem? What do you use it for? In what frequency range will you work? Show the diagram. Show your code.

Anonymous · Answer

In the 35th line of the program you have a mistake, so that VCO does not market you. You did not show the code, but Fortune-teller Maciej gave it to me.

inspector_electro · Answer

In principle, this is the ready head in which this system sits. Has the outputs:
1-IN
2. The VCC-
3. SCL-
4-SDA
5. GND
6-OUT

Head removed from the stereo sound transmitter, for wireless speakers. On the housing, he writes 863MHz. I care about 868MHz because I want to use this head
for transmitting information from the temp / higro sensor.

A simple program, but on the LCD I have only 255.

Log in, to see the code

Added after 1 [minutes]:

R-MIK very funny ... "you did not show the code." It is about him. You are a specialist as I suppose, and I write in the bascomie "from the jump". Give yourself sarcasm.

Anonymous · Answer

Is written. After breakfast, I'll look at the code, but based on information it is without code analysis, you can deduce that you do not support IIC correctly. - Did you check whether you have ACK? - do you have a signal on SCL / SDA lines? - is not SCL converted from SDA? Make an IIC scanner and check what addresses it will find, I bet that you address the layout incorrectly. I took a look at the code: Code: VB.netLog in, to see the code I have to write next? I do not know where you were taking examples but if you used it, as was commanded Code: VB.netLog in, to see the code you would not write on the forum. Why did you assume that the result of all commands is correct? Lord, look, if you say to your wife, brother, sister, grandmother, mistress (delete as appropriate), throw away the trash, is this command always done?   I did not ask. Do you have the correct pull-up of the IIC line? Because you did not show the secret scheme, and I already do not have money for Maciej's Diviner. But if I eat breakfast, I will divide this scheme from coffee grounds. PS If you can not correctly address the layout, how will you deal with the following?

inspector_electro · Answer

Communication works because I started with the scanner. The lines are obviously tucked up, otherwise I would not find addresses 192, 194 which the scanner showed me.
I think I can handle the rest, because the thermometer / hygrometer is ready from the weather station. With the fact that he has a 433MHz transmitter. I want instead of 433MHz to put in the head that I'm talking about. There is one IN pin in the head, and here I am going to connect the transmitter from the weather station. That is, DATA pin connect to IN head.
The problem is just starting the head at 868MHz in BASCOM.
The schematic is here I think I do not need. SCL and SDA lines are well connected as well as power supply. I would have to draw in ... paincie :oops:

Anonymous · Answer

How can one layout be seen under two addresses? You'll explain it to me because I do not know electronics, I take it for logic. If there are two chips in the head (you wrote about the stereo), think about whether you give me PLN 100 if you say to Jaś, does Stas give it to you? After each command, test the variable Err and find the place where the error is. And you'll find a mistake in addressing.

inspector_electro · Answer

Well, crap. I set the range in the scanner from zero to 250 and showed me 192 and 194. I thought it works like PCF8583 or DS1307 watches. Now I'm completely stupid. There is only one layout, NJW1504.

Anonymous · Answer

Which watch is seen under two addresses? You can see the layout under even (even to write) and odd (to read) addresses but not two to write. Variable Err something for you. That's how programs are written, they assume that everything works correctly. He does not understand this approach. Any mistake and the application hangs or shows stupidity (for example why check the CRC in 1-Wire, the bus is shorted to ground and the thermometer measures 0 degrees nicely).

inspector_electro · Answer

And that's what I mean. And why do you suggest that these are write addresses? I do not understand. I will check the ERR variable.

Anonymous · Answer

You had to start with this. You probably do not have an oscilloscope (or you do not know it), an analyzer (eg SaleAE) is not it?

inspector_electro · Answer

I do not have an oscilloscope or an analyzer.
I did this:
I set the program to display the variable ERR on the LCD. All the time shines one, and disappears under the addresses under 192 and 194. Do I understand correctly that only one of these addresses is writeable? that nothing can be read from the system?

excray · Answer

But this type is the way it is. It is visible under two addresses.

Anonymous · Answer

I watched this table but I did not infer from it that it is seen under two addresses. I interpreted this always valid as it reports on every address (I am pissed off by notes, in which there are no examples of simple use of the system). It happens that the layout is seen under its address and broadcast, although I know the exception, FT201 is seen under its broadcast and # 78. Added after 1 [minutes]:   Do not have a sound card? I do not believe.

inspector_electro · Answer

This note is stripped at all.

excray · Answer

I do not understand you. There everything is in this note what should be. I have not seen such a transparent note for a long time. Always valid means that you can always find it at this address. The second address under which you will also find it depends on the voltage at the ADRS input. Based on information shared by colleague @inspector_electro it is easy to state that this stem is compact in its module.

inspector_electro · Answer

Exactly as you write. The ADRS foot is compact to ground. Well, what about the code? Am I making a mistake? if so, which one?

excray · Answer

First of all, the address is:
192 - Write and
193 Read,
or
194 Write and
195 Read. And not like you R-192 and W-194
In addition, the frame should look something like this:

Log in, to see the code

Of course, you have to convert it to BASCOM.

inspector_electro · Answer

I do not know if it's good, in addition I do not understand how to number the BS. I do not know if instead of x in the table should be understood as 0? Code: VB.netLog in, to see the code

Anonymous · Answer

I wrote earlier: and Truth?

inspector_electro · Answer

Schemat w paincie.

excray · Answer

I was more concerned with the schematic of this head. As I understand it, you do not have one. However, it is necessary for the correct setting of parameters. Try with the values I gave you. Alternatively, change the value of the div a little by +/- a dozen or so points.

inspector_electro · Answer

R-MIK write which addresses exactly because the scanner does not detect anything else. Besides, even the datasheet shows that it is 192, 194.

excray · Answer

Forgive me, fix. This system does not work in Read mode. Hence the situation. You can only send data to it.

inspector_electro · Answer

I thought so because there is no datasheet in addition as a colleague wrote earlier even odd. I do not understand just which address if the ADRS output is connected to ground? 192?

Anonymous · Answer

See how IIC supports: Code: C / C++Log in, to see the code Note that when an error occurs, I know where. You completely ignore the mistakes. What's worse, the system did not respond and you write to him. If you read from a system that did not answer, what would you read? Analyze what has been written above and draw conclusions and do not write give me everything on the tray.

inspector_electro · Answer

I end the topic, because there are teachers who do not understand some, and they like to play with their grandmother. I have lost the desire for further lessons with this arrangement.

NJW1504 PLL Synthesizer: I2C Support, Setup & Troubleshooting for BASCOM Users

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