[MCC134 - Sampling Time]

How to change the Sampling time of thermal data (ie: number of points per second).

I see the Python library has a method update_interval_write() and it has values only between 1-255.
update_interval_write(5)-  Does this mean sample at every 5 second interval?

Say if I want 10S/s how to configure in the code?

Thanks

[script to control Digital IO supplies from Protocol viewer]

@attila
Can the DIO pins voltage changed individually?
Say DIO 25  = 3.3V and DIO 27 = 2.5V.
When I tried using the Supplies tool, that all the pins has the same Digital voltage.
Is this hardware or software limitation. or Am I missing something?
Thanks
 

[script to control Digital IO supplies from Protocol viewer]

15 minutes ago, attila said:

Hi @arang

Yes, see the manual and examples.

 

 

Found it. thx

[script to control Digital IO supplies from Protocol viewer]

@attila
Digital Discovery has 16 I/O pins.
say I am using DIO24 
To enable output - what is the mask?

is DIO24  set as DIO -0 in the code? i.e  mask bit LSB 0th bit?

dwf.FDwfDigitalIOOutputEnableSet(hdwf, ? ) 

Thanks

[script to control Digital IO supplies from Protocol viewer]

Hi,
I can find example scripts to Read/write  from the protocol viewer. (Read(address),write(address)).

 have to set the DIO27 supply to 3.3V and vary it programmatically .
I couldn't find any sample scripts to control Digital I/O supplies for Digital discovery!
All the examples/references,  I found  are Analog discovery Analog supplies controls.
Can you please point to manual/reference.
Thanks

 

[Digital Discovery I2C - 16 bit memory addressing]

Thanks It works. The device I was using supported only one byte read at a time. Auto increment read was causing the issues.
Thanks

[Digital Discovery I2C - 16 bit memory addressing]

@attila Thanks
Let me be clear. I would like Digital Discovery to be the Master and my device to Slave.
Should I be using Master or Spy/Slave tab?
If I have to use Slave tab, Where can we specify the sub address to read 16bit  address.
From the pictures you sent, you have specified Sub address in Master tab and how it can be used by Slave tab?
Thanks.

[Digital Discovery I2C - 16 bit memory addressing]

Thanks again @attila
I see there is only one byte sent after the start!Fixed it now.

Please see below, even after sending 2 bytes, when I try to write and read, I get garbage values from the device.
What am I missing?

Note: SCL, SDA is pulled up using 1k resistor and connected to DIO 27 - 3.3V supply.
Thanks for your help.

[Digital Discovery I2C - 16 bit memory addressing]

@attila Thanks.
I am using the h as prefix and still, the readback values from the device is not correct! See picture below.
Note: I have connected SCL, SDA using a pull up resistor to DIO 27 ( 3.3V ) 
In the picture below- tried to  write bytes 1 2 3 ,  but read back as 2,2,2..
The device Ack's and I see no issue. But the readback values are wrong!
Thanks

[Digital Discovery I2C - 16 bit memory addressing]

10 hours ago, JColvin said:

Hi @arang,

I believe that only 7-bit addressing is supported, at least as per the post from the developer here:

which is also still the case in the latest beta version (3.21.29, https://forum.digilent.com/topic/8908-waveforms-beta-download/) at time of writing. I have not heard any plans to change this.

Thanks,
JColvi

 

Thanks @JColvin

The device slave address is 7 bit address. The device memory addressing is 16 bit .
I understand that we have to use sub address in the Waveform. How the sub address need to be specified ? say 00h 00h ?
I see the device is reading garbage, the readback values are wrong!

[Digital Discovery I2C - 16 bit memory addressing]

Hi,
I have a i2c device that uses a 16 bit memory address. Is there an option in waveforms protocol to specify it? I see I2C protocol viewer uses 8 bit address!
Thanks

[Digital Discovery I2C]

Thanks and the DIO's configuration helps.
 

[Digital Discovery I2C]

Is there a way to change Rise/fall times, dutycycle, skew etc  using I2C Protocol viewer in Waveform?