09-19-2014 12:42 AM
回應: Use NI-8452 be a Slave device in SMBUS , NI-8452 will be interrupted in Communication.
09-19-2014 12:43 AM
Use NI-8452 be a Slave device in SMBUS , NI-8452 will be interrupte
02-11-2015 06:48 AM
@HarveyTW wrote:
Hi KK,
Lets make it clear. You are trying to use NI 8452 to be the MASTER then commute with another 8452 SLAVE.
And the vi shown in your picture is programed by yourself, not the example.
Here I suggest you use the example first, to make sure the hardware and other setting is correct and workable.
The following step could help you to find the example :
Step1. Open the Example Finder in LabVIEW
Step2. There are two examples you need, MAX MAX6953 I2C Master.vi and MAX MAX6953 I2C Slave.vi
(These two examples emulate a MAX6953 LED Matrix, and it is funcational after I tried it both on 8452 Master to 8452 Slave)
Step3. Set all parameter : the attachment
Pullup Enable set to TURE if you do not use external pull up resistor
Digit Intensity set to 15, it will make it much clear in slave
DO NOT forget to set the character to others, or you will see nothing even you connected successful
Please update if you have any futher progress
Harvey
Are these examples Suite version specific? I cannot find them on NI Developer 2012. 😞
Could someone upload them here?
Thanks.
02-11-2015 08:13 AM - edited 02-11-2015 08:17 AM
see if http://www.ni.com/tutorial/5767/en/ is helpful
You'll want to *read* the NI-845x Hardware and Software Manual
02-12-2015 05:23 AM
It turns out that the NI-8452 cards we have are new and the firmware on them was incompatible with August 2012 driver set I had installed on the PXI rack. I was getting invalid firmware errors. When I updated to the latest drivers then the examples above appeared and I can run them now.