Part Number: DAC8741H With some HART transmitters, we are getting random framing errors. (Roughly 1 % of the times). The modem status register shows 0x4806.
There are still a couple of bytes left (we know this based on the HART frame format) after the…
Hairuo,
I'm not sure why you're not able to get the data out of the DAC8741H. It looks like there is a HART signal, and the schematic looks correct.
I do want to make sure that the HART signal is getting to the device. When you measure the HART…
Pran,
This does have me a bit stumped, but I'm glad that reading one byte less than the FIFO count is working for you. I'm still checking with the digital designer to see if he has any input on this one.
Joseph Wu
Part Number: DAC8741H Other Parts Discussed in Thread: AFE881H1 , I am not sure if DAC8741 is generating a CD event when CD goes from ON to off?
It is not clear from data sheet since the datasheet only says CD event and does not describe what it is.
Part Number: DAC8741H Other Parts Discussed in Thread: DAC8742H , Hi,
We are looking to speed up development with the DAC8741, and I was wondering if there was any sample code and/or libraries/drivers for HART implementation. I've seen the header file of…
Part Number: DAC8741H Hi,
I previously asked a question about communicating over SPI with the DAC8741, which resulted in getting the expected communication. However, revisiting my PCB and code snippet, I am getting completely different results. I send…
Part Number: DAC8741H Hi, I have developed a test PCB with the DAC8741H, and am attempting to test initial communication to verify the hardware. However, I have been unable to establish SPI communication with the modem. Thus far, I have only been able…
Part Number: DAC8741H Hi
Trying to figure out the CRC for the DAC8741H. I know the polynomial is polynomial x8 + x2 + x + 1. Which i have interpret as a mask 0x87 is this correct?
What data bytes are included in the calculation? Is it just the data word…
Ryan,
First, it might be helpful to put up an oscilloscope plot of part of the communication. It would help absolve any timing and edge related issues.
Second, how do you clock out the data from the FIFO? The command should basically be a read from the…
Part Number: DAC8741H Hi team,
Is it possible for us to provide HART Stack code of DAC8741H for customer?
They want some example code of the commands specified by the HART protocol application layer, this will help a lot to customer development.
Thanks…
