Part Number: TMS320F280040-Q1
Other Parts Discussed in Thread: SYSCONFIG
Hello,
I tried to use the example "buffdac_ex1_enable" on LaunchPad Piccolo. And measure the output on J7 - Pin 70 and 62. It is always 0.
I tried to modify the analog reference as "internal", which matches configuration for ASYSCTL of "DAC reference Voltage". And the result is the same.
What might go wrong in setting up DAC?
Thanks!
Crane
Hi Crane,
I tried to modify the analog reference as "internal", which matches configuration for ASYSCTL of "DAC reference Voltage". And the result is the same.
You updated both ASYSCTL and DAC sysconfig tabs to match the internal reference configuration, correct?
Please check if R13 and R15 are populated on your board.
Best,
Kevin
Hi Crane,
What are you setting 'dacVal' variable to? something other than 0 correct?
Yes, the example is for DAC reference Voltage and ASYSCTL as external. It didn't work and then I changed ASYSCTL as internal 2.5V. It still didn't work.
Your sysconfig settings match the below then?
Does it mean R13 and R15 need to be a certain value, not 0?
No I don't think so. Just wanted to make sure they weren't removed.
Best,
Kevin
I used the example code.
Yes, it is 2048, not 0.
I tried both internal and external for analog reference. Both don't work.
There weren't removed.
