Hi Friends
I am trying to use ads1263 to read two different inputs simultaneously (two single ended signal) , one input with ADC1 and another one with ADC2 . unfortunately I have problem in reading ADC2 . Both adc's are in 400sps and I start both adc's conversion almost simultaneous .
what I am doing is follows :
1-first I send stop1 and stop2
2-second I set INPUTMUX's and
3-third I send start1 and start2
4- after I see DRDY low I read adc1 which is fine and then read adc2 which is all zero bits.
I repeat this cycle and can not see anything coming out of adc2. When I do not send stop2 before changing InpMux I can read the adc2 as well as adc1 but I am not sure if both conversions are started at same time . I need to read both inputs at the same time and in 2.5msec time window .
Datasheet says on page 121 , to change the input channel you need to stop both adc's and set the inpmux registers and then start both adc's and after DRDY low you can read the adc's sequentially , but it is not working for me.
I would be so thankful if you can help me .