Hi expert,
my projet use ads7953 as adc use. my config is
spi config mode:0 speed ：20000000
in order to make ads7953 work at auto 2 mode, write some register blow:
wr 0x4200
wr 0x400f
wr 0x9140
wr 0x3c40
wr 0x3840
wr 0x0000
then read
read result is :
0x0000 chn=0 0 vol=0 0
0x0800 chn=0 0 vol=2048 2048
0x1000 chn=1 1 vol=0 0
0x1800 chn=1 1 vol=2048 2048
0x2000 chn=2 2 vol=0 0
0x2800 chn=2 2 vol=2048 2048
first is read value , chn is adc port index, vol is adc val,
my question is :
1. why chn is reduplicate?
2. why adc value is not reflect the real adc val？
3.how can i modify register val to make ads7953 work proper?
Thank you.
