Hi Gerald,
Here are my findings on reading the ADC lines for power measurements
Read the CARKIT_ANA_CTRL
OMAP3 beagleboard.org # imd 0x48 0xBB 10
00bb: 00 00 00 00 00 1f 34 64 7f 6c 75 64 20 01 17 01 …4d.lud …
Write 0x08 to CARKIT_ANA_CTRL (SEL_MADC_MCPC Routes all four MCPC pins to the MADC for)
OMAP3 beagleboard.org # imw 0x48 0xBB 0x08 1
Read the CARKIT_ANA_CTRL
OMAP3 beagleboard.org # imd 0x48 0xBB 10
00bb: 08 08 08 00 00 1f 34 64 7f 6c 75 64 20 01 17 01 …4d.lud …
Read the ADCIN3 and ADCIN5
GPCH3_LSB 0x0000 003D
GPCH3_MSB 0x0000 003E
GPCH5_LSB 0x0000 0041
GPCH5_MSB 0x0000 0042
OMAP3 beagleboard.org # imd 0x4A 0x3D 10
003d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 …
Reads all zeros
Please review the sequence, the reg details.
Thanks & Regards,
Khasim