Current sensing questions for S12ZVM

[yoongonkim]

Q1. I want to know mapping of ADC channels and current sensors

Q2. I use DC motor. So, i want to use two ADC channels(+,- direction).

      Is it posible to measure bidirection current(+,-)?

[iggi]

Hi,

Did you check the S12ZVM ref. manual? Please, see section 1.8 Internal Signal Mapping and 1.13.3.1 Motor Control Loop Overview.

http://cache.freescale.com/files/microcontrollers/doc/ref_manual/MC9S12ZVMRMV1.pdf

Is the DC motor brushless or not?

ADC measures the voltage actually. The current can be measured by Current Sense Amplifiers and routed to ADC.