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ad7792 interface problem(urgent) please.......

Question asked by prashanterande on Aug 23, 2013
Latest reply on Aug 29, 2013 by prashanterande

Hello all,

i am trying to interface ad7792(16 bit adc) to mc9s12p128 uC

 

but my adc not get configured.

same adc i hv interface to mc9s08gt32 n working properly.

i think my problem in SPI initialization.


my configuration as  follows:

 

my initialization

/* irqcr=0xc0          ;for adc conversion complete

 

/* spi

/*spicr1=0x10     ;'

/*spicr2=0x5E         

/*spibr=0x77

 

i am trying to config adc as

/*  AN1+/AN-,differential inp,internal ref. both current source off. 0-100mv inp and continuous conversion mode

 

but i cant get external interrupt means conversion complete flag.

 

please help  me..!

 

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