software SPI

[cartic]

Hello everyone,
Iam using RFPIC 12F675F. It does not have a SPI. I need to get data from LM71, temperature sensor. LM 71 has 5 pins(2 for power and GND), one for Chip select(CS'), one for clock and other for data. I am using the general purpose pins(GP1,GP2,GP4,GP5)for clock,data,poweron and chip select signals respectively.
I would like to send 2 byte command to LM71, and receive 2 byte temperature data from it. Spec. sheet says we need 16 clocks for transmit or receive.
I can send the clock by making pin high and lowering it, but how do I read the data from the sensor at the rising edge of the clock.

I know, I have given a lot of details, but my question is very simple?
How do I make Master(in SPI transfer), detect its own clock edge and then read the data?

Thanks for any help

ks

[PCM programmer]

The CCS driver files, DS1302.C and ADS8320.C show how
to do software SPI. Look for them in this folder:
c:\Program Files\Picc\Drivers

[cartic]

Thanks for the help
sk

[RM]

Hi,

I connected PIC16F84A to ADS8320 but am only getting the high byte correct, low byte is jumping too much. Need your help desperately.I am using the builtin ADS8320.c program.

Thanks.