Hello,

I'm using an RCM4100 which should communicate with an external device
through a clocked-serial port (CS, MISO, MOSI, SCK). The RCM is the
Master, the other device the Slave.

With the Rabbit 4000 I/O LIB Utility I configured the serial C as follow:

Serial Port C
Clocked, internal clock
Tx Pin: PC2
Rx Pin: PC3
Bit order: Normal (LSB)
Timer Synchronization: None
Clock polarity: Normal, inactive high
Serial Clock (output): PC7

Also I configured PC4 as a general purpose output pin: this is the CS.
Well, I have few questions I can't answer after reading the
Microprocessor Manual and some examples in DC10.21.

1) How should I define the data rate - that is the clock frequency?

2) I tried to use the SPI.lib but I'm afraid it isn't the correct way
to use my configuration described above. So... what instructions I
need to either transmit a byte to the slave or transmit-while-receive
a byte to/from slave?

3) The CS pin needs to be handled manually, doesn't it?

Thank for any advice,
Marco / iw2nzm

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