[Oberon] PO2013 - Real time measurement

Jörg Straube joerg.straube at iaeth.ch
Sun Mar 24 23:01:49 CET 2019


What exactly is your intended setup?

Do you want to connect a HW probe to the PIC and the PIC to the Oberon system?
If this your intended setup it is in my point a little strange as you could connect the HW probe directly to the Oberon system without using the mentioned PIC chip. It obviously depends on the probe you want to connect. You did not mention what probe you want to connect.

Try to see the Oberon system as kind of PIC with the benfit of being programmed in Oberon instead of eg C for the PIC.


> Am 24.03.2019 um 16:13 schrieb Tomas Kral <thomas.kral at email.cz>:
> Hi,
> Trying to revive an old topic, using PIC to collect data for Oberon
> System.
> Reading specs of
> [1] PIC16F84A
> [2] PIC16F818
> [1] Seems a good starter, but [2] has a lot more features, e.g A/D,
> also SPI / I2C.
> Manual gives these signals on SPI
> Serial Data Out (SDO)        RB2/SDO/CCP1
> Serial Data In (SDI)         RB1/SDI/SDA
> Serial Clock (SCK)           RB4/SCK/SCL
> Slave Select (SS)            RB5/SS
> And this on I2C
> I2C Slave mode (7-bit address)
> I2C Slave mode (10-bit address)
> I2C Slave mode (7-bit address) with Start and
>  Stop bit interrupts enabled to support Firmware
>  Master mode
> I2C Slave mode (10-bit address) with Start and
>  Stop bit interrupts enabled to support Firmware
>  Master mode
> I2C Firmware Controlled Master mode with Start
>  and Stop bit interrupts enabled, slave is Idle
> I am zero on I2C, but have some little knowledge of SPI, but the
> signals above are named differently to Oberon RISC5 docs??
> I like this picture on SPI chip select addressing.
> Oberon GPIO is 8 bit, some can be configured to I2C or SPI signals, I
> hope.
> This is now long term goal of mine>
> I want to achieve an interconnection of field instruments with
> Oberon system through PIC, incl. A/D, D/D, etc conversions. So one could
> measure temperature, and other physical qualities. And at the same time
> drive some actions on the controlled process, valves open/close, servos
> on/off. Ideally with proportional regulation.
> I wish to start with a simple thermistor temperature probe, A/D
> conversion, and some trending in Oberon system.
> -- 
> Tomas Kral <thomas.kral at email.cz>
> <SPI_slaves.png>
> --
> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
> https://lists.inf.ethz.ch/mailman/listinfo/oberon

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