Specifying Pin Modes And Pin Numbers

Pin Modes

Before utilizing a pin, you must set its pin mode. Check the APIs for methods that begin with set_pin_mode in their name for the available modes.

Specifying Pin Numbers

Valid Pin Numbers

A subset of the GPIO PINS is available when setting pin modes. The valid pins available for a specific pin mode are shown in the API. For example:

 def set_pin_mode_digital_input(self, pin_number, callback)

    Set a pin as a digital input.

    :param pin_number: GPIO pin number.

    Valid pins:

    4, 5, 12, 13, 14, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 32, 33

    :param callback: callback function

    callback returns a data list:

    [report_type, pin_number, pin_value, raw_time_stamp]

    The report_type for digital input pins = 2

The set of valid pins are based on the work of Andreas Spiess

GPIO pin numbers are used for all pin modes.

SPI Pins

Telemetrix uses the standard SPI pins. Only the chip select pins (cs) need to be specified.

CS =    5
MOSI =  23
MISO =  19
SCK =   18

I2C Pins

Telemetrix uses the standard I2C pins. (SDA) - 21 (SCL) - 22