prism-api-arduino

This is the PRISM Host library for Arduino allowing you to communicate with a PRISM SIMD coprocessor over I²C.

Click here to learn more about the PRISM SIMD coprocessor.

The default I²C address of PRISM SIMD is 0x52 and 0x51 is broadcast for all devices.

Connect the PRISM SIMD coprocessor

PRISM CoProcessor use P²Link - I²C with a low-level 8Bit-Parallelbus

Arduino PIN	Name	Description	Color
D2	PRISM_PIN_1LOW	Low Bit 0 P²Link	Blue
D3	PRISM_PIN_2LOW	Low Bit 1 P²Link	Blue
D4	PRISM_PIN_3LOW	Low Bit 2 P²Link	Blue
D5	PRISM_PIN_4LOW	Low Bit 3 P²Link	Blue
D6	PRISM_PIN_CLK_DEFAULT	Timing (Taktleitung)	White
D7	PRISM_PIN_NXT_DEFAULT	Entry-Flag (neuer Eintrag beginnt)	Yellow
D8	PRISM_PIN_7HIGH_DEFAULT	High Bit 0 P²Link	Green
D9	PRISM_PIN_8HIGH_DEFAULT	High Bit 1 P²Link	Green
D10	PRISM_PIN_9HIGH_DEFAULT	High Bit 2 P²Link	Green
D11	PRISM_PIN_10HIGH_DEFAULT	High Bit 3 P²Link	Green
D18	SDA	I2C: Serial data input / output	Orange
D19	SCL	I2C: Serial clock input	Gray
V	3.3V	Power In PRISM	Red
GND	GND	Ground	Black

The recommended voltage is 3.3V.

Board specific wiring

You will find pinout schematics for recommended board models below:

GPIO ESP32	Name	Color
36	PRISM_PIN_1LOW	Blue
39	PRISM_PIN_2LOW	Blue
34	PRISM_PIN_3LOW	Blue
35	PRISM_PIN_4LOW	Blue
32	PRISM_PIN_CLK_DEFAULT	White
33	PRISM_PIN_NXT_DEFAULT	Yellow
25	PRISM_PIN_7HIGH_DEFAULT	Green
26	PRISM_PIN_8HIGH_DEFAULT	Green
27	PRISM_PIN_9HIGH_DEFAULT	Green
14	PRISM_PIN_10HIGH_DEFAULT	Green
21	I²C SDA	Orange
22	I²C SCL	Gray
VIN	3.3V	Red
GND	GND	Black

Contributing

Contributions are welcome!

This Sensirion library uses clang-format to standardize the formatting of all our .cpp and .h files. Make sure your contributions are formatted accordingly:

The -i flag will apply the format changes to the files listed.

clang-format -i src/*.cpp inc/prism/*.h

License

See LICENSE.