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Time-aware GPIO


A sample application that can be used with any supported boards. eg. RPL. prints configuration info to the console. Below functionalities are tested:

  1. Periodic pulse generation (an Oscilloscope or loopback may be required)

  2. Input pulse timestamping (a pulse generator or loopback may be required)

Building and Running

This application can be built and executed as follows:

# From the root of the zephyr repository
west build -b intel_rpl_crb samples/drivers/misc/timeaware_gpio

To build for another supported board, change “intel_rpl_crb” to that board’s name (if supported).

Sample Output

*** Booting Zephyr OS build zephyr-v3.4.0-4166-g52b34a310c67 ***
[TGPIO] Bind Success
[TGPIO] Time now: 00000001477ed72f
[TGPIO] Running rate: 19200000
[TGPIO] Periodic pulses start at: 0000000148a3cf2f
[TGPIO] timestamp: 0000000000000000, event count: 0000000000000000
[TGPIO] timestamp: 0000000148a3cf31, event count: 0000000000000001
[TGPIO] timestamp: 0000000149c8c731, event count: 0000000000000002
[TGPIO] timestamp: 000000014aedbf31, event count: 0000000000000003
[TGPIO] timestamp: 000000014c12b731, event count: 0000000000000004
[TGPIO] timestamp: 000000014d37af31, event count: 0000000000000005
[TGPIO] timestamp: 000000014e5ca731, event count: 0000000000000006
[TGPIO] timestamp: 000000014f819f31, event count: 0000000000000007
[TGPIO] timestamp: 0000000150a69731, event count: 0000000000000008
[TGPIO] timestamp: 0000000151cb8f31, event count: 0000000000000009
[TGPIO] timestamp: 0000000152f08731, event count: 000000000000000a
[TGPIO] timestamp: 0000000154157f31, event count: 000000000000000b