Save and restore PWM, PCM, and clock state #568
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This prevents pigpio wave output from disrupting sound output performed at a later point. Issue: joan2937#567
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This prevents pigpio wave output from disrupting sound output performed at a later point.
Tests have been added and all tests run successfully. (Strangely, fewer than imagined tests fail when the state is not restored.) The C interface has been extended with two internal functions prefixed with
gpioInternal, which are only used for testing and are therefore not included in the header file.Issue: #567