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15 seconds until it returns to 1 Hz, completing a single blinking cycle. This
18 Some PWM hardware cannot set the PWM period to 1 second to achieve the blinking
19 frequency of 1 Hz. This sample calibrates itself to what the hardware supports
26 The board must have an LED connected to a PWM output channel. The PWM
34 No additional wiring is necessary if ``pwm_led0`` refers to hardware that is
35 already connected to an LED on the board.
45 - connect PWM2 (PA0) to an LED
47 - connect PWM2 (PA0) to an LED
49 - connect PWM2 (PA0) to an LED
51 - connect PWM2 (PA0) to an LED
53 - connect PWM1 (PA8) to an LED
55 - connect PWM1 (PA8) to an LED
57 - connect GPIO2 to an LED
59 - connect GPIO2 to an LED
61 - connect GPIO2 to an LED
77 prints information to the board's console.