48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
/*
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* Sample arduino sketch using contiki features.
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* We turn the LED on and off and allow setting the interval and the
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* brightness of the LED via coap.
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* Unfortunately sleeping for long times in loop() isn't currently
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* possible, something turns off the CPU (including PWM outputs) if a
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* Proto-Thread is taking too long. We need to find out how to sleep in
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* a Contiki-compatible way.
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* Note that for a normal arduino sketch you won't have to include any
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* of the contiki-specific files here, the sketch should just work.
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*/
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extern "C" {
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#include <stdio.h>
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#include "led_pwm.h"
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#define LED_PIN 4
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#define LED_STRING 3
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uint8_t pwm = 128;
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uint8_t period_100ms = 1; /* 1/10 second (period_100ms * 100ms) */
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uint16_t analog2_voltage = 0;
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uint16_t analog5_voltage = 0;
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}
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void setup (void)
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{
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arduino_pwm_timer_init ();
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rest_init_engine ();
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rest_activate_resource (&res_led_pwm, (char *)"led/pwm");
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rest_activate_resource (&res_led_period, (char *)"led/period");
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rest_activate_resource (&res_analog2_voltage, (char *)"analog/2");
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rest_activate_resource (&res_analog5_voltage, (char *)"analog/5");
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}
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void loop (void)
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{
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/* Use 255 - pwm, LED on merkur-board is wired to +3.3V */
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analogWrite (LED_PIN, 255 - pwm);
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analogWrite (LED_STRING, pwm);
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analog2_voltage = analogRead (A2) * 1600L / 1023L;
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analog5_voltage = analogRead (A5) * 1600L / 1023L;
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printf ("clock : %lu\nmillis: %lu\n", clock_time (), millis ());
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delay (period_100ms * 100);
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analogWrite (LED_PIN, 255); /* OFF: LED on merkur-board is wired to +3.3V */
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analogWrite (LED_STRING, 0);
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delay (period_100ms * 100);
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}
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