Created
October 2, 2015 01:01
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| import time | |
| def init_leds(): | |
| for i in range(0, 4): | |
| f = open("/sys/class/leds/beaglebone:green:usr"+str(i)+"/trigger", "w") | |
| f.write("none") | |
| f.close() | |
| def change_led(ledid, state): | |
| f = open("/sys/class/leds/beaglebone:green:usr"+str(ledid)+"/brightness", "w") | |
| if (state): | |
| f.write("1") | |
| else: | |
| f.write("0") | |
| f.close() | |
| def get_led_status(): | |
| status = [] | |
| for i in range(0, 4): | |
| f = open("/sys/class/leds/beaglebone:green:usr"+str(i)+"/brightness") | |
| status.append(f.read()[0] == '1') | |
| f.close() | |
| return status | |
| def binary(): | |
| count = 0 | |
| for count in range(0, 16): | |
| for i in range(0, 4): | |
| if (count & (1 << i) != 0): | |
| change_led(i, True) | |
| else: | |
| change_led(i, False) | |
| time.sleep(0.5) | |
| for i in range(0, 4): | |
| change_led(i, False) |
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