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kidslab201704_arduino
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| <xml xmlns="http://www.w3.org/1999/xhtml"><block type="variables_set" id="28" inline="true" x="38" y="38"><field name="TYPE">Number</field><field name="VAR">blightness</field><value name="VALUE"><block type="math_number" id="29"><field name="NUM">0</field></block></value><next><block type="controls_while" id="30" inline="false"><value name="BOOL"><block type="logic_compare" id="31" inline="true"><field name="OP">LTE</field><value name="A"><block type="variables_get" id="32"><field name="TYPE">Number</field><field name="VAR">blightness</field></block></value><value name="B"><block type="math_number" id="33"><field name="NUM">130</field></block></value></block></value><statement name="DO"><block type="variables_set" id="34" inline="true"><field name="TYPE">Number</field><field name="VAR">blightness</field><value name="VALUE"><block type="math_arithmetic" id="35" inline="true"><field name="OP">ADD</field><value name="A"><block type="variables_get" id="36"><field name="TYPE">Number</field><field name="VAR">blightness</field></block></value><value name="B"><block type="math_number" id="37"><field name="NUM">3</field></block></value></block></value><next><block type="inout_analog_write" id="38" inline="true"><field name="PIN">10</field><value name="NUM"><block type="variables_get" id="39"><field name="TYPE">Number</field><field name="VAR">blightness</field></block></value><next><block type="delay_custom" id="40" inline="false"><value name="DELAY_TIME"><block type="math_number" id="41"><field name="NUM">50</field></block></value></block></next></block></next></block></statement><next><block type="delay_custom" id="42" inline="false"><value name="DELAY_TIME"><block type="math_number" id="43"><field name="NUM">1000</field></block></value><next><block type="inout_analog_write" id="44" inline="true"><field name="PIN">10</field><value name="NUM"><block type="math_number" id="45"><field name="NUM">0</field></block></value></block></next></block></next></block></next></block></xml> |
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| int trig_pin = 2; | |
| int echo_pin = 3; | |
| int dist = 0; | |
| void setup() { | |
| // put your setup code here, to run once: | |
| pinMode(trig_pin, OUTPUT); | |
| pinMode(echo_pin, INPUT); | |
| Serial.begin( 9600 ); | |
| } | |
| long Sonic_Timing(){ | |
| digitalWrite(trig_pin, LOW); | |
| delayMicroseconds(2); | |
| digitalWrite(trig_pin, HIGH); | |
| delayMicroseconds(20); | |
| digitalWrite(trig_pin, LOW); | |
| long duration = pulseIn(echo_pin,HIGH); | |
| return duration; | |
| } | |
| void loop() { | |
| // put your main code here, to run repeatedly: | |
| if ( Serial.available() > 0 ) { | |
| Serial.read(); | |
| dist = Sonic_Timing()/29/2; | |
| Serial.print( dist, 4 ); | |
| Serial.print( "\n" ); | |
| } | |
| } |
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