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October 21, 2015 00:59
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ArduinoとFlashairを使ってスマホからサーボモーターを動かす。index.htmlファイルをFlashairに保存しといて、スマホからアクセスする。
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| #include <Servo.h> | |
| #include <iSdio.h> | |
| #include <utility/Sd2CardExt.h> | |
| const int ctrl_pin = 2; | |
| Servo servo; | |
| const int chipSelectPin = 4; | |
| Sd2CardExt card; | |
| uint8_t buffer[512]; | |
| void printByte(uint8_t value) { | |
| Serial.print(value >> 4, HEX); | |
| Serial.print(value & 0xF, HEX); | |
| } | |
| void printBytes(uint8_t* p, uint32_t len) { | |
| for (int i = 0; i < len; ++i) { | |
| printByte(p[i]); | |
| } | |
| } | |
| void setup() { | |
| // Initialize UART for message print. | |
| Serial.begin(9600); | |
| while (!Serial) { | |
| ; | |
| } | |
| // Initialize SD card. | |
| Serial.print(F("\nInitializing SD card...")); | |
| if (card.init(SPI_HALF_SPEED, chipSelectPin)) { | |
| Serial.print(F("OK")); | |
| } else { | |
| Serial.print(F("NG")); | |
| abort(); | |
| } | |
| memset(buffer, 0, 0x200); | |
| servo.attach(ctrl_pin); | |
| } | |
| void loop() { | |
| char str[5]; | |
| int val; | |
| if (card.readExtMemory(1, 1, 0x1000, 0x200, buffer)) { | |
| Serial.print("byte: "); | |
| printBytes(buffer, 8); | |
| Serial.println(""); | |
| str[0] = buffer[0]; | |
| str[1] = buffer[1]; | |
| str[2] = buffer[2]; | |
| str[3] = buffer[3]; | |
| str[4] = 0; | |
| val = atoi(str); | |
| Serial.println(val); | |
| servo.write(val); | |
| } | |
| delay(2000); | |
| } |
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| <html> | |
| <head> | |
| <title>Title</title> | |
| <script> | |
| var datawrite = "http://flashair/command.cgi?op=131&ADDR=0&LEN=3&DATA="; | |
| function servo_ctrl() { | |
| var str = datawrite + document.getElementById('range').value; | |
| console.log(str); | |
| var xhr = new XMLHttpRequest(); | |
| xhr.open("GET", str); | |
| xhr.send(null); | |
| } | |
| function change() { | |
| servo_ctrl(); | |
| } | |
| function st_click() { | |
| servo_ctrl(); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <div> | |
| </div> | |
| <div> | |
| <form> | |
| <input type=range id="range" min=0 max=160 onchange="change()"> | |
| <button id="start" onclick="st_click()">send</button> | |
| </form> | |
| </div> | |
| </body> | |
| </html> |
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