ゆっくりラズパイ活用講座

$ platformio device list /dev/ttyACM0 ------------ Hardware ID: USB VID:PID=239A:000E SER=HIDBE LOCATION=1-1.2:1.0 Description: ItsyBitsy 32u4 3V 8MHz /dev/ttyAMA0 ------------ Hardware ID: 3f201000.serial Description: ttyAMA0

$ platformio boards "itsybitsy" Platform: atmelavr ========================================================================== ID MCU Freq Flash RAM Name ---------------- ---------- ----- ----- ------ --------------------------- itsybitsy32u4_3V ATMEGA32U4 8MHz 28KB 2.50KB Adafruit ItsyBitsy 3V/8MHz itsybitsy32u4_5V ATMEGA32U4 16MHz 28KB 2.50KB Adafruit ItsyBitsy 5V/16MHz

$ vi src/led.ino #define BUILTIN_LED 13 void setup() { pinMode(BUILTIN_LED, OUTPUT); } void loop() { digitalWrite(BUILTIN_LED, HIGH); delay(2000); digitalWrite(BUILTIN_LED, LOW); delay(1000); }

$ vi detectKey.ino #include <Wire.h> #define CARDKB_ADDR 0x5F void setup() { 　Serial1.begin(115200); 　Wire.begin(); } void loop() { 　Wire.requestFrom(CARDKB_ADDR, 1); 　while(Wire.available()) { 　　int key = Wire.read(); 　　if (key != 0) { 　　　if ((key>=0x20)&&(key<0x7F)) { 　　　　Serial1.print("0x"); 　　　　Serial1.print(key, HEX); 　　　　Serial1.print(":"); 　　　　Serial1.println((char)key); 　　　} else { 　　　　Serial1.print("0x"); 　　　　Serial1.println(key, HEX); 　　　} 　　} 　} }

#include <Wire.h>
#include <Keyboard.h>

#define CARDKB_ADDR 0x5F

boolean emulate = true;

void setup()
{
	Serial1.begin(115200);
	Wire.begin();
	Keyboard.begin();
}

void writeln(char *cmd) {
	while (*cmd) {
		Keyboard.write(*cmd);
		cmd++;
	}
}

void loop()
{
	Wire.requestFrom(CARDKB_ADDR, 1);
	while(Wire.available()) {
		byte key = Wire.read();
		if (key != 0) {
			if (key==0xAF) { // [fn]+[SPACE]
				if (emulate) {
					Serial1.println("stop keyboard emulating");
					Keyboard.end();
					emulate = false;
				} else {
					Serial1.println("start keyboard emulating");
					Keyboard.begin();
					emulate = true;
				}
			} else {
				if (emulate) {
					switch(key) {
						case 0x31: // 1 - (ILR) Classic FM
							writeln("mplayer http://media-ice.musicradio.com/ClassicFMMP3\n"); break;
						case 0x32: // 2 - BBC World Service
							writeln("mplayer http://stream.live.vc.bbcmedia.co.uk/bbc_world_service\n"); break;
						case 0x33: // 3 - CRI (1008 kHz English)
							writeln("mplayer http://sk.cri.cn/am1008.m3u8\n"); break;
						case 0x34: // 4 - (ILR) Classic FM at the Movies
							writeln("mplayer http://media-ice.musicradio.com/ClassicFM-M-Movies\n"); break;
						case 0x66: // f: forward in playing list
							Keyboard.write(0x3e); break; // >
						case 0x62: // b: backward in playing list
							Keyboard.write(0x3c); break; // <
						case 0x64: // d: decrease volume
							Keyboard.write(0x2f); break; // /
						case 0x69: // i: increase volume
							Keyboard.write(0x2a); break; // *
						case 0x70: // p: pause
							Keyboard.write(key); break;
						case 0x71: // q: stop playing
							Keyboard.write(key); break;
						case 0x6d: // m
							writeln("sudo mount /dev/sda1 /mnt/target/; cd /mnt/target/\n"); break;
						case 0x75: // u
							writeln("sudo umount /mnt/target\n"); break;
						case 0x2c: // , - login user
							writeln("pi\n"); break;
						case 0x2e: // . - login passwd
							writeln("[password]\n"); break;
						case 0x63: // c
							Keyboard.write(0x03); break; // Ctrl + c
						case 0x73: // s
							writeln("sudo shutdown now\n"); break;
						default:
							break;
					}
				} else {
					Keyboard.write(key);
				}
			}
		}
	}
	delay(10);
}