Initial checkin of piropiro version.

2025-11-08 16:53:28 +03:00 · 2015-03-31 23:59:16 +09:00
parent b9e5d5ecc0
commit d082eab6f8
9 changed files with 233 additions and 0 deletions
--- a/mozc-piropiro/arduino/piropiro/piropiro.ino
+++ b/mozc-piropiro/arduino/piropiro/piropiro.ino
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Firmware of piropiro (party horn) Bluetooth keyboard.
+ */
+
+#define V_REF 5.0
+#define PIN_LED 13
+#define N_AD_SAMPLES 10
+
+#define INTERVAL_MSEC 20
+#define COMMIT_TIME (600 / INTERVAL_MSEC)
+
+#define ROWS 5
+#define COLS 9
+
+const char* characters[ROWS * COLS] = {
+  "a", "i", "u", "e", "o",
+  "ka", "ki", "ku", "ke", "ko",
+  "sa", "si", "su", "se", "so",
+  "ta", "ti", "tu", "te", "to",
+  "na", "ni", "nu", "ne", "no",
+  "ha", "hi", "hu", "he", "ho",
+  "ma", "mi", "mu", "me", "mo",
+  "ya", "ya", "yu", "yu", "yo",
+  "wa", "wo", "nn", ",", "."
+};
+
+int column = 0;
+int vowel = 0;
+int release_duration = 0;
+
+void setup() {
+  Serial.begin(115200);
+  pinMode(PIN_LED, OUTPUT);
+  column = 0;
+  vowel = 0;
+}
+
+float getVoltage(int ch) {
+  return analogRead(ch) * V_REF / 1023;
+}
+
+float getAverageVoltage(int ch) {
+  float sum = 0.0;
+  for (int i = 0; i < N_AD_SAMPLES; i++) {
+    sum += getVoltage(ch);
+  }
+  return sum / N_AD_SAMPLES;
+}
+
+float voltageToLength(float voltage) {
+  return 648 - voltage * 268;
+}
+
+void loop() {
+  float length = voltageToLength(getAverageVoltage(0));
+  if (length > 350) {
+    digitalWrite(PIN_LED, LOW);
+  } else {
+    digitalWrite(PIN_LED, HIGH);
+    if (length < 50) {
+      if (vowel > 0) {
+        vowel = 0;
+        column ++;
+        if (column >= COLS) {
+          column = 0;
+        }
+        release_duration = 0;
+      } else if (release_duration > COMMIT_TIME) {
+        vowel = 0;
+        column = 0;
+      } else if (column > 0) {
+        release_duration ++;
+      }
+    } else {
+      int target_vowel = (length - 80) / 40 + 1;
+      if (target_vowel > 5) target_vowel = 5;
+      if (vowel < target_vowel) {
+        if (column > 0 || vowel > 0) {
+          Serial.print("\b");
+        }
+        vowel ++;
+        int current_character = vowel - 1 + column * 5;
+        Serial.print(characters[current_character]);
+      }
+    }
+  }
+  delay(INTERVAL_MSEC);
+}
+