{"version":"V2.0","versionNumber":"V2.4.2","type":"core2","components":[{"name":"page0","type":"lvgl_page","layer":0,"screenId":"builtin","screenName":"","id":"yZNR+zZkaeb_6W%v","createTime":1771835181050,"backgroundColor":"#ffffff","isLVGL":true,"isSelected":true}],"resources":[{"hardware":["hardware_button","hardware_pin_button","imu","speaker","touch","mic","sdcard"]}],"units":[],"hats":[],"caps":[],"chains":[],"bases":[],"plcmodules":[],"i2cs":[],"chainBus":[],"blockly":"<block type=\"basic_on_setup\" id=\"setup_block\" deletable=\"false\" x=\"50\" y=\"50\"><mutation isBegin=\"true\"></mutation><field name=\"UPDATEOP\">true</field><statement name=\"FUNC\"><block type=\"system_m5_begin\" id=\"?Ao@g!Y3ufBj$cLKF+/L\"><next><block type=\"lvgl_page_screen_load\" id=\"J4p;`Y=DwdKDV:h=?48K\"><field name=\"NAME\">page0</field></block></next></block></statement></block><block type=\"basic_on_loop\" id=\"loop_block\" deletable=\"false\" x=\"450\" y=\"50\"><mutation isUpdate=\"true\"></mutation><field name=\"UPDATEOP\">true</field><statement name=\"FUNC\"><block type=\"system_m5_update\" id=\"bZ!e4d{/.(~KOLz^lH=c\"></block></statement></block>","screen":[{"simulationName":"Built-in","type":"builtin","width":320,"height":240,"scale":0.77,"screenName":"","blockId":"","screenColorType":0,"rotation":1,"id":"builtin","createTime":1771835181047}],"logicWhenNum":0,"pythonCode":"# Afinador mínimo en Sol (G4)\n# M5Stack Core2 + Mic interno + barra de afinación\n\nimport M5\nfrom M5 import *\nimport time, math\n\nNOTE_G = 392.0  # Sol G4\n\nlabel_note = None\nlabel_freq = None\nlabel_status = None\n\nSAMPLE_RATE = 8000\nBUFFER_LEN  = 2048\n\nrec_data = None\n\n# Zona de la barra\nBAR_X = 10\nBAR_Y = 140\nBAR_W = 300\nBAR_H = 40\n\nMAX_CENTS = 50.0      # rango visual +/- 50 cents\nNEUTRAL_CENTS = 10.0  # zona OK (+/- 10)\n\n\ndef zero_cross_from_array(arr, sample_rate):\n    n = len(arr)\n    if n < 10:\n        return 0.0\n\n    prev = arr[0]\n    zero_cross = 0\n\n    for i in range(1, n):\n        v = arr[i]\n        # ignorar ruido muy pequeño\n        if abs(prev) < 1 and abs(v) < 1:\n            prev = v\n            continue\n        if (prev <= 0 and v > 0) or (prev >= 0 and v < 0):\n            zero_cross += 1\n        prev = v\n\n    if zero_cross < 2:\n        return 0.0\n\n    duration = n / float(sample_rate)\n    return (zero_cross / 2.0) / duration\n\n\ndef detect_freq(buf, sample_rate):\n    n = len(buf)\n    if n < 16:\n        return 0.0\n\n    mean = sum(buf) / n\n    arr = [b - mean for b in buf]\n\n    return zero_cross_from_array(arr, sample_rate)\n\n\ndef cents_diff(f_meas, f_ref):\n    if f_meas <= 0:\n        return 9999.0\n    return 1200.0 * math.log(f_meas / f_ref, 2.0)\n\n\ndef update_bar(diff_c):\n    \"\"\"\n    Dibuja la barra de afinación en la parte inferior.\n    diff_c en cents (puede ser None si no hay señal).\n    \"\"\"\n    # Limpiar zona de barra\n    M5.Lcd.fillRect(BAR_X, BAR_Y, BAR_W, BAR_H, 0x000000)\n\n    # Marco de la barra\n    M5.Lcd.drawRect(BAR_X, BAR_Y, BAR_W, BAR_H, 0x444444)\n\n    mid_x = BAR_X + BAR_W // 2\n    # Línea central (cents = 0)\n    M5.Lcd.drawLine(mid_x, BAR_Y, mid_x, BAR_Y + BAR_H, 0x555555)\n\n    # Zona \"OK\" en verde alrededor del centro\n    neutral_pix = int((NEUTRAL_CENTS / MAX_CENTS) * (BAR_W // 2))\n    if neutral_pix < 5:\n        neutral_pix = 5\n    M5.Lcd.fillRect(\n        mid_x - neutral_pix,\n        BAR_Y + BAR_H // 2 - 4,\n        neutral_pix * 2,\n        8,\n        0x07E0,  # verde\n    )\n\n    if diff_c is None or diff_c == 9999.0:\n        # Sin señal: no dibujamos el indicador\n        return\n\n    # Limitar rango visual\n    if diff_c > MAX_CENTS:\n        d = MAX_CENTS\n    elif diff_c < -MAX_CENTS:\n        d = -MAX_CENTS\n    else:\n        d = diff_c\n\n    # -MAX_CENTS -> izquierda ; +MAX_CENTS -> derecha\n    ratio = d / MAX_CENTS  # -1..1\n    max_offset = (BAR_W // 2) - 6\n    pos_x = int(mid_x + ratio * max_offset)\n\n    # Color del indicador según si está alto/bajo/ok\n    if diff_c > NEUTRAL_CENTS:\n        color = 0x001F  # azul (BAJA)\n    elif diff_c < -NEUTRAL_CENTS:\n        color = 0xF800  # rojo (SUBE)\n    else:\n        color = 0xFFFF  # blanco dentro de zona verde\n\n    # Rectángulo indicador\n    M5.Lcd.fillRect(\n        pos_x - 4,\n        BAR_Y + 4,\n        8,\n        BAR_H - 8,\n        color,\n    )\n\n\ndef setup():\n    global rec_data, label_note, label_freq, label_status\n\n    M5.begin()\n    Widgets.fillScreen(0x000000)\n\n    # Nota fija (blanco, tamaño medio)\n    label_note = Widgets.Label(\n        \"note\", 10, 15, 1.5,\n        0xFFFFFF, 0x000000, Widgets.FONTS.DejaVu18\n    )\n    label_note.setText(\"Zanfona Oscar: Sol\")\n\n    # Frecuencia medida (amarillo)\n    label_freq = Widgets.Label(\n        \"freq\", 10, 55, 2.0,\n        0xFFFF00, 0x000000, Widgets.FONTS.DejaVu18\n    )\n    label_freq.setText(\"f = --- Hz\")\n\n    # Estado SUBE/BAJA/OK (grande)\n    label_status = Widgets.Label(\n        \"status\", 10, 100, 2.2,\n        0xFFFFFF, 0x000000, Widgets.FONTS.DejaVu24\n    )\n    label_status.setText(\"\")\n\n    # Mic\n    Mic.begin()\n    Mic.setSampleRate(SAMPLE_RATE)\n\n    rec_data = bytearray(BUFFER_LEN)\n    print(\"BUFFER_LEN:\", BUFFER_LEN)\n\n    # Barra inicial sin señal\n    update_bar(None)\n\n\ndef loop():\n    global rec_data\n\n    M5.update()\n\n    # Grabamos un fragmento (~0.25 s)\n    Mic.record(rec_data, SAMPLE_RATE, False)\n    while Mic.isRecording():\n        time.sleep_ms(5)\n        M5.update()\n\n    # Calcular frecuencia\n    freq = detect_freq(rec_data, SAMPLE_RATE)\n\n    label_freq.setText(\"f = {:.1f} Hz\".format(freq))\n\n    if freq <= 0:\n        label_status.setText(\"Sin señal  \")\n        label_status.setColor(0xFFFFFF, 0x000000)\n        update_bar(None)\n        return\n\n    diff_c = cents_diff(freq, NOTE_G)\n\n    if diff_c > NEUTRAL_CENTS:\n        # Nota demasiado alta → BAJA la tensión\n        label_status.setText(\"BAJA   \")\n        label_status.setColor(0x001F, 0x000000)  # azul\n    elif diff_c < -NEUTRAL_CENTS:\n        # Nota demasiado baja → SUBE la tensión\n        label_status.setText(\"SUBE   \")\n        label_status.setColor(0xF800, 0x000000)  # rojo\n    else:\n        label_status.setText(\"OK     \")\n        label_status.setColor(0x07E0, 0x000000)  # verde\n\n    # Actualizar barra con los cents\n    update_bar(diff_c)\n\n    time.sleep_ms(40)\n\n\nif __name__ == \"__main__\":\n    setup()\n    while True:\n        loop()","customList":[]}