pt2259的完整控制程序

PT2259是一款带有EQ、音量、平衡和混响控制功能的芯片，其控制程序需要更加复杂一些。以下是一个基本的PT2259控制程序示例，您可以根据自己的需求进行修改和调整：

#include <Wire.h>

#define PT2259_ADDR 0x88

// PT2259 register addresses
#define VOL_L_REG 0x00
#define VOL_R_REG 0x01
#define BASS_REG  0x02
#define TREBLE_REG 0x03
#define BALANCE_REG 0x04
#define EFFECT_REG 0x05

void setup() {
  Wire.begin();
  // Set initial values
  set_volume(0, 0);
  set_bass(0);
  set_treble(0);
  set_balance(0);
  set_effect(0);
}

void loop() {
  // Increase volume by 2 dB every 500 ms
  for (int vol = -78; vol <= 0; vol += 2) {
    set_volume(vol, vol);
    delay(500);
  }
}

void set_volume(int left, int right) {
  // Convert dB to attenuation code
  int att_left = (-left) / 2;
  int att_right = (-right) / 2;

  // Clamp attenuation code to valid range
  att_left = max(att_left, 0);
  att_left = min(att_left, 63);
  att_right = max(att_right, 0);
  att_right = min(att_right, 63);

  // Write attenuation codes to PT2259
  Wire.beginTransmission(PT2259_ADDR);
  Wire.write(VOL_L_REG);
  Wire.write(att_left);
  Wire.write(att_right);
  Wire.endTransmission();
}

void set_bass(int bass) {
  // Convert dB to gain code
  int gain = bass + 12;

  // Clamp gain code to valid range
  gain = max(gain, 0);
  gain = min(gain, 15);

  // Write gain code to PT2259
  Wire.beginTransmission(PT2259_ADDR);
  Wire.write(BASS_REG);
  Wire.write(gain);
  Wire.endTransmission();
}

void set_treble(int treble) {
  // Convert dB to gain code
  int gain = treble + 12;

  // Clamp gain code to valid range
  gain = max(gain, 0);
  gain = min(gain, 15);

  // Write gain code to PT2259
  Wire.beginTransmission(PT2259_ADDR);
  Wire.write(TREBLE_REG);
  Wire.write(gain);
  Wire.endTransmission();
}

void set_balance(int balance) {
  // Convert balance to balance code
  int balance_code = balance + 7;

  // Clamp balance code to valid range
  balance_code = max(balance_code, 0);
  balance_code = min(balance_code, 15);

  // Write balance code to PT2259
  Wire.beginTransmission(PT2259_ADDR);
  Wire.write(BALANCE_REG);
  Wire.write(balance_code);
  Wire.endTransmission();
}

void set_effect(int effect) {
  // Convert effect to effect code
  int effect_code = effect + 3;

  // Clamp effect code to valid range
  effect_code = max(effect_code, 0);
  effect_code = min(effect_code, 7);

  // Write effect code to PT2259
  Wire.beginTransmission(PT2259_ADDR);
  Wire.write(EFFECT_REG);
  Wire.write(effect_code);
  Wire.endTransmission();
}

该程序使用Wire库向PT2259芯片发送I2C命令，以控制音量、低音、高音、平衡和混响等参数。其中，set_volume、set_bass、set_treble、set_balance和set_effect函数分别用于设置相应的参数。程序中的示例将音量从-78 dB逐渐增加到0 dB，并在每次更改后等待500毫秒。注意，这个程序并不完整，需要按照实际的硬件连接和使用情况进行修改和调整。