LuatOS/module/Air8000/project/整机开发板出厂工程/user/airaudio.lua

local airaudio = {}

local i2c_id = 0            -- i2c_id 0


local pa_pin = 162           -- 喇叭pa功放脚
local power_pin = 164         -- es8311电源脚


local i2s_id = 0            -- i2s_id 0
local i2s_mode = 0          -- i2s模式 0 主机 1 从机
local i2s_sample_rate = 16000   -- 采样率
local i2s_bits_per_sample = 16  -- 数据位数
local i2s_channel_format = i2s.MONO_R   -- 声道, 0 左声道, 1 右声道, 2 立体声
local i2s_communication_format = i2s.MODE_LSB   -- 格式, 可选MODE_I2S, MODE_LSB, MODE_MSB
local i2s_channel_bits = 16     -- 声道的BCLK数量

local multimedia_id = 0         -- 音频通道 0
local pa_on_level = 1           -- PA打开电平 1 高电平 0 低电平
local power_delay = 3           -- 在DAC启动前插入的冗余时间，单位100ms
local pa_delay = 100            -- 在DAC启动后，延迟多长时间打开PA，单位1ms
local power_on_level = 1        -- 电源控制IO的电平，默认拉高
local power_time_delay = 600    -- 音频播放完毕时，PA与DAC关闭的时间间隔，单位1ms
local taskName = "task_tts"

local play_string = "降功耗，找合宙"
local voice_vol = 55        -- 喇叭音量
local mic_vol = 80          -- 麦克风音量

function audio_setup()
    sys.wait(100)

    i2c.setup(i2c_id,i2c.FAST)
    i2s.setup(i2s_id, i2s_mode, i2s_sample_rate, i2s_bits_per_sample, i2s_channel_format, i2s_communication_format,i2s_channel_bits)

    audio.config(multimedia_id, pa_pin, pa_on_level, power_delay, pa_delay, power_pin, power_on_level, power_time_delay)
    audio.setBus(multimedia_id, audio.BUS_I2S,{chip = "es8311",i2cid = i2c_id , i2sid = i2s_id, voltage = audio.VOLTAGE_1800})	--通道0的硬件输出通道设置为I2S

    audio.vol(multimedia_id, voice_vol)
    audio.micVol(multimedia_id, mic_vol)

end

local function audio_callback(id, event)
    local succ,stop,file_cnt = audio.getError(0)
    if not succ then
        if stop then
            log.info("用户停止播放")
        else
            log.info("第", file_cnt, "个文件解码失败")
        end
    end
    sysplus.sendMsg(taskName, MSG_PD)
end


function airaudio.init()
    gpio.setup(24, 1, gpio.PULLUP)          -- i2c工作的电压域
    sys.wait(100)
    gpio.setup(power_pin, 1, gpio.PULLUP)   -- 打开音频编解码供电
    gpio.setup(pa_pin, 1, gpio.PULLUP)      -- 打开音频放大器
    audio_setup()
    audio.on(0, audio_callback)
end


return airaudio