835 lines
22 KiB
C
835 lines
22 KiB
C
/*
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******************************************************************************
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* @file bsp_led.c
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* @author fire
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* @version V1.0
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* @date 2015-xx-xx
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* @brief wm8978驱动
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******************************************************************************
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* @attention
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*
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* 实验平台:野火 STM32 H750 开发板
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* 论坛 :http://www.chuxue123.com
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* 淘宝 :http://firestm32.taobao.com
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*
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******************************************************************************
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*/
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#include "./wm8978/bsp_wm8978.h"
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#include "./usart/bsp_debug_usart.h"
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#include "main.h"
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#include "./i2c/i2c.h"
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//#include "./Recorder/Recorder.h"
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#include "./delay/core_delay.h"
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extern I2C_HandleTypeDef I2C_Handle;
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uint32_t AudioTotalSize ; /* 音频文件的总大小 */
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uint32_t AudioRemSize; /* 将剩余的数据保存在音频文件中 */
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uint16_t *CurrentPos; /* 音频数据指针的当前位置 */
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DMA_HandleTypeDef hdma_spi2_tx;
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DMA_HandleTypeDef hdma_spi2_rx;
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/**
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*******************************************************************************************************
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* I2C控制WM8978配置部分
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*******************************************************************************************************
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*/
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static uint8_t WM8978_I2C_WriteRegister(uint8_t RegisterAddr, uint16_t RegisterValue);
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static uint16_t wm8978_ReadReg(uint8_t _ucRegAddr);
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static uint8_t wm8978_WriteReg(uint8_t _ucRegAddr, uint16_t _usValue);
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/*
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wm8978寄存器缓存
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由于WM8978的I2C两线接口不支持读取操作，因此寄存器值缓存在内存中，当写寄存器时同步更新缓存，读寄存器时
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直接返回缓存中的值。
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寄存器MAP 在WM8978(V4.5_2011).pdf 的第89页，寄存器地址是7bit， 寄存器数据是9bit
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*/
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static uint16_t wm8978_RegCash[] = {
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0x000, 0x000, 0x000, 0x000, 0x050, 0x000, 0x140, 0x000,
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0x000, 0x000, 0x000, 0x0FF, 0x0FF, 0x000, 0x100, 0x0FF,
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0x0FF, 0x000, 0x12C, 0x02C, 0x02C, 0x02C, 0x02C, 0x000,
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0x032, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
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0x038, 0x00B, 0x032, 0x000, 0x008, 0x00C, 0x093, 0x0E9,
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0x000, 0x000, 0x000, 0x000, 0x003, 0x010, 0x010, 0x100,
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0x100, 0x002, 0x001, 0x001, 0x039, 0x039, 0x039, 0x039,
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0x001, 0x001
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};
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/**
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* @brief 通过I2C将给定寄存器的字节写入音频编解码器
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* @param RegisterAddr: 待写入寄存器的地址
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* @param RegisterValue: 要写入目标寄存器的字节值
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* @retval 通信成功返回1，失败返回0
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*/
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static uint8_t WM8978_I2C_WriteRegister(uint8_t RegisterAddr, uint16_t RegisterValue)
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{
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uint16_t tmp;
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tmp = (RegisterValue&0xff) << 8;
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tmp |= ((RegisterAddr << 1) & 0xFE) | ((RegisterValue >> 8) & 0x1);
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if(HAL_I2C_Master_Transmit(&I2C_Handle,WM8978_SLAVE_ADDRESS,(uint8_t *)&tmp,2,WM8978_I2C_FLAG_TIMEOUT)==HAL_OK)
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{
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return 1;
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}
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else
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return 0;
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}
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/**
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* @brief 从cash中读回读回wm8978寄存器
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* @param _ucRegAddr ： 寄存器地址
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* @retval 寄存器值
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*/
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static uint16_t wm8978_ReadReg(uint8_t _ucRegAddr)
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{
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return wm8978_RegCash[_ucRegAddr];
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}
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/**
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* @brief 写wm8978寄存器
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* @param _ucRegAddr： 寄存器地址
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* @param _usValue： 寄存器值
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* @retval 0：写入失败
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* 1：写入成功
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*/
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static uint8_t wm8978_WriteReg(uint8_t _ucRegAddr, uint16_t _usValue)
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{
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uint8_t res;
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res=WM8978_I2C_WriteRegister(_ucRegAddr,_usValue);
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wm8978_RegCash[_ucRegAddr] = _usValue;
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return res;
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}
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/**
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* @brief 配置I2C GPIO，并检查I2C总线上的WM8978是否正常
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* @param 无
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* @retval 1,初始化成功;
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* 0,初始化失败。
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*/
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uint8_t wm8978_Init(void)
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{
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uint8_t res;
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I2cMaster_Init(); /* 初始化I2C接口 */
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res=wm8978_Reset(); /* 硬件复位WM8978所有寄存器到缺省状态 */
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wm8978_CtrlGPIO1(1); /* 控制WM8978的一个GPIO接口控制其为放音状态 */
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return res;
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}
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/**
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* @brief 修改输出通道1音量
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* @param _ucVolume ：音量值, 0-63
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* @retval 无
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*/
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void wm8978_SetOUT1Volume(uint8_t _ucVolume)
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{
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uint16_t regL;
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uint16_t regR;
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if (_ucVolume > 0x3F)
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{
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_ucVolume = 0x3F;
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}
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regL = _ucVolume;
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regR = _ucVolume;
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/*
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R52 LOUT1 Volume control
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R53 ROUT1 Volume control
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*/
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/* 先更新左声道缓存值 */
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wm8978_WriteReg(52, regL | 0x00);
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/* 再同步更新左右声道的音量 */
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wm8978_WriteReg(53, regR | 0x100); /* 0x180表示 在音量为0时再更新，避免调节音量出现的“嘎哒”声 */
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}
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/**
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* @brief 修改输出通道2音量
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* @param _ucVolume ：音量值, 0-63
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* @retval 无
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*/
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void wm8978_SetOUT2Volume(uint8_t _ucVolume)
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{
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uint16_t regL;
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uint16_t regR;
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if (_ucVolume > 0x3F)
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{
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_ucVolume = 0x3F;
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}
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regL = _ucVolume;
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regR = _ucVolume;
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/*
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R54 LOUT2 (SPK) Volume control
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R55 ROUT2 (SPK) Volume control
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*/
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/* 先更新左声道缓存值 */
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wm8978_WriteReg(54, regL | 0x00);
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/* 再同步更新左右声道的音量 */
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wm8978_WriteReg(55, regR | 0x100); /* 在音量为0时再更新，避免调节音量出现的“嘎哒”声 */
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}
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/**
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* @brief 读取输出通道1音量
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* @param 无
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* @retval 当前音量值
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*/
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uint8_t wm8978_ReadOUT1Volume(void)
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{
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return (uint8_t)(wm8978_ReadReg(52) & 0x3F );
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}
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/**
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* @brief 读取输出通道2音量
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* @param 无
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* @retval 当前音量值
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*/
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uint8_t wm8978_ReadOUT2Volume(void)
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{
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return (uint8_t)(wm8978_ReadReg(54) & 0x3F );
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}
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/**
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* @brief 输出静音.
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* @param _ucMute：模式选择
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* @arg 1：静音
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* @arg 0：取消静音
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* @retval 无
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*/
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void wm8978_OutMute(uint8_t _ucMute)
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{
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uint16_t usRegValue;
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if (_ucMute == 1) /* 静音 */
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{
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usRegValue = wm8978_ReadReg(52); /* Left Mixer Control */
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usRegValue |= (1u << 6);
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wm8978_WriteReg(52, usRegValue);
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usRegValue = wm8978_ReadReg(53); /* Left Mixer Control */
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usRegValue |= (1u << 6);
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wm8978_WriteReg(53, usRegValue);
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usRegValue = wm8978_ReadReg(54); /* Right Mixer Control */
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usRegValue |= (1u << 6);
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wm8978_WriteReg(54, usRegValue);
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usRegValue = wm8978_ReadReg(55); /* Right Mixer Control */
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usRegValue |= (1u << 6);
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wm8978_WriteReg(55, usRegValue);
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}
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else /* 取消静音 */
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{
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usRegValue = wm8978_ReadReg(52);
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usRegValue &= ~(1u << 6);
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wm8978_WriteReg(52, usRegValue);
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usRegValue = wm8978_ReadReg(53); /* Left Mixer Control */
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usRegValue &= ~(1u << 6);
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wm8978_WriteReg(53, usRegValue);
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usRegValue = wm8978_ReadReg(54);
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usRegValue &= ~(1u << 6);
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wm8978_WriteReg(54, usRegValue);
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usRegValue = wm8978_ReadReg(55); /* Left Mixer Control */
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usRegValue &= ~(1u << 6);
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wm8978_WriteReg(55, usRegValue);
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}
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}
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/**
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* @brief 设置增益
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* @param _ucGain ：增益值, 0-63
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* @retval 无
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*/
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void wm8978_SetMicGain(uint8_t _ucGain)
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{
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if (_ucGain > GAIN_MAX)
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{
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_ucGain = GAIN_MAX;
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}
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/* PGA 音量控制 R45， R46 WM8978(V4.5_2011).pdf 25页
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Bit8 INPPGAUPDATE
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Bit7 INPPGAZCL 过零再更改
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Bit6 INPPGAMUTEL PGA静音
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Bit5:0 增益值，010000是0dB
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*/
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wm8978_WriteReg(45, _ucGain);
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wm8978_WriteReg(46, _ucGain | (1 << 8));
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}
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/**
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* @brief 设置Line输入通道的增益
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* @param _ucGain ：音量值, 0-7. 7最大，0最小。 可衰减可放大。
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* @retval 无
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*/
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void wm8978_SetLineGain(uint8_t _ucGain)
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{
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uint16_t usRegValue;
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if (_ucGain > 7)
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{
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_ucGain = 7;
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}
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/*
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Mic 输入信道的增益由 PGABOOSTL 和 PGABOOSTR 控制
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Aux 输入信道的输入增益由 AUXL2BOOSTVO[2:0] 和 AUXR2BOOSTVO[2:0] 控制
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Line 输入信道的增益由 LIP2BOOSTVOL[2:0] 和 RIP2BOOSTVOL[2:0] 控制
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*/
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/* WM8978(V4.5_2011).pdf 29页，R47（左声道），R48（右声道）, MIC 增益控制寄存器
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R47 (R48定义与此相同)
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B8 PGABOOSTL = 1, 0表示MIC信号直通无增益，1表示MIC信号+20dB增益（通过自举电路）
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B7 = 0， 保留
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B6:4 L2_2BOOSTVOL = x， 0表示禁止，1-7表示增益-12dB ~ +6dB （可以衰减也可以放大）
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B3 = 0， 保留
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B2:0` AUXL2BOOSTVOL = x，0表示禁止，1-7表示增益-12dB ~ +6dB （可以衰减也可以放大）
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*/
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usRegValue = wm8978_ReadReg(47);
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usRegValue &= 0x8F;/* 将Bit6:4清0 1000 1111*/
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usRegValue |= (_ucGain << 4);
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wm8978_WriteReg(47, usRegValue); /* 写左声道输入增益控制寄存器 */
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usRegValue = wm8978_ReadReg(48);
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usRegValue &= 0x8F;/* 将Bit6:4清0 1000 1111*/
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usRegValue |= (_ucGain << 4);
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wm8978_WriteReg(48, usRegValue); /* 写右声道输入增益控制寄存器 */
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}
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/**
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* @brief 关闭wm8978，进入低功耗模式
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* @param 无
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* @retval 无
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*/
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void wm8978_PowerDown(void)
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{
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wm8978_Reset(); /* 硬件复位WM8978所有寄存器到缺省状态 */
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}
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/**
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* @brief 配置WM8978的音频接口(I2S)
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* @param _usStandard : 接口标准，I2S_Standard_Phillips, I2S_Standard_MSB 或 I2S_Standard_LSB
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* @param _ucWordLen : 字长，16、24、32 （丢弃不常用的20bit格式）
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* @retval 无
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*/
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void wm8978_CfgAudioIF(uint16_t _usStandard, uint8_t _ucWordLen)
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{
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uint16_t usReg;
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/* WM8978(V4.5_2011).pdf 73页，寄存器列表 */
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/* REG R4, 音频接口控制寄存器
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B8 BCP = X, BCLK极性，0表示正常，1表示反相
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B7 LRCP = x, LRC时钟极性，0表示正常，1表示反相
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B6:5 WL = x， 字长，00=16bit，01=20bit，10=24bit，11=32bit （右对齐模式只能操作在最大24bit)
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B4:3 FMT = x，音频数据格式，00=右对齐，01=左对齐，10=I2S格式，11=PCM
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B2 DACLRSWAP = x, 控制DAC数据出现在LRC时钟的左边还是右边
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B1 ADCLRSWAP = x，控制ADC数据出现在LRC时钟的左边还是右边
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B0 MONO = 0，0表示立体声，1表示单声道，仅左声道有效
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*/
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usReg = 0;
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if (_usStandard == SAI_I2S_STANDARD) /* I2S飞利浦标准 */
|
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{
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||
usReg |= (2 << 3);
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||
}
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else if (_usStandard == SAI_I2S_MSBJUSTIFIED) /* MSB对齐标准(左对齐) */
|
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{
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usReg |= (1 << 3);
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}
|
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else if (_usStandard == SAI_I2S_LSBJUSTIFIED) /* LSB对齐标准(右对齐) */
|
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{
|
||
usReg |= (0 << 3);
|
||
}
|
||
else /* PCM标准(16位通道帧上带长或短帧同步或者16位数据帧扩展为32位通道帧) */
|
||
{
|
||
usReg |= (3 << 3);;
|
||
}
|
||
|
||
if (_ucWordLen == 24)
|
||
{
|
||
usReg |= (2 << 5);
|
||
}
|
||
else if (_ucWordLen == 32)
|
||
{
|
||
usReg |= (3 << 5);
|
||
}
|
||
else
|
||
{
|
||
usReg |= (0 << 5); /* 16bit */
|
||
}
|
||
wm8978_WriteReg(4, usReg);
|
||
|
||
/*
|
||
R6，时钟产生控制寄存器
|
||
MS = 0, WM8978被动时钟，由MCU提供MCLK时钟
|
||
*/
|
||
wm8978_WriteReg(6, 0x000);
|
||
}
|
||
|
||
|
||
/**
|
||
* @brief 配置wm8978音频通道
|
||
* @param _InPath : 音频输入通道配置
|
||
* @param _OutPath : 音频输出通道配置
|
||
* @retval 无
|
||
*/
|
||
void wm8978_CfgAudioPath(uint16_t _InPath, uint16_t _OutPath)
|
||
{
|
||
uint16_t usReg;
|
||
|
||
/* 查看WM8978数据手册的 REGISTER MAP 章节， 第89页 */
|
||
|
||
if ((_InPath == IN_PATH_OFF) && (_OutPath == OUT_PATH_OFF))
|
||
{
|
||
wm8978_PowerDown();
|
||
return;
|
||
}
|
||
|
||
/* --------------------------- 第1步：根据输入通道参数配置寄存器 -----------------------*/
|
||
/*
|
||
R1 寄存器 Power manage 1
|
||
Bit8 BUFDCOPEN, Output stage 1.5xAVDD/2 driver enable
|
||
Bit7 OUT4MIXEN, OUT4 mixer enable
|
||
Bit6 OUT3MIXEN, OUT3 mixer enable
|
||
Bit5 PLLEN .不用
|
||
Bit4 MICBEN ,Microphone Bias Enable (MIC偏置电路使能)
|
||
Bit3 BIASEN ,Analogue amplifier bias control 必须设置为1模拟放大器才工作
|
||
Bit2 BUFIOEN , Unused input/output tie off buffer enable
|
||
Bit1:0 VMIDSEL, 必须设置为非00值模拟放大器才工作
|
||
*/
|
||
usReg = (1 << 3) | (3 << 0);
|
||
if (_OutPath & OUT3_4_ON) /* OUT3和OUT4使能输出到GSM模块 */
|
||
{
|
||
usReg |= ((1 << 7) | (1 << 6));
|
||
}
|
||
if ((_InPath & MIC_LEFT_ON) || (_InPath & MIC_RIGHT_ON))
|
||
{
|
||
usReg |= (1 << 4);
|
||
}
|
||
wm8978_WriteReg(1, usReg); /* 写寄存器 */
|
||
|
||
/*
|
||
R2 寄存器 Power manage 2
|
||
Bit8 ROUT1EN, ROUT1 output enable 耳机右声道输出使能
|
||
Bit7 LOUT1EN, LOUT1 output enable 耳机左声道输出使能
|
||
Bit6 SLEEP, 0 = Normal device operation 1 = Residual current reduced in device standby mode
|
||
Bit5 BOOSTENR, Right channel Input BOOST enable 输入通道自举电路使能. 用到PGA放大功能时必须使能
|
||
Bit4 BOOSTENL, Left channel Input BOOST enable
|
||
Bit3 INPGAENR, Right channel input PGA enable 右声道输入PGA使能
|
||
Bit2 INPGAENL, Left channel input PGA enable
|
||
Bit1 ADCENR, Enable ADC right channel
|
||
Bit0 ADCENL, Enable ADC left channel
|
||
*/
|
||
usReg = 0;
|
||
if (_OutPath & EAR_LEFT_ON)
|
||
{
|
||
usReg |= (1 << 7);
|
||
}
|
||
if (_OutPath & EAR_RIGHT_ON)
|
||
{
|
||
usReg |= (1 << 8);
|
||
}
|
||
if (_InPath & MIC_LEFT_ON)
|
||
{
|
||
usReg |= ((1 << 4) | (1 << 2));
|
||
}
|
||
if (_InPath & MIC_RIGHT_ON)
|
||
{
|
||
usReg |= ((1 << 5) | (1 << 3));
|
||
}
|
||
if (_InPath & LINE_ON)
|
||
{
|
||
usReg |= ((1 << 4) | (1 << 5));
|
||
}
|
||
if (_InPath & MIC_RIGHT_ON)
|
||
{
|
||
usReg |= ((1 << 5) | (1 << 3));
|
||
}
|
||
if (_InPath & ADC_ON)
|
||
{
|
||
usReg |= ((1 << 1) | (1 << 0));
|
||
}
|
||
wm8978_WriteReg(2, usReg); /* 写寄存器 */
|
||
|
||
/*
|
||
R3 寄存器 Power manage 3
|
||
Bit8 OUT4EN, OUT4 enable
|
||
Bit7 OUT3EN, OUT3 enable
|
||
Bit6 LOUT2EN, LOUT2 output enable
|
||
Bit5 ROUT2EN, ROUT2 output enable
|
||
Bit4 0,
|
||
Bit3 RMIXEN, Right mixer enable
|
||
Bit2 LMIXEN, Left mixer enable
|
||
Bit1 DACENR, Right channel DAC enable
|
||
Bit0 DACENL, Left channel DAC enable
|
||
*/
|
||
usReg = 0;
|
||
if (_OutPath & OUT3_4_ON)
|
||
{
|
||
usReg |= ((1 << 8) | (1 << 7));
|
||
}
|
||
if (_OutPath & SPK_ON)
|
||
{
|
||
usReg |= ((1 << 6) | (1 << 5));
|
||
}
|
||
if (_OutPath != OUT_PATH_OFF)
|
||
{
|
||
usReg |= ((1 << 3) | (1 << 2));
|
||
}
|
||
if (_InPath & DAC_ON)
|
||
{
|
||
usReg |= ((1 << 1) | (1 << 0));
|
||
}
|
||
wm8978_WriteReg(3, usReg); /* 写寄存器 */
|
||
|
||
/*
|
||
R44 寄存器 Input ctrl
|
||
|
||
Bit8 MBVSEL, Microphone Bias Voltage Control 0 = 0.9 * AVDD 1 = 0.6 * AVDD
|
||
Bit7 0
|
||
Bit6 R2_2INPPGA, Connect R2 pin to right channel input PGA positive terminal
|
||
Bit5 RIN2INPPGA, Connect RIN pin to right channel input PGA negative terminal
|
||
Bit4 RIP2INPPGA, Connect RIP pin to right channel input PGA amplifier positive terminal
|
||
Bit3 0
|
||
Bit2 L2_2INPPGA, Connect L2 pin to left channel input PGA positive terminal
|
||
Bit1 LIN2INPPGA, Connect LIN pin to left channel input PGA negative terminal
|
||
Bit0 LIP2INPPGA, Connect LIP pin to left channel input PGA amplifier positive terminal
|
||
*/
|
||
usReg = 0 << 8;
|
||
if (_InPath & LINE_ON)
|
||
{
|
||
usReg |= ((1 << 6) | (1 << 2));
|
||
}
|
||
if (_InPath & MIC_RIGHT_ON)
|
||
{
|
||
usReg |= ((1 << 5) | (1 << 4));
|
||
}
|
||
if (_InPath & MIC_LEFT_ON)
|
||
{
|
||
usReg |= ((1 << 1) | (1 << 0));
|
||
}
|
||
wm8978_WriteReg(44, usReg); /* 写寄存器 */
|
||
|
||
|
||
/*
|
||
R14 寄存器 ADC Control
|
||
设置高通滤波器（可选的） WM8978(V4.5_2011).pdf 31 32页,
|
||
Bit8 HPFEN, High Pass Filter Enable高通滤波器使能，0表示禁止，1表示使能
|
||
BIt7 HPFAPP, Select audio mode or application mode 选择音频模式或应用模式，0表示音频模式，
|
||
Bit6:4 HPFCUT，Application mode cut-off frequency 000-111选择应用模式的截止频率
|
||
Bit3 ADCOSR, ADC oversample rate select: 0=64x (lower power) 1=128x (best performance)
|
||
Bit2 0
|
||
Bit1 ADC right channel polarity adjust: 0=normal 1=inverted
|
||
Bit0 ADC left channel polarity adjust: 0=normal 1=inverted
|
||
*/
|
||
if (_InPath & ADC_ON)
|
||
{
|
||
usReg = (1 << 3) | (0 << 8) | (4 << 0); /* 禁止ADC高通滤波器, 设置截至频率 */
|
||
}
|
||
else
|
||
{
|
||
usReg = 0;
|
||
}
|
||
wm8978_WriteReg(14, usReg); /* 写寄存器 */
|
||
|
||
/* 设置陷波滤波器（notch filter），主要用于抑制话筒声波正反馈，避免啸叫. 暂时关闭
|
||
R27，R28，R29，R30 用于控制限波滤波器，WM8978(V4.5_2011).pdf 33页
|
||
R7的 Bit7 NFEN = 0 表示禁止，1表示使能
|
||
*/
|
||
if (_InPath & ADC_ON)
|
||
{
|
||
usReg = (0 << 7);
|
||
wm8978_WriteReg(27, usReg); /* 写寄存器 */
|
||
usReg = 0;
|
||
wm8978_WriteReg(28, usReg); /* 写寄存器,填0，因为已经禁止，所以也可不做 */
|
||
wm8978_WriteReg(29, usReg); /* 写寄存器,填0，因为已经禁止，所以也可不做 */
|
||
wm8978_WriteReg(30, usReg); /* 写寄存器,填0，因为已经禁止，所以也可不做 */
|
||
}
|
||
|
||
/* 自动增益控制 ALC, R32 - 34 WM8978(V4.5_2011).pdf 36页 */
|
||
{
|
||
usReg = 0; /* 禁止自动增益控制 */
|
||
wm8978_WriteReg(32, usReg);
|
||
wm8978_WriteReg(33, usReg);
|
||
wm8978_WriteReg(34, usReg);
|
||
}
|
||
|
||
/* R35 ALC Noise Gate Control
|
||
Bit3 NGATEN, Noise gate function enable
|
||
Bit2:0 Noise gate threshold:
|
||
*/
|
||
usReg = (3 << 1) | (7 << 0); /* 禁止自动增益控制 */
|
||
wm8978_WriteReg(35, usReg);
|
||
|
||
/*
|
||
Mic 输入信道的增益由 PGABOOSTL 和 PGABOOSTR 控制
|
||
Aux 输入信道的输入增益由 AUXL2BOOSTVO[2:0] 和 AUXR2BOOSTVO[2:0] 控制
|
||
Line 输入信道的增益由 LIP2BOOSTVOL[2:0] 和 RIP2BOOSTVOL[2:0] 控制
|
||
*/
|
||
/* WM8978(V4.5_2011).pdf 29页，R47（左声道），R48（右声道）, MIC 增益控制寄存器
|
||
R47 (R48定义与此相同)
|
||
B8 PGABOOSTL = 1, 0表示MIC信号直通无增益，1表示MIC信号+20dB增益（通过自举电路）
|
||
B7 = 0， 保留
|
||
B6:4 L2_2BOOSTVOL = x， 0表示禁止，1-7表示增益-12dB ~ +6dB （可以衰减也可以放大）
|
||
B3 = 0， 保留
|
||
B2:0` AUXL2BOOSTVOL = x，0表示禁止，1-7表示增益-12dB ~ +6dB （可以衰减也可以放大）
|
||
*/
|
||
usReg = 0;
|
||
if ((_InPath & MIC_LEFT_ON) || (_InPath & MIC_RIGHT_ON))
|
||
{
|
||
usReg |= (1 << 8); /* MIC增益取+20dB */
|
||
}
|
||
if (_InPath & AUX_ON)
|
||
{
|
||
usReg |= (3 << 0); /* Aux增益固定取3，用户可以自行调整 */
|
||
}
|
||
if (_InPath & LINE_ON)
|
||
{
|
||
usReg |= (3 << 4); /* Line增益固定取3，用户可以自行调整 */
|
||
}
|
||
wm8978_WriteReg(47, usReg); /* 写左声道输入增益控制寄存器 */
|
||
wm8978_WriteReg(48, usReg); /* 写右声道输入增益控制寄存器 */
|
||
|
||
/* 数字ADC音量控制，pdf 35页
|
||
R15 控制左声道ADC音量，R16控制右声道ADC音量
|
||
Bit8 ADCVU = 1 时才更新，用于同步更新左右声道的ADC音量
|
||
Bit7:0 增益选择； 0000 0000 = 静音
|
||
0000 0001 = -127dB
|
||
0000 0010 = -12.5dB （0.5dB 步长）
|
||
1111 1111 = 0dB （不衰减）
|
||
*/
|
||
usReg = 0xFF;
|
||
wm8978_WriteReg(15, usReg); /* 选择0dB，先缓存左声道 */
|
||
usReg = 0x1FF;
|
||
wm8978_WriteReg(16, usReg); /* 同步更新左右声道 */
|
||
|
||
/* 通过 wm8978_SetMicGain 函数设置mic PGA增益 */
|
||
|
||
/* R43 寄存器 AUXR – ROUT2 BEEP Mixer Function
|
||
B8:6 = 0
|
||
|
||
B5 MUTERPGA2INV, Mute input to INVROUT2 mixer
|
||
B4 INVROUT2, Invert ROUT2 output 用于扬声器推挽输出
|
||
B3:1 BEEPVOL = 7; AUXR input to ROUT2 inverter gain
|
||
B0 BEEPEN = 1; Enable AUXR beep input
|
||
|
||
*/
|
||
usReg = 0;
|
||
if (_OutPath & SPK_ON)
|
||
{
|
||
usReg |= (1 << 4); /* ROUT2 反相, 用于驱动扬声器 */
|
||
}
|
||
if (_InPath & AUX_ON)
|
||
{
|
||
usReg |= ((7 << 1) | (1 << 0));
|
||
}
|
||
wm8978_WriteReg(43, usReg);
|
||
|
||
/* R49 Output ctrl
|
||
B8:7 0
|
||
B6 DACL2RMIX, Left DAC output to right output mixer
|
||
B5 DACR2LMIX, Right DAC output to left output
|
||
B4 OUT4BOOST, 0 = OUT4 output gain = -1; DC = AVDD / 2；1 = OUT4 output gain = +1.5；DC = 1.5 x AVDD / 2
|
||
B3 OUT3BOOST, 0 = OUT3 output gain = -1; DC = AVDD / 2；1 = OUT3 output gain = +1.5；DC = 1.5 x AVDD / 2
|
||
B2 SPKBOOST, 0 = Speaker gain = -1; DC = AVDD / 2 ; 1 = Speaker gain = +1.5; DC = 1.5 x AVDD / 2
|
||
B1 TSDEN, Thermal Shutdown Enable 扬声器热保护使能（缺省1）
|
||
B0 VROI, Disabled Outputs to VREF Resistance
|
||
*/
|
||
usReg = 0;
|
||
if (_InPath & DAC_ON)
|
||
{
|
||
usReg |= ((1 << 6) | (1 << 5));
|
||
}
|
||
if (_OutPath & SPK_ON)
|
||
{
|
||
usReg |= ((1 << 2) | (1 << 1)); /* SPK 1.5x增益, 热保护使能 */
|
||
}
|
||
if (_OutPath & OUT3_4_ON)
|
||
{
|
||
usReg |= ((1 << 4) | (1 << 3)); /* BOOT3 BOOT4 1.5x增益 */
|
||
}
|
||
wm8978_WriteReg(49, usReg);
|
||
|
||
/* REG 50 (50是左声道，51是右声道，配置寄存器功能一致) WM8978(V4.5_2011).pdf 56页
|
||
B8:6 AUXLMIXVOL = 111 AUX用于FM收音机信号输入
|
||
B5 AUXL2LMIX = 1 Left Auxilliary input to left channel
|
||
B4:2 BYPLMIXVOL 音量
|
||
B1 BYPL2LMIX = 0; Left bypass path (from the left channel input boost output) to left output mixer
|
||
B0 DACL2LMIX = 1; Left DAC output to left output mixer
|
||
*/
|
||
usReg = 0;
|
||
if (_InPath & AUX_ON)
|
||
{
|
||
usReg |= ((7 << 6) | (1 << 5));
|
||
}
|
||
if ((_InPath & LINE_ON) || (_InPath & MIC_LEFT_ON) || (_InPath & MIC_RIGHT_ON))
|
||
{
|
||
usReg |= ((7 << 2) | (1 << 1));
|
||
}
|
||
if (_InPath & DAC_ON)
|
||
{
|
||
usReg |= (1 << 0);
|
||
}
|
||
wm8978_WriteReg(50, usReg);
|
||
wm8978_WriteReg(51, usReg);
|
||
|
||
/* R56 寄存器 OUT3 mixer ctrl
|
||
B8:7 0
|
||
B6 OUT3MUTE, 0 = Output stage outputs OUT3 mixer; 1 = Output stage muted – drives out VMID.
|
||
B5:4 0
|
||
B3 BYPL2OUT3, OUT4 mixer output to OUT3 (反相)
|
||
B4 0
|
||
B2 LMIX2OUT3, Left ADC input to OUT3
|
||
B1 LDAC2OUT3, Left DAC mixer to OUT3
|
||
B0 LDAC2OUT3, Left DAC output to OUT3
|
||
*/
|
||
usReg = 0;
|
||
if (_OutPath & OUT3_4_ON)
|
||
{
|
||
usReg |= (1 << 3);
|
||
}
|
||
wm8978_WriteReg(56, usReg);
|
||
|
||
/* R57 寄存器 OUT4 (MONO) mixer ctrl
|
||
B8:7 0
|
||
B6 OUT4MUTE, 0 = Output stage outputs OUT4 mixer 1 = Output stage muted – drives outVMID.
|
||
B5 HALFSIG, 0 = OUT4 normal output 1 = OUT4 attenuated by 6dB
|
||
B4 LMIX2OUT4, Left DAC mixer to OUT4
|
||
B3 LDAC2UT4, Left DAC to OUT4
|
||
B2 BYPR2OUT4, Right ADC input to OUT4
|
||
B1 RMIX2OUT4, Right DAC mixer to OUT4
|
||
B0 RDAC2OUT4, Right DAC output to OUT4
|
||
*/
|
||
usReg = 0;
|
||
if (_OutPath & OUT3_4_ON)
|
||
{
|
||
usReg |= ((1 << 4) | (1 << 1));
|
||
}
|
||
wm8978_WriteReg(57, usReg);
|
||
|
||
|
||
/* R11, 12 寄存器 DAC数字音量
|
||
R11 Left DAC Digital Volume
|
||
R12 Right DAC Digital Volume
|
||
*/
|
||
if (_InPath & DAC_ON)
|
||
{
|
||
wm8978_WriteReg(11, 255);
|
||
wm8978_WriteReg(12, 255 | 0x100);
|
||
}
|
||
else
|
||
{
|
||
wm8978_WriteReg(11, 0);
|
||
wm8978_WriteReg(12, 0 | 0x100);
|
||
}
|
||
|
||
/* R10 寄存器 DAC Control
|
||
B8 0
|
||
B7 0
|
||
B6 SOFTMUTE, Softmute enable:
|
||
B5 0
|
||
B4 0
|
||
B3 DACOSR128, DAC oversampling rate: 0=64x (lowest power) 1=128x (best performance)
|
||
B2 AMUTE, Automute enable
|
||
B1 DACPOLR, Right DAC output polarity
|
||
B0 DACPOLL, Left DAC output polarity:
|
||
*/
|
||
if (_InPath & DAC_ON)
|
||
{
|
||
wm8978_WriteReg(10, 0);
|
||
}
|
||
;
|
||
}
|
||
|
||
/**
|
||
* @brief 设置陷波滤波器（notch filter），主要用于抑制话筒声波正反馈，避免啸叫
|
||
* @param NFA0[13:0] and NFA1[13:0]
|
||
* @retval 无
|
||
*/
|
||
void wm8978_NotchFilter(uint16_t _NFA0, uint16_t _NFA1)
|
||
{
|
||
uint16_t usReg;
|
||
|
||
/* page 26
|
||
A programmable notch filter is provided. This filter has a variable centre frequency and bandwidth,
|
||
programmable via two coefficients, a0 and a1. a0 and a1 are represented by the register bits
|
||
NFA0[13:0] and NFA1[13:0]. Because these coefficient values require four register writes to setup
|
||
there is an NFU (Notch Filter Update) flag which should be set only when all four registers are setup.
|
||
*/
|
||
usReg = (1 << 7) | (_NFA0 & 0x3F);
|
||
wm8978_WriteReg(27, usReg); /* 写寄存器 */
|
||
|
||
usReg = ((_NFA0 >> 7) & 0x3F);
|
||
wm8978_WriteReg(28, usReg); /* 写寄存器 */
|
||
|
||
usReg = (_NFA1 & 0x3F);
|
||
wm8978_WriteReg(29, usReg); /* 写寄存器 */
|
||
|
||
usReg = (1 << 8) | ((_NFA1 >> 7) & 0x3F);
|
||
wm8978_WriteReg(30, usReg); /* 写寄存器 */
|
||
}
|
||
|
||
|
||
/**
|
||
* @brief 控制WM8978的GPIO1引脚输出0或1，
|
||
* 控制模拟开关来切换录音放音
|
||
* 1：放音
|
||
* 0：录音
|
||
* @param _ucValue ：GPIO1输出值，0或1
|
||
* @retval 无
|
||
*/
|
||
void wm8978_CtrlGPIO1(uint8_t _ucValue)
|
||
{
|
||
uint16_t usRegValue;
|
||
|
||
/* R8， pdf 62页 */
|
||
if (_ucValue == 0) /* 输出0 */
|
||
{
|
||
usRegValue = 6; /* B2:0 = 110 */
|
||
}
|
||
else
|
||
{
|
||
usRegValue = 7; /* B2:0 = 111 */
|
||
}
|
||
wm8978_WriteReg(8, usRegValue);
|
||
}
|
||
|
||
/**
|
||
* @brief 复位wm8978，所有的寄存器值恢复到缺省值
|
||
* @param 无
|
||
* @retval 1: 复位成功
|
||
* 0：复位失败
|
||
*/
|
||
uint8_t wm8978_Reset(void)
|
||
{
|
||
/* wm8978寄存器缺省值 */
|
||
const uint16_t reg_default[] = {
|
||
0x000, 0x000, 0x000, 0x000, 0x050, 0x000, 0x140, 0x000,
|
||
0x000, 0x000, 0x000, 0x0FF, 0x0FF, 0x000, 0x100, 0x0FF,
|
||
0x0FF, 0x000, 0x12C, 0x02C, 0x02C, 0x02C, 0x02C, 0x000,
|
||
0x032, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
|
||
0x038, 0x00B, 0x032, 0x000, 0x008, 0x00C, 0x093, 0x0E9,
|
||
0x000, 0x000, 0x000, 0x000, 0x003, 0x010, 0x010, 0x100,
|
||
0x100, 0x002, 0x001, 0x001, 0x039, 0x039, 0x039, 0x039,
|
||
0x001, 0x001
|
||
};
|
||
uint8_t res;
|
||
uint8_t i;
|
||
|
||
res=wm8978_WriteReg(0x00, 0);
|
||
|
||
for (i = 0; i < sizeof(reg_default) / 2; i++)
|
||
{
|
||
wm8978_RegCash[i] = reg_default[i];
|
||
}
|
||
return res;
|
||
}
|
||
|
||
|
||
/***************************** (END OF FILE) *********************************/
|