语音智能小车:语音识别模块LD3320+STMF103
2024-05-30 18:49:44
使用LD3320模块,实现用户说一句话,比如说一句"小车左转",小车就会进行左转,到后面会加SD卡模块,实现语音交互等功能.
LD3320是非特定人（不用针对指定人）语音识别芯片，即语音声控芯片。最多可以识别50条预先内置的指令。
工作模式：
LD3320（LDV7）语音模块可以工作在以下三种模式：
普通模式：直接说话，模块直接识别；
按键模式：按键触发开始ASR进程；
口令模式：需要一级唤醒词（口令）；
推荐使用口令模式，这样避免嘈杂环境下误动作。
小车与STMF103接线图:
A轮 \\ ------ // B轮 TIM2
\\ ------ //
------
// ------ \\
D轮 // ------ \\ C轮 TIM3
控制ABCD四个轮子的PWM
PC6--A轮 //左前 ---- 电机驱动1-ENA
PC7--B轮 //右前 ---- 电机驱动1-ENB
PC8--C轮 //右后 ---- 电机驱动2-ENA
PC9--D轮 //左后 ---- 电机驱动2-ENB
A轮：PC1 PC0 控制前后运动 PC1----IN2，PC0----IN1
B轮：PC3 PC2 控制前后运动 PC3----IN4，PC2----IN3
C轮：PC10，PC11控制前后运动 PC10 --- IN1，PC11---IN2
D轮：PC12，PD2控制前后运动 PC12 --- IN3，PD2 ---IN4
LD332模块与单片机接线图:
LD3320 5v-----单片机的电源5v,GND----GND;
LD3320 RST----PB15
LD3320 CS---PB13
LD3320 IRQ---PB12
LD3320 CS---PA4
LD3320 SCK---PA5
LD3320 MISO----PA6
LD3320 MOSI---PA7
主要代码如下:
测试的时候可以串口助手进行调试.
LD3320_config.h
#ifndef _LD3320_CONFIG_H__
#define _LD3320_CONFIG_H__///识别码
#define CODE_XCQJ 1 //小车前进
#define CODE_XCHT 2 //小车后退
#define CODE_XCYZ 3 //小车右转
#define CODE_XCZZ 4 //小车左转
#define CODE_XCTZ 5 //小车停止///小车引脚相关定义
#define M1_PIN GPIO_Pin_0
#define M1_GPIO_PORT GPIOC
#define M1_GPIO_CLK RCC_APB2Periph_GPIOC#define M2_PIN GPIO_Pin_1
#define M2_GPIO_PORT GPIOC
#define M2_GPIO_CLK RCC_APB2Periph_GPIOC#define M3_PIN GPIO_Pin_2
#define M3_GPIO_PORT GPIOC
#define M3_GPIO_CLK RCC_APB2Periph_GPIOC#define M4_PIN GPIO_Pin_2
#define M4_GPIO_PORT GPIOC
#define M4_GPIO_CLK RCC_APB2Periph_GPIOC#define M5_PIN GPIO_Pin_10
#define M5_GPIO_PORT GPIOC
#define M5_GPIO_CLK RCC_APB2Periph_GPIOC#define M6_PIN GPIO_Pin_11
#define M6_GPIO_PORT GPIOC
#define M6_GPIO_CLK RCC_APB2Periph_GPIOC#define M7_PIN GPIO_Pin_12
#define M7_GPIO_PORT GPIOC
#define M7_GPIO_CLK RCC_APB2Periph_GPIOC#define M8_PIN GPIO_Pin_2
#define M8_GPIO_PORT GPIOD
#define M8_GPIO_CLK RCC_APB2Periph_GPIOD#define E1_PIN GPIO_Pin_6
#define E1_GPIO_PORT GPIOC
#define E1_GPIO_CLK RCC_APB2Periph_GPIOC#define E2_PIN GPIO_Pin_7
#define E2_GPIO_PORT GPIOC
#define E2_GPIO_CLK RCC_APB2Periph_GPIOC#define E3_PIN GPIO_Pin_8
#define E3_GPIO_PORT GPIOC
#define E3_GPIO_CLK RCC_APB2Periph_GPIOC#define E4_PIN GPIO_Pin_9
#define E4_GPIO_PORT GPIOC
#define E4_GPIO_CLK RCC_APB2Periph_GPIOC#define M1_ON() GPIO_SetBits(GPIOC,GPIO_Pin_0)
#define M2_ON() GPIO_SetBits(GPIOC,GPIO_Pin_1)
#define M3_ON() GPIO_SetBits(GPIOC,GPIO_Pin_2)
#define M4_ON() GPIO_SetBits(GPIOC,GPIO_Pin_2)
#define M5_ON() GPIO_SetBits(GPIOC,GPIO_Pin_10)
#define M6_ON() GPIO_SetBits(GPIOC,GPIO_Pin_11)
#define M7_ON() GPIO_SetBits(GPIOC,GPIO_Pin_12)
#define M8_ON() GPIO_SetBits(GPIOD,GPIO_Pin_2)#define M1_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_0)
#define M2_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_1)
#define M3_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_2)
#define M4_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_3)
#define M5_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_10)
#define M6_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_11)
#define M7_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_12)
#define M8_OFF() GPIO_ResetBits(GPIOD,GPIO_Pin_2)#define E1_ON() GPIO_SetBits(GPIOC,GPIO_Pin_6)
#define E2_ON() GPIO_SetBits(GPIOC,GPIO_Pin_7)
#define E3_ON() GPIO_SetBits(GPIOC,GPIO_Pin_8)
#define E4_ON() GPIO_SetBits(GPIOC,GPIO_Pin_9)#define E1_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_6)
#define E2_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_7)
#define E3_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_8)
#define E4_OFF() GPIO_ResetBits(GPIOC,GPIO_Pin_9)
///LD3320引脚相关定义
#define LD3320RST_PIN GPIO_Pin_15
#define LD3320RST_GPIO_PORT GPIOB
#define LD3320RST_GPIO_CLK RCC_APB2Periph_GPIOB
#define LD_RST_H() GPIO_SetBits(GPIOB, GPIO_Pin_15)
#define LD_RST_L() GPIO_ResetBits(GPIOB, GPIO_Pin_15)#define LD3320CS_PIN GPIO_Pin_4
#define LD3320CS_GPIO_PORT GPIOA
#define LD3320CS_GPIO_CLK RCC_APB2Periph_GPIOA
#define LD_CS_H() GPIO_SetBits(GPIOA, GPIO_Pin_4)
#define LD_CS_L() GPIO_ResetBits(GPIOA, GPIO_Pin_4)#define LD3320IRQ_GPIO_CLK RCC_APB2Periph_GPIOB
#define LD3320IRQ_PIN GPIO_Pin_12
#define LD3320IRQ_GPIO_PORT GPIOB
#define LD3320IRQEXIT_PORTSOURCE GPIO_PortSourceGPIOB
#define LD3320IRQPINSOURCE GPIO_PinSource12
#define LD3320IRQEXITLINE EXTI_Line12
#define LD3320IRQN EXTI15_10_IRQn#define LD3320WR_PIN GPIO_Pin_13
#define LD3320WR_GPIO_PORT GPIOB
#define LD3320WR_GPIO_CLK RCC_APB2Periph_GPIOB
#define LD_SPIS_H() GPIO_SetBits(GPIOB, GPIO_Pin_13)
#define LD_SPIS_L() GPIO_ResetBits(GPIOB, GPIO_Pin_13)#define LD3320SPI SPI1
#define LD3320SPI_CLK RCC_APB2Periph_SPI1 #define LD3320SPIMISO_PIN GPIO_Pin_6
#define LD3320SPIMISO_GPIO_PORT GPIOA
#define LD3320SPIMISO_GPIO_CLK RCC_APB2Periph_GPIOA#define LD3320SPIMOSI_PIN GPIO_Pin_7
#define LD3320SPIMOSI_GPIO_PORT GPIOA
#define LD3320SPIMOSI_GPIO_CLK RCC_APB2Periph_GPIOA#define LD3320SPISCK_PIN GPIO_Pin_5
#define LD3320SPISCK_GPIO_PORT GPIOA
#define LD3320SPISCK_GPIO_CLK RCC_APB2Periph_GPIOA#endif
LD3320.h
#ifndef __LD3320_H
#define __LD3320_H#include "stm32f10x.h"
#include <stdio.h>
#include "usart_config.h"
#include "LD3320_config.h"#define uint8 unsigned char
#define uint16 unsigned int
#define uint32 unsigned long///以下三个状态定义用来记录程序是在运行ASR识别还是在运行MP3播放
#define LD_MODE_IDLE 0x00
#define LD_MODE_ASR_RUN 0x08
#define LD_MODE_MP3 0x40///以下五个状态定义用来记录程序是在运行ASR识别过程中的哪个状态
#define LD_ASR_NONE 0x00 //表示没有在作ASR识别
#define LD_ASR_RUNING 0x01 //表示LD3320正在作ASR识别中
#define LD_ASR_FOUNDOK 0x10 //表示一次识别流程结束后，有一个识别结果
#define LD_ASR_FOUNDZERO 0x11 //表示一次识别流程结束后，没有识别结果
#define LD_ASR_ERROR 0x31 // 表示一次识别流程中LD3320芯片内部出现不正确的状态#define CLK_IN 24/* user need modify this value according to clock in */
#define LD_PLL_11 (uint8)((CLK_IN/2.0)-1)
#define LD_PLL_MP3_19 0x0f
#define LD_PLL_MP3_1B 0x18
#define LD_PLL_MP3_1D (uint8)(((90.0*((LD_PLL_11)+1))/(CLK_IN))-1)#define LD_PLL_ASR_19 (uint8)(CLK_IN*32.0/(LD_PLL_11+1) - 0.51)
#define LD_PLL_ASR_1B 0x48
#define LD_PLL_ASR_1D 0x1f#define MIC_VOL 0x43void LD3320_main(void);
static uint8 LD_AsrAddFixed(void);
static void Board_text(uint8 Code_Val);
static void Delayms(uint16 i);//小车的方向
static void car_go(void);
static void car_back(void);
static void car_right(void);
static void car_left(void);
static void car_stop(void);///相关初始化
static void LD3320_init(void);
static void LD3320_GPIO_Cfg(void);
static void LD3320_EXTI_Cfg(void);
static void LD3320_SPI_cfg(void);
static void car_Init(void);///中间层
static void LD3320_delay(unsigned long uldata);
static uint8 RunASR(void);
static void LD_reset(void);
static void LD_AsrStart(void);
static uint8 LD_Check_ASRBusyFlag_b2(void);///寄存器操作
static uint8 spi_send_byte(uint8 byte);
static void LD_WriteReg(uint8 data1,uint8 data2);
static uint8 LD_ReadReg(uint8 reg_add);
static uint8 LD_GetResult(void);
static uint8 LD_AsrRun(void);
static void ProcessInt(void);
static void LD_Init_Common(void);
static void LD_Init_ASR(void);#endif /*__LD3320_H */
LD3320.C
#include "LD3320.h"uint8 nAsrStatus = 0;
uint8 nLD_Mode = LD_MODE_IDLE;//用来记录当前是在进行ASR识别还是在播放MP3
uint8 ucRegVal;///用户修改
void LD3320_main(void)
{uint8 nAsrRes=0;LD3320_init(); printf("1、小车前进\r\n"); printf("2、小车后退\r\n"); printf("3、小车右转\r\n"); printf("4、小车左转\r\n"); printf("5、小车停止\r\n"); nAsrStatus = LD_ASR_NONE;//初始状态：没有在作ASRwhile(1){switch(nAsrStatus){case LD_ASR_RUNING:case LD_ASR_ERROR: break;case LD_ASR_NONE:nAsrStatus=LD_ASR_RUNING;if (RunASR()==0)//启动一次ASR识别流程：ASR初始化，ASR添加关键词语，启动ASR运算{ nAsrStatus = LD_ASR_ERROR;}break;case LD_ASR_FOUNDOK:nAsrRes = LD_GetResult( );//一次ASR识别流程结束，去取ASR识别结果 printf("\r\n识别码:%d", nAsrRes); switch(nAsrRes) //对结果执行相关操作,客户修改{case CODE_XCQJ: //命令“小车前进”printf(" 小车前进 指令识别成功\r\n"); break;case CODE_XCHT: //命令“小车后退”printf(" 小车后退 指令识别成功\r\n"); break;case CODE_XCYZ: //命令“小车右转”printf(" 小车右转 指令识别成功\r\n"); break;case CODE_XCZZ: //命令“小车左转”printf(" 小车左转 指令识别成功\r\n");break;case CODE_XCTZ: //命令“小车停止”printf(" 小车停止 指令识别成功\r\n");default:break;} nAsrStatus = LD_ASR_NONE;break;case LD_ASR_FOUNDZERO:default:nAsrStatus = LD_ASR_NONE;break;}//switch//开发板测试Board_text(nAsrRes );}// while
}static uint8 LD_AsrAddFixed(void)
{uint8 k, flag;uint8 nAsrAddLength;#define DATE_A 5 //数组二维数值#define DATE_B 20 //数组一维数值//添加关键词uint8 sRecog[DATE_A][DATE_B] = {"xiao che qian jian",\"xiao che hou tui",\"xiao che you zhuan",\"xiao che zuo zhuan",\"xiao che ting zhi"\}; uint8 pCode[DATE_A] = {CODE_XCQJ, \CODE_XCHT, \CODE_XCYZ,\CODE_XCZZ, \CODE_XCTZ \}; //添加识别码flag = 1;for (k=0; k<DATE_A; k++){ if(LD_Check_ASRBusyFlag_b2() == 0){flag = 0;break;}LD_WriteReg(0xc1, pCode[k] );LD_WriteReg(0xc3, 0);LD_WriteReg(0x08, 0x04);LD3320_delay(1);LD_WriteReg(0x08, 0x00);LD3320_delay(1);for (nAsrAddLength=0; nAsrAddLength<DATE_B; nAsrAddLength++){if (sRecog[k][nAsrAddLength] == 0)break;LD_WriteReg(0x5, sRecog[k][nAsrAddLength]);}LD_WriteReg(0xb9, nAsrAddLength);LD_WriteReg(0xb2, 0xff);LD_WriteReg(0x37, 0x04);} return flag;
}static void Board_text(uint8 Code_Val)
{ switch(Code_Val) //对结果执行相关操作{case CODE_XCQJ: //命令“小车前进”car_go();break;case CODE_XCHT: //命令“小车后退”car_back();break;case CODE_XCYZ: //命令“小车右转”car_right();break;case CODE_XCZZ: //命令“小车左转”car_left();break;case CODE_XCTZ: //命令“小车停止”car_stop();break;default:break;}
}static void Delayms(uint16 i)
{unsigned char a,b;for(;i>0;i--)for(b=4;b>0;b--)for(a=113;a>0;a--);
}static void car_go(void)
{M1_OFF();M3_OFF();M6_OFF();M7_OFF();M2_ON();M4_ON();M5_ON();M8_ON();E1_ON();E2_ON();E3_ON();E4_ON();
}static void car_back(void)
{M2_OFF();M4_OFF();M5_OFF();M8_OFF();M1_ON();M3_ON();M6_ON();M7_ON();E1_ON();E2_ON();E3_ON();E4_ON();
}static void car_right(void)
{
M3_OFF();M7_OFF();
M4_ON();M8_ON();
E2_ON();E4_ON();
}static void car_left(void)
{M1_OFF();M6_OFF();M2_ON();M5_ON();;E1_ON();E3_ON();
}static void car_stop(void)
{
E1_OFF();E2_OFF();E3_OFF();E4_OFF();}///相关初始化
static void LD3320_init(void)
{LD3320_GPIO_Cfg(); LD3320_EXTI_Cfg();LD3320_SPI_cfg();car_Init();LD_reset();
}static void LD3320_GPIO_Cfg(void)
{ GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(LD3320RST_GPIO_CLK | LD3320CS_GPIO_CLK,ENABLE);//LD_CS /RSETGPIO_InitStructure.GPIO_Pin =LD3320CS_PIN;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(LD3320CS_GPIO_PORT,&GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin =LD3320RST_PIN;GPIO_Init(LD3320RST_GPIO_PORT,&GPIO_InitStructure);
}static void LD3320_EXTI_Cfg(void)
{EXTI_InitTypeDef EXTI_InitStructure;NVIC_InitTypeDef NVIC_InitStructure;GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); RCC_APB2PeriphClockCmd(LD3320IRQ_GPIO_CLK, ENABLE);GPIO_InitStructure.GPIO_Pin =LD3320IRQ_PIN;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(LD3320IRQ_GPIO_PORT, &GPIO_InitStructure);//外部中断线配置GPIO_EXTILineConfig(LD3320IRQEXIT_PORTSOURCE, LD3320IRQPINSOURCE);EXTI_InitStructure.EXTI_Line = LD3320IRQEXITLINE;EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;EXTI_InitStructure.EXTI_Trigger =EXTI_Trigger_Falling;EXTI_InitStructure.EXTI_LineCmd = ENABLE;EXTI_Init(&EXTI_InitStructure);//中断嵌套配置NVIC_InitStructure.NVIC_IRQChannel = LD3320IRQN;NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure);
}static void LD3320_SPI_cfg(void)
{SPI_InitTypeDef SPI_InitStructure;GPIO_InitTypeDef GPIO_InitStructure;//spi端口配置RCC_APB2PeriphClockCmd(LD3320SPI_CLK,ENABLE); RCC_APB2PeriphClockCmd(LD3320WR_GPIO_CLK | LD3320SPIMISO_GPIO_CLK | LD3320SPIMOSI_GPIO_CLK | LD3320SPISCK_GPIO_CLK,ENABLE);GPIO_InitStructure.GPIO_Pin = LD3320SPIMISO_PIN;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_Init(LD3320SPIMISO_GPIO_PORT,&GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = LD3320SPIMOSI_PIN;GPIO_Init(LD3320SPIMOSI_GPIO_PORT,&GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = LD3320SPISCK_PIN;GPIO_Init(LD3320SPISCK_GPIO_PORT,&GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = LD3320WR_PIN; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(LD3320WR_GPIO_PORT, &GPIO_InitStructure);LD_CS_H();SPI_Cmd(LD3320SPI, DISABLE);SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //全双工SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //主模式SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //8位SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; //时钟极性 空闲状态时，SCK保持低电平SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; //时钟相位 数据采样从第一个时钟边沿开始SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //软件产生NSSSPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64; //波特率控制 SYSCLK/128SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //数据高位在前SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC多项式寄存器初始值为7SPI_Init(LD3320SPI, &SPI_InitStructure);SPI_Cmd(LD3320SPI, ENABLE);
}static void car_Init(void)
{ GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(M1_GPIO_CLK | M2_GPIO_CLK | M3_GPIO_CLK | M4_GPIO_CLK|M5_GPIO_CLK | M6_GPIO_CLK | M7_GPIO_CLK | M8_GPIO_CLK| E1_GPIO_CLK| E2_GPIO_CLK| E3_GPIO_CLK| E4_GPIO_CLK,ENABLE);GPIO_InitStructure.GPIO_Pin = M1_PIN;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(M1_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = M2_PIN;GPIO_Init(M2_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = M3_PIN;GPIO_Init(M3_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = M4_PIN;GPIO_Init(M4_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = M5_PIN;GPIO_Init(M5_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = M6_PIN;GPIO_Init(M6_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = M7_PIN;GPIO_Init(M7_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = M8_PIN;GPIO_Init(M8_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = E1_PIN;GPIO_Init(E1_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = E2_PIN;GPIO_Init(E2_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = E3_PIN;GPIO_Init(E3_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = E4_PIN;GPIO_Init(E4_GPIO_PORT, &GPIO_InitStructure);}
///相关初始化 end ///中间层
void EXTI15_10_IRQHandler(void)
{if(EXTI_GetITStatus(LD3320IRQEXITLINE)!= RESET ) {ProcessInt(); printf("进入中断12\r\n"); EXTI_ClearFlag(LD3320IRQEXITLINE);EXTI_ClearITPendingBit(LD3320IRQEXITLINE);//清除LINE上的中断标志位 }
}static void LD3320_delay(unsigned long uldata)
{unsigned int i = 0;unsigned int j = 0;unsigned int k = 0;for (i=0;i<5;i++){for (j=0;j<uldata;j++){k = 200;while(k--);}}
}static uint8 RunASR(void)
{uint8 i=0;uint8 asrflag=0;for (i=0; i<5; i++) //防止由于硬件原因导致LD3320芯片工作不正常，所以一共尝试5次启动ASR识别流程{LD_AsrStart(); //初始化ASRLD3320_delay(100);if (LD_AsrAddFixed()==0) //添加关键词语到LD3320芯片中{LD_reset(); //LD3320芯片内部出现不正常，立即重启LD3320芯片LD3320_delay(50); //并从初始化开始重新ASR识别流程continue;}LD3320_delay(10);if (LD_AsrRun() == 0){LD_reset(); //LD3320芯片内部出现不正常，立即重启LD3320芯片LD3320_delay(50);//并从初始化开始重新ASR识别流程continue;}asrflag=1;break; //ASR流程启动成功，退出当前for循环。开始等待LD3320送出的中断信号} return asrflag;
}static void LD_reset(void)
{uint8 i;LD_RST_H();LD3320_delay(100);LD_RST_L();LD3320_delay(100);LD_RST_H();LD3320_delay(100);LD_CS_L();LD3320_delay(100);LD_CS_H(); LD3320_delay(100);i=LD_ReadReg(0x6);LD_WriteReg(0x35, 0x33);LD_WriteReg(0x1b, 0x55);LD_WriteReg(0xb3, 0xaa);i=LD_ReadReg(0x35);i=LD_ReadReg(0x1b);i=LD_ReadReg(0xb3);i=i;LD_RST_H();LD3320_delay(100);LD_RST_L();LD3320_delay(100);LD_RST_H();LD3320_delay(100);LD_CS_L();LD3320_delay(100);LD_CS_H(); i=LD_ReadReg(0x6);LD3320_delay(100);i=LD_ReadReg(0x35);i=LD_ReadReg(0x1b);i=LD_ReadReg(0xb3);i=i;
}static void LD_AsrStart(void)
{LD_Init_ASR();
}uint8 LD_Check_ASRBusyFlag_b2(void)
{uint8 j;uint8 flag = 0;for (j=0; j<10; j++){if (LD_ReadReg(0xb2) == 0x21){flag = 1;break;}LD3320_delay(10); }return flag;
}
///中间层end///寄存器操作
static uint8 spi_send_byte(uint8 byte)
{while (SPI_I2S_GetFlagStatus(LD3320SPI, SPI_I2S_FLAG_TXE) == RESET);SPI_I2S_SendData(LD3320SPI,byte);while (SPI_I2S_GetFlagStatus(LD3320SPI,SPI_I2S_FLAG_RXNE) == RESET);return SPI_I2S_ReceiveData(LD3320SPI);
}static void LD_WriteReg(uint8 data1,uint8 data2)
{LD_CS_L();LD_SPIS_L();spi_send_byte(0x04);spi_send_byte(data1);spi_send_byte(data2);LD_CS_H();
}static uint8 LD_ReadReg(uint8 reg_add)
{uint8 i;LD_CS_L();LD_SPIS_L();spi_send_byte(0x05);spi_send_byte(reg_add);i=spi_send_byte(0x00);LD_CS_H();return(i);
}static uint8 LD_GetResult(void)
{return LD_ReadReg(0xc5);
}static uint8 LD_AsrRun(void)
{LD_WriteReg(0x35, MIC_VOL);LD_WriteReg(0x1C, 0x09);LD_WriteReg(0xBD, 0x20);LD_WriteReg(0x08, 0x01);LD3320_delay( 5 );LD_WriteReg(0x08, 0x00);LD3320_delay( 5);if(LD_Check_ASRBusyFlag_b2() == 0){return 0;}LD_WriteReg(0xB2, 0xff); LD_WriteReg(0x37, 0x06);LD_WriteReg(0x37, 0x06);LD3320_delay(5);LD_WriteReg(0x1C, 0x0b);LD_WriteReg(0x29, 0x10);LD_WriteReg(0xBD, 0x00); return 1;
}static void ProcessInt(void)
{uint8 nAsrResCount=0;ucRegVal = LD_ReadReg(0x2B);// 语音识别产生的中断
//（有声音输入，不论识别成功或失败都有中断）LD_WriteReg(0x29,0) ;LD_WriteReg(0x02,0) ;if((ucRegVal & 0x10) && LD_ReadReg(0xb2)==0x21 && LD_ReadReg(0xbf)==0x35) { nAsrResCount = LD_ReadReg(0xba);if(nAsrResCount>0 && nAsrResCount<=4) {nAsrStatus=LD_ASR_FOUNDOK; }else{nAsrStatus=LD_ASR_FOUNDZERO;} }else{nAsrStatus=LD_ASR_FOUNDZERO;//执行没有识别}LD_WriteReg(0x2b,0);LD_WriteReg(0x1C,0);//写0:ADC不可用LD_WriteReg(0x29,0);LD_WriteReg(0x02,0);LD_WriteReg(0x2B,0);LD_WriteReg(0xBA,0); LD_WriteReg(0xBC,0); LD_WriteReg(0x08,1);//清除FIFO_DATALD_WriteReg(0x08,0);//清除FIFO_DATA后 再次写0
}static void LD_Init_Common(void)
{LD_ReadReg(0x06); LD_WriteReg(0x17, 0x35); LD3320_delay(5);LD_ReadReg(0x06); LD_WriteReg(0x89, 0x03); LD3320_delay(5);LD_WriteReg(0xCF, 0x43); LD3320_delay(5);LD_WriteReg(0xCB, 0x02);/*PLL setting*/LD_WriteReg(0x11, LD_PLL_11); if (nLD_Mode == LD_MODE_MP3){LD_WriteReg(0x1E, 0x00); LD_WriteReg(0x19, LD_PLL_MP3_19); LD_WriteReg(0x1B, LD_PLL_MP3_1B); LD_WriteReg(0x1D, LD_PLL_MP3_1D);}else{LD_WriteReg(0x1E,0x00);LD_WriteReg(0x19, LD_PLL_ASR_19); LD_WriteReg(0x1B, LD_PLL_ASR_1B); LD_WriteReg(0x1D, LD_PLL_ASR_1D);}LD3320_delay(5);LD_WriteReg(0xCD, 0x04);LD_WriteReg(0x17, 0x4c); LD3320_delay(1);LD_WriteReg(0xB9, 0x00);LD_WriteReg(0xCF, 0x4F); LD_WriteReg(0x6F, 0xFF);
}static void LD_Init_ASR(void)
{nLD_Mode=LD_MODE_ASR_RUN;LD_Init_Common();LD_WriteReg(0xBD, 0x00);LD_WriteReg(0x17, 0x48); LD3320_delay(5);LD_WriteReg(0x3C, 0x80); LD_WriteReg(0x3E, 0x07);LD_WriteReg(0x38, 0xff); LD_WriteReg(0x3A, 0x07);LD_WriteReg(0x40, 0); LD_WriteReg(0x42, 8);LD_WriteReg(0x44, 0); LD_WriteReg(0x46, 8); LD3320_delay( 1 );
}
///寄存器操作 end
/*********************************************END OF FILE**********************/
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