如题,使用的是研旭28335的例程,如何对采集的数据进行处理?是直接使用数组吗,以及是在中断函数处理还是主函数。附上aic23语音采集例程- #include "DSP2833x_Device.h" // DSP2833x Headerfile Include File
- #include "DSP2833x_Examples.h" // DSP2833x Examples Include File
- Uint16 volume,tAicRegs;
- int ADbuf[500];
- int DA_wptr,DA_rptr,y;
- Uint16 play_mode=1; //采集输出模式
- void main(void)
- {
- Uint16 temp,i;
- // Step 1. Initialize System Control:
- // PLL, WatchDog, enable Peripheral Clocks
- // This example function is found in the DSP2833x_SysCtrl.c file.
- InitSysCtrl();
- // Step 2. Initalize GPIO:
- // This example function is found in the DSP2833x_Gpio.c file and
- // illustrates how to set the GPIO to it's default state.
- // InitGpio(); // Skipped for this example
- // For this example, only enable the GPIO for McBSP-A
- InitXintf16Gpio();
- InitMcbspaGpio();
- EALLOW; //对aicIO口进行初始化
- GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 0; //aic_dat
- GpioCtrlRegs.GPADIR.bit.GPIO12 = 1;
- GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0;
- GpioCtrlRegs.GPAMUX1.bit.GPIO13 = 0; //aic_CS
- GpioCtrlRegs.GPADIR.bit.GPIO13 = 1;
- GpioCtrlRegs.GPAPUD.bit.GPIO13 = 0;
- GpioCtrlRegs.GPBMUX2.bit.GPIO61 = 0; //aic_clk
- GpioCtrlRegs.GPBDIR.bit.GPIO61 = 1;
- GpioCtrlRegs.GPBPUD.bit.GPIO61 = 0;
- EDIS;
- // Step 3. Clear all interrupts and initialize PIE vector table:
- // Disable CPU interrupts
- DINT; //INT置1,关中断,并初始化PIE矢量表;禁用CPU中断
- // Initialize PIE control registers to their default state.
- // The default state is all PIE interrupts disabled and flags
- // are cleared.
- // This function is found in the DSP2833x_PieCtrl.c file.
- InitPieCtrl(); //初始化中断寄存器
- // Disable CPU interrupts and clear all CPU interrupt flags:
- IER = 0x0000;
- IFR = 0x0000; //禁用CPU中断并清除所有CPU中断标志
- // Initialize the PIE vector table with pointers to the shell Interrupt
- // Service Routines (ISR).
- // This will populate the entire table, even if the interrupt
- // is not used in this example. This is useful for debug purposes.
- // The shell ISR routines are found in DSP2833x_DefaultIsr.c.
- // This function is found in DSP2833x_PieVect.c.
- InitPieVectTable(); //初始化中断矢量表
- // Step 4. Initialize all the Device Peripherals:
- // This function is found in DSP2833x_InitPeripherals.c
- // InitPeripherals(); // Not required for this example
- InitMcbspa(); // Initalize the Mcbsp-A in loopback test mode,初始化MCBSP-A模块
- // tAicRegs = 0xFF;
- // SysReg = tAicRegs;
- InitAic23(); //初始化AIC23,
- delay(500); //延时500ms?并不是,大约为34ms;
- volume=108; //设置播放的音量
- WriteAic23(L_HEADPHONE_VOLUME,0x0180+volume); //***********
-
- EALLOW; // This is needed to write to EALLOW protected registers
- PieVectTable.MRINTA = &ISRMcbspSend; //中断子程序
- EDIS; // This is needed to disable write to EALLOW protected registers
- PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
- PieCtrlRegs.PIEIER6.bit.INTx5=1; // Enable PIE Group 6, INT 5
- IER |= M_INT6; // Enable CPU INT6,中断使能?
- EINT; // Enable Global interrupt INTM
- while(1)
- {
- for(temp=30000;temp>0;temp-=100)
- {
- for(i=0;i<2;i++)
- {
- y=5000;
- delay(temp);
- // McbspaRegs.DXR1.all = y;
- y=-5000;
- delay(temp);//这什么意思**********
- //McbspaRegs.DXR1.all = y;
- }
- }
- }
- }
- interrupt void ISRMcbspSend(void)
- {
- int temp;
- PieCtrlRegs.PIEACK.all = PIEACK_GROUP6;
- temp=McbspaRegs.DRR1.all;
-
- DA_rptr++;
- if(DA_rptr>=500)
- DA_rptr=0;
- ADbuf[DA_rptr]=temp; //保存录音数据
-
- if(play_mode==0)
- McbspaRegs.DXR1.all = y;
- //警报声的幅值
- else
- McbspaRegs.DXR1.all = temp; //放音
- }
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