使用了 DMA方式,整体运行过程很正常,发送数据也正常,就是无规律出现卡顿一下.听起来很不爽,请高手指点一下,我贴出所有的代码
VS1003代码:
#include <stm32f10x.h>
#include <stdio.h>
#include "vs1003.h"
#include "LED.h"
#include "RTL.h"
#define GPIOA_Clr(PIN) (GPIOA->BRR = PIN)
#define GPIOA_Set(PIN) (GPIOA->BSRR = PIN)
#define WT_DREQ while((GPIOC->IDR & VS_DREQ_Pin)==0)
#define SPI_I2S_FLAG_RXNE ((uint16_t)0x0001)
#define SPI_I2S_FLAG_TXE ((uint16_t)0x0002)
#define SPI1_DR (0x4001300C)
#define SIZE 1024
u8 SrcA[SIZE];
u8 SrcB[SIZE];
u8 up;
u8 dw; //µ±Îª1ʱ±íʾ£¬ÐèÒª¼ÓÔØ
static FILE *fm = NULL;
void VS_DREQ_IRQ(void)
{
AFIO->EXTICR[0] &=~0x0000F000;
AFIO->EXTICR[0] |= 0x00002000;
NVIC->IP[9] = 0x40;
NVIC->ISER[0] |= 0x0200;
EXTI->IMR &= ~0x00000008;
EXTI->EMR &= ~0x00000008;
EXTI->IMR |= 0x00000008;
EXTI->FTSR &= ~0x00000008;
EXTI->RTSR |= 0x00000008; //ÉÏÉýÑØ´¥·¢
}
//ÍⲿÖжϴ¦Àíº¯Êý
void EXTI3_IRQHandler(void)
{
//LED_TURN(2);
EXTI->PR =0x00000008;
}
//ÕâÊÇ´ÖÂÔµÄÑÓʱ£¬ÏµÍ³Ê±ÖÓΪ72M
static void delay_ms(u16 time)
{
u16 i=0;
while(time--)
{
i=8000;
while(i--) ;
}
}
void VS_SPI_SetSpeed_Low(void)
{
//SPI1->CR1 &=~ (uint16_t)0x0040;
SPI1->CR1 |= (SPI1->CR1 & (uint16_t)0xFFC7)|((uint16_t)0x0038);
SPI1->CR1 |= (uint16_t)0x0040;
}
void VS_SPI_SetSpeed_Hig(void)
{
SPI1->CR1 |= (SPI1->CR1 & (uint16_t)0xFFC7);//|((uint16_t)0x0010);
SPI1->CR1 |= (uint16_t)0x0040;
}
void VS_GPIO_Init(void)
{
RCC->APB2ENR |= 0x00001015;
GPIOA->CRL &=~0xFFFFF00F;
GPIOA->CRL |= 0xBBB33003;
GPIOC->CRL &=~0x0000F000;
GPIOC->CRL |= 0x00008000;
GPIOC->BRR |= 0x00000008;
}
void VS_SPI_Init(void)
{
SPI1->CR1 = 0x0374;
SPI1->CR2 = 0x0000;
SPI1->CRCPR = 0x0007;
SPI1->I2SCFGR = 0x0000;
}
void VS_DMA_M2P_Init(void)
{
RCC->AHBENR |= 0x00000001;
DMA1->IFCR = 0x00000F00;
NVIC->IP[13] = 0x40;
NVIC->ISER[0] |= 0x2000;
up = 0;
dw = 0;
/*
ÓÅÏȼ¶£º¸ß
ÄÚ´æÓëÍâÉè¿í¶È 8λ
ÄÚ´æµØÖ·£º×ÔÔö
ÍâÉèµØÖ·£º²»±ä
·½Ïò£ºÄÚ´æµ½ÍâÉè
Öжϣº´«ÊäÍê³ÉÖжÏ
Æô¶¯£º·ñ
*/
DMA_CH->CCR = 0x00002092;
DMA_CH->CNDTR = 32;//ÿ´Î´«Êä 32×Ö½Ú
DMA_CH->CPAR = (uint32_t)SPI1_DR;
DMA_CH->CMAR = (uint32_t)&SrcA[0];
}
void VS_DMA_M2P_Start(char* filename)
{
int ok;
ok=finit("M");
if(ok==0)
{
fm = fopen((const char*)filename,"r");
if(fm!=NULL)
{
fread((void *)SrcA,1,SIZE,fm);
fread((void *)SrcB,1,SIZE,fm);
}
}
GPIOA_Set(VS_XCS_Pin);
GPIOA_Clr(VS_XDCS_Pin);
DMA1->IFCR = 0x00000F00;
DMA_CH->CNDTR = 32;
DMA_CH->CCR |= 0x00000001;
SPI1->CR2 |= 0x0002;
}
void VS_DMA_M2P_Stop(void)
{
DMA_CH->CCR &=~ 0x00000001;
DMA1->IFCR = 0x00000F00;
//while((SPI1->SR & SPI_I2S_FLAG_TXE) == 0);
//while((SPI1->SR & 0x0080)>0);//´«ÊäÈ«²¿Íê³É
}
void VS_DMA_M2P_Continue(void)
{
// GPIOA_Set(VS_XCS_Pin);
// GPIOA_Clr(VS_XDCS_Pin);
DMA_CH->CNDTR = 32;
DMA_CH->CCR |= 0x00000001;
}
void DMA1_Channel3_IRQHandler(void)//SPI_DMA´«ÊäÍê³Éºó
{
static u16 addr=0;
static u32 sp=1;
VS_DMA_M2P_Stop();
addr+=32;
if(addr==SIZE*2)
{
addr = 0;
dw = sp++;
LED_ON(4);
}
if(addr==SIZE)
{
up=sp++;
LED_ON(3);
}
if(addr<SIZE)
DMA_CH->CMAR = (uint32_t)&SrcA[addr];
if(addr>=SIZE)
DMA_CH->CMAR = (uint32_t)&SrcB[addr-SIZE];
if((up ==0 && addr<SIZE ) || (dw == 0 && addr>=SIZE ))
if((GPIOC->IDR & VS_DREQ_Pin)>0)
{
VS_DMA_M2P_Continue();
}
}
void VS_Load_Data(DataItem im)
{
LED_TURN(2);
if(im == I_Up)
{fread((void *)SrcA,1,SIZE,fm);
LED_OFF(3);
up=0;
}
if(im == I_Dw)
{fread((void *)SrcB,1,SIZE,fm);
LED_OFF(4);
dw=0;
}
if(feof(fm)){rewind(fm);}
}
void VS1003_CMD_Write_32b(u8 address,u16 data)
{
WT_DREQ;
GPIOA_Set(VS_XDCS_Pin);
GPIOA_Clr(VS_XCS_Pin);
SPI_ReadWrite_Byte(0x02);//дÃüÁî
SPI_ReadWrite_Byte(address);//дÃüÁî
SPI_ReadWrite_Byte((u8)(data>>8));//дÃüÁî
SPI_ReadWrite_Byte((u8)data);//дÃüÁî
GPIOA_Set(VS_XCS_Pin);
}
void VS1003_SoftReset(void)
{
VS1003_CMD_Write_32b(VS_CMD_MODE,VS_SM_SDINEW|VS_SM_RESET);
delay_ms(3);
WT_DREQ;
delay_ms(1);
GPIOA_Clr(VS_XDCS_Pin);
GPIOA_Clr(VS_XCS_Pin);
SPI_ReadWrite_Byte(0xFF);
SPI_ReadWrite_Byte(0xFF);
SPI_ReadWrite_Byte(0xFF);
SPI_ReadWrite_Byte(0xFF);
GPIOA_Set(VS_XDCS_Pin);
}
void VS1003_Reset(void)
{
GPIOA_Clr(VS_RST_Pin);
delay_ms(100);
SPI_ReadWrite_Byte(0xFF);
GPIOA_Set(VS_XCS_Pin);
GPIOA_Set(VS_XDCS_Pin);
GPIOA_Set(VS_RST_Pin);
delay_ms(100);
WT_DREQ;
delay_ms(100);
VS1003_CMD_Write_32b(VS_CMD_MODE,VS_SM_SDINEW|VS_SM_RESET);//·¢Ë͸´Î»ÃüÁî 02 00 08 04
delay_ms(5);
WT_DREQ;
VS1003_SoftReset();//Èí¼þ¸´Î»Ò»´Î
}
//³õʼ»¯vs1003
void VS1003_Init(void)
{
VS_GPIO_Init();
VS_SPI_Init();
VS_DMA_M2P_Init();
//VS_DREQ_IRQ();
//VS_SPI_SetSpeed_Low();
VS1003_Reset();//¸´Î»Ò»´Î,°üÀ¨Ó²¸´Î» ÓëÈí¼þ¸´Î»,¸÷Ò»´Î
VS1003_CMD_Write_32b(VS_CMD_MODE,0x0800);
VS1003_CMD_Write_32b(VS_CMD_CLOCKF,0x9800);
VS1003_CMD_Write_32b(VS_CMD_AUDATA,0xBB81);
VS1003_CMD_Write_32b(VS_CMD_BASS,0x0055);
VS1003_CMD_Write_32b(VS_CMD_VOL,0x0000);
//VS_SPI_SetSpeed_Hig();
}
u8 SPI_ReadWrite_Byte(u8 data)
{
while((SPI1->SR & SPI_I2S_FLAG_TXE) == 0);
SPI1->DR = data;
while((SPI1->SR & SPI_I2S_FLAG_RXNE) == 0);
return SPI1->DR;
}
u16 VS1003_CMD_Read_32b(u8 address)
{
u8 data1=0;
u8 data2=0;
WT_DREQ;
GPIOA_Set(VS_XDCS_Pin);
GPIOA_Clr(VS_XCS_Pin);
SPI_ReadWrite_Byte(0x03);//¶ÁÃüÁî
SPI_ReadWrite_Byte(address);//µØ
data1 = SPI_ReadWrite_Byte(0xAA);//дÃüÁî
data2 = SPI_ReadWrite_Byte(0xAA);//дÃüÁî
GPIOA_Set(VS_XCS_Pin);
return ((u16)data1<<8)|((u16)data2);
}
void VS1003_DATA_Write_1Byte(u8 dat)
{
GPIOA_Clr(VS_XDCS_Pin);
GPIOA_Set(VS_XCS_Pin);
SPI_ReadWrite_Byte(dat);
GPIOA_Set(VS_XDCS_Pin);
}
//Ò»´Î·¢ËÍ32×Ö½Ú£¬²»ÊÇ32룬ÇмÇ
void VS1003_DATA_Write_32Byte(u8 *buf)
{
u8 i;
GPIOA_Set(VS_XCS_Pin);
GPIOA_Clr(VS_XDCS_Pin);
for(i=0;i<32;i++)
{
SPI_ReadWrite_Byte(*(buf+i));
}
GPIOA_Set(VS_XDCS_Pin);
}
u8 VS_DREQ_Hig(void)
{
return ((GPIOC->IDR & VS_DREQ_Pin)==0)?0:1;
}
main函数代码
#include "stm32f10x.h"
#include "printf.h" //¼ÓÔØ´ËÍ·Îļþ
#include "SPI.h"
#include <string.h>
#include <stdio.h>
#include "LED.h"
#include "vs1003.h"
#include "RTL.h"
extern u8 up;
extern u8 dw; //µ±Îª1ʱ±íʾ£¬ÐèÒª¼ÓÔØ
int main(void)
{
USART_Init();
SPI_Init_ALL();
VS1003_Init();
LED_Init();
VS_DMA_M2P_Start("1.mp3");
while(1)
{
if((up>0&&dw==0)||(up>0&&dw>0&&up<dw))
{
VS_Load_Data(I_Up);
}
if((dw>0&&up==0)||(dw>0&&up>0&&dw<up))
{
VS_Load_Data(I_Dw);
}
if((GPIOC->IDR & VS_DREQ_Pin)>0){
if((DMA_CH->CCR & 0x00000001) ==0)
{
VS_DMA_M2P_Continue();
}
}
}
}
现在可以播放SD卡上的文件,就是在播放时 偶尔出现卡顿!
需要什么测试数据,波形什么的,尽管给我说,我做给大家看!
---如果有什么好的建议也是可以的 |
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