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| #include "vs1003.h"
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| #include "SysTick.h"
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| void VS1003_SPI_Init(void)
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| {
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| SPI_InitTypeDef SPI_InitStructure;
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| GPIO_InitTypeDef GPIO_InitStructure;
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| RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC , ENABLE);
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| RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2 ,ENABLE);
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| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
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| GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;
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| GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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| GPIO_Init(GPIOB, &GPIO_InitStructure);
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| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
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| GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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| GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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| GPIO_Init(GPIOB, &GPIO_InitStructure);
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| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
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| GPIO_Init(GPIOB, &GPIO_InitStructure);
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| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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| GPIO_Init(GPIOC, &GPIO_InitStructure);
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| GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
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| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
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| GPIO_Init(GPIOC, &GPIO_InitStructure);
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| SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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| SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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| SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
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| SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
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| SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
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| SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
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| SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
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| SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
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| SPI_InitStructure.SPI_CRCPolynomial = 7;
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| SPI_Init(SPI2, &SPI_InitStructure);
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| SPI_Cmd(SPI2, ENABLE);
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| }
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| u8 VS1003_WriteByte( u8 byte )
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| {
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| while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
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| SPI_I2S_SendData(SPI2, byte);
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| while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
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| return SPI_I2S_ReceiveData(SPI2);
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| }
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| u8 VS1003_ReadByte(void)
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| {
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| while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
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| SPI_I2S_SendData(SPI2, 0);
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| while(SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
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| return SPI_I2S_ReceiveData(SPI2);
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| }
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| void Mp3WriteRegister(u8 addressbyte, u8 highbyte, u8 lowbyte)
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| {
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| TXDCS_SET(1);
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| TCS_SET(0);
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| VS1003_WriteByte( VS_WRITE_COMMAND );
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| VS1003_WriteByte( addressbyte );
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| VS1003_WriteByte( highbyte );
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| VS1003_WriteByte( lowbyte );
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| TCS_SET(1);
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| }
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| u16 Mp3ReadRegister(u8 addressbyte)
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| {
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| u16 resultvalue = 0;
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| TXDCS_SET(1);
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| TCS_SET(0);
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| VS1003_WriteByte(VS_READ_COMMAND);
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| VS1003_WriteByte((addressbyte));
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| resultvalue = (unsigned int )(VS1003_ReadByte() << 8);
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| resultvalue |= VS1003_ReadByte();
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| TCS_SET(1);
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| return resultvalue;
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| }
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| void MP3_Start(void)
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| {
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| u8 BassEnhanceValue = 0x00;
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| u8 TrebleEnhanceValue = 0x00;
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| TRST_SET(0);
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| Delay_us( 1000 );
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| VS1003_WriteByte(0xff);
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| TXDCS_SET(1);
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| TCS_SET(1);
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| TRST_SET(1);
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| Delay_us( 1000 );
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| Mp3WriteRegister( SPI_MODE,0x08,0x00);
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| Mp3WriteRegister(3, 0x98, 0x00);
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| Mp3WriteRegister(5, 0xBB, 0x81);
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| Mp3WriteRegister(SPI_BASS, TrebleEnhanceValue, BassEnhanceValue);
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| Mp3WriteRegister(0x0b,0x00,0x00);
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| Delay_us( 1000 );
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| while( DREQ == 0 );
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| }
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