/*******************************************************************************
* Function Name : VsRamTest
* Description : Test VS1003's register,if received value is 0x807F,then
indicate the VS1003 is OK.
* Input : None.
* Output : None
* Return : None
*******************************************************************************/
void VsRamTest(void)
{
u16 regvalue ;
regvalue = 0;
ControlReset(SET);
Delay(100);
SPIPutChar(0xff); //����ҝ���ֽھ���Ч���ݣ�����SPI����
SCI_ChipSelect(RESET);
SDI_ChipSelect(RESET);
ControlReset(RESET);
Delay(100);
Mp3WriteRegister(SPI_MODE,0x09,0x00); // ����vs1003�IJ���ģʽ
while(DREQ); // �ȴ�DREQΪ��
SDI_ChipSelect(SET); // xDCS = 1��ѥ��vs1003�����ݽӿ�
SPIPutChar(0x4d);
SPIPutChar(0xea);
SPIPutChar(0x6d);
SPIPutChar(0x54);
SPIPutChar(0x00);
SPIPutChar(0x00);
SPIPutChar(0x00);
SPIPutChar(0x00);
Delay(500);
SDI_ChipSelect(RESET);
regvalue = Mp3ReadRegister(SPI_HDAT0); // ����þ���־Ϊ0x807F���������å�
}
SPI_Cmd(SPI1, ENABLE); // enable SPI1
// SPI_SSOutputCmd(SPI1, ENABLE);
/* Enable SPI1 */
SPI_Cmd(SPI1, ENABLE);
// GPIOB->BSRRL|=GPIO_BSRR_BR_3; /////w�acznie uk��du
}
uint16_t VS1003_GetBitrate(void)
{
uint16_t bitrate = (Mp3ReadRegister(SPI_HDAT0) & 0b1111000000000000) >> 12;
uint8_t ID = (Mp3ReadRegister(SPI_HDAT1) & 0b0000000000011000) >> 3;
uint16_t res;
if (ID == 3)
{ res = 32;
while(bitrate>13)
{
res+=64;
bitrate--;
}
while (bitrate>9)
{
res+=32;
bitrate--;
}
while (bitrate>5)
//Inits everything
uint8_t SFEMP3Shield::begin(){
pinMode(MP3_DREQ, INPUT);
pinMode(MP3_XCS, OUTPUT);
pinMode(MP3_XDCS, OUTPUT);
pinMode(MP3_RESET, OUTPUT);
digitalWrite(MP3_XCS, HIGH); //Deselect Control
digitalWrite(MP3_XDCS, HIGH); //Deselect Data
digitalWrite(MP3_RESET, LOW); //Put VS1053 into hardware reset
//Setup SD card interface
//Pin 10 must be set as an output for the SD communication to work.
//pinMode(10, OUTPUT);
//pinMode(53, OUTPUT);
//Initialize the SD card and configure the I/O pins.
if (!card.init(SPI_FULL_SPEED, SD_SEL)) return 1; // Serial.println("Error: Card init");
//Initialize a volume on the SD card.
if (!volume.init(&card)) return 2; //Serial.println("Error: Volume ini");
//Open the root directory in the volume.
if (!root.openRoot(&volume)) return 3; //Serial.println("Error: Opening root"); //Open the root directory in the volume.
//We have no need to setup SPI for VS1053 because this has already been done by the SDfatlib
//From page 12 of datasheet, max SCI reads are CLKI/7. Input clock is 12.288MHz.
//Internal clock multiplier is 1.0x after power up.
//Therefore, max SPI speed is 1.75MHz. We will use 1MHz to be safe.
SPI.setClockDivider(SPI_CLOCK_DIV16); //Set SPI bus speed to 1MHz (16MHz / 16 = 1MHz)
SPI.transfer(0xFF); //Throw a dummy byte at the bus
//Initialize VS1053 chip
delay(10);
digitalWrite(MP3_RESET, HIGH); //Bring up VS1053
SFEMP3Shield::SetVolume(40, 40);
VolL = 40;
VolR = 40;
//Let's check the status of the VS1053
int MP3Mode = Mp3ReadRegister(SCI_MODE);
//int MP3Clock = Mp3ReadRegister(SCI_CLOCKF);
/*
Serial.print("SCI_Mode (0x4800) = 0x");
Serial.println(MP3Mode, HEX);
Serial.print("SCI_Status (0x48) = 0x");
Serial.println(MP3Status, HEX);
Serial.print("SCI_ClockF = 0x");
Serial.println(MP3Clock, HEX);
*/
if(MP3Mode != 0x4800) return 4;
//Now that we have the VS1053 up and running, increase the internal clock multiplier and up our SPI rate
Mp3WriteRegister(SCI_CLOCKF, 0x60, 0x00); //Set multiplier to 3.0x
//From page 12 of datasheet, max SCI reads are CLKI/7. Input clock is 12.288MHz.
//Internal clock multiplier is now 3x.
//Therefore, max SPI speed is 5MHz. 4MHz will be safe.
SPI.setClockDivider(SPI_CLOCK_DIV4); //Set SPI bus speed to 4MHz (16MHz / 4 = 4MHz)
//test reading after data rate change
int MP3Clock = Mp3ReadRegister(SCI_CLOCKF);
if(MP3Clock != 0x6000) return 5;
return 0;
}