SD Card interface then play mp3 by pic

[tsupuntu]

I used ossiloscope measure clock signal but NO SIGNAL
Why not work?please help me.




// Configure chip and compiler
#include "18F458.h"
#fuses EC_IO,NOWDT,NOPROTECT,NOBROWNOUT,NOLVP
#use delay(clock=16000000)
#use rs232(baud=57600, xmit=PIN_C6, rcv=PIN_C7)
#zero_ram

// Aliases for the pins used
#define F88_Servo_CS PIN_B5

#define F88_Aquire_Time 100

// Function prototypes
int readF88(void);

void main(void)
{
// Variables
int data;

// Configure pin direction, format is port X, pin 7 => pin 0; 1 is in, 0 is out
#use fast_io(A)
#use fast_io(B)
#use fast_io(C)
#use fast_io(D)
#use fast_io(E)
set_tris_a(0b00000000);
set_tris_b(0b10000000);
set_tris_c(0b10010000);
set_tris_d(0b00000000);
set_tris_e(0b00000000);

// Initially set all SPI chip selects to disable
output_high(F88_Servo_CS); // F88 CS is active low

// Setup the SPI port
setup_spi(SPI_MASTER | SPI_L_TO_H | SPI_CLK_DIV_16);

while(1)
{
data = readF88();
printf("This is the data from F88: %d\n",data);
delay_us(100);
}

return;
}

int readF88(void)
{
int F88data;

output_low(F88_Servo_CS); // select the F88 to begin aquisition of data from external source
delay_us(F88_Aquire_Time); // wait the prescribed aquisition delay
F88data = spi_read(0); // aquire the data from the F88 by sending out a clock
output_high(F88_Servo_CS); // disable the F88

return F88data;
}

[tavioman]

Where is MP3 or SD?

[ckielstra]

Please, next time make sure your subject title matches the question.

What kind of clock circuit are you using? Is it a crystal or something else?