Cypress Semiconductor CY8C21534 Especificaciones descargar pdf (Pagina 55)

Appendix 2

5(15)

Write_enable_Start();

Loading_LED_Start();

Counter8_WritePeriod(0x60);

Counter8_WriteCompareValue(0x30);

Counter8_Start();

UART_Start(UART_PARITY_NONE);

// Makes ready Write_enable for operation

// Makes ready Loading_LED for operation

// Sets period to 60 clocks

// Generates a 50% duty cycle

// Starts counter //

Enables UART

SPIM_Start(SPIM_SPIM_MODE_0 | SPIM_SPIM_MSB_FIRST); // Sets SD SPI parameters

SPIM2_Start(SPIM2_SPIM_MODE_0 | SPIM2_SPIM_MSB_FIRST);// Sets Debug SPI parameters

while(1)

{

// Waits for button press

if ((PRT2DR & 0x04) == 0x04)

{

file[4] = 0x31;

k = 1;

}

else if ((PRT2DR & 0x10) == 0x10)

{

file[4] = 0x32;

k = 1;

}

else if ((PRT2DR & 0x40) == 0x40)

{

file[4] = 0x33;

k = 1;

}

else if ((PRT0DR & 0x01) == 0x01)

{

file[4] = 0x34;

k = 1;

}

else if ((PRT0DR & 0x04) == 0x04)

{

file[4] = 0x35;

k = 1;

}

if(k == 1)

{

WiFly_pwr_Switch(1);

Write_enable_Switch(1);

Loading_LED_Switch(1);

// Button P2.2

// Changes file number to 1

// Button P2.4

// Changes file number to 2

// Button P2.6

// Changes file number to 3

// Button P0.0

// Changes file number to 4

// Button P0.2

// Changes file number to 5

// Turns on WiFly power

// Enables writing to SD card

// Turns on LED to show operational status

// Waits for incoming byte of 'O' to show WyFly has made a connection

while(UART_cReadChar() != 0x4F);

// Catches extra 'O' bytes that are sent by WiFly.

while(UART_bReadRxData() == 0x4F);

// Sends request for file

for(i=0; i<5; i++)

{

UART_PutChar(file[i]);

}

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