DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0) */
)
{
UINT cmd, n;
DWORD resp[4];
BYTE ty;
if (drv) return STA_NOINIT; /* Supports only single drive */
if (Stat & STA_NODISK) return Stat; /* No card in the socket */
power_on(); /* Force socket power on */
MCI_CLOCK = 0x100 | (PCLK/MCLK_ID/2-1); /* Set MCICLK = MCLK_ID */
for (Timer[0] = 2; Timer[0]; );
LEDR_ON();
send_cmd(CMD0, 0, 0, NULL); /* Enter idle state */
CardRCA = 0;
/*---- Card is 'idle' state ----*/
Timer[0] = 1000; /* Initialization timeout of 1000 msec */
if (send_cmd(CMD8, 0x1AA, 1, resp) /* SDC Ver2 */
&& (resp[0] & 0xFFF) == 0x1AA) { /* The card can work at vdd range of 2.7-3.6V */
do { /* Wait while card is busy state (use ACMD41 with HCS bit) */
if (!Timer[0]) goto di_fail;
} while (!send_cmd(ACMD41, 0x40FF8000, 1, resp) || !(resp[0] & 0x80000000));
ty = (resp[0] & 0x40000000) ? CT_SD2 | CT_BLOCK : CT_SD2; /* Check CCS bit in the OCR */
}
else { /* SDC Ver1 or MMC */
if (send_cmd(ACMD41, 0x00FF8000, 1, resp)) {
ty = CT_SD1; cmd = ACMD41; /* ACMD41 is accepted -> SDC Ver1 */
} else {
ty = CT_MMC; cmd = CMD1; /* ACMD41 is rejected -> MMC */
}
do { /* Wait while card is busy state (use ACMD41 or CMD1) */
if (!Timer[0]) goto di_fail;
} while (!send_cmd(cmd, 0x00FF8000, 1, resp) || !(resp[0] & 0x80000000));
}
CardType = ty; /* Save card type */
bswap_cp(&CardInfo[32], resp); /* Save OCR */
/*---- Card is 'ready' state ----*/
if (!send_cmd(CMD2, 0, 2, resp)) goto di_fail; /* Enter ident state */
for (n = 0; n < 4; n++) bswap_cp(&CardInfo[n * 4 + 16], &resp[n]); /* Save CID */
/*---- Card is 'ident' state ----*/
if (ty & CT_SDC) { /* SDC: Get generated RCA and save it */
if (!send_cmd(CMD3, 0, 1, resp)) goto di_fail;
CardRCA = (WORD)(resp[0] >> 16);
} else { /* MMC: Assign RCA to the card */
if (!send_cmd(CMD3, 1 << 16, 1, resp)) goto di_fail;
int main(void) {
uint8_t i;
uint8_t ChkSum;
cli();
//#asm("cli");
DDRB = 0x00; //PB INPUT;
DDRD = 0x00; //PD INPUT;
//POWER ON indication: both LEDR and LEDG blink 3 times
LEDG_OFF();
LEDR_OFF();
LEDG_OUTPUT();
LEDR_OUTPUT();
for (i=0; i<3; i++) {
_delay_ms(200);
//Delay_ms(200);
LEDG_ON();
LEDR_ON();
_delay_ms(200);
//Delay_ms(200);
LEDG_OFF();
LEDR_OFF();
}
LEDG_OFF();
LEDR_OFF();
RFXX_PORT_INIT();
RF12_INIT();
DDRD |= (1 << RF12_DATA);
PORTD |= (1 << RF12_DATA); // SET nFFS pin HI when using TX register
DDRD &= ~(1 << DDD2); // PD2(INT0)
while (1) {
LEDR_ON();
rfxx_wrt_cmd(0x0000); //read status register
rfxx_wrt_cmd(0x8239); //!er,!ebb,ET,ES,EX,!eb,!ew,DC
ChkSum=0;
rf12_send(0xAA); //PREAMBLE
rf12_send(0xAA); //PREAMBLE
rf12_send(0xAA); //PREAMBLE
rf12_send(0x2D); //SYNC HI BYTE
rf12_send(0xD4); //SYNC LOW BYTE
// send data bytes
for (i = 0x30; i<=0x3F; ++i) {
rf12_send(i);
ChkSum += i;
}
/*
rf12_send(0x30); //DATA BYTE 0
ChkSum+=0x30;
rf12_send(0x31); //DATA BYTE 1
ChkSum+=0x31;
rf12_send(0x32);
ChkSum+=0x32;
rf12_send(0x33);
ChkSum+=0x33;
rf12_send(0x34);
ChkSum+=0x34;
rf12_send(0x35);
ChkSum+=0x35;
rf12_send(0x36);
ChkSum+=0x36;
rf12_send(0x37);
ChkSum+=0x37;
rf12_send(0x38);
ChkSum+=0x38;
rf12_send(0x39);
ChkSum+=0x39;
rf12_send(0x3A);
ChkSum+=0x3A;
rf12_send(0x3B);
ChkSum+=0x3B;
rf12_send(0x3C);
ChkSum+=0x3C;
rf12_send(0x3D);
ChkSum+=0x3D;
rf12_send(0x3E);
ChkSum+=0x3E;
rf12_send(0x3F); //DATA BYTE 15
ChkSum+=0x3F;
*/
rf12_send(ChkSum); //send chek sum
rf12_send(0xAA); //DUMMY BYTE
rf12_send(0xAA); //DUMMY BYTE
rf12_send(0xAA); //DUMMY BYTE
rfxx_wrt_cmd(0x8201);
LEDR_OFF();
LEDG_OFF();
//for(i=0;i<10000;i++)
// for(j=0;j<123;j++); //sleep 1 second appr.
_delay_ms(1000);
}
}
void main( void )
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD;
TA1CCTL0 = CCIE; // CCR0 interrupt enabled
TA1CCR0 = 50000;
TA1CTL = TASSEL_2 + MC_1 + TACLR; // SMCLK, upmode, clear TAR
__bis_SR_register(GIE);
//WDTCTL = WDT_ARST_250;
//SFRIE1 |= WDTIE; // Enable WDT interrupt
// Increase PMMCOREV level to 2 for proper radio operation
SetVCore(2);
ResetRadioCore();
InitRadio();
InitButtonLeds();
InitUart();
ReceiveOn();
receiving = 1;
_EINT();
while (1)
{
//WDTCTL = WDT_ARST_250;
// __bis_SR_register( LPM3_bits + GIE );
__no_operation();
if((!(BUTTON_IN & (1<<BUTTON_BIT))))
{
_NOP();
delayms(30);
if(!(BUTTON_IN & (1<<BUTTON_BIT)))
{
_NOP();
buttonPressed = 1;
LEDR_ON();
ReceiveOff();
receiving = 0;
Transmit( (unsigned char*)TxBuffer,sizeof TxBuffer);
transmitting = 1;
while(!(BUTTON_IN & (1<<BUTTON_BIT)));
}
}
if(!transmitting)
{
ReceiveOn();
receiving = 1;
}
if(buttonPressed && transmit == 1)
{
LEDR_ON();
ReceiveOff();
receiving = 0;
Transmit( (unsigned char*)TxBuffer,sizeof TxBuffer);
transmitting = 1;
transmit = 0;
receive = 1;
delayms(500);
buttonPressed = 0;
}
if(count == 20 && buttonPressed == 0 && receive == 1)
{
buttonPressed = 1;
count = 0;
transmit = 1;
receive = 0;
}
}
}
