static
int rcvr_datablock (
BYTE *buff, /* Data buffer to store received data */
UINT btr /* Byte count (must be multiple of 4) */
)
{
BYTE token;
BYTE wt = 200;
do { /* Wait for data packet in timeout of 200ms */
token = xchg_spi(0xFF);
if (token != 0xFF) break;
delay_ms(1);
} while (--wt);
if (token != 0xFE) return 0; /* If not valid data token, retutn with error */
rcvr_spi_multi(buff, btr); /* Receive the data block into buffer */
xchg_spi(0xFF); /* Discard CRC */
xchg_spi(0xFF);
return 1; /* Return with success */
}
static int rcvr_datablock ( /* 1:OK, 0:Error */
BYTE *buff, /* Data buffer */
UINT btr /* Data block length (byte) */
)
{
BYTE token;
//Timer1 = 200;
set_timems(200);
do { // Wait for DataStart token in timeout of 200ms
token = TM_SPI_Send(FATFS_SPI, 0xFF);
// This loop will take a time. Insert rot_rdq() here for multitask envilonment.
} while ((token == 0xFF) && check_time());
if (token != 0xFE) {
printf("rcvr_datablock: token != 0xFE");
return 0; // Function fails if invalid DataStart token or timeout
}
rcvr_spi_multi(buff, btr); // Store trailing data to the buffer
TM_SPI_Send(FATFS_SPI, 0xFF);
TM_SPI_Send(FATFS_SPI, 0xFF); // Discard CRC
return 1; // Function succeeded
}
