Hello,
I am trying to receive the data on LF module in NTM88 TPMS.
Configured the LF module in Data reception mode
device wakeup Due to LF carrier and error flag is set
so unable to debug where is problem like in Premble or sync byte or in wakeup id or in data
Is any way to check received data on LF module like connecting any pin to DSO.
I used X-TPMS88EH11S434 board as LF receiver
and LF transmitter which send 2 ms preamble , 9 T pattern of sync pattern, 2 byte of wakeup id
Following are my LF module setting:
LFCTL1_LFEN = 0;
/* Wait 3ms before writing in the registers */
Delay_TPM_ms(3);
/* Low consumption during sniff mode + LF Ack */
LFS = (LFS_LPSM_MASK | LFS_LFIAK_MASK);
/* LFCTRLE to LFCTRLB are taken care of by vnfLFRConfigFactoryRegs called in TPMS_LF_ENABLE() */
LFCTRLA = 0;
LFCTRLB_LFPOL = 1;
LFCTL2 = 0;
LFCTL3 = (LFCTL3_T9_PATTERN | LFCTL3_DATA_1024_USEC_CARRIER_1024_USEC);
/* Enable Data Mode interrupts, enable the digital decoder and carrier */
/* validation, and set sync time-out */
LFCTL4 = (LFCTL4_LFDRIE_MASK | LFCTL4_DCEN_MASK | LFCTL4_VALEN_MASK
| LFCTL4_SYNC_SET_TO_24_MSEC | LFCTL4_LFCDIE_MASK | LFCTL4_LFIDIE_MASK);//|LFCTL4_LFERIE_MASK);
/* Set ID values */
LFIDH = ((UINT8) 0x12u);
LFIDL = ((UINT8)0x34u);
/* Disable carrier mode */
LFCTL1_CARMOD = 0;
/* Set ID type to 16-bit type */
LFCTL1_IDSEL = IDSEL_TYPE_16_BIT;
/* Set sensitivity */
LFCTL1_SENS = 2; // High sensitivity
