TJK1145 module read device number error

gm2010ustc — Wed, 13 Mar 2019 03:12:19 GMT

I recently debugged the TJK1145 module and used the spi interface to read the device ID. The data read is the same as the data written. Is there a problem with my driver? The comment in the code is the interface function written by the register. This function is no problem. The following is what I wrote with the sdk interface function. Is this correct?

u8 TJA1145_WriteByte(u8 u8Data)
{
#if 0
u8 u8DataReadBack;
DSPI_0.PUSHR.PUSHR.R = (u32)((u32)u8Data + 0x08010000);
//DSPI_0.PUSHR.PUSHR.B.PCS = 0;
while (DSPI_0.SR.B.TCF != 1){}

DSPI_0.SR.B.TCF = 1;

while (DSPI_0.SR.B.RFDF != 1){}
u8DataReadBack = (u8)DSPI_0.POPR.R;
DSPI_0.SR.R = 0xFCFE0000; /* Clear ALL status flags by writing 1 to them */
return u8DataReadBack;
#endif
uint8_t receive_data[4] = {0x0};
uint8_t send_buff[4] = {u8Data, 0X00, 0x00, 0x00};
uint8_t i = 0;
send_buff[0] = u8Data;
for(i = 0; i < 3; i++)
{
send_buff[3 - i] = (uint8_t)((0x08010000 & (0x0000FF << (8 * i))) >> (8 * i));
}
LPSPI_DRV_MasterTransferBlocking(LPSPICOM1, send_buff, receive_data, 4, 100UL);
return receive_data[0];
}

Re: TJK1145 module read device number error

jiri_kral — Wed, 13 Mar 2019 08:28:11 GMT

Hi,

what is your EVB? It seems that you are using SDK, in this case there is no reason to use registers directly.

Jiri

topic TJK1145 module read device number error in S32 Design Studio

TJK1145 module read device number error

Re: TJK1145 module read device number error