SPI on MPC5744P Sending Problem

nimenhao — Tue, 26 Jun 2018 01:30:39 GMT

Hi everyone！

I use MPC5744P connecting allegro A4962 through SPI. And I use S32 DS 0.90 SDK. According to the example of mpc5746g,I use the functions

DSPI_MasterInit(INST_DSPI1, &dspi1State, &dspi1_MasterInitConfig0);

DSPI_MasterSetDelay(INST_DSPI1, 1, 1, 1);

to Initlize the spi module and use

DSPI_MasterTransferBlocking(INST_DSPI2,master_send, master_receive,
NUMBER_OF_FRAMES, TIMEOUT);

to transfer data. The data is

#define BUFFER_SIZE 1U
#define TIMEOUT 10000U
#define NUMBER_OF_FRAMES 2U

uint16_t master_send[BUFFER_SIZE] = {0x82D6};
uint16_t master_receive[BUFFER_SIZE];

I can use oscilloscope to capture the waveform of sending，and it's the same as I set. But how I check the slave，the allegro A4962，receving right or not？I didn't find the function in dspi module in SDK0.9.0.

I suppose the sending data being correct and the slave A4962 can be receving correctly.But when I connected the motor to the connector，the motor just shaked 1-2 seconds then stopped.

Here is the configuration of dspi module. There is no slave configuration，MPC5744P is just set as master.

So is there someone know where the wrong is？

Thanks a lot！

S32 SDKのトピックSPI on MPC5744P Sending Problem

SPI on MPC5744P Sending Problem