Problem of SPI which be use in bidirectional


#1

Hi~
I used 4 line SPI interface . I can respectively sucess use Dout and Din to send and receive data in different project. So it prove 4 lines SPI subscription success . If i want to use PC send one byte to 2686 , the Din of SPI will Receive data . After SPI Read Bus Received data , then i will use Dout of SPI to send data which 2686 get . But it cant work . Finially i saw oscilloscope , Din of SPI will get data . But why 2686 still use Din
of SPI to send data , not Dout of SPI ? Is it a bug of 2686 to use bidirectional SPI Interface?

Regards
Xander


#2

Is that a bug of WaveCom ?


#3

Hello Xander,

Did you set the “DataLinesConf” parameter in the SPI settings correctly to use two pins for Data IO?

Cheers,
tom


#4

Hi tom ~

I used ADL_BUS_SPI_DATA_UNIDIR . and i success used Din and Dout in different project . the problem is i cant use them at the same time

Cheers
Xander