SPI connection on MC60

Technical Subjects Open Solution
1

I need help to use GPIO pin as a Chip Select pin in MC60(SPI protocol).

2

Hi dineshkumar.15mc
If you want use soft SPI in MC60,you could refer to the following method and any GPIO pin could be used.
*======================

  • Example:
    *======================

  • you could use this api like this for H/W SPI:

  • Ql_SPI_Init( 1, //spi channel select.
    PINNAME_PCM_IN, //spi CLK pin, can not change to another pin.
    PINNAME_PCM_SYNC, //spi MISO pin, can not change to another pin.
    PINNAME_PCM_OUT, //spi MOSI pin, can not change to another pin.
    PINNAME_PCM_CLK, //spi CS pin, user can change this pin to annother pin.
    //if user chose another pin, user should init the pin and must maintain the level by self.
    1 //for H/W SPI.
    );

  • you could use this api like this for S/W SPI:

  • Ql_SPI_Init( 1, //spi channel select.
    PINNAME_PCM_IN, //spi CLK pin, user could those another pin.
    PINNAME_PCM_SYNC, //spi MISO pin, user could those another pin.
    PINNAME_PCM_OUT, //spi MOSI pin, user could those another pin.
    PINNAME_PCM_CLK, //Iglore it. User could chose another pin and init it, maintain the level by self.
    0 //for S/W SPI.
    );

3

I used same like what You said…but i didn’t get value…

4

Did you use an oscilloscope to see that there is no output at all?

5

Hi ,

I think you are asking how can you select different pin as CS than PCM_CLK which is provided in example_SPI .

you can use any other pin also while initializing the SPI, only thing which you need to take care is about handling the level at appropriate time .
You can initialize multiple channels with difference Chip select pins .

       		  //chnnlNo, 	    //pinClk,  //pinMiso,      	   //pinMosi,      	 //pinCs,      //spiType

ret = Ql_SPI_Init(USR_SPI_CHANNAL,PINNAME_PCM_IN,PINNAME_PCM_SYNC,PINNAME_PCM_OUT,PINNAME_PCM_CLK,spi_usr_type)

Thank you
Ratan