SPI PT60

cancel
Showing results for 
Search instead for 
Did you mean: 

SPI PT60

Jump to solution
368 Views
eliezeroc
Contributor III

Hello guys, I'm having problems with the CPI EN 60.

Below my boot code, reading and writing.

Also follows signal aspect I need to generate.

Thanks,

 

how to get my signal.

132984_132984.PNGhow to get my signal.PNG

 

like this my sign.

132985_132985.PNGmy signal.PNG

 

 

void SPI0_Init( void )

{

  volatile char dummy;

  SYS_SOPT1_SPI0PS  = 1;       

  SPI0_C1_MSTR = 1;        

  SPI0_C1_CPHA = 0;      

  SPI0_C2_MODFEN = 1;

  SPI0_C1_SSOE = 1;

  SPI0_BR = 0x73;

  dummy = SPI0_D;

  SPI0_C1_SPE  = 1;        

}

 

void Wr(unsigned char Address, unsigned char value)

{  

   SPI0_S |= SPI0_S_SPTEF_MASK;  

   SPI0_D = ( (Address<<1)&0x7E);

   while( !SPI0_S_SPRF );

  

   SPI0_S |= SPI0_S_SPTEF_MASK;  

   SPI0_D = value;  

   while( !SPI0_S_SPRF ); 

}

 

 

unsigned char Rd(unsigned char Address) 

{  

   unsigned char value,limpa;         

   SPI0_S |= SPI0_S_SPTEF_MASK;  

   SPI0_D = ((Address<<1)&0x7E)| 0x80;     

   limpa=SPI0_D;

   while(!SPI0_S_SPRF);

   value = SPI0_D;   

   return value;

}

Labels (1)
Tags (2)
1 Solution
205 Views
Stano
NXP Employee
NXP Employee

Hello Eliezer,

The 16-bit SPI module is SPI1. So you need to use SPI1_C2_SPIMODE as defined in the header file:

#define SPI1_C2_SPIMODE                 _SPI1_C2.Bits.SPIMODE.

The disable the SSOE pin is not right way to receive 16-bit data. The SPI1 module controls properly the SS pin also.

Best Regards,

Stano.

View solution in original post

0 Kudos
4 Replies
205 Views
Stano
NXP Employee
NXP Employee

Hello Eliezer,

your code is OK, but it is set for 8-bit mode os SPI module. If I understand well, you want to use 16-bit mode like on picture_1, instead of 8-bit mode on picture_2.

You need set SPIMODE bit in the SPIx_C2 register to use 16-bit mode. Then the 16-bit value will be send/received from/to SPI module.

Best Regards,

Stano.

205 Views
eliezeroc
Contributor III

Stano Hello, thank you for your attention.

I'm using the SPI0, and when I set the SPI0_C2_SPIMODE = 1, the error occurs: C1815 SPI0_C2_SPIMODE not declared (or typename).

It is only SPI1 can be configured to 16b?

0 Kudos
205 Views
kef2
Senior Contributor IV

Yes, according to S08PT block diagram, SPI0 is 8-bit module and SPI1 is 16-bit module.

You can disable SPI0_C1_SSOE and toggle chip select pin from software and do two 8bit transfers (address + data) both when writing to device and reading from device.

Regards,

Edward

206 Views
Stano
NXP Employee
NXP Employee

Hello Eliezer,

The 16-bit SPI module is SPI1. So you need to use SPI1_C2_SPIMODE as defined in the header file:

#define SPI1_C2_SPIMODE                 _SPI1_C2.Bits.SPIMODE.

The disable the SSOE pin is not right way to receive 16-bit data. The SPI1 module controls properly the SS pin also.

Best Regards,

Stano.

0 Kudos