topic SPI PT60 in 8-bit Microcontrollers

SPI PT60

eliezeroc — Wed, 27 Jan 2016 12:24:01 GMT

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.

like this my sign.

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;

}

Re: SPI PT60

Stano — Thu, 28 Jan 2016 12:43:01 GMT

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.

Re: SPI PT60

eliezeroc — Thu, 28 Jan 2016 18:35:36 GMT

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?

Re: SPI PT60

kef2 — Fri, 29 Jan 2016 08:38:42 GMT

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

Re: SPI PT60

Stano — Thu, 04 Feb 2016 08:16:56 GMT

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.