TMS320F28386D: TMS320F28386 SPI Setup?

Hyeon woo Park

Prodigy 20 points

Part Number: TMS320F28386D

Tool/software:

Hi Team

I am working on a project using the TMS320F28386D.

I am working on a project to communicate with MLX90363 to determine the position of the magnet.

However, I am having a problem with the SPI communication process.

As you know, the TMS320F28386D has four independent SPI modules (SPIA, SPIB, SPIC, and SPID).

So I set up the code as below, and SPIA and SPIC work fine.

SPIB and SPID do not work and no clocks are generated.

What is the difference between SPIA, SPIC and SPIB, SPID?

P.S. Ignore the comments, they're not cleaned up.

I think the hardware is fine.

This is because when I measure the GPIO directly with an oscilloscope, I get no clock(SPIB, SPID).

#include "SPIS.h"

#include "f28x_project.h"

#include "TIMERS.h"

void InitSpi(void)

{

SpiaRegs.SPIFFTX.all=SpibRegs.SPIFFTX.all=SpicRegs.SPIFFTX.all=SpidRegs.SPIFFTX.all=0xE040;

SpiaRegs.SPIFFRX.all=SpibRegs.SPIFFRX.all=SpicRegs.SPIFFRX.all=SpidRegs.SPIFFRX.all=0x2041;

SpiaRegs.SPIFFCT.all=SpibRegs.SPIFFCT.all=SpicRegs.SPIFFCT.all=SpidRegs.SPIFFCT.all=4;

SpiaRegs.SPICCR.all =SpibRegs.SPICCR.all =SpicRegs.SPICCR.all =SpidRegs.SPICCR.all=0x0007;

SpiaRegs.SPICTL.all =SpibRegs.SPICTL.all =SpicRegs.SPICTL.all =SpidRegs.SPICTL.all =0x0006;

SpiaRegs.SPIBRR.all =SpibRegs.SPIBRR.all =SpicRegs.SPIBRR.all = SpidRegs.SPIBRR.all = (10-1);

SpiaRegs.SPICCR.all =SpibRegs.SPICCR.all =SpicRegs.SPICCR.all =SpidRegs.SPICCR.all =0x0087;

SpiaRegs.SPIPRI.bit.FREE =SpibRegs.SPIPRI.bit.FREE=SpicRegs.SPIPRI.bit.FREE=SpidRegs.SPIPRI.bit.FREE= 1;

}

void InitSpiGpio(void)

{

EALLOW;

//------SPIA GPIO SETUP ---------//

GpioCtrlRegs.GPBPUD.bit.GPIO54 = 0; // SPIA MOSI

GpioCtrlRegs.GPBPUD.bit.GPIO55 = 0; // SPIA MISO

GpioCtrlRegs.GPBPUD.bit.GPIO56 = 0; // SPIA CLK

GpioCtrlRegs.GPAPUD.bit.GPIO0 = 0; // SPIA SS1

GpioCtrlRegs.GPAPUD.bit.GPIO1 = 0; // SPIA SS2

GpioCtrlRegs.GPBQSEL2.bit.GPIO54 = 3; // Asynch input (SPIA MOSI)

GpioCtrlRegs.GPBQSEL2.bit.GPIO55 = 3; // Asynch input (SPIA MISO)

GpioCtrlRegs.GPBQSEL2.bit.GPIO56 = 3; // Asynch input (SPIA CLK)

GpioCtrlRegs.GPAQSEL1.bit.GPIO0 = 3; // Asynch input (SPIA SS1)

GpioCtrlRegs.GPAQSEL1.bit.GPIO1 = 3; // Asynch input (SPIA SS2)

GpioCtrlRegs.GPBMUX2.bit.GPIO54 = 1; // Configure as SPIA MOSI

GpioCtrlRegs.GPBMUX2.bit.GPIO55 = 1; // Configure as SPIA MISO

GpioCtrlRegs.GPBMUX2.bit.GPIO56 = 1; // Configure as SPIA CLK

GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 0;

GpioCtrlRegs.GPAGMUX1.bit.GPIO0 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO0 = 1;

GpioDataRegs.GPASET.bit.GPIO0 = 1;

GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO1 = 1;

GpioDataRegs.GPASET.bit.GPIO1 = 1;

//------SPIA GPIO SETUP END ---------//

//------SPIB GPIO SETUP ---------//

GpioCtrlRegs.GPAPUD.bit.GPIO24 = 0; // SPIB MOSI

GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0; // SPIB MISO

GpioCtrlRegs.GPAPUD.bit.GPIO26 = 0; // SPIB CLK

GpioCtrlRegs.GPAPUD.bit.GPIO2 = 0; // SPIB SS1

GpioCtrlRegs.GPAPUD.bit.GPIO3 = 0; // SPIB SS2

GpioCtrlRegs.GPAQSEL2.bit.GPIO24 = 3; // Asynch input (SPIB MOSI)

GpioCtrlRegs.GPAQSEL2.bit.GPIO25 = 3; // Asynch input (SPIB MISO)

GpioCtrlRegs.GPAQSEL2.bit.GPIO26 = 3; // Asynch input (SPIB CLK)

GpioCtrlRegs.GPAQSEL1.bit.GPIO2 = 3; // Asynch input (SPIB SS1)

GpioCtrlRegs.GPAQSEL1.bit.GPIO3 = 3; // Asynch input (SPIB SS2)

GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 6; // Configure as SPIB MOSI

GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 6; // Configure as SPIB MISO

GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 6; // Configure as SPIB CLK

GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO2 = 1;

GpioDataRegs.GPASET.bit.GPIO2 = 1;

GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO3 = 1;

GpioDataRegs.GPASET.bit.GPIO3 = 1;

//------SPIB GPIO SETUP END ---------//

//------SPIC GPIO SETUP ---------//

GpioCtrlRegs.GPDPUD.bit.GPIO100 = 0; // SPIC MOSI

GpioCtrlRegs.GPDPUD.bit.GPIO101 = 0; // SPIC MISO

GpioCtrlRegs.GPDPUD.bit.GPIO102 = 0; // SPIC CLK

GpioCtrlRegs.GPAPUD.bit.GPIO4 = 0; // SPIC SS1

GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0; // SPIC SS2

GpioCtrlRegs.GPDQSEL1.bit.GPIO100 = 3; // Asynch input (SPIC MOSI)

GpioCtrlRegs.GPDQSEL1.bit.GPIO101 = 3; // Asynch input (SPIC MISO)

GpioCtrlRegs.GPDQSEL1.bit.GPIO102 = 3; // Asynch input (SPIC CLK)

GpioCtrlRegs.GPAQSEL1.bit.GPIO4 = 3; // Asynch input (SPIC SS1)

GpioCtrlRegs.GPAQSEL1.bit.GPIO5 = 3; // Asynch input (SPIC SS2)

GpioCtrlRegs.GPDGMUX1.bit.GPIO100 = 1;

GpioCtrlRegs.GPDGMUX1.bit.GPIO101 = 1;

GpioCtrlRegs.GPDGMUX1.bit.GPIO102 = 1;

GpioCtrlRegs.GPDMUX1.bit.GPIO100 = 6; // Configure as SPIC MOSI

GpioCtrlRegs.GPDMUX1.bit.GPIO101 = 6; // Configure as SPIC MISO

GpioCtrlRegs.GPDMUX1.bit.GPIO102 = 6; // Configure as SPIC CLK

GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 0;

GpioCtrlRegs.GPAGMUX1.bit.GPIO4 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO4 = 1;

GpioDataRegs.GPASET.bit.GPIO4 = 1;

GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 0;

GpioCtrlRegs.GPAGMUX1.bit.GPIO5 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO5 = 1;

GpioDataRegs.GPASET.bit.GPIO5 = 1;

//------SPIC GPIO SETUP END ---------//

//------SPID GPIO SETUP ---------//

GpioCtrlRegs.GPCPUD.bit.GPIO91 = 0; // SPIC MOSI

GpioCtrlRegs.GPCPUD.bit.GPIO92 = 0; // SPIC MISO

GpioCtrlRegs.GPCPUD.bit.GPIO93 = 0; // SPIC CLK

GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; // SPIC SS1

GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; // SPIC SS2

GpioCtrlRegs.GPCQSEL2.bit.GPIO91 = 3; // Asynch input (SPIC MOSI)

GpioCtrlRegs.GPCQSEL2.bit.GPIO92 = 3; // Asynch input (SPIC MISO)

GpioCtrlRegs.GPCQSEL2.bit.GPIO93 = 3; // Asynch input (SPIC CLK)

GpioCtrlRegs.GPAQSEL1.bit.GPIO6 = 3; // Asynch input (SPIC SS1)

GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 3; // Asynch input (SPIC SS2)

GpioCtrlRegs.GPCMUX2.bit.GPIO91 = 15; // Configure as SPIC MOSI

GpioCtrlRegs.GPCMUX2.bit.GPIO92 = 15; // Configure as SPIC MISO

GpioCtrlRegs.GPCMUX2.bit.GPIO93 = 15; // Configure as SPIC CLK

GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 0;

GpioCtrlRegs.GPAGMUX1.bit.GPIO6 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO6 = 1;

GpioDataRegs.GPASET.bit.GPIO6 = 1;

GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 0;

GpioCtrlRegs.GPAGMUX1.bit.GPIO7 = 0;

GpioCtrlRegs.GPADIR.bit.GPIO7 = 1;

GpioDataRegs.GPASET.bit.GPIO7 = 1;

//------SPIC GPIO SETUP END ---------//

EDIS;

}

char SPIA_TX_RX(char tx_data)

{

Uint16 i, spi_tx_data;

char rx_data;

while(SpiaRegs.SPIFFTX.bit.TXFFST != 0) { }

while(SpiaRegs.SPISTS.bit.BUFFULL_FLAG == 1) { }

i = SpiaRegs.SPIFFRX.bit.RXFFST;

while(i != 0)

{

rx_data = SpiaRegs.SPIRXBUF;

i--;

}

SpiaRegs.SPIFFRX.bit.RXFFINTCLR = 1;

spi_tx_data = tx_data;

spi_tx_data = spi_tx_data << 8;

SpiaRegs.SPITXBUF=spi_tx_data;

while(SpiaRegs.SPIFFRX.bit.RXFFINT !=1) { }

rx_data = SpiaRegs.SPIRXBUF;

return rx_data;

}

char SPIB_TX_RX(char tx_data)

{

Uint16 i, spi_tx_data;

char rx_data;

while(SpibRegs.SPIFFTX.bit.TXFFST != 0) { }

while(SpibRegs.SPISTS.bit.BUFFULL_FLAG == 1) { }

i = SpibRegs.SPIFFRX.bit.RXFFST;

while(i != 0)

{

rx_data = SpibRegs.SPIRXBUF;

i--;

}

SpibRegs.SPIFFRX.bit.RXFFINTCLR = 1;

spi_tx_data = tx_data;

spi_tx_data = spi_tx_data << 8;

SpibRegs.SPITXBUF=spi_tx_data;

while(SpibRegs.SPIFFRX.bit.RXFFINT !=1) { }

rx_data = SpibRegs.SPIRXBUF;

return rx_data;

}

char SPIC_TX_RX(char tx_data)

{

Uint16 i, spi_tx_data;

char rx_data;

while(SpicRegs.SPIFFTX.bit.TXFFST != 0) { }

while(SpicRegs.SPISTS.bit.BUFFULL_FLAG == 1) { }

i = SpicRegs.SPIFFRX.bit.RXFFST;

while(i != 0)

{

rx_data = SpicRegs.SPIRXBUF;

i--;

}

SpicRegs.SPIFFRX.bit.RXFFINTCLR = 1;

spi_tx_data = tx_data;

spi_tx_data = spi_tx_data << 8;

SpicRegs.SPITXBUF=spi_tx_data;

while(SpicRegs.SPIFFRX.bit.RXFFINT !=1) { }

rx_data = SpicRegs.SPIRXBUF;

return rx_data;

}

char SPID_TX_RX(char tx_data)

{

Uint16 i, spi_tx_data;

char rx_data;

while(SpidRegs.SPIFFTX.bit.TXFFST != 0) { }

while(SpidRegs.SPISTS.bit.BUFFULL_FLAG == 1) { }

i = SpidRegs.SPIFFRX.bit.RXFFST;

while(i != 0)

{

rx_data = SpidRegs.SPIRXBUF;

i--;

}

SpidRegs.SPIFFRX.bit.RXFFINTCLR = 1;

spi_tx_data = tx_data;

spi_tx_data = spi_tx_data << 8;

SpidRegs.SPITXBUF=spi_tx_data;

while(SpidRegs.SPIFFRX.bit.RXFFINT !=1) { }

rx_data = SpidRegs.SPIRXBUF;

return rx_data;

}

3 months ago

0 Hyeon woo Park 3 months ago

Prodigy 20 points

Resolved

The TMS320F2838X datasheet is missing the GPyGMUX settings.

Therefore, we verified the normal behavior after setting GPyGMUX.

GpioCtrlRegs.GPAGMUX2.bit.GPIO24=1;

GpioCtrlRegs.GPAGMUX2.bit.GPIO26=1;

GpioCtrlRegs.GPAGMUX2.bit.GPIO25=1;

GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 2; // Configure as SPIB MOSI

GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 2; // Configure as SPIB MISO

GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 2; // Configure as SPIB CLK

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TMS320F28386D: TMS320F28386 SPI Setup?