CCS/AWR1843BOOST: SPIB ChipSelect[0/1/2] switching dosenot work

chunzhou

Part Number: AWR1843BOOST
Other Parts Discussed in Thread: DCA1000EVM

Tool/software: Code Composer Studio

I want to connect 3 devices to SPI_Bport and switch control with ChipSelect[0/1/2].
I tried SPI Read while switching ChipSelect CS0/CS1/CS2, but CS0 is always enabled. CS1 and CS2 doesnot work.

Steps
1. Enable SPIB pin settings
　refer : [Pin_Map] and [Pin_MuxSetting]
2. Set SPI parameters.
　refer : [Parameter_Setting]
3. Try to access CS0/CS1/CS2 with SPI_Read command
　a. SPI_Read with CS=0
　b. SPI_Read with CS=1
　c. SPI_Read with CS=2
　Repeat a>b>c.
　refer : [TestCode]
4. As a result of checking the waveform, CS0 is always enabled. Even if it accessed CS1/CS2.

Are there any problems with the procedure for test steps?

or Is there any other root cause?

----------------------------------------------------
Pin_Map
----------------------------------------------------

SPIB-CLK  : F14
SPIB-CS0  : H14
SPIB-CS1  : P13
SPIB-CS2  : J13
SPIB-MOSI : F13
SPIB-MISO : G14

----------------------------------------------------
Pinmux_Setting
----------------------------------------------------

//SPIBCLK 
Pinmux_Set_OverrideCtrl(SOC_XWR18XX_PINF14_PADAJ, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL);
Pinmux_Set_FuncSel(SOC_XWR18XX_PINF14_PADAJ, SOC_XWR18XX_PINF14_PADAJ_SPIB_CLK);
//SPIB CS0
Pinmux_Set_OverrideCtrl(SOC_XWR18XX_PINH14_PADAK, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL);
Pinmux_Set_FuncSel(SOC_XWR18XX_PINH14_PADAK, SOC_XWR18XX_PINH14_PADAK_SPIB_CSN);
//SPIB CS1
Pinmux_Set_OverrideCtrl(SOC_XWR18XX_PINP13_PADAA, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL);
Pinmux_Set_FuncSel(SOC_XWR18XX_PINP13_PADAA, SOC_XWR18XX_PINP13_PADAA_SPIB_CSN1);
//SPIB CS2
Pinmux_Set_OverrideCtrl(SOC_XWR18XX_PINJ13_PADAC, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL);
Pinmux_Set_FuncSel(SOC_XWR18XX_PINJ13_PADAC, SOC_XWR18XX_PINJ13_PADAC_SPIB_CSN2);
// SPIB MISO
Pinmux_Set_OverrideCtrl( SOC_XWR18XX_PING14_PADAI, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL );
Pinmux_Set_FuncSel( SOC_XWR18XX_PING14_PADAI, SOC_XWR18XX_PING14_PADAI_SPIB_MISO );
// SPIB MOSI
Pinmux_Set_OverrideCtrl( SOC_XWR18XX_PINF13_PADAH, PINMUX_OUTEN_RETAIN_HW_CTRL, PINMUX_INPEN_RETAIN_HW_CTRL );
Pinmux_Set_FuncSel( SOC_XWR18XX_PINF13_PADAH, SOC_XWR18XX_PINF13_PADAH_SPIB_MOSI );

----------------------------------------------------
Parameter_Setting
----------------------------------------------------

void spi_init(void)
{
	DMA_Params		DmaParams;
	SPI_Params		params;
	int32_t			errCode = 0;
	uint8_t 		inst = 1;

	DMA_Params_init( &DmaParams );
	gDmaHandle = DMA_open( 0, &DmaParams, &errCode );
	if( gDmaHandle == NULL )
	{
		System_printf( "Open DMA driver failed with error=%d\n", errCode );
		return;
	}

	SPI_init();
	
	SPI_Params_init( &params );
	params.frameFormat = SPI_POL0_PHA0;

	params.dmaEnable = 1;
	params.dmaHandle = gDmaHandle;
	params.eccEnable = 1;

	params.mode = SPI_MASTER;
	params.u.masterParams.bitRate = 1000000; (1MHz)
 
	memset((void *)&params.u.masterParams.slaveProf[0], 0, sizeof(params.u.masterParams.slaveProf));

	params.u.masterParams.numSlaves = 3;
	params.u.masterParams.slaveProf[0].chipSelect = 0;
	params.u.masterParams.slaveProf[0].ramBufLen = MIBSPI_RAM_MAX_ELEM/2;
	params.u.masterParams.slaveProf[0].dmaCfg.txDmaChanNum =0U;
	params.u.masterParams.slaveProf[0].dmaCfg.rxDmaChanNum =1U;
	params.u.masterParams.slaveProf[1].chipSelect = 1;
	params.u.masterParams.slaveProf[1].ramBufLen = MIBSPI_RAM_MAX_ELEM/4;
	params.u.masterParams.slaveProf[1].dmaCfg.txDmaChanNum =2U;
	params.u.masterParams.slaveProf[1].dmaCfg.rxDmaChanNum =3U;
	params.u.masterParams.slaveProf[2].chipSelect = 2;
	params.u.masterParams.slaveProf[2].ramBufLen = MIBSPI_RAM_MAX_ELEM/4;
	params.u.masterParams.slaveProf[2].dmaCfg.txDmaChanNum =4U;
	params.u.masterParams.slaveProf[2].dmaCfg.rxDmaChanNum =5U;

	Spihandle = SPI_open( inst, &params );
	
	if( Spihandle == NULL )
	{
		System_printf("Error: Unable to open the SPI Instance\n");
	}
}

----------------------------------------------------
TestCode :
----------------------------------------------------

int main()
{
...
SPI_Transaction transaction;

transaction.count = 2;
transaction.txBuf = outBuffer;
transaction.rxBuf = inBuffer;
transaction.slaveIndex = 0 or 1 or 2;

SPI_transfer( Spihandle, &transaction )
}

over 6 years ago

0 chunzhou over 6 years ago

Prodigy 200 points

I made a mistake in the post.
I remove this post and migrate to SensorsForum.
e2e.ti.com/.../790024

0 Raghunandan Kamath over 6 years ago in reply to chunzhou

TI__Mastermind 22155 points

Hello ,
The pinmux and other settings seem right.
Can you please check the below registers in the MIBSPIB when you send the slave 2 and slave 3?
"SPIDAT1 : CSNR" and "SPIBUF : LCSNR"

-Raghu

0 chunzhou over 6 years ago in reply to Raghunandan Kamath

Prodigy 200 points

Hello,

I dumped Register.please check attached logs.

case1 : when read SPIB slave2(CS1)

case2 : when read SPIB slave3(cs2)

0 Raghunandan Kamath over 6 years ago in reply to chunzhou

TI__Mastermind 22155 points

Hi,
Sorry for my delayed reply.

The configurations in the code seem to be fine. But the register CSNR do not show the right value based on your slave select.

Can you make sure some of the pinmux are not being overwritten in you code?

-Raghu

0 chunzhou over 6 years ago in reply to Raghunandan Kamath

Prodigy 200 points

Hi,

I checked again, but pinmux has not been overwritten.
I have not set up MIBSPIB at all, is this not affecting anything?

0 Raghunandan Kamath over 6 years ago in reply to chunzhou

TI__Mastermind 22155 points

Hi ,

I am sorry I do not understand what you mean by "not setup MIBSPIB" ?

Are you not initializing the MIBSPIB in your code?

-Raghu

0 Raghunandan Kamath over 6 years ago in reply to Raghunandan Kamath

TI__Mastermind 22155 points

Hi ,
Are you using your own hardware or the AWR1843BOOST?
If you are using the AWR1843BOOST then you will need some ECO on the board for the SPIB to be functional.
Please refer to the schematic of AWR1843BOOST and check the pins for GPIO_0, GPIO_1, MSS_LOGGER for the chip selects and clocks.

-Raghu

0 chunzhou over 6 years ago in reply to Raghunandan Kamath

Prodigy 200 points

Hi,

I am using [void spi_init (void)] above source code to use the SPI driver.

but this code does not include MIBSPI initialization.

----
I mean MIBSPI as :

ti\mmwave_sdk_03_01_01_02\packages\ti\drivers\spi\src\mibspi_dma.c
- MIBSPI_init().
- MIBSPI_open().
- etc
----
Your test code does not include the above MIBSPI init.

Is the initialization sequence correct in [void spi_init (void)]?

0 chunzhou over 6 years ago in reply to chunzhou

Prodigy 200 points

Hi,

>Are you using your own hardware or the AWR1843BOOST?
I using AWR1843BOOST Rev-A board.

>If you are using the AWR1843BOOST then you will need some ECO on the board for the SPIB to be functional.
What is "some ECO board"?
For example, "DCA1000EVM"?

>Please refer to the schematic of AWR1843BOOST and check the pins for GPIO_0, GPIO_1, MSS_LOGGER for the chip selects and clocks.
Hmm, I referd the schematicn and I am checking the waveform on the chip resistor

SPIB-CLK : F14 : AR_MSS_LOGGER >> R136
SPIB-CS0 : H14 : AR_BSS_LOGGER >> R135
SPIB-CS1 : P13 : AR_HOSTINTR1 >> R64
SPIB-CS2 : J13 : AR_GPIO_1 >> R72

Please check it.

0 Raghunandan Kamath over 6 years ago in reply to chunzhou

TI__Mastermind 22155 points

Hi,
I would suggest to populate 0 ohm resistors on R164, R9 and R26.

The Probe:
SPIB-CLK : F14 : AR_MSS_LOGGER >> R26
SPIB-CS0 : H14 : AR_BSS_LOGGER >> R31
SPIB-CS1 : P13 : AR_HOSTINTR1 >> R64
SPIB-CS2 : J13 : AR_GPIO_1 >> R9

BR,
Raghu

0 chunzhou over 6 years ago in reply to Raghunandan Kamath

Prodigy 200 points

Hi,
The J5 and J6 connectors are not connected to anything (Open), so I do not understand what it means to add 0 Ohms resistors.

0 chunzhou over 6 years ago in reply to chunzhou

Prodigy 200 points

Hi,
Any update?
Best Regards,
-chunzhou

0 Raghunandan Kamath over 6 years ago in reply to chunzhou

TI__Mastermind 22155 points

Hi Chunzhou,
Addding 0 Ohm means solder a 0 ohm resistor.

-Raghu

0 chunzhou over 6 years ago in reply to Raghunandan Kamath

Prodigy 200 points

Hi Raghu,

I found that CS[2] worked fine after I changed some SPI parameters and did some tests.

■ Here is my test procedure:

1. Change the ramBufLen of CS[2] to MIBSPI_RAM_MAX_ELEM(64).

ramBufLef of CS[0] and CS[1] are set to 0.

params.u.masterParams.numSlaves = 3;
params.u.masterParams.slaveProf[0].chipSelect = 0U;
params.u.masterParams.slaveProf[0].ramBufLen = 0;
params.u.masterParams.slaveProf[0].dmaCfg.txDmaChanNum =0U;
params.u.masterParams.slaveProf[0].dmaCfg.rxDmaChanNum =1U;
params.u.masterParams.slaveProf[1].chipSelect = 1U;
params.u.masterParams.slaveProf[1].ramBufLen = 0;
params.u.masterParams.slaveProf[1].dmaCfg.txDmaChanNum =2U;
params.u.masterParams.slaveProf[1].dmaCfg.rxDmaChanNum =3U;
params.u.masterParams.slaveProf[2].chipSelect = 2U;
params.u.masterParams.slaveProf[2].ramBufLen = MIBSPI_RAM_MAX_ELEM;
params.u.masterParams.slaveProf[2].dmaCfg.txDmaChanNum =4U;
params.u.masterParams.slaveProf[2].dmaCfg.rxDmaChanNum =5U;

2. Write SPI on CS[2]

int main()
{
	...
	SPI_Transaction transaction;

	transaction.count = 2;
	transaction.txBuf = outBuffer;
	transaction.rxBuf = inBuffer;
	transaction.slaveIndex = 2;

	SPI_transfer( Spihandle, &transaction )
}

■ Here is the waveform

CS[2] is now activated.

■ MIBSPIB register values

I have a question now.

Originally I set the following values on CS[0], CS[1] and CS[2].

params.u.masterParams.slaveProf[0].ramBufLen = MIBSPI_RAM_MAX_ELEM/4;
params.u.masterParams.slaveProf[1].ramBufLen = MIBSPI_RAM_MAX_ELEM/4;
params.u.masterParams.slaveProf[2].ramBufLen = MIBSPI_RAM_MAX_ELEM/2;

In this setting, CS[0] is always activated although I tried to use CS[1] or CS[2].

Is this correct behavior on SPI driver?

Best Regards,

-chunzhou

0 Raghunandan Kamath over 6 years ago in reply to chunzhou

TI__Mastermind 22155 points

Hi Chunzhou,

We are checking on this issue.Attached is the driver modification to address some of the multiple slave support. Could you please check and let us know if this resolves your current issue?mibspi_dma.c

0 chunzhou over 6 years ago in reply to Raghunandan Kamath

Prodigy 200 points

Hi Raghu,

Thanks for the new driver and it works fine so far.
I will check deeply later.

Best Regards,
-chunzhou

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CCS/AWR1843BOOST: SPIB ChipSelect[0/1/2] switching dosenot work