TDA4VM: How to set the GPIO level to high in vision_apps

JaeWook Kim

Intellectual 370 points

Part Number: TDA4VM

Dear TI,

I would like to set the "PIN_PRG1_PRU0_GPO6(AD22)" level to high.

"PIN_PRG1_PRU0_GPO6(AD22)" will be used for Camera PDB pin in custom board.

So I changed the "vision_apps/utils/misc/src/app_pinmux.c" as below:

diff --git a/vision_apps/utils/misc/src/app_pinmux.c b/vision_apps/utils/misc/src/app_pinmux.c
index 94c723c..65ba783 100755
--- a/vision_apps/utils/misc/src/app_pinmux.c
+++ b/vision_apps/utils/misc/src/app_pinmux.c
@@ -238,6 +238,13 @@ static pinmuxPerCfg_t gVout0PinCfg[] =
((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
},

+
+ /* MyVOUT1 -> J7_CAM_PDB1 -> AD22 */
+ {
+ PIN_PRG1_PRU0_GPO6, PIN_MODE(7) | \
+ ((PIN_PULL_DISABLE) & (~PIN_PULL_DIRECTION & ~PIN_INPUT_ENABLE))
+ },
+
{PINMUX_END}
};

But the "PIN_PRG1_PRU0_GPO6(AD22)" level is low still.

Could you let me know how to set the default gpio level to high in vision_apps?

Best Regards,

Jaewook

over 4 years ago

0 Brijesh Jadav over 4 years ago

TI__Guru**** 476605 points

Hi Jaewook Kim,

In addition to setting up output pin as GPIO in the pinmux register, you would also require to configure GPIO module to drive high on this pin. So could you please also configure appropriate GPIO pin in GPIO module?

Regards,

Brijesh

0 JaeWook Kim over 4 years ago in reply to Brijesh Jadav

Intellectual 370 points

Hi Brijesh,

Do you mean that GPIO module is "pdk/packages/ti/drv/gpio"?

Is there is any sample source for control GPIO?

Best Regard,

Jaewook.

0 JaeWook Kim over 4 years ago in reply to JaeWook Kim

Intellectual 370 points

Hi Brijesh,

Actually I tried to make a sample code in "utils/misc/src/app_pinmux.c"as below.

But I can't understood how to match between "PRG1_PRU0_GPO6(AD22)" and PORT_NUM AND PIN_NUM.

It is difficult for me. Please help this.

#define GPIO_PDB_PIN_NUM 6

#define GPIO_PDB_PORT_NUM 0

/* GPIO Driver board specific pin configuration structure */

GPIO_PinConfig gpioPinConfigs[] =

{

/* Output pin */

GPIO_DEVICE_CONFIG(GPIO_PDB_PORT_NUM, GPIO_PDB_PIN_NUM) |

GPIO_CFG_OUTPUT

};

/* GPIO Driver call back functions */

GPIO_CallbackFxn gpioCallbackFunctions[] =

{

NULL,

NULL

};

/* GPIO Driver configuration structure */

GPIO_v0_Config GPIO_v0_config =

{

gpioPinConfigs,

gpioCallbackFunctions,

sizeof(gpioPinConfigs) / sizeof(GPIO_PinConfig),

sizeof(gpioCallbackFunctions) / sizeof(GPIO_CallbackFxn),

0x20U

};

int appSetGpio(void)

{

int ret;

GPIO_v0_HwAttrs gpioCfg;

ret = GPIO_socGetInitCfg(GPIO_PDB_PORT_NUM, &gpioCfg);

gpioCfg.baseAddr = CSL_GPIO0_BASE;

ret = GPIO_socSetInitCfg(GPIO_PDB_PORT_NUM, &gpioCfg);

GPIO_init();

/* Making Write protect line low to enable write access */

GPIO_write(GPIO_PDB_PORT_NUM, 1);

return ret;

}

Best Regards,

Jaewook

0 Brijesh Jadav over 4 years ago in reply to JaeWook Kim

TI__Guru**** 476605 points

Hello Jaewook,

can you please refer to pinmux to figure out which gpio pin is output on this PRG1_PRU0_GPO6 output pin?

Regards,

Brijesh

0 Brijesh Jadav over 4 years ago in reply to Brijesh Jadav

TI__Guru**** 476605 points

I think it is GPIO0_7, please confirm if this is what you want to set to high.

Rgds,

Brijesh

0 JaeWook Kim over 4 years ago in reply to Brijesh Jadav

Intellectual 370 points

Hi Brijesh,

I want to set the GPIO0_7 to high.

Best Regards,

Jaewook

0 Brijesh Jadav over 4 years ago in reply to JaeWook Kim

TI__Guru**** 476605 points

Hi Jaewook Kim,

You would just require to write below three. can you try with it? This assumes pinmux is setup correctly.

/* Set direction to output */
*(unsigned int *)0x00600010u &= ~(1u << 7u);
/* Set output data */
*(unsigned int *)0x00600014u |= (1u << 7u);
/* Set output data */
*(unsigned int *)0x00600018u |= (1u << 7u);

Regards,

Brijesh

0 JaeWook Kim over 4 years ago in reply to Brijesh Jadav

Intellectual 370 points

Hi Brijesh,

Yes. GPIO0_7 level is changed to high after apply your guide.

Best Regards,

Jaewook

0 Brijesh Jadav over 4 years ago in reply to JaeWook Kim

TI__Guru**** 476605 points

Hi Jaewook Kim,

Glad to know it is working, please close this thread.

Regards,

Brijesh

0 JaeWook Kim over 4 years ago in reply to Brijesh Jadav

Intellectual 370 points

Hi Brijesh,

Thank you!

But I'm can't understand your guide. If I need to change the other pins, I can't control pins.

It seems you directly write data to physical address.

Could you let me know how can I find the address information?

Best Regards,

Jaewook

0 Brijesh Jadav over 4 years ago in reply to JaeWook Kim

TI__Guru**** 476605 points

Hi Jaewook,

0x00600000 is base address of the GPIO0 modules and we are setting value on pin7, which is nothing but GPIO0_7.

Please refer to TRM for information on this module.

Regards,

Brijesh

0 JaeWook Kim over 4 years ago in reply to Brijesh Jadav

Intellectual 370 points

Hi Brijesh,

Thank you!

I will close this thread.

Best Regards,

Jaewook

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TDA4VM: How to set the GPIO level to high in vision_apps