TDA4VM: How to implement GPIO interrupts on main domain?

Cherry Zhou

Part Number: TDA4VM

Hi team,

The customer has referenced the GPIO-related code in main_led_blink.c, but the GPIO interrupts still do not work successfully. The code is as follows:

//Configure GPIO0_99 (W23) as an interrupt 
typedef enum {
    ENUM_TEST_GPIO_INT_FUN_W23 = 0,
}GPIO_CTL;

GPIO_PinConfig gpioPinConfigs[] =
{
    GPIO_DEVICE_CONFIG(0, 99) | GPIO_CFG_IN_INT_BOTH_EDGES | GPIO_CFG_INPUT,
};

GPIO_CallbackFxn gpioCallbackFunctions[] =
{
    NULL,
};

GPIO_v0_Config GPIO_v0_config =
{
    gpioPinConfigs,
    gpioCallbackFunctions,
    sizeof(gpioPinConfigs) / sizeof(GPIO_PinConfig),
    sizeof(gpioCallbackFunctions) / sizeof(GPIO_CallbackFxn),
    0x8U
};

app_init()
{
	boardCfg = BOARD_INIT_PINMUX_CONFIG | BOARD_INIT_UART_STDIO | BOARD_INIT_MODULE_CLOCK;  
    Board_init(boardCfg);
	int pinNum = 99;
	int bankNum = pinNum/16；									//bankNum=99/16	Is this calculation correct? 
    GPIO_v0_HwAttrs gpio_cfg;
    GPIO_socGetInitCfg(bankNum, &gpio_cfg);    					//IDX uses the bankNum variable, is it correct? 
    gpio_cfg.baseAddr = CSL_GPIO6_BASE;    						//Value for CSL_GPIO6_base source bankNum=0 
	gpio_cfg.intCfg[pinNum].intNum = 256 + bankNum;				//256 referring to the values in other source code, don't know why this is set to 256? 
    gpio_cfg.intCfg[pinNum].intcMuxNum = INVALID_INTC_MUX_NUM;	//Refer to the main_led_blink.c configuration 
    gpio_cfg.intCfg[pinNum].intcMuxInEvent = 0;					//Refer to the main_led_blink.c configuration 
    gpio_cfg.intCfg[pinNum].intcMuxOutEvent = 0;				//Refer to the main_led_blink.c configuration 
	GPIO_socSetInitCfg(bankNum, &gpio_cfg);						//IDX uses the bankNum variable, is it correct? 
	GPIO_init();
    GPIO_setCallback(ENUM_TEST_GPIO_INT_FUN_W23, AppGpioCallbackFxn_W23);
    GPIO_enableInt(ENUM_TEST_GPIO_INT_FUN_W23);
}

Could you help check this case? Thanks.

Best Regards,

Cherry

over 3 years ago

0 Parth Nagpal over 3 years ago

TI__Mastermind 42135 points

Hi Cherry,

For which GPIO instance are you trying to configure the interrupt? I see, in the comment you want to configure GPIO0_99 but you are setting the base address for GPIO6 in gpio_cfg.baseAddr = CSL_GPIO6_BASE; .

Also, before we investigate the interrupt, can you try and toggle the intended GPIO pin and see if you are able to toggle it?

Regards,
Parth

0 qidong liu over 3 years ago in reply to Parth Nagpal

Intellectual 265 points

Hello,
I don't know how to configure gpio_cfg.baseAddr, there is no documentation on how gpio_cfg.baseAddr should be configured. I configured CSL_GPIO6_BASE because I think 99/16=6, so I configured CSL_GPIO6_BASE. How should gpio_cfg.baseAddr be configured?
In addition, if I configure GPIO0_99 as a normal GPIO output function, I can configure GPIO0_99 to output a high level or a low level.

Does TI have an introduction document about GPIO interrupts on TDA4 R5F? I didn't find any relevant documentation in TI's documentation.
Could you please provide an example of a GPIO interrupt that can be run on TDA4 MCU2_0? For example, take GPIO0_99 as an example.

0 Parth Nagpal over 3 years ago in reply to qidong liu

TI__Mastermind 42135 points

Hi Qidong,

We do not have any documentation currently.

qidong liu said:
. I configured CSL_GPIO6_BASE because I think 99/16=6, so I configured CSL_GPIO6_BASE.

This base address should be the GPIO instance's base address. So, in your case it should be CSL_GPIO0_BASE.

Please refer to the discussion in https://e2e.ti.com/support/processors-group/processors/f/processors-forum/882426/tda4vmxevm-how-to-build-gpio-driver-for-mcu2_0-main_r5_0_0 for reference

Regards,
Parth

0 qidong liu over 3 years ago in reply to Parth Nagpal

Intellectual 265 points

Hello, when I use the GPIO0_99 pin to configure the interrupt, I call the following code, GPIO_socConfigIntrPath always returns -1. Where is the configuration problem?

    GPIO_v0_HwAttrs gpio_cfg;   
    status = GPIO_socGetInitCfg(0, &gpio_cfg);
    printf("%s %s %d status = %d.\n", __FILE__, __func__, __LINE__ status);
    
    status = GPIO_socConfigIntrPath(GPIO_MAIN_DOMAIN_0, TEST_GPIO_INT_FUN_W23, &gpio_cfg, 1);
    printf("%s %s %d status = %d.\n", __FILE__, __func__, __LINE__ status);//there status=-1

    status = GPIO_socSetInitCfg(0, &gpio_cfg);
    printf("%s %s %d status = %d.\n", __FILE__, __func__, __LINE__ status);

0 Parth Nagpal over 3 years ago in reply to qidong liu

TI__Mastermind 42135 points

Hi,

What is the interrupt number you are using? Have you tried toggling the GPIO and see if you are able to toggle it?
Can you please share your complete code, also, please on which core are you running this test.

Regards,
Parth

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TDA4VM: How to implement GPIO interrupts on main domain?