RTOS/AM5728: Sample code of sending interrupt by using GPIO pin

Hi,

 

Thank you very much for your kindness.

I really appreciate your help.

 

Our customer sent us additional question like below;

They also want to know how to send interrupt from external device to A15_0 by using GPIO pin.

 

Question:

Are there any sample code of sending interrupt from external device to A15_0 by using GPIO pin?

 

We would appreciate if you tell us the recommended way of sending interrupt from external device to A15_0 by using GPIO pin.

 

Best regards,

Matusan,

Each gpio pin can be configured to generate interrupts based on event type GPIO_CFG_IN_INT_XXX configuration. To generate interrupt, gpio pin has to be configured as input pin.

For example, you can refer to the same GPIO_LedBlink (Simple example demonstrating LED Toggling):

pdk_am57xx_1_0_13/packages/ti/drv/gpio/test/led_blink/src/am572x/GPIO_idkAM572x_board.c

/* Input pin with interrupt enabled */
GPIO_DEVICE_CONFIG(GPIO_GRN_LED_PORT_NUM_1P2, GPIO_GRN_LED_PIN_NUM_1P2) |
GPIO_CFG_IN_INT_RISING | GPIO_CFG_INPUT,

/* Input pin with interrupt enabled */
GPIO_DEVICE_CONFIG(GPIO_GRN_LED_PORT_NUM_1P3, GPIO_GRN_LED_PIN_NUM_1P3) |
GPIO_CFG_IN_INT_RISING | GPIO_CFG_INPUT,

You can also check below example:

processor_sdk_rtos_am57xx_5_02_00_10/demos/rtos_template_app/am572x/evmAM572X/A15/template_app/GPIO_evmAM572x_board.c

/* Input pin with interrupt enabled : AM57X_IDK_GRN_LED */
GPIO_DEVICE_CONFIG(GPIO_USER0_LED_PORT_NUM, GPIO_USER0_LED_PIN_NUM) |
GPIO_CFG_IN_INT_RISING | GPIO_CFG_INPUT,


Regards,
Pavel

Hi,

 

Thank you very much for your kindness.

I really appreciate your help.

 

They sent us additional questions.

They found interruption related description such as "Hwi_create" like below;

http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/sysbios/6_33_03_33/exports/bios_6_33_03_33/docs/cdoc/ti/sysbios/hal/Hwi.html

Hwi_create(Int intNum, Hwi_FuncPtr hwiFxn, const Hwi_Params *params, Error_Block *eb)

 

Question:

   - Do we have to use "Hwi_create" to send interrupt from GPIO to A15_0?

   - Could you tell us what does the "intNum" mean?

     - Is it ”IRQ_CROSSBAR Instance Number" in Table Table 17-2. MPU_INTC Default Interrupt Mapping in the below TRM?

       http://www.ti.com/lit/ug/spruhz6k/spruhz6k.pdf      

 

We would appreciate if you tell us how to use "Hwi_create" including sample code.

 

Best regards,

 

 

Hi,

Thank you very much for your kindness.
I really appreciate your help.
I will send the answer to the customer.

Best regards,