P1.04 Configuration on nrf5340

[WesC]

I am using the nrf5340PDK and i am trying to have P1.04 trigger an interrupt on a high to low transition.

attached is my overlay file and my main.c to initialize the GPIO.

if i set the pin in the overlay to (almost) any port0 pin this works.  but if i set the GPIO to 36 (P1.04) it does not work.

what am i missing?

/ {
	
	buttons {
		compatible = "gpio-keys";
		MBR_DETECT: mbr_detect {
			gpios = <&gpio0 0x24 (GPIO_PULL_UP|GPIO_ACTIVE_LOW)>;
			label = "MBR_DETECT";
		};
	};
};

#define   MBR_PORT  DT_GPIO_LABEL(DT_NODELABEL(mbr_detect), gpios)
#define   MBR_PIN   DT_GPIO_PIN(DT_NODELABEL(mbr_detect),   gpios)
#define   MBR_FLAGS DT_GPIO_FLAGS(DT_NODELABEL(mbr_detect), gpios)
 .
 .
 .
 .
 void main(void)
{
	const struct device *button;
	const struct device *led;
	int ret;
 
        button = device_get_binding(MBR_PORT);
	if (button == NULL) {
		printk("Error: didn't find %s device\n", MBR_PORT);
		return;
	}

	ret = gpio_pin_configure(button, MBR_PIN,(GPIO_INPUT |MBR_FLAGS));
	if (ret != 0) {
		printk("Error %d: failed to configure %s pin %d\n",
		       ret, MBR_PORT, MBR_PIN);
		return;
	}

	ret = gpio_pin_interrupt_configure(button,
					   MBR_PIN,
					   GPIO_INT_EDGE_FALLING);
	if (ret != 0) {
		printk("Error %d: failed to configure interrupt on %s pin %d\n",
			ret, MBR_PORT, MBR_PIN);
		return;
	}

	gpio_init_callback(&button_cb_data, button_pressed, BIT(MBR_PIN));
	gpio_add_callback(button, &button_cb_data);

[Simonr]

Hi

This is because the NRF_P1 (Port 1) on the nRF5340 is not available in non-secure mode by default, so you'll only be able to use the port0 pins. You can however, edit SPM in order to manually set which pins on what ports are available in non-secure mode. You can also build the application in secure mode in order to "unlock" both ports.

Best regards,

Simon

[WesC]

without editing the SPM, how can I get Port 1 in the NS domain.

is there a CONFIG_SPM_NRF_P1_NS=y that can be set in the Proj.conf file?

[WesC]

i Have tried to edit the following files to get P1 in the NS domain.

i changed nrf/subsys/spm/kconfig

config SPM_NRF_P1_NS
	bool "GPIO P1 is Non-Secure"
	default y
	help 
		WRC added this to place Port 1 in Non Secure Domain

I changed the SPM.c

#ifdef NRF_P1
		PERIPH("NRF_P1", NRF_P1, CONFIG_SPM_NRF_P1_NS),
#endif

if (IS_ENABLED(CONFIG_SPM_NRF_P1_NS)) {
		/* Configure GPIO port 1 pins to be Non-Secure */
		NRF_SPU->GPIOPORT[1].PERM = 0;
	}

I added this line to the prj.conf

CONFIG_IS_SPM=y

and in my .overlay file i have this

/ {
	
	buttons {
		compatible = "gpio-keys";
		MBR_DETECT: mbr_detect {
			gpios = <&gpio1 0x4 (GPIO_PULL_UP|GPIO_ACTIVE_LOW)>;
			label = "MBR_DETECT";
		};
	};
};

when itry and build in SES i get the following error

C:/Users/Wes/ncs/v1.4.0/zephyr/include/toolchain/gcc.h:62:36: error: static assertion failed: ""

if i need to edit the SPM to get the P1 to work, what have i missed or done incorrectly?

thanks

[WesC]

I got it working.  I needed to remove the 

CONFIG_IS_SPM=y from the prj.conf file.

it works know

thanks i will close