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samples: boards: nordic: system_off: Add comparator wakeup

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Extend sytem_off sample to use analog comparator as wake up source.

Signed-off-by: Bartlomiej Buczek <bartlomiej.buczek@nordicsemi.no>
This commit is contained in:
Bartlomiej Buczek 2024-12-03 20:39:16 +01:00 committed by Benjamin Cabé
parent 4cd33baf06
commit ae05388943
4 changed files with 85 additions and 3 deletions
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13
samples/boards/nordic/system_off/Kconfig
View file

@ -21,9 +21,20 @@ config APP_USE_RETAINED_MEM
endchoice
config GPIO_WAKEUP_ENABLE
bool "Use button to wake up device from system off"
default y
help
Enable system off wakeup from pressing sw0 button.
config GRTC_WAKEUP_ENABLE
bool "Use GRTC to wake up device from system off"
help
Switch wake up source from pressing sw0 button to GRTC
Enable system off wakeup from GRTC.
config LPCOMP_WAKEUP_ENABLE
bool "Use COMP to wake up device from system off"
help
Enable system off wakeup from analog comparator.
source "Kconfig.zephyr"

6
samples/boards/nordic/system_off/boards/nrf54l15dk_nrf54l15_cpuapp_comparator.overlay Normal file
View file

@ -0,0 +1,6 @@
&comp {
compatible = "nordic,nrf-lpcomp";
psel = "AIN4";
refsel = "VDD_4_8";
status = "okay";
};

54
samples/boards/nordic/system_off/sample.yaml
View file

@ -67,6 +67,7 @@ tests:
- nrf54l20pdk/nrf54l20/cpuapp
extra_configs:
- CONFIG_GRTC_WAKEUP_ENABLE=y
- CONFIG_GPIO_WAKEUP_ENABLE=n
harness: console
harness_config:
type: multi_line
@ -89,6 +90,7 @@ tests:
extra_configs:
- CONFIG_APP_USE_RETAINED_MEM=y
- CONFIG_GRTC_WAKEUP_ENABLE=y
- CONFIG_GPIO_WAKEUP_ENABLE=n
- CONFIG_RETAINED_MEM=y
harness: console
harness_config:
@ -107,3 +109,55 @@ tests:
- "Off count: 1"
- "Active Ticks:"
- "Entering system off; wait 2 seconds to restart"
sample.boards.nrf.system_off.lpcomp_wakeup:
extra_args: DTC_OVERLAY_FILE="boards/nrf54l15dk_nrf54l15_cpuapp_comparator.overlay"
platform_allow:
- nrf54l15dk/nrf54l15/cpuapp
extra_configs:
- CONFIG_LPCOMP_WAKEUP_ENABLE=y
- CONFIG_GPIO_WAKEUP_ENABLE=n
- CONFIG_COMPARATOR=y
harness: console
harness_config:
type: multi_line
ordered: true
regex:
- "system off demo"
- "Retained data not supported"
- "Entering system off; change signal level at comparator input to restart"
- "system off demo"
- "Retained data not supported"
- "Entering system off; change signal level at comparator input to restart"
- "system off demo"
- "Retained data not supported"
- "Entering system off; change signal level at comparator input to restart"
sample.boards.nrf.system_off.retained_mem.lpcomp_wakeup:
extra_args:
- "DTC_OVERLAY_FILE=
boards/nrf54l15dk_nrf54l15_cpuapp_comparator.overlay;
boards/nrf54l15dk_nrf54l15_cpuapp_retained_mem.overlay"
platform_allow:
- nrf54l15dk/nrf54l15/cpuapp
extra_configs:
- CONFIG_APP_USE_RETAINED_MEM=y
- CONFIG_GPIO_WAKEUP_ENABLE=n
- CONFIG_LPCOMP_WAKEUP_ENABLE=y
- CONFIG_RETAINED_MEM=y
- CONFIG_COMPARATOR=y
harness: console
harness_config:
type: multi_line
ordered: true
regex:
- "system off demo"
- "Retained data: INVALID"
- "Boot count: 1"
- "Off count: 0"
- "Active Ticks:"
- "Entering system off; change signal level at comparator input to restart"
- "system off demo"
- "Retained data: valid"
- "Boot count: 2"
- "Off count: 1"
- "Active Ticks:"
- "Entering system off; change signal level at comparator input to restart"

15
samples/boards/nordic/system_off/src/main.c
View file

@ -11,6 +11,7 @@
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/comparator.h>
#include <zephyr/kernel.h>
#include <zephyr/pm/device.h>
#include <zephyr/sys/poweroff.h>
@ -19,9 +20,13 @@
#if defined(CONFIG_GRTC_WAKEUP_ENABLE)
#include <zephyr/drivers/timer/nrf_grtc_timer.h>
#define DEEP_SLEEP_TIME_S 2
#else
#endif
#if defined(CONFIG_GPIO_WAKEUP_ENABLE)
static const struct gpio_dt_spec sw0 = GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios);
#endif
#if defined(CONFIG_LPCOMP_WAKEUP_ENABLE)
static const struct device *comp_dev = DEVICE_DT_GET(DT_NODELABEL(comp));
#endif
int main(void)
{
@ -58,7 +63,8 @@ int main(void)
} else {
printk("Entering system off; wait %u seconds to restart\n", DEEP_SLEEP_TIME_S);
}
#else
#endif
#if defined(CONFIG_GPIO_WAKEUP_ENABLE)
/* configure sw0 as input, interrupt as level active to allow wake-up */
rc = gpio_pin_configure_dt(&sw0, GPIO_INPUT);
if (rc < 0) {
@ -74,6 +80,11 @@ int main(void)
printf("Entering system off; press sw0 to restart\n");
#endif
#if defined(CONFIG_LPCOMP_WAKEUP_ENABLE)
comparator_set_trigger(comp_dev, COMPARATOR_TRIGGER_BOTH_EDGES);
comparator_trigger_is_pending(comp_dev);
printf("Entering system off; change signal level at comparator input to restart\n");
#endif
rc = pm_device_action_run(cons, PM_DEVICE_ACTION_SUSPEND);
if (rc < 0) {