| /* |
| * Copyright (c) 2019 Nordic Semiconductor ASA |
| * Copyright (c) 2020 Linaro Ltd. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <stdio.h> |
| #include <zephyr.h> |
| #include <init.h> |
| #include <device.h> |
| #include <drivers/gpio.h> |
| #include <power/power.h> |
| |
| #include <driverlib/ioc.h> |
| |
| |
| #define PORT DT_GPIO_LABEL(DT_ALIAS(sw0), gpios) |
| #define PIN DT_GPIO_PIN(DT_ALIAS(sw0), gpios) |
| #define PULL_UP DT_GPIO_FLAGS(DT_ALIAS(sw0), gpios) |
| |
| #define BUSY_WAIT_S 5U |
| #define SLEEP_US 2000U |
| #define SLEEP_S 3U |
| |
| extern void CC1352R1_LAUNCHXL_shutDownExtFlash(void); |
| |
| void main(void) |
| { |
| u32_t config, status; |
| struct device *gpiob; |
| |
| printk("\n%s system off demo\n", CONFIG_BOARD); |
| |
| /* Shut off external flash to save power */ |
| CC1352R1_LAUNCHXL_shutDownExtFlash(); |
| |
| /* Configure to generate PORT event (wakeup) on button 1 press. */ |
| gpiob = device_get_binding(PORT); |
| if (!gpiob) { |
| printk("error\n"); |
| return; |
| } |
| |
| gpio_pin_configure(gpiob, PIN, GPIO_INPUT | PULL_UP); |
| |
| /* Set wakeup bits for button gpio */ |
| config = IOCPortConfigureGet(PIN); |
| config |= IOC_WAKE_ON_LOW; |
| IOCPortConfigureSet(PIN, IOC_PORT_GPIO, config); |
| |
| printk("Busy-wait %u s\n", BUSY_WAIT_S); |
| k_busy_wait(BUSY_WAIT_S * USEC_PER_SEC); |
| |
| printk("Sleep %u us (IDLE)\n", SLEEP_US); |
| k_usleep(SLEEP_US); |
| |
| printk("Sleep %u s (STANDBY)\n", SLEEP_S); |
| k_sleep(K_SECONDS(SLEEP_S)); |
| |
| printk("Entering system off (SHUTDOWN); press BUTTON1 to restart\n"); |
| |
| /* Clear GPIO interrupt */ |
| status = GPIO_getEventMultiDio(GPIO_DIO_ALL_MASK); |
| GPIO_clearEventMultiDio(status); |
| |
| /* Above we disabled entry to deep sleep based on duration of |
| * controlled delay. Here we need to override that, then |
| * force a sleep so that the deep sleep takes effect. |
| */ |
| sys_pm_force_power_state(SYS_POWER_STATE_DEEP_SLEEP_1); |
| k_sleep(K_MSEC(1)); |
| |
| printk("ERROR: System off failed\n"); |
| while (true) { |
| /* spin to avoid fall-off behavior */ |
| } |
| } |