1 /* 2 * Copyright (c) 2022 Linaro Limited 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #include <zephyr/kernel.h> 8 #include <zephyr/device.h> 9 #include <zephyr/pm/device.h> 10 #include <zephyr/devicetree.h> 11 #include <zephyr/sys/printk.h> 12 #include <zephyr/sys/__assert.h> 13 main(void)14int main(void) 15 { 16 const struct device *const dev = 17 DEVICE_DT_GET(DT_CHOSEN(zephyr_console)); 18 19 if (!device_is_ready(dev)) { 20 printk("Console device not ready"); 21 return 0; 22 } 23 24 #if CONFIG_PM_DEVICE 25 /* In PM_DEVICE modes, enable device as a wakeup source will prevent 26 * system to switch it off (clock off, set pins to sleep configuration, ...) 27 * It is not requested in CONFIG_PM mode only as in this case, device is not 28 * suspended before stop mode entry. 29 */ 30 31 bool ret; 32 33 ret = pm_device_wakeup_is_capable(dev); 34 if (!ret) { 35 printk("Device is not wakeup capable\n"); 36 } else { 37 printk("Device is wakeup capable\n"); 38 39 ret = pm_device_wakeup_enable(dev, true); 40 if (!ret) { 41 printk("Could not enable wakeup source\n"); 42 } else { 43 printk("Wakeup source enable ok\n"); 44 } 45 46 ret = pm_device_wakeup_is_enabled(dev); 47 if (!ret) { 48 printk("Wakeup source not enabled\n"); 49 } else { 50 printk("Wakeup source enabled\n"); 51 } 52 } 53 #endif 54 55 return 0; 56 } 57
