| /* |
| * Copyright (c) 2019 Linaro Limited |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr.h> |
| |
| #include <device.h> |
| #include <drivers/counter.h> |
| #include <sys/printk.h> |
| |
| #define DELAY 2000000 |
| #define ALARM_CHANNEL_ID 0 |
| |
| struct counter_alarm_cfg alarm_cfg; |
| |
| static void test_counter_interrupt_fn(struct device *counter_dev, |
| u8_t chan_id, u32_t ticks, |
| void *user_data) |
| { |
| u32_t now_ticks = counter_read(counter_dev); |
| u64_t now_usec = counter_ticks_to_us(counter_dev, now_ticks); |
| int now_sec = (int)(now_usec / USEC_PER_SEC); |
| struct counter_alarm_cfg *config = user_data; |
| int err; |
| |
| printk("!!! Alarm !!!\n"); |
| printk("Now: %u\n", now_sec); |
| |
| /* Set a new alarm with a double length duration */ |
| config->ticks = config->ticks * 2U; |
| |
| printk("Set alarm in %u sec (%u ticks)\n", |
| (u32_t)(counter_ticks_to_us(counter_dev, |
| config->ticks) / USEC_PER_SEC), |
| config->ticks); |
| |
| err = counter_set_channel_alarm(counter_dev, ALARM_CHANNEL_ID, |
| user_data); |
| if (err != 0) { |
| printk("Alarm could not be set\n"); |
| } |
| } |
| |
| void main(void) |
| { |
| struct device *counter_dev; |
| int err; |
| |
| printk("Counter alarm sample\n\n"); |
| counter_dev = device_get_binding(DT_RTC_0_NAME); |
| if (counter_dev == NULL) { |
| printk("Device not found\n"); |
| return; |
| } |
| |
| counter_start(counter_dev); |
| |
| alarm_cfg.flags = 0; |
| alarm_cfg.ticks = counter_us_to_ticks(counter_dev, DELAY); |
| alarm_cfg.callback = test_counter_interrupt_fn; |
| alarm_cfg.user_data = &alarm_cfg; |
| |
| err = counter_set_channel_alarm(counter_dev, ALARM_CHANNEL_ID, |
| &alarm_cfg); |
| printk("Set alarm in %u sec (%u ticks)\n", |
| (u32_t)(counter_ticks_to_us(counter_dev, |
| alarm_cfg.ticks) / USEC_PER_SEC), |
| alarm_cfg.ticks); |
| |
| if (-EINVAL == err) { |
| printk("Alarm settings invalid\n"); |
| } else if (-ENOTSUP == err) { |
| printk("Alarm setting request not supported\n"); |
| } else if (err != 0) { |
| printk("Error\n"); |
| } |
| |
| while (1) { |
| k_sleep(K_FOREVER); |
| } |
| } |