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samples: Bluetooth: Add LED blinking to peripheral_hr

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Add LED blinking state to peripheral_hr indicating
advertising state, and LED On state to indicate connected
to a central device, respectively.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2024-03-15 12:24:33 +01:00 • committed by Fabio Baltieri
commit bdf6230236
1 changed files with 85 additions and 7 deletions
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92
samples/bluetooth/peripheral_hr/src/main.c
View file

@ -7,13 +7,8 @@
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/types.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <zephyr/sys/printk.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci.h>
@ -124,6 +119,73 @@ static void hrs_notify(void)
}
}
#if defined(CONFIG_GPIO)
/* The devicetree node identifier for the "led0" alias. */
#define LED0_NODE DT_ALIAS(led0)
#if DT_NODE_HAS_STATUS(LED0_NODE, okay)
#include <zephyr/drivers/gpio.h>
#define HAS_LED 1
static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios);
#define BLINK_ONOFF K_MSEC(500)
static struct k_work_delayable blink_work;
static bool led_is_on;
static void blink_timeout(struct k_work *work)
{
led_is_on = !led_is_on;
gpio_pin_set(led.port, led.pin, (int)led_is_on);
k_work_schedule(&blink_work, BLINK_ONOFF);
}
static int blink_setup(void)
{
int err;
printk("Checking LED device...");
if (!gpio_is_ready_dt(&led)) {
printk("failed.\n");
return -EIO;
}
printk("done.\n");
printk("Configuring GPIO pin...");
err = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
if (err) {
printk("failed.\n");
return -EIO;
}
printk("done.\n");
k_work_init_delayable(&blink_work, blink_timeout);
return 0;
}
static void blink_start(void)
{
printk("Start blinking LED...\n");
led_is_on = false;
gpio_pin_set(led.port, led.pin, (int)led_is_on);
k_work_schedule(&blink_work, BLINK_ONOFF);
}
static void blink_stop(void)
{
struct k_work_sync work_sync;
printk("Stop blinking LED.\n");
k_work_cancel_delayable_sync(&blink_work, &work_sync);
/* Keep LED on */
led_is_on = true;
gpio_pin_set(led.port, led.pin, (int)led_is_on);
}
#endif /* LED0_NODE */
#endif /* CONFIG_GPIO */
int main(void)
{
int err;
@ -193,6 +255,15 @@ int main(void)
printk("Advertising successfully started\n");
#if defined(HAS_LED)
err = blink_setup();
if (err) {
return 0;
}
blink_start();
#endif /* HAS_LED */
/* Implement notification. */
while (1) {
k_sleep(K_SECONDS(1));
@ -206,6 +277,9 @@ int main(void)
if (atomic_test_and_clear_bit(state, STATE_CONNECTED)) {
/* Connected callback executed */
#if defined(HAS_LED)
blink_stop();
#endif /* HAS_LED */
} else if (atomic_test_and_clear_bit(state, STATE_DISCONNECTED)) {
#if defined(CONFIG_BT_EXT_ADV)
printk("Starting Extended Advertising (connectable and non-scannable)\n");
@ -215,6 +289,10 @@ int main(void)
return 0;
}
#endif /* CONFIG_BT_EXT_ADV */
#if defined(HAS_LED)
blink_start();
#endif /* HAS_LED */
}
}