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examples/protocols/sntp: use common network component

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This commit is contained in:
Ivan Grokhotkov
2018-11-21 00:41:31 +08:00
committed by bot
parent 28cf1c83df
commit e0f3f62cdf
5 changed files with 26 additions and 83 deletions
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78
examples/protocols/sntp/main/sntp_example_main.c
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@@ -13,33 +13,16 @@
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event_loop.h"
#include "esp_event.h"
#include "esp_log.h"
#include "esp_attr.h"
#include "esp_sleep.h"
#include "nvs_flash.h"
#include "protocol_examples_common.h"
#include "lwip/err.h"
#include "lwip/apps/sntp.h"
/* The examples use simple WiFi configuration that you can set via
'make menuconfig'.
If you'd rather not, just change the below entries to strings with
the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
*/
#define EXAMPLE_WIFI_SSID CONFIG_WIFI_SSID
#define EXAMPLE_WIFI_PASS CONFIG_WIFI_PASSWORD
/* FreeRTOS event group to signal when we are connected & ready to make a request */
static EventGroupHandle_t wifi_event_group;
/* The event group allows multiple bits for each event,
but we only care about one event - are we connected
to the AP with an IP? */
const int CONNECTED_BIT = BIT0;
static const char *TAG = "example";
/* Variable holding number of times ESP32 restarted since first boot.
@@ -50,8 +33,6 @@ RTC_DATA_ATTR static int boot_count = 0;
static void obtain_time(void);
static void initialize_sntp(void);
static void initialise_wifi(void);
static esp_err_t event_handler(void *ctx, system_event_t *event);
void app_main()
@@ -94,9 +75,15 @@ void app_main()
static void obtain_time(void)
{
ESP_ERROR_CHECK( nvs_flash_init() );
initialise_wifi();
xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT,
false, true, portMAX_DELAY);
tcpip_adapter_init();
ESP_ERROR_CHECK( esp_event_loop_create_default() );
/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
* Read "Establishing Wi-Fi or Ethernet Connection" section in
* examples/protocols/README.md for more information about this function.
*/
ESP_ERROR_CHECK(example_connect());
initialize_sntp();
// wait for time to be set
@@ -111,7 +98,7 @@ static void obtain_time(void)
localtime_r(&now, &timeinfo);
}
ESP_ERROR_CHECK( esp_wifi_stop() );
ESP_ERROR_CHECK( example_disconnect() );
}
static void initialize_sntp(void)
@@ -121,44 +108,3 @@ static void initialize_sntp(void)
sntp_setservername(0, "pool.ntp.org");
sntp_init();
}
static void initialise_wifi(void)
{
tcpip_adapter_init();
wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK( esp_wifi_init(&cfg) );
ESP_ERROR_CHECK( esp_wifi_set_storage(WIFI_STORAGE_RAM) );
wifi_config_t wifi_config = {
.sta = {
.ssid = EXAMPLE_WIFI_SSID,
.password = EXAMPLE_WIFI_PASS,
},
};
ESP_LOGI(TAG, "Setting WiFi configuration SSID %s...", wifi_config.sta.ssid);
ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
ESP_ERROR_CHECK( esp_wifi_start() );
}
static esp_err_t event_handler(void *ctx, system_event_t *event)
{
switch(event->event_id) {
case SYSTEM_EVENT_STA_START:
esp_wifi_connect();
break;
case SYSTEM_EVENT_STA_GOT_IP:
xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
/* This is a workaround as ESP32 WiFi libs don't currently
auto-reassociate. */
esp_wifi_connect();
xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
break;
default:
break;
}
return ESP_OK;
}