Ping from ESP32
Ping from ESP32
Hi,
What APIs can be used to ping to an address from ESP32? I can see that there is ping_send in lwip/apps/ping but this function header is not available. The header file only provides ping_init().
What APIs can be used to ping to an address from ESP32? I can see that there is ping_send in lwip/apps/ping but this function header is not available. The header file only provides ping_init().
Re: Ping from ESP32
This is a old question but just in case it helps the next guy....
It took me a while to figure out how to use the ping api but just create a pingResults function and make some calls to esp_ping_set_target to config things and call ping_init();
also in eps_ping.c I got rid of the "x 1000" multipliers and pass ping_timeout and ping_delay in mS
It took me a while to figure out how to use the ping api but just create a pingResults function and make some calls to esp_ping_set_target to config things and call ping_init();
Code: Select all
esp_err_t pingResults(ping_target_id_t msgType, esp_ping_found * pf){
...
}
app_main() {
....
esp_ping_set_target(PING_TARGET_IP_ADDRESS_COUNT, &ping_count, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_RCV_TIMEO, &ping_timeout, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_DELAY_TIME, &ping_delay, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_IP_ADDRESS, &gw.addr, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_RES_FN, &pingResults, sizeof(pingResults));
ping_init();
...
}
-
- Posts: 1
- Joined: Fri Jan 26, 2018 8:59 am
Re: Ping from ESP32
Hi!
Thanks for this code example! Is it possible to give some explanation or example of function pingResults? It will be wery helpful for understanding.
Thanks for this code example! Is it possible to give some explanation or example of function pingResults? It will be wery helpful for understanding.
Re: Ping from ESP32
Hello,perryc wrote:This is a old question but just in case it helps the next guy....
It took me a while to figure out how to use the ping api but just create a pingResults function and make some calls to esp_ping_set_target to config things and call ping_init();
also in eps_ping.c I got rid of the "x 1000" multipliers and pass ping_timeout and ping_delay in mSCode: Select all
esp_err_t pingResults(ping_target_id_t msgType, esp_ping_found * pf){ ... } app_main() { .... esp_ping_set_target(PING_TARGET_IP_ADDRESS_COUNT, &ping_count, sizeof(uint32_t)); esp_ping_set_target(PING_TARGET_RCV_TIMEO, &ping_timeout, sizeof(uint32_t)); esp_ping_set_target(PING_TARGET_DELAY_TIME, &ping_delay, sizeof(uint32_t)); esp_ping_set_target(PING_TARGET_IP_ADDRESS, &gw.addr, sizeof(uint32_t)); esp_ping_set_target(PING_TARGET_RES_FN, &pingResults, sizeof(pingResults)); ping_init(); ... }
I have also try to understand ping with ESP32, can you provide full code example perryc ?
Thank you.
Re: Ping from ESP32
All your ping info is in the pf struct
Code: Select all
esp_err_t pingResults(ping_target_id_t msgType, esp_ping_found * pf){
printf("AvgTime:%.1fmS Sent:%d Rec:%d Err:%d min(mS):%d max(mS):%d ", (float)pf->total_time/pf->recv_count,
pf->send_count, pf->recv_count, pf->err_count, pf->min_time, pf->max_time );
return ESP_OK;
}
Re: Ping from ESP32
Here's a simple ping app that's based on esp-idf wifi ap example code
Code: Select all
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_spi_flash.h"
#include "freertos/event_groups.h"
#include "esp_wifi.h"
#include "esp_log.h"
#include "esp_event_loop.h"
#include "nvs_flash.h"
#include "lwip/inet.h"
#include "lwip/ip4_addr.h"
#include "lwip/dns.h"
#include "ping.h"
#include "esp_ping.h"
/*Set the SSID and Password via "make menuconfig"*/
#define DEFAULT_SSID CONFIG_WIFI_SSID
#define DEFAULT_PWD CONFIG_WIFI_PASSWORD
#define TRUE 1
#define FALSE 0
#if CONFIG_WIFI_ALL_CHANNEL_SCAN
#define DEFAULT_SCAN_METHOD WIFI_ALL_CHANNEL_SCAN
#elif CONFIG_WIFI_FAST_SCAN
#define DEFAULT_SCAN_METHOD WIFI_FAST_SCAN
#else
#define DEFAULT_SCAN_METHOD WIFI_FAST_SCAN
#endif /*CONFIG_SCAN_METHOD*/
#if CONFIG_WIFI_CONNECT_AP_BY_SIGNAL
#define DEFAULT_SORT_METHOD WIFI_CONNECT_AP_BY_SIGNAL
#elif CONFIG_WIFI_CONNECT_AP_BY_SECURITY
#define DEFAULT_SORT_METHOD WIFI_CONNECT_AP_BY_SECURITY
#else
#define DEFAULT_SORT_METHOD WIFI_CONNECT_AP_BY_SIGNAL
#endif /*CONFIG_SORT_METHOD*/
#if CONFIG_FAST_SCAN_THRESHOLD
#define DEFAULT_RSSI CONFIG_FAST_SCAN_MINIMUM_SIGNAL
#if CONFIG_EXAMPLE_OPEN
#define DEFAULT_AUTHMODE WIFI_AUTH_OPEN
#elif CONFIG_EXAMPLE_WEP
#define DEFAULT_AUTHMODE WIFI_AUTH_WEP
#elif CONFIG_EXAMPLE_WPA
#define DEFAULT_AUTHMODE WIFI_AUTH_WPA_PSK
#elif CONFIG_EXAMPLE_WPA2
#define DEFAULT_AUTHMODE WIFI_AUTH_WPA2_PSK
#else
#define DEFAULT_AUTHMODE WIFI_AUTH_OPEN
#endif
#else
#define DEFAULT_RSSI -127
#define DEFAULT_AUTHMODE WIFI_AUTH_OPEN //WIFI_AUTH_WPA2_PSK
#endif /*CONFIG_FAST_SCAN_THRESHOLD*/
static const char *TAG = "scan";
int gotConn = FALSE;
int first = TRUE;
ip_addr_t ip_Addr;
ip4_addr_t ip;
ip4_addr_t gw;
ip4_addr_t msk;
uint32_t ping_count = 25; //how many pings per report
uint32_t ping_timeout = 1000; //mS till we consider it timed out
uint32_t ping_delay = 500; //mS between pings
uint32_t waiting_results = 0;
static esp_err_t event_handler(void *ctx, system_event_t *event)
{
switch (event->event_id) {
case SYSTEM_EVENT_STA_START:
ESP_LOGI(TAG, "SYSTEM_EVENT_STA_START");
ESP_ERROR_CHECK(esp_wifi_connect());
break;
case SYSTEM_EVENT_STA_GOT_IP:
ESP_LOGI(TAG, "SYSTEM_EVENT_STA_GOT_IP");
ip = event->event_info.got_ip.ip_info.ip;
gw = event->event_info.got_ip.ip_info.gw;
msk = event->event_info.got_ip.ip_info.netmask;
ESP_LOGI(TAG, "Got IP: %s\n",
ip4addr_ntoa(&event->event_info.got_ip.ip_info.ip));
gotConn=TRUE;
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
ESP_LOGI(TAG, "SYSTEM_EVENT_STA_DISCONNECTED");
gotConn=FALSE;
ping_deinit();
ESP_ERROR_CHECK(esp_wifi_connect());
break;
default:
break;
}
return ESP_OK;
}
/* Initialize Wi-Fi as sta and set scan method */
static void wifi_scan(void)
{
tcpip_adapter_init();
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));
wifi_config_t wifi_config = {
.sta = {
.ssid = DEFAULT_SSID,
.password = DEFAULT_PWD,
.scan_method = DEFAULT_SCAN_METHOD,
.sort_method = DEFAULT_SORT_METHOD,
.threshold.rssi = DEFAULT_RSSI,
.threshold.authmode = DEFAULT_AUTHMODE,
},
};
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());
}
int getStrength(int points){
wifi_ap_record_t wifidata;
long rssi = 0;
long averageRSSI=0;
for (int i=0;i < points;i++){
if (esp_wifi_sta_get_ap_info(&wifidata)==0){
rssi += wifidata.rssi;
vTaskDelay(25 / portTICK_PERIOD_MS);
}
}
averageRSSI=rssi/points;
return averageRSSI;
}
esp_err_t pingResults(ping_target_id_t msgType, esp_ping_found * pf){
printf("AvgTime:%.1fmS Sent:%d Rec:%d Err:%d min(mS):%d max(mS):%d ", (float)pf->total_time/pf->recv_count, pf->send_count, pf->recv_count, pf->err_count, pf->min_time, pf->max_time );
printf("Resp(mS):%d Timeouts:%d Total Time:%d\n",pf->resp_time, pf->timeout_count, pf->total_time);
waiting_results = 0;
return ESP_OK;
}
void app_main()
{
printf("esp32 Latency and Packdrop test!\n");
/* Print chip information */
esp_chip_info_t chip_info;
esp_chip_info(&chip_info);
printf("This is ESP32 chip with %d CPU cores, WiFi%s%s, ",
chip_info.cores,
(chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
(chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
printf("silicon revision %d, ", chip_info.revision);
printf("%dMB %s flash\n", spi_flash_get_chip_size() / (1024 * 1024),
(chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
// Initialize NVS
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK( ret );
wifi_scan();
vTaskDelay(5000 / portTICK_PERIOD_MS);
while(TRUE) {
vTaskDelay(1000 / portTICK_PERIOD_MS);
if ((gotConn)&&(!waiting_results)) {
esp_ping_set_target(PING_TARGET_IP_ADDRESS_COUNT, &ping_count, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_RCV_TIMEO, &ping_timeout, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_DELAY_TIME, &ping_delay, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_IP_ADDRESS, &gw.addr, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_RES_FN, &pingResults, sizeof(pingResults));
printf("\nPinging Gateway IP %s WiFi rssi %d\n",inet_ntoa(gw),getStrength(10));
if (first){
first = FALSE;
}
printf("%s, %d, ",inet_ntoa(gw),getStrength(10));
ping_init();
waiting_results = 1;
}
}
}
Re: Ping from ESP32
Hi @perryc.
I'm using this code here and was running into cases where the pinging was taking forever to timeout or complete.
The delay and timeout values are in seconds, see esp_ping_set_target():
The ping thread in ping.c uses sys_msleep() which is documented as:
I'm using this code here and was running into cases where the pinging was taking forever to timeout or complete.
The delay and timeout values are in seconds, see esp_ping_set_target():
Code: Select all
case PING_TARGET_RCV_TIMEO:
ESP_PING_CHECK_OPTLEN(opt_len, uint32_t);
ping_option_info->ping_rcv_timeout = (*(uint32_t *)opt_val) * 1000;
break;
case PING_TARGET_DELAY_TIME:
ESP_PING_CHECK_OPTLEN(opt_len, uint32_t);
ping_option_info->ping_delay = (*(uint32_t *)opt_val) * 1000;
Code: Select all
/* Time functions. */
#ifndef sys_msleep
void sys_msleep(u32_t ms); /* only has a (close to) 1 ms resolution. */
#endif
Re: Ping from ESP32
There is a feb 25/18 bug fix for the esp-idf that gets rid of the of the "* 1000" in esp_ping.c so grab the latest esp-idf and you can pass normal milliseconds time params.
-
- Posts: 23
- Joined: Thu Oct 26, 2017 7:34 am
Re: Ping from ESP32
Hello
I am using ping functionality with following configuration
my call call function is as following
ISSUE is
I am using my ethernet.
After 2 ping if i remove Ethernet cable i am not able to get callback(As my ping count is 5).
Also when i connect Ethernet cable again. fail ping init with -5 error which shows ping is ongoing.
If ping is fails then why i am not getting call back with increased error count ?
am i missing anything or miss understood?
if anyone have idea about it please help me.
I am using ping functionality with following configuration
Code: Select all
PING_TARGET_IP_ADDRESS_COUNT 5
PING_TARGET_RCV_TIMEO 10000
PING_TARGET_DELAY_TIME 500
PING_TARGET_IP_ADDRESS "www.google.com"
PING_TARGET_RES_FN pingResults
Code: Select all
esp_err_t pingResults(ping_target_id_t msgType, esp_ping_found * pf)
{
ESP_LOGI(TAG,"AvgTime:%.1fmS Sent:%d Rec:%d Err:%d min(mS):%d max(mS):%d", (float) pf->total_time / pf->recv_count, pf->send_count, pf->recv_count, pf->err_count, pf->min_time, pf->max_time);
ESP_LOGI(TAG,"Resp(mS):%d Timeouts:%d Total Time:%d Bytes :%d Total Bytes: %d\n", pf->resp_time, pf->timeout_count, pf->total_time, pf->bytes, pf->total_bytes);
if(pf->err_count == 0){
++ping_count_local;
if(ping_count_local >= ping_count){
ping_sucess_flag = ping_external_success;
}
}
else{
ping_sucess_flag = ping_external_failed ;
}
return ESP_OK;
}
I am using my ethernet.
After 2 ping if i remove Ethernet cable i am not able to get callback(As my ping count is 5).
Also when i connect Ethernet cable again. fail ping init with -5 error which shows ping is ongoing.
If ping is fails then why i am not getting call back with increased error count ?
am i missing anything or miss understood?
if anyone have idea about it please help me.
Re: Ping from ESP32
Hi,
I have been trying for a while to make this ping work without success.
From the code above which I have simplified to the max, I still ahve issues:
Appologies, I have not been doing this for a long time.
"ping_init not declared in this scope"
It seems it can't find this although ping.c is included....
This is the error message.
And this is my code:
I have been trying for a while to make this ping work without success.
From the code above which I have simplified to the max, I still ahve issues:
Appologies, I have not been doing this for a long time.
"ping_init not declared in this scope"
It seems it can't find this although ping.c is included....
This is the error message.
Code: Select all
Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: "LOLIN D32, Minimal SPIFFS (Large APPS with OTA), 80MHz, 512000, None"
C:\Users\etawy\OneDrive\Development\Arduino\TestSketches\ping_test\ping_test.ino: In function 'void loop()':
ping_test:95:13: error: 'ping_init' was not declared in this scope
ping_init();
^
Multiple libraries were found for "WiFi.h"
Used: C:\Users\etawy\OneDrive\Documents Perso\ArduinoData\packages\esp32\hardware\esp32\1.0.2\libraries\WiFi
Not used: C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.21.0_x86__mdqgnx93n4wtt\libraries\WiFi
exit status 1
'ping_init' was not declared in this scope
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Code: Select all
/*
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_spi_flash.h"
#include "freertos/event_groups.h"
#include "esp_log.h"
#include "esp_event_loop.h"
#include "nvs_flash.h"
*/
#include "esp_system.h"
#include "lwip/dns.h"
#include "esp_wifi.h"
#include "lwip/inet.h"
#include "esp_ping.h"
#include "lwip/ip4_addr.h"
#include "lwip/ip_addr.h"
// to make this work for v1.01 just change in file Ping.cpp in your library path:
// inet_addr_from_ipaddr to inet_addr_from_ip4addr
// inet_addr_to_ipaddr to inet_addr_to_ip4addr
#include "ping.h"
#include "esp_ping.h"
#include <WiFi.h>
//ip_addr_t ip_Addr;
ip4_addr_t gw;
uint32_t ping_count = 25; //how many pings per report
uint32_t ping_timeout = 1000; //mS till we consider it timed out
uint32_t ping_delay = 500; //mS between pings
uint32_t waiting_results = 0;
/*
#define PING_TARGET_IP_ADDRESS_COUNT 5
#define PING_TARGET_RCV_TIMEO 10000
#define PING_TARGET_DELAY_TIME 500
#define PING_TARGET_IP_ADDRESS "www.google.com"
#define PING_TARGET_RES_FN pingResults
*/
// the setup function runs once when you press reset or power the board
const char ssid[] = "SFR-XXXX"; // your network SSID (name)
const char password[] = "XXXXXXXX"; // your network password
void setup() {
Serial.begin(115200);
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
}
esp_err_t pingResults(ping_target_id_t msgType, esp_ping_found * pf) {
printf("AvgTime:%.1fmS Sent:%d Rec:%d Err:%d min(mS):%d max(mS):%d ", (float)pf->total_time / pf->recv_count, pf->send_count, pf->recv_count, pf->err_count, pf->min_time, pf->max_time );
printf("Resp(mS):%d Timeouts:%d Total Time:%d\n", pf->resp_time, pf->timeout_count, pf->total_time);
waiting_results = 0;
return ESP_OK;
}
int getStrength(int points) {
wifi_ap_record_t wifidata;
long rssi = 0;
long averageRSSI = 0;
for (int i = 0; i < points; i++) {
if (esp_wifi_sta_get_ap_info(&wifidata) == 0) {
rssi += wifidata.rssi;
vTaskDelay(25 / portTICK_PERIOD_MS);
}
}
averageRSSI = rssi / points;
return averageRSSI;
}
void loop() {
gw.addr = ipaddr_addr("8.8.8.8");
esp_ping_set_target(PING_TARGET_IP_ADDRESS_COUNT, &ping_count, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_RCV_TIMEO, &ping_timeout, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_DELAY_TIME, &ping_delay, sizeof(uint32_t));
esp_ping_set_target(PING_TARGET_IP_ADDRESS, &gw.addr, sizeof(uint32_t));
//esp_ping_set_target(PING_TARGET_RES_FN, &pingResults, sizeof(pingResults));
printf("\nPinging Gateway IP %s WiFi rssi %d\n", inet_ntoa(gw), getStrength(10));
printf("%s, %d, ", inet_ntoa(gw), getStrength(10));
ping_init();
waiting_results = 1;
}
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