<![CDATA[Simple Wi-Fi signal strength]]>It's like an icon of LTE signal strength, but...
Of course, I wanted to do it in a way that everyone knows, but...It's too complicated. Does anyone have a simple implementation experience?

void showWifiSignal()
{

int nWifi = getWifidBm();
M5.Lcd.setCursor(2, 30);
M5.Lcd.setTextSize(1);
M5.Lcd.print(String(nWifi)+"dBm");

if(nWifi < -50 && nWifi == 0 )
{
M5.Lcd.drawRoundRect(30, 12, 5, 16, 1, LIGHTGREY);

}
else
{
M5.Lcd.fillRoundRect(30, 12, 5, 16, 1, BLACK);
}

if(nWifi < -70 && nWifi == 0)
{
M5.Lcd.drawRoundRect(22, 16, 5, 12, 1, LIGHTGREY);

}
else
{
M5.Lcd.fillRoundRect(22, 16, 5, 12, 1, BLACK);
}

if(nWifi < -80 && nWifi == 0)
{
M5.Lcd.drawRoundRect(14, 20, 5, 8, 1, LIGHTGREY);

}
else
{
M5.Lcd.fillRoundRect(14, 20, 5, 8, 1, BLACK);
}

if(nWifi < -90 && nWifi == 0)
{
M5.Lcd.drawRoundRect(6, 23, 5, 5, 1, LIGHTGREY);
}
else
{
M5.Lcd.fillRoundRect(6, 23, 5, 5, 1, BLACK);
}
}

]]>https://community.m5stack.com/topic/1780/simple-wi-fi-signal-strengthRSS for NodeWed, 29 Apr 2026 17:14:54 GMTFri, 20 Mar 2020 09:29:20 GMT60<![CDATA[Reply to Simple Wi-Fi signal strength on Sat, 04 Apr 2020 18:10:29 GMT]]>you can try this pice of code which is working for me:
.

.

#include <WiFi.h>
#include "Free_Fonts.h"
#include <M5Stack.h>

const char* ssid = "your_host";
const char* password = "your_password";
WiFiClient client;

void setup() {
M5.begin();
// Connecting to WiFi:
M5.Lcd.setFreeFont(FM9); M5.Lcd.setTextSize(1); M5.Lcd.setTextColor(TFT_WHITE);
M5.Lcd.print("\n\nConnecting to ");
M5.Lcd.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
M5.Lcd.setTextWrap(true);
M5.Lcd.print(".");
delay(500);
}
M5.Lcd.println("\nWiFi connected");
delay(1000);
M5.Lcd.fillScreen(TFT_BLACK);
}

void loop() {
showWifiStrength();
delay(2000);
}

// show Wifi-RSSI level (signal strength in 4 bars + dBm )
void showWifiStrength() {
int WifiRSSI = WiFi.RSSI();
M5.Lcd.fillRect(40, 0, 68, 15, TFT_BLACK);
M5.Lcd.setCursor(40, 14);
M5.Lcd.print(String(WifiRSSI) + "dBm");
if (WifiRSSI > -50 & ! WifiRSSI == 0 ) M5.Lcd.fillRoundRect(26, 1, 5, 12, 1, TFT_WHITE);
else M5.Lcd.fillRoundRect(26, 1, 5, 12, 1, TFT_DARKGREY);
if (WifiRSSI > -70 & ! WifiRSSI == 0) M5.Lcd.fillRoundRect(18, 3, 5, 10, 1, TFT_WHITE);
else M5.Lcd.fillRoundRect(18, 3, 5, 10, 1, TFT_DARKGREY);
if (WifiRSSI > -80 & ! WifiRSSI == 0) M5.Lcd.fillRoundRect(10, 5, 5, 8, 1, TFT_WHITE);
else M5.Lcd.fillRoundRect(10, 5, 5, 8, 1, TFT_DARKGREY);
if (WifiRSSI > -90 & ! WifiRSSI == 0)
M5.Lcd.fillRoundRect(2, 7, 5, 6, 1, TFT_WHITE);
else M5.Lcd.fillRoundRect(2, 7, 5, 6, 1, TFT_RED);
}

]]>https://community.m5stack.com/post/8009https://community.m5stack.com/post/8009Sat, 04 Apr 2020 18:10:29 GMT