From 6786acdebcd9e7ccc8dd60accabc11d9f7d4b55e Mon Sep 17 00:00:00 2001
From: Luke Else <mail@luke-else.co.uk>
Date: Sun, 2 Jul 2023 18:12:19 +0100
Subject: [PATCH] Updated code to start up AP after 3 local network scans

---
 Cargo.toml  |  1 +
 src/main.rs | 27 ++++++++++++++++++++++++---
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index abe7552..95e21a0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,6 +33,7 @@ esp-idf-sys = { version = "0.33", default-features = false }
 esp-idf-hal = { version = "0.41", optional = true, default-features = false }
 esp-idf-svc = { version = "0.46", optional = true, default-features = false }
 embedded-svc = { version = "0.25", optional = true, default-features = false }
+heapless = "0.7.16"
 
 [build-dependencies]
 embuild = "0.31.2"
diff --git a/src/main.rs b/src/main.rs
index b868ded..c8b32bd 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,4 @@
-use embedded_svc::wifi::{Configuration, ClientConfiguration};
+use embedded_svc::wifi::{Configuration, ClientConfiguration, AccessPointConfiguration, AuthMethod};
 use esp_idf_svc::{wifi::EspWifi, eventloop::EspSystemEventLoop};
 use esp_idf_sys::{self as _, EspError}; // If using the `binstart` feature of `esp-idf-sys`, always keep this module imported
 use esp_idf_hal::prelude::Peripherals;
@@ -15,14 +15,19 @@ fn main() -> Result<(), EspError> {
     let peripherals = Peripherals::take().unwrap();
     let modem = peripherals.modem;
 
+    // Get AP SSID and Password and compile time
+    const SSID: &str = env!("WIFI-SSID");
+    const PWD: &str= env!("WIFI-PASSWORD");
+
     // Enable WIFI Module
     let mut wifi = EspWifi::new(modem, sysloop.clone()?, None)?;
     wifi.set_configuration(&Configuration::Client(ClientConfiguration::default()))?;
 
     wifi.start()?;
 
-    loop {
-        //Synchronously perform a scan and return nearby APs    
+    // Scan and print nearby local networks;
+    for _ in 0..3 {
+        // Synchronously perform a scan and return nearby APs    
         let ap_scan_res = wifi.scan()?;
         let nets = ap_scan_res.into_iter().map(|ap| (ap.ssid, ap.signal_strength, rssi_to_percentage(ap.signal_strength)));
         println!("\n\n=======================================");
@@ -31,6 +36,22 @@ fn main() -> Result<(), EspError> {
         }
         println!("=======================================");
     }
+
+    // Disable the WIFI module and change configuration to AP
+    wifi.stop()?;
+
+    let mut ap_config = AccessPointConfiguration::default();
+    ap_config.ssid = heapless::String::<32>::from(SSID);
+    ap_config.auth_method = AuthMethod::WPA2Personal;
+    ap_config.password = heapless::String::<64>::from(PWD);
+
+    wifi.set_configuration(&Configuration::AccessPoint(ap_config))?;
+    wifi.start()?;
+
+    loop {
+        println!("{:?}", wifi.is_up());
+        std::thread::sleep(std::time::Duration::from_millis(100));
+    }
 }
 
 fn rssi_to_percentage(rssi: i8) -> f32 {