Simple webserver in go

- Better Makefile
- Added basic dependencies in the Makefile

.gitignore

@@ -1 +1,3 @@
 build/
+.cache/
+sdkconfig*

Makefile

@@ -0,0 +1,6 @@
+monitor:
+	idf.py -p /dev/ttyUSB0 flash monitor
+env:
+	nix --experimental-features 'nix-command flakes' develop github:mirrexagon/nixpkgs-esp-dev#esp32-idf
+server:
+	go run main.go

dependencies.lock

@@ -0,0 +1,8 @@
+dependencies:
+  idf:
+    source:
+      type: idf
+    version: 5.5.1
+manifest_hash: 0938fe5fc43e8ea0c6dda60b9f593e186303cb1b17412f4d696784db8099a7e9
+target: esp32
+version: 2.0.0

main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+)
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "POST only", http.StatusMethodNotAllowed)
+		return
+	}
+
+	body, err := io.ReadAll(r.Body)
+	if err != nil {
+		http.Error(w, "read error", http.StatusBadRequest)
+		return
+	}
+	defer r.Body.Close()
+
+	fmt.Println("Received:", string(body))
+
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte("ok"))
+}
+
+func main() {
+	http.HandleFunc("/data", handler)
+
+	addr := ":8080"
+	log.Println("Listening on", addr)
+	log.Fatal(http.ListenAndServe(addr, nil))
+}
+

main/CMakeLists.txt

@@ -1,3 +1,3 @@
 idf_component_register(SRCS "station_example_main.c"
-                    PRIV_REQUIRES esp_wifi nvs_flash
+                    PRIV_REQUIRES esp_wifi nvs_flash esp_adc
                     INCLUDE_DIRS ".")

main/station_example_main.c

@@ -18,6 +18,11 @@
 
 #include "lwip/err.h"
 #include "lwip/sys.h"
+#include <math.h>
+
+#include "esp_adc/adc_continuous.h"
+#include "esp_adc/adc_cali.h"
+
 
 /* The examples use WiFi configuration that you can set via project configuration menu