Play a configured file when rfid-tag is placed on the reader.

device/main/AudioPlayer.cpp

@@ -7,6 +7,8 @@
 AudioPlayer::AudioPlayer() {
     playerHandle = setup_player(NULL, NULL);
     esp_player_init(playerHandle);
+
+    esp_audio_vol_set(playerHandle, 10);
 }
 
 void AudioPlayer::play(char* uri) {

device/main/CMakeLists.txt

@@ -1,2 +1,2 @@
-idf_component_register(SRCS "Networking.cpp" "main.cpp" "WebInterface.cpp" "RFIDInterface.cpp" "audio_setup.c" "AudioPlayer.cpp" 
+idf_component_register(SRCS "Networking.cpp" "main.cpp" "WebInterface.cpp" "RFIDInterface.cpp" "audio_setup.c" "AudioPlayer.cpp" "TagPlayerControl.cpp"
     INCLUDE_DIRS ".")

device/main/RFIDInterface.cpp

@@ -19,10 +19,10 @@ static char* getLastTagId() {
 
 RFIDInterface::RFIDInterface() {
 	startConfig = (rc522_start_args_t){
-        .miso_io     = 26,
-        .mosi_io     = 25,
+        .miso_io     = 12,
+        .mosi_io     = 13,
 		.sck_io      = 23,
-        .sda_io      = 5,
+        .sda_io      = 18,  
         .callback    = [](uint8_t* sn) { // serial number is always 5 bytes long
                 ESP_LOGI(TAG, "Tag: %#x %#x %#x %#x %#x",
                     sn[0], sn[1], sn[2], sn[3], sn[4]

device/main/TagPlayerControl.cpp

@@ -0,0 +1,52 @@
+#include "TagPlayerControl.hpp"
+
+#include "AudioPlayer.hpp"
+
+#include <iostream>
+#include <fstream>
+#include <string>
+
+#include <esp_log.h>
+
+static const char* TAG = "TagPlayerControl";
+
+TagPlayerControl::TagPlayerControl(AudioPlayer* player) {	
+	audioPlayer = player;
+}
+
+void TagPlayerControl::onTagChanged(char* tagId) {
+	std::string filePath = "/sdcard/internal/";
+	filePath.append(tagId);
+
+	std::fstream file(filePath);
+
+	if (! file) {
+		ESP_LOGE(TAG, "Error opening file for tag %s", tagId);
+
+		char* error_name;
+
+		switch (errno)
+		{
+			case EACCES:
+				ESP_LOGE(TAG, "EACCESS");
+				break;
+			case ENOENT:
+				ESP_LOGE(TAG, "ENOENT");
+				break;
+			default:
+				ESP_LOGE(TAG, "not parsed");
+		}
+		return;
+	}
+
+	std::string line;
+	std::string content;
+
+	while(getline(file, line)) {
+		content.append(line);
+	}
+
+	audioPlayer->play((char*)(content.c_str()));
+
+	file.close();
+}

device/main/TagPlayerControl.hpp

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "AudioPlayer.hpp"
+
+class TagPlayerControl {
+	AudioPlayer* audioPlayer;
+
+	public:
+		TagPlayerControl(AudioPlayer* player);
+		void onTagChanged(char* tagId);
+};

device/main/WebInterface.cpp

@@ -40,7 +40,7 @@ void WebInterface::initSD() {
 	esp_periph_set_handle_t set = esp_periph_set_init(&periph_cfg);
 
 	// Initialize SD Card peripheral
-	if (audio_board_sdcard_init(set, SD_MODE_4_LINE) == ESP_FAIL) {
+	if (audio_board_sdcard_init(set, SD_MODE_1_LINE) == ESP_FAIL) {
 		ESP_LOGE(TAG, "Sdcard not mounted");
 	} else {
 		ESP_LOGI(TAG, "SDCard mounted");

device/main/WebInterface.hpp

@@ -11,9 +11,9 @@ class WebInterface {
 		void start();
 		void finishResourceRegistrations();
 		void registerResource(httpd_uri_t* config);
+		void initSD();
 
 	private:
-		void initSD();
 		httpd_handle_t start_webserver();
 		void registerFileServer();
 		//esp_err_t hello_get_handler(httpd_req_t *req); 

device/main/main.cpp

@@ -4,6 +4,9 @@
 #include "WebInterface.hpp"
 #include "RFIDInterface.hpp"
 #include "AudioPlayer.hpp"
+#include "TagPlayerControl.hpp"
+
+#include <iostream>
 
 extern "C" {
     void app_main();
@@ -16,14 +19,21 @@ RFIDInterface rfid;
 void app_main(void) {
     initArduino();
 
-    networking.connectWifi();
+    webInterface.initSD();
+
+  /*   networking.connectWifi();
     webInterface.start();
 
     rfid.registerWebResources(&webInterface);
     webInterface.finishResourceRegistrations();
-
+*/
     AudioPlayer audioPlayer; // initialize here, because the ctor does init stuff that fails when executed before `app_main()`
-    audioPlayer.play("file://sdcard/howcanwehangontoadream.mp3");
 
     rfid.start();
+ 
+    TagPlayerControl tagPlayerControl(&audioPlayer);
+
+    rfid.registerTagChangeCallback([&tagPlayerControl](char* tagId) {
+        tagPlayerControl.onTagChanged(tagId);
+    });
 }