From 7b63256835064e7705a20445c695f9271a76f9d6 Mon Sep 17 00:00:00 2001
From: Siwat Sirichai <siwat@siwatinc.com>
Date: Fri, 29 Dec 2023 02:36:18 +0700
Subject: [PATCH] display prototype

---
 .../lib/ESPMegaPRO/ESPMegaDisplay.cpp         | 56 +++++++++++++++++++
 .../lib/ESPMegaPRO/ESPMegaDisplay.hpp         | 47 ++++++++++++++++
 2 files changed, 103 insertions(+)
 create mode 100644 Template Project/lib/ESPMegaPRO/ESPMegaDisplay.cpp
 create mode 100644 Template Project/lib/ESPMegaPRO/ESPMegaDisplay.hpp

diff --git a/Template Project/lib/ESPMegaPRO/ESPMegaDisplay.cpp b/Template Project/lib/ESPMegaPRO/ESPMegaDisplay.cpp
new file mode 100644
index 0000000..b3e35a5
--- /dev/null
+++ b/Template Project/lib/ESPMegaPRO/ESPMegaDisplay.cpp	
@@ -0,0 +1,56 @@
+#include <ESPMegaDisplay.hpp>
+
+void ESPMegaDisplay::recieveSerialCommand(){
+    // Read the serial buffer if available
+    while(displayAdapter->available()) {
+        rx_buffer[rx_buffer_index] = displayAdapter->read();
+        rx_buffer_index++;
+        // Check for overflow
+        if(rx_buffer_index>=256){
+            rx_buffer_index = 0;
+        }
+        this-> processSerialCommand();
+    }
+        
+}
+
+void ESPMegaDisplay::processSerialCommand(){
+    // Check if the rx buffer ended with stop bytes (0xFF 0xFF 0xFF)
+    if(rx_buffer_index<3) return;
+    if(rx_buffer[rx_buffer_index-1]!=0xFF) return;
+    if(rx_buffer[rx_buffer_index-2]!=0xFF) return;
+    if(rx_buffer[rx_buffer_index-3]!=0xFF) return;
+    // The rx buffer ended with stop bytes
+    // Check if the rx buffer is a push payload
+    // The payload type is the first byte of the payload
+    // 0x00 is invalid instruction
+    // 0x01 is success
+    // 0x65 is a touch event
+    // 0x66 is a page report event
+    if(rx_buffer[0]==0x65){
+        processTouchPayload();
+    }
+    else if(rx_buffer[0]==0x66){
+        processPageReportPayload();
+    }
+}
+
+void ESPMegaDisplay::processTouchPayload() {
+    if (rx_buffer_index != 4) return;
+    // The second byte of the payload is the page number
+    uint8_t page = rx_buffer[1];
+    // The third byte of the payload is the component id
+    uint8_t component = rx_buffer[2];
+    // The fourth byte of the payload is the event
+    uint8_t event = rx_buffer[3];
+    // 0x01 is press, 0x00 is release
+}
+
+void ESPMegaDisplay::processPageReportPayload() {
+    // The second byte of the payload is the page number
+    this->currentPage = rx_buffer[1];
+    if(pageChangeCallback!=NULL){
+        pageChangeCallback(this->currentPage);
+    }
+    rx_buffer_index = 0;
+}
\ No newline at end of file
diff --git a/Template Project/lib/ESPMegaPRO/ESPMegaDisplay.hpp b/Template Project/lib/ESPMegaPRO/ESPMegaDisplay.hpp
new file mode 100644
index 0000000..760219c
--- /dev/null
+++ b/Template Project/lib/ESPMegaPRO/ESPMegaDisplay.hpp	
@@ -0,0 +1,47 @@
+#include <Arduino.h>
+#include <ESPMegaPRO_OOP.hpp>
+class ESPMegaDisplay
+{
+    public:
+        ESPMegaDisplay(HardwareSerial *displayAdapter, ESPMegaPRO *espmega);
+        void begin();
+        void loop();
+        void reset();
+        void setBrightness(int value);
+        void jumpToPage(int page);
+        void setString(char* component, char* value);
+        void setNumber(char* component, int value);
+        char* getString(char* component);
+        int getNumber(char* component);
+        void bindInputPage(uint8_t card_id);
+        void bindOutputPage(uint8_t card_id);
+        void handlePwmStateChange(uint8_t pin, uint16_t value);
+        void handleInputStateChange(uint8_t pin, bool state);
+        void registerPushCallback(std::function<void(uint8_t, uint8_t)> callback);
+        void registerPopCallback(std::function<void(uint8_t, uint8_t)> callback);
+        void registerPageChangeCallback(std::function<void(uint8_t)> callback);
+        void unregisterPushCallback();
+        void unregisterPopCallback();
+        void unregisterPageChangeCallback();
+    private:
+        uint8_t inputCardId;
+        uint8_t outputCardId;
+        uint8_t currentPage;
+        uint8_t rx_buffer_index;
+        char rx_buffer[256];
+        char tx_buffer[256];
+        void recieveSerialCommand();
+        void processSerialCommand();
+        void processTouchPayload();
+        void processPageReportPayload();
+        void sendStopBytes();
+        void sendCommand(char* command);
+        void refreshPage();
+        void refreshInputPage();
+        void refreshOutputPage();
+        HardwareSerial *displayAdapter;
+        ESPMegaPRO *espmega;
+        std::function<void(uint8_t, uint8_t)> pushCallback;
+        std::function<void(uint8_t, uint8_t)> popCallback;
+        std::function<void(uint8_t)> pageChangeCallback;
+};
\ No newline at end of file