From 2d0724098be75f092477b21e6afb4f988be102e7 Mon Sep 17 00:00:00 2001
From: Guangzong <guangzong@pitt.edu>
Date: Mon, 13 Jun 2022 10:38:50 -0400
Subject: [PATCH] update

---
 CMakeLists.txt  |   2 +-
 main_window.cpp | 119 ++++++++++++++++++++++++++----------------------
 2 files changed, 65 insertions(+), 56 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5cae0f8..026559b 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.21)
 project(com)
-set(CMAKE_PREFIX_PATH "C:\\Programs\\Qt\\6.2.4\\msvc2019_64")
+#set(CMAKE_PREFIX_PATH "C:\\Programs\\Qt\\6.2.4\\msvc2019_64")
 set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTORCC ON)
diff --git a/main_window.cpp b/main_window.cpp
index 8ddd624..d4a15ab 100755
--- a/main_window.cpp
+++ b/main_window.cpp
@@ -157,75 +157,84 @@ static int cnt = 0;
 QByteArray first_frame;
 bool first = true;
 
-
+#define MAX_BUF_LENGTH 1e4
 void main_window::read_data() {
     static int receive_num_cnt = -2;
     static int receive_byte_cnt = 0;
     static int val = 0;
     auto data = port.readAll();
-    if (first) {
-        if (data.length() < 10) {
-            first_frame += data;
-            return;
-        }
-        while (first_frame[0] != 0) {
-            first_frame.remove(0, 1);
-        }
-        int zero_cnt = 0;
-        do {
-            zero_cnt = 0;
-            while (first_frame[0] != 0) {
-                first_frame.remove(0, 1);
-            }
-
-            for (int i = 0; i < 4; i++) {
-                zero_cnt += first_frame[i] == 0 ? 1 : 0;
-            }
-            first_frame.remove(0, 1);
-        } while (zero_cnt != 0);
-        data = first_frame;
-        first = false;
-    }
-    // TODO: BUG int data overflow
-    rawDataFile.write(data);
-    for (int i = 0; i < data.size(); i++) {
-        if (receive_byte_cnt % 4 == 0) {
-            if (data[i] != 0) {
-                msgBox.setText("Error occurred, please restart transmission.");
-                msgBox.exec();
-                return;
-            }
-            receive_num_cnt++;
-            if (receive_num_cnt == -1)
-                continue;
-            int real_number = val;
-            if (real_number & 0x800000) {
-                // negative number
-                real_number = -(~real_number & 0x7fffff + 1);
-            }
-            receivefileStream << real_number << " ";
-            double scaled = (double) real_number / (double) (0x7fffff) * 2.5;
-            plotChartView->append ((double) receive_num_cnt / 1000.0, scaled);
-            val = 0;
-            continue;
-        }
-        val <<= 8;
-        val |= data[i];
-    }
+    auto pre_cursor =hexTextEdit->textCursor();
     QString new_text = QString(data.toHex(' ').toUpper()) + " ";
     hexTextEdit->moveCursor(QTextCursor::End);
+    bool move_to_end = pre_cursor == hexTextEdit->textCursor();
     hexTextEdit->insertPlainText(new_text);
-    auto tmp = hexTextEdit->toPlainText();
+    if (!move_to_end) hexTextEdit->setTextCursor(pre_cursor);
+    pre_cursor = asciiTextEdit->textCursor();
     asciiTextEdit->moveCursor(QTextCursor::End);
     asciiTextEdit->insertPlainText(QString(data));
-    if (tmp.length() > 1e3) {
-        hexTextEdit->setPlainText(tmp.last((int) 1e3));
+    if (!move_to_end) asciiTextEdit->setTextCursor(pre_cursor);
+
+    auto tmp = hexTextEdit->toPlainText();
+    if (tmp.length() > MAX_BUF_LENGTH) {
+        hexTextEdit->setPlainText(tmp.last((int) MAX_BUF_LENGTH));
         hexTextEdit->moveCursor(QTextCursor::End);
     }
     tmp = asciiTextEdit->toPlainText();
-    if (tmp.length() > 1e3) {
-        asciiTextEdit->setPlainText(tmp.last(int(1e3)));
+    if (tmp.length() > MAX_BUF_LENGTH) {
+        asciiTextEdit->setPlainText(tmp.last(int(MAX_BUF_LENGTH)));
         asciiTextEdit->moveCursor(QTextCursor::End);
     }
+    // data processing
+//    if (first) {
+//        if (data.length() < 10) {
+//            first_frame += data;
+//            return;
+//        }
+//        while (first_frame.size() > 0 && first_frame[0] != 0) {
+//            first_frame.remove(0, 1);
+//        }
+//        int zero_cnt = 0;
+//        do {
+//            zero_cnt = 0;
+//            while (first_frame.size() > 0 && first_frame[0] != 0) {
+//                first_frame.remove(0, 1);
+//            }
+//
+//            for (int i = 0; i < 4 && i < first_frame.size(); i++) {
+//                zero_cnt += first_frame[i] == 0 ? 1 : 0;
+//            }
+//            first_frame.remove(0, 1);
+//        } while (zero_cnt != 0);
+//        data = first_frame;
+//        first = false;
+//    }
+//
+//    // TODO: BUG int data overflow
+//    rawDataFile.write(data);
+//    for (int i = 0; i < data.size(); i++) {
+//        if (receive_byte_cnt % 4 == 0) {
+//            if (data[i] != 0) {
+//                msgBox.setText("Error occurred, please restart transmission.");
+//                msgBox.exec();
+//                this->open_port();
+//                return;
+//            }
+//            receive_num_cnt++;
+//            if (receive_num_cnt == -1)
+//                continue;
+//            int real_number = val;
+//            if (real_number & 0x800000) {
+//                // negative number
+//                real_number = -(~real_number & 0x7fffff + 1);
+//            }
+//            receivefileStream << real_number << " ";
+//            double scaled = (double) real_number / (double) (0x7fffff) * 2.5;
+//            plotChartView->append ((double) receive_num_cnt / 1000.0, scaled);
+//            val = 0;
+//            continue;
+//        }
+//        val <<= 8;
+//        val |= data[i];
+//    }
 }