Diff: main.cpp

Revision:

0:d73b14dd8351

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 01 00:49:54 2011 +0000
@@ -0,0 +1,262 @@
+#include "mbed.h"
+#include "CSVParser.h"
+#include "EthernetNetIf.h"
+#include "HTTPClient.h"
+#include "TextLCD.h"
+#include <vector>
+#include <functional>
+
+#define ARRAYSIZE(arr) (int)(sizeof(arr) / sizeof(arr[0]))
+#define min(a,b) (((a)<(b))?(a):(b))
+
+typedef void (*menuftn)(void *);
+
+using namespace std;
+
+DigitalOut myled(LED1);
+Serial pc(USBTX, USBRX);
+EthernetNetIf eth;
+/*
+(
+  IpAddr(110,76,72,244), //IP Address
+  IpAddr(255,255,255,0), //Network Mask
+  IpAddr(110,76,72,1), //Gateway
+  IpAddr(143,248,1,177)  //DNS
+);
+*/
+HTTPClient http;
+TextLCD lcd(p21, p23, p22, p27, p28, p29, p30); // rs, rw, e, d0-d3
+
+vector<StockData *> stocks;
+
+void donothing(void *) {}
+
+void fetchStockData(void *)
+{
+    lcd.cls();
+    lcd.printf("Fetching...");
+    stocks.clear();
+    
+    HTTPText txt;
+    HTTPResult r2 = http.get("http://download.finance.yahoo.com/d/quotes.csv?f=snl1d1c1p2&e=.csv&s=000660.KS,067250.KS", &txt);
+    if(r2 == HTTP_OK)
+    {
+        printf("HTTP_OK\n");
+                
+        char data[1024];
+        int len = strlen(txt.gets());
+        
+        if(len >= 1024)
+        {
+            pc.printf("Result too Long!\n");
+            return;
+        }        
+        
+        strcpy(data, txt.gets());
+        int prevpos = 0;
+        for(int i=0;i<len;i++)
+        {
+            if(data[i] == 13 && data[i+1] == 10)
+            {
+                data[i]=0;
+                stocks.push_back(CSVParser::parseResult(data + prevpos)); // needs to be freed using delete
+                prevpos = i+2;
+            }
+        }
+    }
+    else
+    {
+        pc.printf("Error %d\n", r2);
+    }
+}
+
+void clearStocks() { for(int i=0;i<stocks.size();i++) delete stocks[i]; stocks.clear(); }
+
+void showMenu(int menucnt, const char *menus[], int cursor, int screenpos)
+{
+    if(menucnt == 0) return;
+    lcd.cls();
+    lcd.printf("%s\n", menus[screenpos]);
+    lcd.printf("%s\n", menus[(screenpos+1)%menucnt]);
+    lcd.locate(15, cursor==screenpos?0:1);
+    lcd.putc(0);
+}
+
+void showStock(StockData *data)
+{
+    char menu[20][50];
+    char *menuptr[20];
+    
+    int menucnt = min(CSVParser::fields.size(),20);
+    
+    for(int i=0;i<menucnt;i++)
+    {
+        sprintf(menu[i], "%s : %s", CSVParser::fields[i].second.c_str(), data->field[i]);
+        menuptr[i] = menu[i];
+    }
+    
+    int cursor = 0;    
+    while(true)
+    {
+        lcd.cls();
+        lcd.printf("%s\n", menuptr[cursor]);
+        char ch = getchar();
+        switch(ch)
+        {
+            case 'i':
+                return;
+            case 'j':
+                cursor = (cursor + 1) % menucnt;
+                break;
+            case 'k':
+                cursor = (cursor - 1 + menucnt) % menucnt;
+                break;
+        }
+    }    
+    return;
+}
+
+void listStocks(void *)
+{
+    const char *menu[20];
+    int menucnt = stocks.size();
+    for(int i=0;i<menucnt;i++)
+        menu[i] = stocks[i]->field[1];
+        
+    if(menucnt == 0) return;
+        
+    int cursor = 0, screenpos = 0;
+    while(true)
+    {
+        showMenu(menucnt, menu, cursor, screenpos);
+        char ch = getchar();
+        switch(ch)
+        {
+            case 'i':
+                return;
+            case 'j':
+                if(screenpos != cursor)
+                {
+                    screenpos = (screenpos + 1) % menucnt;
+                }
+                cursor = (cursor + 1) % menucnt;
+                break;
+            case 'k':
+                if(screenpos == cursor)
+                {
+                    cursor = (cursor - 1 + menucnt) % menucnt;
+                    screenpos = cursor;
+                }
+                else
+                {
+                    cursor = (cursor - 1 + menucnt) % menucnt;
+                }
+                break;
+            case 32: // space
+                showStock(stocks[cursor]);
+                break;            
+        }
+    }
+}
+
+void startMenu(void *)
+{
+    int pattern[8];
+    pattern[0] = 0x1;
+    pattern[1] = 0x3;
+    pattern[2] = 0x7;
+    pattern[3] = 0xf;
+    pattern[4] = 0xf;
+    pattern[5] = 0x7;
+    pattern[6] = 0x3;
+    pattern[7] = 0x1;
+  
+    lcd.writeCGRAM(0, pattern);
+  
+    //lcd.locate(15,0);
+    //lcd.putc(0);   // user pattern 0
+    
+    const char *menu[] = { "Get Data", "List Data", "Do Some", "Menu Test" };    
+    menuftn ftn[] = { fetchStockData, listStocks, donothing, donothing };
+    int menucnt = 4;    
+    
+    int cursor = 0, screenpos = 0;
+
+    while(true)
+    {
+        showMenu(menucnt, menu, cursor, screenpos);    
+
+        char ch = getchar();
+        switch(ch)
+        {
+            case 'j':
+                if(screenpos != cursor)
+                {
+                    screenpos = (screenpos + 1) % menucnt;
+                }
+                cursor = (cursor + 1) % menucnt;
+                break;
+            case 'k':
+                if(screenpos == cursor)
+                {
+                    cursor = (cursor - 1 + menucnt) % menucnt;
+                    screenpos = cursor;
+                }
+                else
+                {
+                    cursor = (cursor - 1 + menucnt) % menucnt;
+                }
+                break;
+            case 32: // space
+                ftn[cursor](NULL);
+                break;            
+        }
+    }    
+}
+
+int main() 
+{
+    lcd.cls();
+    /* setting fields information of Yahoo! finance */
+    char *fields[] = { "s", "n", "l1", "d1", "c1", "p2" };
+    char *desc[] = { "Symbol", "Name", "Last Trade", "Last Trade Date", "Change", "Change in Percent" };   
+    
+    lcd.printf("Init...");
+
+    pc.baud(9600);
+    EthernetErr ethErr = eth.setup();
+    if(ethErr)
+    {
+        pc.printf("Error %d in setup.\n", ethErr);
+        return -1;
+    }
+    pc.printf("\r\nSetup OK\r\n");
+    
+    pc.printf("CSVParser Fields Input\r\n");
+    
+    CSVParser::fields.clear();
+
+    for(int i=0;i<ARRAYSIZE(fields);i++)
+    {
+        pc.printf("pushing %s %s\n", fields[i], desc[i]);
+        CSVParser::fields.push_back(make_pair(fields[i], desc[i]));
+    }
+    
+    pc.printf("CSVParser Setup OK\r\n");    
+    
+    lcd.cls();
+    
+    startMenu(NULL);
+    
+/*
+    for(int i=0;i<min(2, stocks.size());i++)
+    {
+        StockData *data = stocks[stocks.size()-1-i];
+        lcd.printf("%s\n",data->field[1]);
+    }
+*/    
+
+    clearStocks();
+    
+    while(1) {}
+}