Diff: main.cpp

Revision:

0:d8a2cab7091c

Child:

1:beff52210994

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Jul 10 05:28:10 2012 +0000
@@ -0,0 +1,197 @@
+#include "mbed.h"
+#include "GSwifi.h"
+#include "7seg.h"
+
+#define HTTP_HOST "www.kepco.co.jp"
+#define HTTP_URI "/yamasou/juyo1_kansai.csv"
+#define SSID "SSID"
+#define PASS "pass1234567"
+
+#define VREF 3.3
+#define B 3435 // thermistor B
+#define T0 25.0
+#define R0 10000.0 // R0 ohm
+#define RU 10000.0 // pullup ohm
+
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+Serial pc(USBTX, USBRX);
+GSwifi gs(p13, p14, p12, P0_22); // TX, RX, CTS, RTS
+DigitalOut gs_reset(p9), gs_wakeup(p10);
+DigitalOut led1(LED1);
+PwmOut led2(LED2), led3(LED3), led4(LED4);
+#elif defined(TARGET_LPC11U24)
+GSwifi gs(p9, p10, p21, p22); // TX, RX, CTS, RTS
+DigitalOut gs_reset(P1_14), gs_wakeup(P1_3);
+//DigitalOut gs_reset(p27), gs_wakeup(p28);
+DigitalOut led1(LED1), led2(LED2), led3(LED3), led4(LED4);
+#endif
+
+volatile int denki_flg = 0;
+volatile int denki_capacity = 0;
+volatile int denki_usage = 0;
+volatile int year, month, day, hour, minute;
+
+AnalogIn adtemp(p20);
+
+void callback_http (int cid, int acid, int len) {
+    static int n = 0;
+//    static char buf[1024], data[80];
+    static char buf[200], data[100];
+    int i;
+    int last = len;
+
+  while (last) {
+    len = gs.recv(cid, buf, last < sizeof(buf) ? last : sizeof(buf));
+    last = last - len;
+
+    for (i = 0; i < len; i ++) {
+        if (buf[i] == '\r') continue;
+
+        if (denki_flg <= 1) {
+            // header
+            if (strncmp(buf, "200 OK", 6) == 0) {
+                i += 7;
+                denki_flg = 2;
+            }
+            continue;
+        }
+
+        // body        
+        if (buf[i] == '\n') {
+            data[n] = 0;
+            switch (denki_flg) {
+            case 2:
+                // update
+                break;
+            case 4:
+                // capacity
+                if (data[0] >= '0' && data[0] <= '9') {
+                    denki_capacity = atoi(data);
+                }
+                break;
+            case 7:
+                // yosou1
+                break;
+            case 10:
+                // yosou2
+                break;
+            default:
+                // text
+                if (data[0] == 'D' && data[1] == 'A') {
+                    denki_flg = denki_flg < 100 ? 100 : 200;
+                }
+                break;
+            }
+            if (denki_flg > 200 && data[n - 1] >= '0' && data[n - 1] <= '9') {
+                sscanf(data, "%d/%d/%d,%d:%d,%d", &year, &month, &day, &hour, &minute, &denki_usage);
+            }
+            n = 0;
+            denki_flg ++;
+        } else {
+            // data
+            if (n < sizeof(data) - 1) {
+                data[n] = buf[i];
+                n ++;
+            }
+        }
+
+    }
+
+  }
+}
+
+float get_temp () {
+    float ad, v, r, t;
+
+    v = adtemp * VREF;
+    r = v / ((VREF - v) / RU);
+    t = (1.0 / ((1.0 / (T0 + 273.15)) + (log(r / R0) / B))) - 273.15;
+    if (t < -50) t = 0;
+    return t;
+}
+
+void Sleep () {
+    __WFI();
+}
+
+int main() {
+    int flg = 1, r;
+    float denki_percentage = 0;
+    Host host;
+    int count = 0;
+
+    initled();
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+    pc.baud(115200);
+#endif
+    gs_reset = 0;
+    gs_wakeup = 1;
+    wait_ms(100);
+    gs_reset = 1;
+    wait_ms(500);
+    led1 = 1;
+
+    if (gs.connect(GSSEC_WPA2_PSK, SSID, PASS, 1)) {
+        return -1;
+    }
+
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+    pc.printf("Denki-yohou: %s\r\n", HTTP_HOST);
+#endif
+    host.setName(HTTP_HOST);
+
+    startled();
+    while(1) {
+        gs.poll();
+        
+        if (flg || gs.getStatus() == GSSTAT_WAKEUP) {
+            led1 = 1;
+            if (gs.getStatus() == GSSTAT_WAKEUP) {
+                gs.wakeup();
+            }
+            
+            r = gs.httpGet(host, HTTP_URI, 0, &callback_http);
+            if (r >= 0) {
+                denki_percentage = (float)denki_usage / (float)denki_capacity * 100.0;
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+                pc.printf("%04d-%02d-%02d %02d:%02d :", year, month, day, hour, minute);
+                pc.printf(" %d MW / %d MW", denki_usage * 10, denki_capacity * 10);
+                pc.printf(" (%0.1f %%)\r\n", denki_percentage);
+                led2 = denki_percentage >= 70 ? (denki_percentage >= 77.5 ? 1 : 0.5) : 0;
+                led3 = denki_percentage >= 85 ? (denki_percentage >= 90 ? 1 : 0.5) : 0;
+                led4 = denki_percentage >= 95 ? (denki_percentage >= 97 ? 1 : 0.5) : 0;
+#elif defined(TARGET_LPC11U24)
+                led2 = denki_percentage >= 70 ? 1 : 0;
+                led3 = denki_percentage >= 85 ? 1 : 0;
+                led4 = denki_percentage >= 95 ? 1 : 0;
+#endif
+            } else {
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+                pc.printf("http error\r\n");
+#endif
+            }
+            flg = 0;
+            
+            gs.standby(180000);
+        }
+
+        count ++;
+        if (count > 4000) count = 0; // 10sec
+
+        if (count == 0) { // 0sec
+            writeled(denki_percentage * 100, 2, 0x0e);
+        } else
+        if (count == 2000) { // 5sec
+            writeled(get_temp() * 10, 3, 0x07);
+        }
+
+        if (count % 400 == 0) { // 0sec
+            led1 = 1;
+        } else
+        if (count % 400 == 40) { // 0.1sec
+            led1 = 0;
+        }
+
+        Sleep();
+    }
+}