Diff: display.cpp

Revision:

0:bdb53686c194

Child:

1:6c7141895545

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/display.cpp	Mon Jul 04 15:16:45 2011 +0000
@@ -0,0 +1,89 @@
+#include "mbed.h"
+#include "weather.h"
+#ifdef USE_DISPLAY
+#include "I2CLEDDisp.h"
+#include "I2CLCD.h"
+
+static I2CLEDDisp *leddisp;
+static I2CLCD *lcd;
+static volatile int lcd_flg = 0, leddisp_flg = 0;
+static volatile int leddisp_freq = 0, leddisp_pos = -4;
+static char leddisp_buf[150];
+#endif
+
+void update_display () {
+#ifdef USE_DISPLAY
+    char buf[128], tmp[128];
+
+    if (leddisp_flg && cfg.getValue("LEDDISP_MESG", tmp, sizeof(tmp))) {
+        format_str(tmp, leddisp_buf, sizeof(leddisp_buf));
+    }
+
+    if (lcd_flg && cfg.getValue("LCD_MESG", tmp, sizeof(tmp))) {
+        format_str(tmp, buf, sizeof(buf));
+        lcd->cls();
+        lcd->puts(buf);
+    }
+#endif
+}
+
+void pool_display () {
+#ifdef USE_DISPLAY
+    int i, addr, len;
+
+    // LED Display scroll
+    if (leddisp_flg) {
+        leddisp_freq ++;
+        if (leddisp_freq > LED_FREQ) {
+
+            len = strlen(leddisp_buf);
+            leddisp->locate(0, 0);
+            for (i = 0; i < 4; i ++) {
+                addr = leddisp_pos + i;
+                if (addr >= 0 && addr < len) {
+                    leddisp->putc(leddisp_buf[addr]);
+                } else {
+                    leddisp->putc(' ');
+                }
+            }
+
+            leddisp_pos ++;
+            if (leddisp_pos >= len + 4) {
+                leddisp_pos = -4;
+            }
+
+            leddisp_freq = 0;
+        }
+    }
+#endif
+}
+
+int init_display () {
+#ifdef USE_DISPLAY
+    char buf[128];
+    enum I2CLCDType lcdtype = LCD16x2;
+    enum I2CLCDConfig lcdconf = LCDCFG_3V;
+
+    if (cfg.getValue("LCD_MESG", buf, sizeof(buf))) {
+        if (cfg.getValue("LCD_TYPE", buf, sizeof(buf))) {
+            lcdtype = (enum I2CLCDType)atoi(buf);
+        }
+        if (cfg.getValue("LCD_CONF", buf, sizeof(buf))) {
+            lcdconf = (enum I2CLCDConfig)atoi(buf);
+        }
+        lcd = new I2CLCD(i2c, I2CLCD_ADDR, lcdtype, lcdconf);
+        if (lcd == NULL) return -1;
+        lcd_flg = 1;
+
+        strncpy(leddisp_buf, VERSION, sizeof(leddisp_buf));
+    }
+
+    if (cfg.getValue("LEDDISP_MESG", buf, sizeof(buf))) {
+        leddisp = new I2CLEDDisp(i2c);
+        if (leddisp == NULL) return -1;
+        leddisp_flg = 1;
+    }
+
+#endif
+    return 0;
+}