Diff: main.cpp

Revision:

4:c1438ffd88dd

Parent:

3:043e5e06f325

Child:

5:1d817b3c42f1

--- a/main.cpp	Thu Jul 11 09:03:23 2019 +0000
+++ b/main.cpp	Thu Jul 11 09:29:11 2019 +0000
@@ -1,26 +1,42 @@
 #include "mbed.h"
+#include "TextLCD.h"
+#define VMAX 0.36f
+#define VMIN 0.05f
 
-CAN     can1(PB_8, PB_9); 
+
 Serial  pc(USBTX, USBRX, 115200);
-AnalogIn   res(PA_0);
 
 Ticker  ticker1;
 
+CAN     can1(PB_8, PB_9); 
 CANMessage  can_msg_1;
 CANMessage  can_msg_send;
-char    data_msg[3] = {0x11,0x22,0x33};
+char data_msg[3] = {0x11,0x22,0x33};
+
+
 bool armed = false;
+AnalogIn   res(PA_0);
+float volt = 0;
 
 
+I2C i2c_lcd(PB_7,PB_6); // SDA, SCL
+TextLCD_I2C lcd(&i2c_lcd, 0x7E, TextLCD::LCD16x2); // I2C bus, PCF8574 Slaveaddress, LCD Type
+
+const char fill[] = {0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00};
+const char empty[] = {0x1F, 0x11, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x00};
+
+
+void showBar(void);
 
 void CAN_RX1(void);
 
 void sendCMD(void)
 {
-    //if(armed)
-    
-    can_msg_send = CANMessage(0x111,data_msg,3,CANData,CANStandard);
-    can1.write(can_msg_send); 
+    if(armed)
+    {
+        can_msg_send = CANMessage(0x111,data_msg,3,CANData,CANStandard);
+        can1.write(can_msg_send); 
+    }
     
     //printf("res: %f\n", res.read());
 }
@@ -28,22 +44,23 @@
 int main()
 {
 
-
-    can1.attach(&CAN_RX1, CAN::RxIrq);              //CAN1 Recieve Irq
-    ticker1.attach(&sendCMD, 1);           //1sec
+    can1.frequency(500000);
+    can1.attach(&CAN_RX1, CAN::RxIrq);
+    ticker1.attach(&sendCMD, 1);
     pc.printf("start\n");
 
-    can1.frequency(500000);
+    
+    
+    lcd.setCursor(TextLCD::CurOff_BlkOff);
+    lcd.setBacklight(TextLCD::LightOn); 
+    lcd.setUDC(0, (char *) fill);
+    lcd.setUDC(1, (char *) empty);
+    pc.printf("set done\n\r");
+    
     while(1)
-    {
-        
-        /*if(can1.read(can_msg_1)) 
-        {
-            printf("Message received: %d\n", can_msg_1.data[1]);
-        }
-        */
-        
-        
+    {   
+        volt = res.read();
+        showBar();
     }
 
 }
@@ -58,3 +75,24 @@
 
     }
 }
+
+void showBar(void)
+{
+    int bars = 16 * (volt-VMIN)/(VMAX-VMIN);    
+    if (bars > 16)
+        bars = 16;
+    else if( bars < 0 )
+        bars = 0; 
+        
+        
+    for(int i = 0; i<bars ;i++)
+    {
+        lcd.locate(i,0);
+        lcd.putc(0);    
+    }
+    for(int i = bars; i<16 ;i++)
+    {
+        lcd.locate(i,0);
+        lcd.putc(1);    
+    }
+}