Revision 3:18ef2e771565, committed 2014-08-02

Comitter:

josmy

Date:

Sat Aug 02 07:47:48 2014 +0000

Parent:

2:ad0b044d0a10

Commit message:

Analog Multiplexer using USART, SPI and LCD interfacing

Changed in this revision

--- a/TextLCD.lib	Sat Dec 04 11:31:07 2010 +0000
+++ b/TextLCD.lib	Sat Aug 02 07:47:48 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/simon/code/TextLCD/#e4cb7ddee0d3
+http://mbed.org/users/simon/code/TextLCD/#308d188a2d3a

--- a/main.cpp	Sat Dec 04 11:31:07 2010 +0000
+++ b/main.cpp	Sat Aug 02 07:47:48 2014 +0000
@@ -1,10 +1,140 @@
-// Hello World! for the TextLCD
+//Started USART, LCD Interfacing
+//Inerfaced SPI and tested for top and bottom boards
+//Keypress and Serial communication tested
 
 #include "mbed.h"
 #include "TextLCD.h"
+#include "string.h"
+#include "stdio.h"
 
-TextLCD lcd(p15, p16, p17, p18, p19, p20); // rs, e, d4-d7
+TextLCD lcd(PA_10, PB_3, PB_5, PB_4, PB_8, PA_8); // rs, e, d4-d7
+
+Serial pc(PB_10, PB_11);//TX = PB_10 RX = PB_11 
+DigitalIn upbutton(USER_BUTTON);//PC_13 = upkey 
+DigitalIn downbutton(PB_9);//D14 = downkey
+DigitalOut myled(PA_5);
+
+char SerialAvailable = 0;
+char buf[10];
+char buffer[16];
+unsigned incomingByte = 0;
+unsigned pointer = 0;
+unsigned char  ch00,ch01,ch02,ch03,ch04;
+int RelaySelected;
+
+SPI SPIDevice(SPI_MOSI, SPI_MISO, SPI_SCK);//mosi=PA_7, miso=PA_6, sck=PA5
+DigitalOut OE(PA_9);//D8=OE
+DigitalOut RCK595(PC_7);//D9=RCK595
+
+
+
+
+void RelaySelectFunction( ){
+unsigned uword;
+    
+    switch(RelaySelected){
+        case 1:uword = 0x0080;lcd.locate(0,1);lcd.printf("CH1      ");break; 
+        case 2:uword = 0x0040;lcd.locate(0,1);lcd.printf("CH2      ");break; 
+        case 3:uword = 0x0020;lcd.locate(0,1);lcd.printf("CH3      ");break; 
+        case 4:uword = 0x0010;lcd.locate(0,1);lcd.printf("CH4      ");break; 
+        case 5:uword = 0x0008;lcd.locate(0,1);lcd.printf("CH5      ");break; 
+        case 6:uword = 0x0004;lcd.locate(0,1);lcd.printf("CH6      ");break; 
+        case 7:uword = 0x0002;lcd.locate(0,1);lcd.printf("CH7      ");break; 
+        case 8:uword = 0x0001;lcd.locate(0,1);lcd.printf("CH8      ");break; 
+        case 9:uword = 0x8000;lcd.locate(0,1);lcd.printf("CH9      ");break; 
+        case 10:uword = 0x4000;lcd.locate(0,1);lcd.printf("CH10      ");break; 
+        case 11:uword = 0x2000;lcd.locate(0,1);lcd.printf("CH11      ");break; 
+        case 12:uword = 0x1000;lcd.locate(0,1);lcd.printf("CH12      ");break; 
+        case 13:uword = 0x0800;lcd.locate(0,1);lcd.printf("CH13      ");break; 
+        case 14:uword = 0x0400;lcd.locate(0,1);lcd.printf("CH14      ");break; 
+        case 15:uword = 0x0200;lcd.locate(0,1);lcd.printf("CH15      ");break; 
+        case 16:uword = 0x0100;lcd.locate(0,1);lcd.printf("CH16      ");break; 
+        default: uword = 0x0000;lcd.locate(0,1);lcd.printf("No CH      ");break; 
+        }
+    RCK595 = 0;SPIDevice.write(uword); wait_ms(2);RCK595 = 1;
+    wait_ms(200);
+} 
+ 
+void SerialCom(){
+
+
+    if(pc.readable()){
+        buffer[0] = buffer[1];
+        buffer[1] = buffer[2];
+        buffer[2] = buffer[3];
+        buffer[3] = buffer[4];
+        buffer[4] = buffer[5];
+        buffer[5] = pc.getc();
 
-int main() {
-    lcd.printf("Hello World!\n");
+        if((buffer[0] == 'A') && (buffer[5] == 'B')){
+            SerialAvailable = 1;
+        }
+    }    
 }
+
+void Keypress(){
+    
+    if(upbutton == 0){     
+        RelaySelected++;
+        if(RelaySelected > 16)RelaySelected = 1;
+        RelaySelectFunction();
+        pc.printf("Relay:%u\n", RelaySelected);
+        wait_ms(50);
+    }
+    if(downbutton == 0){      
+        RelaySelected--; 
+        if(RelaySelected < 1)RelaySelected = 16;
+        RelaySelectFunction();
+        pc.printf("Relay:%u\n", RelaySelected);
+        wait_ms(50);
+    }
+}   
+void SerialFunction(){
+int i;
+    i = buffer[2];
+    switch(i){
+    case 48:RelaySelected=1;break;
+    case 49:RelaySelected=2;break;
+    case 50:RelaySelected=3;break;
+    case 51:RelaySelected=4;break;
+    case 52:RelaySelected=5;break;
+    case 53:RelaySelected=6;break;
+    case 54:RelaySelected=7;break;
+    case 55:RelaySelected=8;break;
+    case 56:RelaySelected=9;break;
+    case 57:RelaySelected=10;break;
+    
+    case 65:RelaySelected=11;break;
+    case 66:RelaySelected=12;break;
+    case 67:RelaySelected=13;break;
+    case 68:RelaySelected=14;break;
+    case 69:RelaySelected=15;break;
+    case 70:RelaySelected=16;break;
+    default:RelaySelected=1;break;
+    }
+    RelaySelectFunction();
+    SerialAvailable = 0;
+
+}
+int main() { 
+    
+    OE = 1; // Deselect device
+    RCK595 = 1; // Deselect device
+    SPIDevice.format(16,3);        // Setup:  bit data, high steady state clock, 2nd edge capture
+    SPIDevice.frequency(400000); //400kHz
+    SPIDevice.write(0x0000);
+    
+    pc.printf("Analog Multiplexer\n");    
+    lcd.printf("Analog Multiplexer");
+    OE = 0;
+    downbutton.mode(PullUp);
+    lcd.locate(0,1);lcd.printf("      ");
+    RelaySelected = 1;
+    RelaySelectFunction();
+    pc.attach(&SerialCom);
+    while(1){
+        Keypress();
+        if(SerialAvailable==1)
+            SerialFunction();
+    }    
+}

--- a/mbed.bld	Sat Dec 04 11:31:07 2010 +0000
+++ b/mbed.bld	Sat Aug 02 07:47:48 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e
+http://mbed.org/users/mbed_official/code/mbed/builds/04dd9b1680ae
\ No newline at end of file