Josmy Bar
Analog Multiplexer using USART SPI, LCD interfacing
Fork of
TextLCD_HelloWorld
by 
Simon Ford
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