Diff: display.cpp

Revision:

8:d8bc78bda829

Parent:

7:161fe3793ddb

Child:

9:06c0d5737e5c

--- a/display.cpp	Thu Feb 22 02:06:07 2018 +0000
+++ b/display.cpp	Thu Feb 22 03:10:01 2018 +0000
@@ -11,6 +11,92 @@
 * Last Modified: 02/21/2018
 *
 ******************************************************************************/
+#include "mbed.h"
+#include "io_pins.h"
+#include "display.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+int bcd[4];
+
+
+/*
+ * void initial_setup(DigitalOut SS, int data_length, int frequency);
+ * Description: setup spi data length (in bit), spi frequency, set LED 
+ *              display to normal operation, and set all display numbers
+ *              to 0.
+ * 
+ * Inputs: 
+ *      Parameters:
+ *          SPI spi: spi object 
+ *          DigitalOut SS: chip select pin
+ *          int data_length: spi data length in bit
+ *          int frequency: frequency of SPI communication
+ *      
+ * Outputs:
+ *      Returns: void
+*/
+void initial_setup(DigitalOut SS, int data_length, int frequency) {
+    SS = 1; 
+    spi.format(data_length, 0);
+    spi.frequency(frequency);
+    
+    SS = 0;
+    spi.write(0x0C01); //normal operation
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x090F); //decode to bits 0:3
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0F00); //set to normal mode
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0A0F); //intensity set to max
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0B04); //display digits 0:4
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0100); //set digit 1 to 0
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0200); //set digit 2 to 0
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0300); //set digit 3 to 0
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0400); //set digit 4 to 0
+    SS = 1;
+    
+    SS = 0;
+    spi.write(0x0500); //set digit 5 to 0
+    SS = 1;
+}
+
+/*
+ * void mod_bcd(int num);
+ * Description: 
+ *
+ * Inputs: 
+ *      Parameters:
+ *          int num: 
+ *      Globals:
+ *      
+ * Outputs:
+ *      Parameters:
+ *      Globals:
+ *      Returns: void
+*/
 void mod_bcd(int num) {
     int size = 4;
     int dec_arr[size];
@@ -26,6 +112,20 @@
     }
 }
 
+/*
+ * int convert(int dec);
+ * Description: 
+ *
+ * Inputs: 
+ *      Parameters:
+ *          int dec: 
+ *      Globals:
+ *      
+ * Outputs:
+ *      Parameters:
+ *      Globals:
+ *      Returns: void
+*/
 int convert(int dec) {//convert decimal to binary
     if (dec == 0) //function complete
         return 0; 
@@ -33,6 +133,21 @@
         return (dec % 2 + 10 * convert(dec / 2)); 
 }
 
+/*
+ * char to_command(char input, int place);
+ * Description: 
+ *
+ * Inputs: 
+ *      Parameters:
+ *          char input:
+ *          int place: 
+ *      Globals:
+ *      
+ * Outputs:
+ *      Parameters:
+ *      Globals:
+ *      Returns: char
+*/
 char to_command(char input, int place) {
-    
+    return 'a';
 }
\ No newline at end of file