GroupA / Mbed 2 deprecated Lab_6_WaG

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   mbed

Fork of WaG by GroupA

display.cpp@8:d8bc78bda829, 2018-02-22 (annotated)

Committer:
phn10
Date:
Thu Feb 22 03:10:01 2018 +0000
Revision:
8:d8bc78bda829
Parent:
7:161fe3793ddb
Child:
9:06c0d5737e5c
write function initial_setup() which set LED display to normal operation, spi frequency, and set all LED display numbers to 0.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phn10 7:161fe3793ddb 1 /******************************************************************************
phn10 7:161fe3793ddb 2 * EECS 397
phn10 7:161fe3793ddb 3 *
phn10 7:161fe3793ddb 4 * Assignment Name: Lab 4: display_test2
phn10 7:161fe3793ddb 5 *
phn10 7:161fe3793ddb 6 * Authors: Sam Morrison and Phong Nguyen
phn10 7:161fe3793ddb 7 * File name: display.cpp
phn10 7:161fe3793ddb 8 * Purpose: Contain function definitions
phn10 7:161fe3793ddb 9 *
phn10 7:161fe3793ddb 10 * Created: 02/21/2018
phn10 7:161fe3793ddb 11 * Last Modified: 02/21/2018
phn10 7:161fe3793ddb 12 *
phn10 7:161fe3793ddb 13 ******************************************************************************/
phn10 8:d8bc78bda829 14 #include "mbed.h"
phn10 8:d8bc78bda829 15 #include "io_pins.h"
phn10 8:d8bc78bda829 16 #include "display.h"
phn10 8:d8bc78bda829 17 #include <stdlib.h>
phn10 8:d8bc78bda829 18 #include <stdio.h>
phn10 8:d8bc78bda829 19 #include <string.h>
phn10 8:d8bc78bda829 20
phn10 8:d8bc78bda829 21 int bcd[4];
phn10 8:d8bc78bda829 22
phn10 8:d8bc78bda829 23
phn10 8:d8bc78bda829 24 /*
phn10 8:d8bc78bda829 25 * void initial_setup(DigitalOut SS, int data_length, int frequency);
phn10 8:d8bc78bda829 26 * Description: setup spi data length (in bit), spi frequency, set LED
phn10 8:d8bc78bda829 27 * display to normal operation, and set all display numbers
phn10 8:d8bc78bda829 28 * to 0.
phn10 8:d8bc78bda829 29 *
phn10 8:d8bc78bda829 30 * Inputs:
phn10 8:d8bc78bda829 31 * Parameters:
phn10 8:d8bc78bda829 32 * SPI spi: spi object
phn10 8:d8bc78bda829 33 * DigitalOut SS: chip select pin
phn10 8:d8bc78bda829 34 * int data_length: spi data length in bit
phn10 8:d8bc78bda829 35 * int frequency: frequency of SPI communication
phn10 8:d8bc78bda829 36 *
phn10 8:d8bc78bda829 37 * Outputs:
phn10 8:d8bc78bda829 38 * Returns: void
phn10 8:d8bc78bda829 39 */
phn10 8:d8bc78bda829 40 void initial_setup(DigitalOut SS, int data_length, int frequency) {
phn10 8:d8bc78bda829 41 SS = 1;
phn10 8:d8bc78bda829 42 spi.format(data_length, 0);
phn10 8:d8bc78bda829 43 spi.frequency(frequency);
phn10 8:d8bc78bda829 44
phn10 8:d8bc78bda829 45 SS = 0;
phn10 8:d8bc78bda829 46 spi.write(0x0C01); //normal operation
phn10 8:d8bc78bda829 47 SS = 1;
phn10 8:d8bc78bda829 48
phn10 8:d8bc78bda829 49 SS = 0;
phn10 8:d8bc78bda829 50 spi.write(0x090F); //decode to bits 0:3
phn10 8:d8bc78bda829 51 SS = 1;
phn10 8:d8bc78bda829 52
phn10 8:d8bc78bda829 53 SS = 0;
phn10 8:d8bc78bda829 54 spi.write(0x0F00); //set to normal mode
phn10 8:d8bc78bda829 55 SS = 1;
phn10 8:d8bc78bda829 56
phn10 8:d8bc78bda829 57 SS = 0;
phn10 8:d8bc78bda829 58 spi.write(0x0A0F); //intensity set to max
phn10 8:d8bc78bda829 59 SS = 1;
phn10 8:d8bc78bda829 60
phn10 8:d8bc78bda829 61 SS = 0;
phn10 8:d8bc78bda829 62 spi.write(0x0B04); //display digits 0:4
phn10 8:d8bc78bda829 63 SS = 1;
phn10 8:d8bc78bda829 64
phn10 8:d8bc78bda829 65 SS = 0;
phn10 8:d8bc78bda829 66 spi.write(0x0100); //set digit 1 to 0
phn10 8:d8bc78bda829 67 SS = 1;
phn10 8:d8bc78bda829 68
phn10 8:d8bc78bda829 69 SS = 0;
phn10 8:d8bc78bda829 70 spi.write(0x0200); //set digit 2 to 0
phn10 8:d8bc78bda829 71 SS = 1;
phn10 8:d8bc78bda829 72
phn10 8:d8bc78bda829 73 SS = 0;
phn10 8:d8bc78bda829 74 spi.write(0x0300); //set digit 3 to 0
phn10 8:d8bc78bda829 75 SS = 1;
phn10 8:d8bc78bda829 76
phn10 8:d8bc78bda829 77 SS = 0;
phn10 8:d8bc78bda829 78 spi.write(0x0400); //set digit 4 to 0
phn10 8:d8bc78bda829 79 SS = 1;
phn10 8:d8bc78bda829 80
phn10 8:d8bc78bda829 81 SS = 0;
phn10 8:d8bc78bda829 82 spi.write(0x0500); //set digit 5 to 0
phn10 8:d8bc78bda829 83 SS = 1;
phn10 8:d8bc78bda829 84 }
phn10 8:d8bc78bda829 85
phn10 8:d8bc78bda829 86 /*
phn10 8:d8bc78bda829 87 * void mod_bcd(int num);
phn10 8:d8bc78bda829 88 * Description:
phn10 8:d8bc78bda829 89 *
phn10 8:d8bc78bda829 90 * Inputs:
phn10 8:d8bc78bda829 91 * Parameters:
phn10 8:d8bc78bda829 92 * int num:
phn10 8:d8bc78bda829 93 * Globals:
phn10 8:d8bc78bda829 94 *
phn10 8:d8bc78bda829 95 * Outputs:
phn10 8:d8bc78bda829 96 * Parameters:
phn10 8:d8bc78bda829 97 * Globals:
phn10 8:d8bc78bda829 98 * Returns: void
phn10 8:d8bc78bda829 99 */
phn10 7:161fe3793ddb 100 void mod_bcd(int num) {
phn10 7:161fe3793ddb 101 int size = 4;
phn10 7:161fe3793ddb 102 int dec_arr[size];
phn10 7:161fe3793ddb 103 int place = 0;
phn10 7:161fe3793ddb 104 while (num != 0) { //converts decimal input to decimal array using %mod
phn10 7:161fe3793ddb 105 int val = num % 10;
phn10 7:161fe3793ddb 106 dec_arr[place] = val;
phn10 7:161fe3793ddb 107 num = num/10;
phn10 7:161fe3793ddb 108 place++;
phn10 7:161fe3793ddb 109 }
phn10 7:161fe3793ddb 110 for (int i = 0; i < size; i++) { //converts decimal array to binary array
phn10 7:161fe3793ddb 111 bcd[i] = convert(dec_arr[i]);
phn10 7:161fe3793ddb 112 }
phn10 7:161fe3793ddb 113 }
phn10 7:161fe3793ddb 114
phn10 8:d8bc78bda829 115 /*
phn10 8:d8bc78bda829 116 * int convert(int dec);
phn10 8:d8bc78bda829 117 * Description:
phn10 8:d8bc78bda829 118 *
phn10 8:d8bc78bda829 119 * Inputs:
phn10 8:d8bc78bda829 120 * Parameters:
phn10 8:d8bc78bda829 121 * int dec:
phn10 8:d8bc78bda829 122 * Globals:
phn10 8:d8bc78bda829 123 *
phn10 8:d8bc78bda829 124 * Outputs:
phn10 8:d8bc78bda829 125 * Parameters:
phn10 8:d8bc78bda829 126 * Globals:
phn10 8:d8bc78bda829 127 * Returns: void
phn10 8:d8bc78bda829 128 */
phn10 7:161fe3793ddb 129 int convert(int dec) {//convert decimal to binary
phn10 7:161fe3793ddb 130 if (dec == 0) //function complete
phn10 7:161fe3793ddb 131 return 0;
phn10 7:161fe3793ddb 132 else //recursive call until converted
phn10 7:161fe3793ddb 133 return (dec % 2 + 10 * convert(dec / 2));
phn10 7:161fe3793ddb 134 }
phn10 7:161fe3793ddb 135
phn10 8:d8bc78bda829 136 /*
phn10 8:d8bc78bda829 137 * char to_command(char input, int place);
phn10 8:d8bc78bda829 138 * Description:
phn10 8:d8bc78bda829 139 *
phn10 8:d8bc78bda829 140 * Inputs:
phn10 8:d8bc78bda829 141 * Parameters:
phn10 8:d8bc78bda829 142 * char input:
phn10 8:d8bc78bda829 143 * int place:
phn10 8:d8bc78bda829 144 * Globals:
phn10 8:d8bc78bda829 145 *
phn10 8:d8bc78bda829 146 * Outputs:
phn10 8:d8bc78bda829 147 * Parameters:
phn10 8:d8bc78bda829 148 * Globals:
phn10 8:d8bc78bda829 149 * Returns: char
phn10 8:d8bc78bda829 150 */
phn10 7:161fe3793ddb 151 char to_command(char input, int place) {
phn10 8:d8bc78bda829 152 return 'a';
phn10 7:161fe3793ddb 153 }