GroupA / Mbed 2 deprecated Lab_6_WaG

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Dependencies:   mbed

Fork of WaG by GroupA

display.cpp@39:abf211b17e3c, 2018-03-23 (annotated)

Committer:
spm71
Date:
Fri Mar 23 20:16:24 2018 +0000
Revision:
39:abf211b17e3c
Parent:
32:0dc2b4a3eee6
Child:
42:6cba679a4ee4
Finished LED test

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 *
spm71 18:0e281922212c 4 * Assignment Name: Lab 5: WaG
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 *
spm71 18:0e281922212c 10 * Created: 03/01/2018
spm71 22:09dd6977576b 11 * Last Modified: 03/08/2018
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>
spm71 18:0e281922212c 20 #include "spi.h"
spm71 23:3da1d39c1ae9 21 #include "utility.h"
phn10 8:d8bc78bda829 22
spm71 14:be27f6e21a8a 23 //#define VERSION1
spm71 14:be27f6e21a8a 24 #define VERSION2
spm71 10:ae0a262ba48d 25
spm71 18:0e281922212c 26 extern SPI wag_spi;
spm71 18:0e281922212c 27 extern spi_cfg as1107;
spm71 39:abf211b17e3c 28 extern Serial pc;
phn10 8:d8bc78bda829 29
phn10 8:d8bc78bda829 30 /*
spm71 22:09dd6977576b 31 * void initial_setup(struct spi_cfg spi_obj);
phn10 8:d8bc78bda829 32 * Description: setup spi data length (in bit), spi frequency, set LED
phn10 8:d8bc78bda829 33 * display to normal operation, and set all display numbers
phn10 8:d8bc78bda829 34 * to 0.
phn10 8:d8bc78bda829 35 *
phn10 8:d8bc78bda829 36 * Inputs:
phn10 8:d8bc78bda829 37 * Parameters:
spm71 22:09dd6977576b 38 * struct spi_cfg spi_obj: spi_cfg object
phn10 8:d8bc78bda829 39 *
phn10 8:d8bc78bda829 40 * Outputs:
phn10 8:d8bc78bda829 41 * Returns: void
phn10 8:d8bc78bda829 42 */
spm71 20:d23bcd97f2c5 43 void initial_setup(struct spi_cfg spi_obj) {
spm71 20:d23bcd97f2c5 44 spi_obj.spi_ncs = 1;
phn10 8:d8bc78bda829 45
spm71 20:d23bcd97f2c5 46 spi_send(spi_obj, 0x0C01);
spm71 20:d23bcd97f2c5 47 spi_send(spi_obj, 0x090F);
spm71 20:d23bcd97f2c5 48 spi_send(spi_obj, 0x0F00);
spm71 20:d23bcd97f2c5 49 spi_send(spi_obj, 0x0A0F);
spm71 20:d23bcd97f2c5 50 spi_send(spi_obj, 0x0B04);
spm71 20:d23bcd97f2c5 51 spi_send(spi_obj, 0x0100);
spm71 20:d23bcd97f2c5 52 spi_send(spi_obj, 0x0200);
spm71 20:d23bcd97f2c5 53 spi_send(spi_obj, 0x0300);
spm71 20:d23bcd97f2c5 54 spi_send(spi_obj, 0x0400);
spm71 20:d23bcd97f2c5 55 spi_send(spi_obj, 0x0500);
phn10 8:d8bc78bda829 56 }
phn10 8:d8bc78bda829 57
spm71 10:ae0a262ba48d 58
spm71 23:3da1d39c1ae9 59
spm71 23:3da1d39c1ae9 60
spm71 10:ae0a262ba48d 61 #ifdef VERSION1
phn10 8:d8bc78bda829 62 /*
spm71 10:ae0a262ba48d 63 * void bin2bcd_array(int num);
spm71 13:8936b2f64aa2 64 * Description: Converts to BCD array using modulo method.
phn10 8:d8bc78bda829 65 *
phn10 8:d8bc78bda829 66 * Inputs:
phn10 8:d8bc78bda829 67 * Parameters:
spm71 13:8936b2f64aa2 68 * int num: number to push to display
spm71 13:8936b2f64aa2 69 char bcd[]: BCD array that will be written to
phn10 8:d8bc78bda829 70 * Globals:
phn10 8:d8bc78bda829 71 *
phn10 8:d8bc78bda829 72 * Outputs:
phn10 8:d8bc78bda829 73 * Returns: void
phn10 8:d8bc78bda829 74 */
spm71 10:ae0a262ba48d 75 void bin2bcd_array(int num, char bcd[]) {
spm71 13:8936b2f64aa2 76 int place = 0;
phn10 7:161fe3793ddb 77 while (num != 0) { //converts decimal input to decimal array using %mod
phn10 7:161fe3793ddb 78 int val = num % 10;
spm71 12:a947a6609a23 79 bcd[place] = val;
phn10 7:161fe3793ddb 80 num = num/10;
spm71 13:8936b2f64aa2 81 place++;
phn10 7:161fe3793ddb 82 }
phn10 7:161fe3793ddb 83 }
spm71 10:ae0a262ba48d 84 #endif
phn10 7:161fe3793ddb 85
spm71 10:ae0a262ba48d 86 #ifdef VERSION2
phn10 8:d8bc78bda829 87 /*
phn10 9:06c0d5737e5c 88 * void bin2bcd_array(int num);
phn10 9:06c0d5737e5c 89 * Description: converts a number from binary format to binary coded
phn10 9:06c0d5737e5c 90 * decimal array using sprintf() method
phn10 9:06c0d5737e5c 91 *
phn10 9:06c0d5737e5c 92 * Inputs:
phn10 9:06c0d5737e5c 93 * Parameters:
phn10 9:06c0d5737e5c 94 * int num: number in binary format
phn10 15:100321eb2aac 95 * char bcd[]: bcd (binary coded decimal) array
phn10 9:06c0d5737e5c 96 *
phn10 9:06c0d5737e5c 97 * Outputs:
phn10 9:06c0d5737e5c 98 * Returns: void
phn10 9:06c0d5737e5c 99 */
spm71 10:ae0a262ba48d 100 void bin2bcd_array(int num, char bcd[]) {
phn10 9:06c0d5737e5c 101 char tmp_array[4];
phn10 11:6751b9406142 102 char reverse_bcd[4];
phn10 11:6751b9406142 103 int last_index = 0;
phn10 9:06c0d5737e5c 104 int i = 0;
phn10 11:6751b9406142 105
phn10 11:6751b9406142 106 sprintf(tmp_array, "%d", num);
phn10 11:6751b9406142 107 for (i = 0; i < 4; i++) {
phn10 11:6751b9406142 108 bcd[i] = 0;
phn10 11:6751b9406142 109 reverse_bcd[i] = 0;
phn10 11:6751b9406142 110 }
phn10 11:6751b9406142 111
phn10 11:6751b9406142 112 while (last_index < 4 and tmp_array[last_index] != '\0') {
phn10 11:6751b9406142 113 reverse_bcd[last_index] = tmp_array[last_index] - '0';
phn10 11:6751b9406142 114 last_index++;
phn10 11:6751b9406142 115 }
phn10 11:6751b9406142 116
phn10 11:6751b9406142 117 // reverse the order to fit binary coded decimal
phn10 11:6751b9406142 118 for (i = 0; i < last_index; i++) {
phn10 11:6751b9406142 119 bcd[i] = reverse_bcd[last_index - 1 - i];
phn10 9:06c0d5737e5c 120 }
phn10 9:06c0d5737e5c 121 }
spm71 10:ae0a262ba48d 122 #endif
phn10 9:06c0d5737e5c 123
phn10 15:100321eb2aac 124 /*
phn10 15:100321eb2aac 125 * void send_command_to_display(char bcd[]);
phn10 15:100321eb2aac 126 * Description: send bcd[] array to the display driver to display number
phn10 15:100321eb2aac 127 * in the display
phn10 15:100321eb2aac 128 *
phn10 15:100321eb2aac 129 * Inputs:
phn10 15:100321eb2aac 130 * Parameters:
phn10 15:100321eb2aac 131 * char bcd[]: bcd (binary coded decimal) array
phn10 15:100321eb2aac 132 *
phn10 15:100321eb2aac 133 * Outputs:
phn10 15:100321eb2aac 134 * Returns: void
phn10 15:100321eb2aac 135 */
phn10 11:6751b9406142 136 void send_command_to_display(char bcd[]) {
phn10 11:6751b9406142 137 int command;
phn10 11:6751b9406142 138
phn10 11:6751b9406142 139
phn10 11:6751b9406142 140 for (int i = 1; i <= 4; i++) {
phn10 11:6751b9406142 141 command = 0;
phn10 11:6751b9406142 142 // command has following form: 0x0[place]0[value]
phn10 11:6751b9406142 143 // the value converted to int is 16 * 16 * place + value
phn10 11:6751b9406142 144 command = 16 * 16 * i + bcd[i - 1];
spm71 18:0e281922212c 145 spi_send(as1107, command);
phn10 11:6751b9406142 146 }
spm71 23:3da1d39c1ae9 147 }
spm71 23:3da1d39c1ae9 148
spm71 23:3da1d39c1ae9 149 /*
spm71 23:3da1d39c1ae9 150 * void test_target_leds();
spm71 23:3da1d39c1ae9 151 * Description: test each LED on the target board
spm71 23:3da1d39c1ae9 152 *
spm71 23:3da1d39c1ae9 153 * Inputs:
spm71 23:3da1d39c1ae9 154 * None
spm71 23:3da1d39c1ae9 155 *
spm71 23:3da1d39c1ae9 156 * Outputs:
spm71 23:3da1d39c1ae9 157 * Returns: void
spm71 23:3da1d39c1ae9 158 */
spm71 23:3da1d39c1ae9 159 void test_target_leds() {
spm71 32:0dc2b4a3eee6 160 int led_command = 0;
spm71 39:abf211b17e3c 161 while (uti_chk_ubutton() == 0);
spm71 39:abf211b17e3c 162 pc.printf("test begin\n");
spm71 39:abf211b17e3c 163 while (uti_chk_ubutton() == 0) {
spm71 39:abf211b17e3c 164 for (int i = 1; i <= 128; i = i * 2) {
spm71 32:0dc2b4a3eee6 165 led_command = 0x0500 + i;
spm71 32:0dc2b4a3eee6 166 spi_send(as1107, led_command); //light up LED[i]
spm71 23:3da1d39c1ae9 167 wait(0.1);
spm71 32:0dc2b4a3eee6 168 spi_send(as1107, 0x0500); //turn off LED[i]
spm71 23:3da1d39c1ae9 169 }
spm71 23:3da1d39c1ae9 170 }
spm71 39:abf211b17e3c 171 }