ELEC350 CW TEAM / Mbed OS ELEC350-CWTEMPLATE-2017

test to establish how we can share the project on MBED

Dependencies:   BME280 BMP280 ELEC350-Coursework-2017 TextLCD

Fork of ELEC350-CWTEMPLATE-2017 by University of Plymouth - Stages 1, 2 and 3

serial_protocol/serial_protocol.cpp@13:aa200749dba6, 2017-12-15 (annotated)

Committer:
bdarling
Date:
Fri Dec 15 16:13:06 2017 +0000
Revision:
13:aa200749dba6
Parent:
12:4af6b1d09c90 
Modified serial_protocol.cpp and hpp. Added several global variables. Variables are now only changed if value is valid.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bdarling 13:aa200749dba6 1 /*This module enables a user to communicate with the system using a serial
bdarling 13:aa200749dba6 2 connection, commands can be sent using a terminal emulator
bdarling 13:aa200749dba6 3 */
bdarling 6:c7220f7c1ae0 4 #include "serial_protocol.hpp"
bdarling 6:c7220f7c1ae0 5 #include "sample_hardware.hpp"
bdarling 6:c7220f7c1ae0 6 #include <string>
bdarling 8:e3aff00ef600 7 #include <ctype.h>
bdarling 13:aa200749dba6 8
bdarling 13:aa200749dba6 9 #define SETT_UPPER_BOUND 60.0f //upper bound for sampling period
bdarling 13:aa200749dba6 10 #define SETT_LOWER_BOUND 0.1f //lower bound for sampling period
bdarling 13:aa200749dba6 11
bdarling 13:aa200749dba6 12
bdarling 6:c7220f7c1ae0 13 Serial pc(SERIAL_TX, SERIAL_RX);
bdarling 6:c7220f7c1ae0 14
bdarling 6:c7220f7c1ae0 15
bdarling 13:aa200749dba6 16 char string1[32];
bdarling 13:aa200749dba6 17 char string2[32];
bdarling 6:c7220f7c1ae0 18
bdarling 6:c7220f7c1ae0 19 char dayStr[3];
bdarling 6:c7220f7c1ae0 20 char monthStr[3];
bdarling 6:c7220f7c1ae0 21 char yearStr[5];
bdarling 9:6fb498cf6156 22 char hourStr[3];
bdarling 9:6fb498cf6156 23 char minuteStr[3];
bdarling 9:6fb498cf6156 24 char secondStr[3];
bdarling 6:c7220f7c1ae0 25 int day;
bdarling 6:c7220f7c1ae0 26 int month;
bdarling 6:c7220f7c1ae0 27 int year;
bdarling 13:aa200749dba6 28 int readSamples=0;
bdarling 13:aa200749dba6 29 int deleteSamples=0;
bdarling 13:aa200749dba6 30 float sampleRate=0;
bdarling 6:c7220f7c1ae0 31
bdarling 6:c7220f7c1ae0 32
bdarling 13:aa200749dba6 33 //reads serial keyboard input from pc
bdarling 6:c7220f7c1ae0 34 void getData(){
bdarling 6:c7220f7c1ae0 35 pc.scanf("%s %s", string1, string2);
bdarling 8:e3aff00ef600 36 //pc.printf("%s %s\n",string1, string2); \\for debugging
bdarling 6:c7220f7c1ae0 37 }
bdarling 6:c7220f7c1ae0 38
bdarling 13:aa200749dba6 39 //compares strings received from getData function against available commands
bdarling 13:aa200749dba6 40 //can alter global variables
bdarling 6:c7220f7c1ae0 41 void readSerial(){
bdarling 6:c7220f7c1ae0 42 if((strcmp(string1,"READ")==0) && (strcmp(string2,"ALL")==0)){
bdarling 6:c7220f7c1ae0 43 pc.printf("reading all\n");
bdarling 6:c7220f7c1ae0 44 }
bdarling 6:c7220f7c1ae0 45
bdarling 6:c7220f7c1ae0 46 else if((strcmp(string1,"DELETE")==0) && (strcmp(string2,"ALL")==0)){
bdarling 6:c7220f7c1ae0 47 pc.printf("deleting all\n");
bdarling 6:c7220f7c1ae0 48 }
bdarling 6:c7220f7c1ae0 49
bdarling 6:c7220f7c1ae0 50 else if(strcmp(string1,"READ")==0){
bdarling 13:aa200749dba6 51 int num=0;
bdarling 13:aa200749dba6 52 sscanf(string2,"%d",&num);
bdarling 10:47e6166f0797 53
bdarling 13:aa200749dba6 54 if(num>0){
bdarling 13:aa200749dba6 55 readSamples = num;
bdarling 13:aa200749dba6 56 pc.printf("reading <%d>\n",readSamples);
bdarling 6:c7220f7c1ae0 57 }
bdarling 6:c7220f7c1ae0 58 else{
bdarling 10:47e6166f0797 59 pc.printf("invalid value\n");
bdarling 10:47e6166f0797 60 }
bdarling 6:c7220f7c1ae0 61 }
bdarling 6:c7220f7c1ae0 62
bdarling 11:573cf2feced3 63 else if(strcmp(string1,"STATE")==0){
bdarling 11:573cf2feced3 64 if(strcmp(string2,"ON")==0){
bdarling 11:573cf2feced3 65 pc.printf("SAMPLING ON\n");
bdarling 11:573cf2feced3 66 }
bdarling 11:573cf2feced3 67 else if(strcmp(string2,"OFF")==0){
bdarling 11:573cf2feced3 68 pc.printf("SAMPLING OFF\n");
bdarling 11:573cf2feced3 69 }
bdarling 11:573cf2feced3 70 else{
bdarling 11:573cf2feced3 71 pc.printf("INVALID COMMAND\n");
bdarling 11:573cf2feced3 72 }
bdarling 11:573cf2feced3 73 }
bdarling 11:573cf2feced3 74
bdarling 12:4af6b1d09c90 75 else if(strcmp(string1,"LOGGING")==0){
bdarling 12:4af6b1d09c90 76 if(strcmp(string2,"ON")==0){
bdarling 12:4af6b1d09c90 77 pc.printf("LOGGING ON\n");
bdarling 12:4af6b1d09c90 78 }
bdarling 12:4af6b1d09c90 79 else if(strcmp(string2,"OFF")==0){
bdarling 12:4af6b1d09c90 80 pc.printf("LOGGING OFF\n");
bdarling 12:4af6b1d09c90 81 }
bdarling 12:4af6b1d09c90 82 else{
bdarling 12:4af6b1d09c90 83 pc.printf("INVALID COMMAND\n");
bdarling 12:4af6b1d09c90 84 }
bdarling 12:4af6b1d09c90 85 }
bdarling 12:4af6b1d09c90 86
bdarling 10:47e6166f0797 87 else if(strcmp(string1,"SETT")==0){
bdarling 10:47e6166f0797 88 float number=0;
bdarling 10:47e6166f0797 89 sscanf(string2,"%f",&number);
bdarling 13:aa200749dba6 90 if(number>=SETT_LOWER_BOUND && number<=SETT_UPPER_BOUND){
bdarling 13:aa200749dba6 91 sampleRate = number;
bdarling 13:aa200749dba6 92 pc.printf("sampling period set to %f\n",sampleRate);
bdarling 10:47e6166f0797 93 }
bdarling 10:47e6166f0797 94 else{
bdarling 10:47e6166f0797 95 pc.printf("invalid value\n");
bdarling 10:47e6166f0797 96 }
bdarling 10:47e6166f0797 97 }
bdarling 8:e3aff00ef600 98
bdarling 6:c7220f7c1ae0 99 else if(strcmp(string1,"DELETE")==0){
bdarling 13:aa200749dba6 100 int num=0;
bdarling 13:aa200749dba6 101 sscanf(string2,"%d",&num);
bdarling 8:e3aff00ef600 102
bdarling 13:aa200749dba6 103 if(num>0){
bdarling 13:aa200749dba6 104 deleteSamples=num;
bdarling 13:aa200749dba6 105 pc.printf("deleting <%d>\n",deleteSamples);
bdarling 6:c7220f7c1ae0 106 }
bdarling 6:c7220f7c1ae0 107 else{
bdarling 10:47e6166f0797 108 pc.printf("invalid value\n");
bdarling 10:47e6166f0797 109 }
bdarling 6:c7220f7c1ae0 110 }
bdarling 6:c7220f7c1ae0 111
bdarling 8:e3aff00ef600 112 else if(strcmp(string1,"SETDATE")==0)
bdarling 6:c7220f7c1ae0 113 {
bdarling 8:e3aff00ef600 114 int validDigit=0;
bdarling 8:e3aff00ef600 115 int i;
bdarling 8:e3aff00ef600 116 for(i=0;i<8;i++){ //check first 8 elements of array are digits
bdarling 8:e3aff00ef600 117 if(isdigit(string2[i])){
bdarling 8:e3aff00ef600 118 validDigit++;
bdarling 8:e3aff00ef600 119 }
bdarling 8:e3aff00ef600 120 }
bdarling 8:e3aff00ef600 121 if(string2[8] == NULL){ //check element 8 of array is NULL, where the string terminates
bdarling 8:e3aff00ef600 122 validDigit++;
bdarling 8:e3aff00ef600 123 }
bdarling 8:e3aff00ef600 124
bdarling 10:47e6166f0797 125 if(validDigit==9){
bdarling 6:c7220f7c1ae0 126
bdarling 6:c7220f7c1ae0 127 dayStr[0] = string2[0];
bdarling 6:c7220f7c1ae0 128 dayStr[1] = string2[1];
bdarling 6:c7220f7c1ae0 129 dayStr[2] = NULL;
bdarling 6:c7220f7c1ae0 130 monthStr[0] = string2[2];
bdarling 6:c7220f7c1ae0 131 monthStr[1] = string2[3];
bdarling 6:c7220f7c1ae0 132 monthStr[2] = NULL;
bdarling 6:c7220f7c1ae0 133 yearStr[0] = string2[4];
bdarling 6:c7220f7c1ae0 134 yearStr[1] = string2[5];
bdarling 6:c7220f7c1ae0 135 yearStr[2] = string2[6];
bdarling 6:c7220f7c1ae0 136 yearStr[3] = string2[7];
bdarling 10:47e6166f0797 137 yearStr[4] = NULL;
bdarling 10:47e6166f0797 138 //note if date is required in int form, use atoi() to convert from string to int
bdarling 6:c7220f7c1ae0 139
bdarling 10:47e6166f0797 140 pc.printf("DATE UPDATED TO <%s><%s><%s>\n",dayStr,monthStr,yearStr);
bdarling 10:47e6166f0797 141
bdarling 6:c7220f7c1ae0 142 }
bdarling 6:c7220f7c1ae0 143 else{
bdarling 6:c7220f7c1ae0 144 pc.printf("invalid value\n");
bdarling 8:e3aff00ef600 145 }
bdarling 6:c7220f7c1ae0 146 }
bdarling 9:6fb498cf6156 147
bdarling 9:6fb498cf6156 148 else if(strcmp(string1,"SETTIME")==0)
bdarling 9:6fb498cf6156 149 {
bdarling 9:6fb498cf6156 150 int validDigit=0;
bdarling 9:6fb498cf6156 151 int i;
bdarling 9:6fb498cf6156 152 for(i=0;i<6;i++){ //check first 8 elements of array are digits
bdarling 9:6fb498cf6156 153 if(isdigit(string2[i])){
bdarling 9:6fb498cf6156 154 validDigit++;
bdarling 9:6fb498cf6156 155 }
bdarling 9:6fb498cf6156 156 }
bdarling 9:6fb498cf6156 157 if(string2[6] == NULL){ //check element 8 of array is NULL, where the string terminates
bdarling 9:6fb498cf6156 158 validDigit++;
bdarling 9:6fb498cf6156 159 }
bdarling 9:6fb498cf6156 160
bdarling 9:6fb498cf6156 161 if(validDigit==7){
bdarling 9:6fb498cf6156 162
bdarling 9:6fb498cf6156 163 hourStr[0] = string2[0];
bdarling 9:6fb498cf6156 164 hourStr[1] = string2[1];
bdarling 9:6fb498cf6156 165 hourStr[2] = NULL;
bdarling 9:6fb498cf6156 166 minuteStr[0] = string2[2];
bdarling 9:6fb498cf6156 167 minuteStr[1] = string2[3];
bdarling 9:6fb498cf6156 168 minuteStr[2] = NULL;
bdarling 9:6fb498cf6156 169 secondStr[0] = string2[4];
bdarling 9:6fb498cf6156 170 secondStr[1] = string2[5];
bdarling 10:47e6166f0797 171 secondStr[2] = NULL;
bdarling 9:6fb498cf6156 172
bdarling 13:aa200749dba6 173 pc.printf("TIME UPDATE TO <%s><%s><%s>\n",hourStr,minuteStr,secondStr);
bdarling 9:6fb498cf6156 174 }
bdarling 9:6fb498cf6156 175 else{
bdarling 9:6fb498cf6156 176 pc.printf("invalid value\n");
bdarling 9:6fb498cf6156 177 }
bdarling 9:6fb498cf6156 178 }
bdarling 6:c7220f7c1ae0 179
bdarling 6:c7220f7c1ae0 180 else{
bdarling 6:c7220f7c1ae0 181 pc.printf("invalid command\n");
bdarling 6:c7220f7c1ae0 182 }
bdarling 6:c7220f7c1ae0 183 }