iframe-proxy | Sunbelt Computer Software

History

170 lines (152 loc) · 6.48 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

/*----------------------------------------------------------------------*

* Displays the date and time from an MCP79412 RTC every second. *

* *

* Set the date and time by entering the following on the Arduino *

* serial monitor: *

* Syear,month,day,hour,minute,second, *

* *

* Where *

* year can be two or four digits, *

* month is 1-12, *

* day is 1-31, *

* hour is 0-23, and *

* minute and second are 0-59. *

* *

* Set the calibration register by entering the following: *

* Cnnn, *

* *

* Where nnn can be a positive or negative value, e.g. "c4" or "c-42". *

* *

* Entering the final comma delimiter (after "second") will avoid a *

* one-second timeout and will allow the RTC to be set more accurately. *

* *

* No validity checking is done, invalid values or incomplete syntax *

* in the input will result in an incorrect RTC setting. *

* *

* Jack Christensen 28Aug2013 *

* *

* Tested with Arduino 1.0.5, Arduino Uno. *

* *

* This work is licensed under the Creative Commons Attribution- *

* ShareAlike 3.0 Unported License. To view a copy of this license, *

* visit http://creativecommons.org/licenses/by-sa/3.0/ or send a *

* letter to Creative Commons, 171 Second Street, Suite 300, *

* San Francisco, California, 94105, USA. *

*----------------------------------------------------------------------*/

#include <MCP79412RTC.h> //http://github.com/JChristensen/MCP79412RTC

#include <Streaming.h> //http://arduiniana.org/libraries/streaming/

#include <Time.h> //http://playground.arduino.cc/Code/Time

#include <Wire.h> //http://arduino.cc/en/Reference/Wire

void setup(void)

{

byte rtcID[8];

Serial.begin(115200);

//setSyncProvider() causes the Time library to synchronize with the

//external RTC by calling RTC.get() every five minutes by default.

setSyncProvider(RTC.get);

Serial << endl << F("RTC Sync");

if (timeStatus() != timeSet) Serial << F(" FAIL!");

Serial << endl;

RTC.idRead(rtcID);

Serial << F("RTC ID = ");

for (int i=0; i<8; ++i) {

if (rtcID[i] < 16) Serial << '0';

Serial << _HEX(rtcID[i]);

}

Serial << endl;

RTC.getEUI64(rtcID);

Serial << F("EUI-64 = ");

for (int i=0; i<8; ++i) {

if (rtcID[i] < 16) Serial << '0';

Serial << _HEX(rtcID[i]);

}

Serial << endl;

Serial << F("Calibration Register = ") << RTC.calibRead() << endl;

}

void loop(void)

{

static time_t tLast;

time_t t;

tmElements_t tm;

int cmdChar, y, oldCal, newCal;

//check for input, first character is a command, "S" to set date/time, or "C" to set the calibration register

if (Serial.available()) {

cmdChar = Serial.read();

switch (cmdChar) {

case 'S':

case 's':

//note that the tmElements_t Year member is an offset from 1970,

//but the RTC wants the last two digits of the calendar year.

//use the convenience macros from Time.h to do the conversions.

y = Serial.parseInt();

if (y >= 100 && y < 1000)

Serial << F("Error: Year must be two digits or four digits!") << endl;

else {

if (y >= 1000)

tm.Year = CalendarYrToTm(y);

else //(y < 100)

tm.Year = y2kYearToTm(y);

tm.Month = Serial.parseInt();

tm.Day = Serial.parseInt();

tm.Hour = Serial.parseInt();

tm.Minute = Serial.parseInt();

tm.Second = Serial.parseInt();

t = makeTime(tm);

RTC.set(t); //use the time_t value to ensure correct weekday is set

setTime(t);

Serial << F("RTC set to: ");

printDateTime(t);

Serial << endl;

}

break;

case 'C':

case 'c':

newCal = Serial.parseInt();

oldCal = RTC.calibRead();

RTC.calibWrite(newCal);

Serial << F("Calibration changed from ") << oldCal << F(" to ") << RTC.calibRead() << endl;

break;

default:

Serial << endl << F("Unrecognized command: ") << (char)cmdChar << endl;

break;

}

//dump any extraneous input

while (Serial.available() > 0) Serial.read();

}

t = now();

if (t != tLast) {

tLast = t;

printDateTime(t);

Serial << endl;

}

//print date and time to Serial

void printDateTime(time_t t)

{

printDate(t);

Serial << ' ';

printTime(t);

}

//print time to Serial

void printTime(time_t t)

{

printI00(hour(t), ':');

printI00(minute(t), ':');

printI00(second(t), ' ');

}

//print date to Serial

void printDate(time_t t)

{

printI00(day(t), 0);

Serial << monthShortStr(month(t)) << _DEC(year(t));

}

//Print an integer in "00" format (with leading zero),

//followed by a delimiter character to Serial.

//Input value assumed to be between 0 and 99.

void printI00(int val, char delim)

{

if (val < 10) Serial << '0';

Serial << _DEC(val);

if (delim > 0) Serial << delim;

return;

}

Sunbelt Computer Software

PL/B Language Development and Support

Navigation Menu

Sunbelt Computer Software

PL/B Language Development and Support

FilesExpand file tree

SetSerial.ino

Latest commit

History

SetSerial.ino

File metadata and controls