68 lines
3.1 KiB
C++
68 lines
3.1 KiB
C++
/*
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Maple Mini StringEx by m. ray burnette: PUBLIC DOMAIN
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Arduino 1.6.0rc1
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Sketch uses 18,272 bytes (16%) of program storage space. Maximum is 108,000 bytes.
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Global variables use 3,776 bytes of dynamic memory.
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History:
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http://forum.arduino.cc/index.php?topic=266669
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"How do i get index 6+7 and 8+9 from a stream of 24 chars that come from the serial input into the Arduino?
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The connected serial device is in idle mode until i send a command to it. When i send ZD,
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it will send a timecode in the format ZD2b102c080c090e05ba0549, where ZD stands for the type of message it returns.
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2c represents the minutes and 08 the hours of the the current time (in HEX format). The last 4 chars are a checksum.
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There is no CR or NL at the end. I would like to get the minutes and hours as interger values."
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*/
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#include <Streaming.h> // get used to this library - it makes serial output easy
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char sInput[] = {"ZD2b102c080c090e05ba0549\0"} ; // this data would come in over the serial connection
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String sMM ; // 0xHH\0 = 5 characters
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String sHH ; // Type String allows for concatenation and substrings
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char Mbuf[5] ; // 5 character user buffer for minutes, same type as serial input
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char Hbuf[5] ; // ditto - this one is for the 2 digit hours (HEX: "0x??\0")
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int hours, minutes ; // This is the final product that we are desiring
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void setup(void)
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{
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// initialize the digital pin as an output.
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pinMode(33, OUTPUT);
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Serial.begin(9600);
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// wait for serial monitor to be connected.
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while (!Serial)
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{
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digitalWrite(33,!digitalRead(33));// Turn the LED from off to on, or on to off
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delay(100); // fast blink
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}
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Serial << "Beginning Example Run...\r\n" ;
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Serial << "Original String: " << sInput << "\r\n\r\n" ;
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// alternate http://arduino.cc/en/Reference/StringSubstring
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// Ref: http://arduino.cc/en/Reference/StringToCharArray
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// Ref: http://stackoverflow.com/questions/23576827/arduino-convert-a-sting-hex-ffffff-into-3-int
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// 0123456789 <----- Character count in input array (type char)
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//"ZD2b102c080c090e05ba0549\0" <----- Input stream representation stored in char array sInput[]
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// mmhh <----- HEX values we desire within the stream
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sMM += "0x" ; sMM += sInput[6]; sMM += sInput[7]; sMM += '\0' ; // concatenate individual string elements
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sHH += "0x" ; sHH += sInput[8]; sHH += sInput[9]; sHH += '\0' ; // ditto
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Serial << "Substrings: " << sHH << ":" << sMM << "\r\n\r\n" ; // show it on term
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sMM.toCharArray( Mbuf, 5 ) ; // <----- convert String to Char Array
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sHH.toCharArray( Hbuf, 5 ) ; // ditto
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hours = (int)strtol(Hbuf, NULL, 16); // <----- cast to (int) because strtol returns long
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minutes= (int)strtol(Mbuf, NULL, 16); // ditto
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Serial << "Hours: " << hours << " Minutes: " << minutes << "\r \n"; // show it on term
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Serial << "\r\n *****End of run*****\r\n" ;
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Serial.end();
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}
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void loop( void ) {}
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/* ============================== CONSOLE OUTPUT ==============================
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Beginning Example Run...
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Original String: ZD2b102c080c090e05ba0549
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Substrings: 0x08\0:0x2c\0
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Hours: 8 Minutes: 44
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*****End of run*****
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*/
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