Difference between revisions of "ARDUINO MEGA Functions Serial Link"

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(configureSerialPort)
(setBaudRate)
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== setBaudRate ==
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== bXmitComplete ==
 
{| style="color:black;" width="100%" cellpadding="5%" cellspacing="0" border="0"
 
{| style="color:black;" width="100%" cellpadding="5%" cellspacing="0" border="0"
 
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| class="functionType"| <span class="bigKeywordBI">void </span><span class="bigKeywordB">setBaudRate</span><span class="bigCodePunc">(</span><span class="bigKeywordBI">const </span><span class="bigKeywordB">TUARTs </span><span class="bigCodeBasic">nPort</span><span class="bigCodePunc">, </span><span class="bigKeywordB">TBaudRate </span><span class="bigCodeBasic">nBaudRate</span><span class="bigCodePunc">)</span>
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| class="functionType"| <span class="bigKeywordBI">bool</span><span class="bigKeywordB">bXmitComplete</span><span class="bigCodePunc">(</span><span class="bigKeywordBI">const </span><span class="bigKeywordB">TUARTs </span><span class="bigCodeBasic">nPort</span><span class="bigCodePunc">)</span>
 
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| style="font-family:Verdana, Geneva, sans-serif; color:black; background-color:#FFFFFF; text-align:left; font-size:100%;"|([[Data_Types#dataType_void|void]])  Function will set the Baud Rate for port 'nPort'.
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| style="font-family:Verdana, Geneva, sans-serif; color:black; background-color:#FFFFFF; text-align:left; font-size:100%;"|([[Data_Types#dataType_bool|bool]])  Function will return if the transmit (Xmit) buffer is empty.
Acceptable Baud Rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 200000, 230400 and 250000.  
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{| class="parameterTable" cellpadding="5%" width="100%"
 
{| class="parameterTable" cellpadding="5%" width="100%"
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   | style="border-style: solid; border-width: 1px 0px 0px 0px"|A sensor port or name
 
   | style="border-style: solid; border-width: 1px 0px 0px 0px"|A sensor port or name
 
   | style="border-style: solid; border-width: 1px 0px 0px 0px"|[[Data_Types#dataType_TUARTs|TUARTs]]
 
   | style="border-style: solid; border-width: 1px 0px 0px 0px"|[[Data_Types#dataType_TUARTs|TUARTs]]
  |-
 
  | style="border-style: solid; border-width: 0px 0px 0px 0px"|''nBaudRate''
 
  | style="border-style: solid; border-width: 0px 0px 0px 0px"|The baud rate to use
 
  | style="border-style: solid; border-width: 0px 0px 0px 0px"|[[Data_Types#dataType_TBaudRate|TBaudRate]]
 
 
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   |<syntaxhighlight lang="robotc">
 
   |<syntaxhighlight lang="robotc">
setBaudRate(uartOne, baudRate9600);  // retrieve the next char from UART Port 'uartOne'
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  sendChar(UART1, 'H');     //Send a character
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  if(!bXmitComplete(UART0)) //Wait until character has been transmitted
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    wait1Msec(1);
 
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Revision as of 16:44, 10 May 2012

ARDUINOFunctions and Variables → ARDUINO MEGA Functions Serial Link


The Arduino MEGA has 4 user serial ports - 1 reversed for the system and 3 user controllable serial ports. These serial ports can be configured in code or via the Motors and Sensor Setup window. The serial ports are buffered as well, with a 70 byte receive buffer and a 40 byte transmit buffer.

SerialPortsMega.png

Color Key
Function:
Variable:


getChar

short getChar(const TUARTs nPort)
(short) Function will retrieve the next character from the buffer that was sent to port 'nPort'.


Parameter Explanation Data Type
nPort A sensor port or name TUARTs


getChar(uartOne);  // retrieve the next char from UART Port 'uartOne'


sendChar

void sendChar(const TUARTs nPort, short nChar)
(void) Function will send the next character to port 'nPort'.


Parameter Explanation Data Type
nPort A sensor port or name TUARTs
nChar A char to send to 'nPort'. (Can be a short or a char) short


sendChar(uartOne, 'B');  // send the next char from UART Port 'uartOne'


setBaudRate

void setBaudRate(const TUARTs nPort, TBaudRate nBaudRate)
(void) Function will set the Baud Rate for port 'nPort'.

Acceptable Baud Rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 200000, 230400 and 250000.


Parameter Explanation Data Type
nPort A sensor port or name TUARTs
nBaudRate The baud rate to use TBaudRate


setBaudRate(uartOne, baudRate9600);  // retrieve the next char from UART Port 'uartOne'


configureSerialPort

void configureSerialPort(const TUARTs nPort, TSerialPortMode nMode)
(void) This function will manually configure the serial port for a specific mode (system, user, Xbee, VEX LCD, etc). You can also set this same functionality using the "Motors and Sensor Setup" window.


Parameter Explanation Data Type
nPort A sensor port or name TUARTs
TSerialPortMode The type of the serial device attached to this pin. TSerialPortMode


configureSerialPort(UART1, uartUserControl);  //Configures UART1 as a User Control Serial Port


bXmitComplete

boolbXmitComplete(const TUARTs nPort)
(bool) Function will return if the transmit (Xmit) buffer is empty.
Parameter Explanation Data Type
nPort A sensor port or name TUARTs


  sendChar(UART1, 'H');      //Send a character
  if(!bXmitComplete(UART0))  //Wait until character has been transmitted
    wait1Msec(1);