void brdInit (void);

MiniCom (OP6800)
User's Manual

Appendix D. OP6800 Function APIs

Appendix D provides the function calls related to the operation of the OP6800 board, I/O, serial channels, display, and keypad.

D.1 Board Initialization (OP68xx.LIB)

void brdInit (void);

Call this function at the beginning of your program. This function initializes the system I/O ports. This function also turns off LED DS1 to indicate that the initialization was successful.
The ports are initialized according to Table A-4.
SEE ALSO
digIn, digOut, serMode, ledOut
D.2 Digital I/O (OP68xx.LIB)

int digIn(int channel);

Reads the state of an input channel.
A runtime error will occur if brdInit was not executed before executing digIn, or when channel is out of range.
PARAMETER

channel is the input channel number (0-12), where IN00-IN12 are the normal user digital inputs.
RETURN VALUE

The state of the input (0 or 1).
SEE ALSO
brdInit, digOut, ledOut
void digOut(int channel, int value);

Sets the state of a digital output (OUT00-OUT10).
Remember to call the brdInit function before executing this function.
A runtime error will occur if brdInit was not executed before executing digOut, or when channel or value is out of range.

NOTE The LEDs and digital outputs OUT00-OUT06 are driven by the same driver chip. Do not use both ledOut and digOut to control the same LED or digital output in a given application.

PARAMETERS

channel is the output channel number (0-10).
value is the output value (0 or 1).
SEE ALSO
brdInit, digIn, ledOut
D.3 Serial Communication (OP68xx.LIB)

Library files included with Dynamic C provide a full range of serial communications support. The RS232.LIB library provides a set of circular-buffer-based serial functions. The PACKET.LIB library provides packet-based serial functions where packets can be delimited by the 9th bit, by transmission gaps, or with user-defined special characters. Both libraries provide blocking functions, which do not return until they are finished transmitting or receiving, and nonblocking functions, which must be called repeatedly until they are finished. For more information, see the Dynamic C Premier User's Manual and Technical Note 213, Rabbit 2000 Serial Port Software.

Use the following function calls with the OP6800.

int serMode(int mode);

User interface to set up OP6800 serial communication lines. Call this function after serXOpen().
Whether you are opening one or multiple serial ports, this function must be executed after executing the last serXOpen function AND before you start using any of the serial ports. This function is non-reentrant.
If Mode 1 is selected, CTS/RTS flow control is exercised using the serCflowcontrolOn and serCflowcontrolOff functions from the RS232.LIB library.
PARAMETER

mode is the defined serial port configuration.

Mode

Serial Port

B

C

D

0 RS-232, 3-wire RS-232, 3-wire RS-485

1 RS-232, 5-wire CTS/RTS RS-485

RETURN VALUE

0 if valid mode, 1 if not.
SEE ALSO
ser485Tx, ser485Rx
NOTE Be sure to call serMode before either of the next two functions.

void ser485Tx(void);

Sets pin 3 (DE) high to enable the RS-485 transmitter. Remember to call serMode before calling ser485Tx.
SEE ALSO
serMode, ser485Rx
void ser485Rx(void);

Resets pin 3 (DE) low to disable the RS-485 transmitter. Remember to call serMode before calling ser485Rx.
SEE ALSO
serMode, ser485Tx, serCflowcontrolOn, serCflowcontrolOff
D.4 LEDs (OP68xx.LIB)

When power is applied to the OP6800 for the first time, the red LED (DS1) will come on, indicating that power is being applied to the OP6800. The red LED is turned off when the brdInit function executes.

The LEDs are in series with the open-ouput collector that drives digital outputs OUT00-OUT06, and so the same function call that turns on one of these digital outputs will also turn on the corresponding LED.

void ledOut(int led, int value);

LED on/off control.
A runtime error will occur if brdInit was not executed before executing ledOut, or when led or value is out of range.

NOTE The LEDs and digital outputs OUT00-OUT06 are driven by the same driver chip. Do not use both ledOut and digOut to control the same LED or digital output in a given application.

PARAMETERS

led is the LED to control.

0 = LED DS1
1 = LED DS2
2 = LED DS3
3 = LED DS4
4 = LED DS5
5 = LED DS6
6 = LED DS7
value is the value used to control whether the LED is on or off (0 or 1).

0 = off
1 = on
RETURN VALUE

None.
SEE ALSO
brdInit, digOut
D.5 LCD Display

The functions used to control the LCD display are contained in the GRAPHIC.LIB library located in the Dynamic C DISPLAYS\GRAPHIC library directory.

void glInit(void);

Initializes the display devices, clears the screen.
RETURN VALUE

None.
SEE ALSO
glDispOnOFF, glBacklight, glSetContrast, glPlotDot, glBlock, glPlotDot, glPlotPolygon, glPlotCircle, glHScroll, glVScroll, glXFontInit, glPrintf, glPutChar, glSetBrushType, glBuffLock, glBuffUnlock, glPlotLine
void glBackLight(int onOff);

Sets the intensity of the backlight, if circuitry is installed.
PARAMETER

: onOff reflects the low to high values (typically 0 to 255, depending on the board design) to set the backlight intensity (0 will turn the backlight off completely.)
RETURN VALUE

None.
SEE ALSO
glInit, glDispOnoff, glSetContrast
void glDispOnOff(int onOff);

Sets the LCD screen on or off. Data will not be cleared from the screen.
PARAMETER

onOff turns the LCD screen on or off

1--turn the LCD screen on
0--turn the LCD screen off
RETURN VALUE

None.
SEE ALSO
glInit, glSetContrast, glBackLight
void glSetContrast(unsigned level);

Sets display contrast (the circuitry is not installed on the LCD/keypad module used with the OP6800).
PARAMETER

level reflects low to high values (typically 0 to 255, depending on the board design) to give high to low contrast respectively.
RETURN VALUE

None.
SEE ALSO
glInit, glBacklight, glDispOnoff
void glFillScreen(char pattern);

Fills the LCD display screen with a pattern.
PARAMETER

The screen will be set to all black if pattern is 0xFF, all white if pattern is 0x00, and vertical stripes for any other pattern.
RETURN VALUE

None.
SEE ALSO
glBlock, glBlankScreen, glPlotPolygon, glPlotCircle
void glBlankScreen(void);

Blanks the LCD display screen (sets LCD display screen to white).
RETURN VALUE

None.
SEE ALSO
glFillScreen, glBlock, glPlotPolygon, glPlotCircle
void glBlock(int x, int y, int bmWidth, int bmHeight);

Draws a rectangular block in the page buffer and on the LCD if the buffer is unlocked. Any portion of the block that is outside the LCD display area will be clipped.
PARAMETERS

x is the x coordinate of the upper left corner of the block.
y is the y coordinate of the left top corner of the block.
bmWidth is the width of the block.
bmWidth is the height of the block.
RETURN VALUE

None.
SEE ALSO
glFillScreen, glBlankScreen, glPlotPolygon, glPlotCircle
void glPlotVPolygon(int n, int *pFirstCoord);

Plots the outline of a polygon in the LCD page buffer, and on the LCD if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. The function will also return, doing nothing, if there are less than 3 vertices.
PARAMETERS

n is the number of vertices.
*pFirstCoord is a pointer to array of vertex coordinates: x1,y1, x2,y2, x3,y3,...
RETURN VALUE

None.
SEE ALSO
glPlotPolygon, glFillPolygon, glFillVPolygon
void glPlotPolygon(int n, int y1, int x2, int y2, ...);

Plots the outline of a polygon in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. The function will also return, doing nothing, if there are less than 3 vertices.
PARAMETERS

n is the number of vertices.
y1 is the y coordinate of the first vertex.
x1 is the x coordinate of the first vertex.
y2 is the y coordinate of the second vertex.
x2 is the x coordinate of the second vertex.
... are the coordinates of additional vertices.
RETURN VALUE

None.
SEE ALSO
glPlotVPolygon, glFillPolygon, glFillVPolygon
void glFillVPolygon(int n, int *pFirstCoord);

Fills a polygon in the LCD page buffer and on the LCD screen if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. The function will also return, doing nothing, if there are less than 3 vertices.
PARAMETERS

n is the number of vertices.
*pFirstCoord is a pointer to array of vertex coordinates: x1,y1, x2,y2, x3,y3,...
RETURN VALUE

None.
SEE ALSO
glFillPolygon, glPlotPolygon, glPlotVPolygon
void glFillPolygon(int n, int x1, int y1, int x2, int y2, ...);

Fills a polygon in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped.
PARAMETERS

n is the number of vertices.
x1 is the x coordinate of the first vertex.
y1 is the y coordinate of the first vertex.
x2 is the x coordinate of the second vertex.
y2 is the y coordinate of the second vertex.
... are the coordinates of additional vertices.
RETURN VALUE

None.
SEE ALSO
glFillVPolygon, glPlotPolygon, glPlotVPolygon
void glPlotCircle(int xc, int yc, int rad);

Draws a circle in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the circle that is outside the LCD display area will be clipped.
PARAMETERS

xc is the x coordinate of the center of the circle.
yc is the y coordinate of the center of the circle.
rad is the radius of the center of the circle (in pixels).
RETURN VALUE

None.
SEE ALSO
glFillCircle, glPlotPolygon, glFillPolygon
void glFillCircle(int xc, int yc, int rad);

Draws a filled circle in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the circle that is outside the LCD display area will be clipped.
PARAMETERS

xc is the x coordinate of the center of the circle.
yc is the y coordinate of the center of the circle.
rad is the radius of the center of the circle (in pixels).
RETURN VALUE

None.
SEE ALSO
glPlotCircle, glPlotPolygon, glFillPolygon
void glXFontInit(fontInfo *pInfo, char pixWidth, char pixHeight, unsigned startChar, unsigned endChar, unsigned long xmemBuffer);

Initializes the font descriptor structure, where the font is stored in xmem. Each font character's bitmap is column major and byte-aligned.
PARAMETERS

*pInfo is a pointer to the font descriptor to be initialized.
pixWidth is the width (in pixels) of each font item.
pixHeight is the height (in pixels) of each font item.
startChar is the value of the first printable character in the font character set.
endChar is the value of the last printable character in the font character set.
xmemBuffer is the xmem pointer to a linear array of font bitmaps.
RETURN VALUE

None.
SEE ALSO
glPrinf
unsigned long glFontCharAddr(fontInfo *pInfo, char letter);

Returns the xmem address of the character from the specified font set.
PARAMETERS

*pInfo is the xmem address of the bitmap font set.
letter is an ASCII character.
RETURN VALUE

xmem address of bitmap character font, column major, and byte-aligned.
SEE ALSO
glPutFont, glPrintf
void glPutFont(int x, int y, fontInfo *pInfo, char code);

Puts an entry from the font table to the page buffer and on the LCD if the buffer is unlocked. Each font character's bitmap is column major and byte-aligned. Any portion of the bitmap character that is outside the LCD display area will be clipped.
PARAMETERS

x is the x coordinate (column) of the upper left corner of the text.
y is the y coordinate (row) of the left top corner of the text.
*pInfo is a pointer to the font descriptor.
code is the ASCII character to display.
RETURN VALUE

None.
SEE ALSO
glFontCharAddr, glPrintf
void glSetPfStep(int stepX, int stepY);

Sets the glPrintf() printing step direction. The x and y step directions are independent signed values. The actual step increments depend on the height and width of the font being displayed, which are multiplied by the step values.
PARAMETERS

stepX is the glPrintf x step value
stepY is the glPrintf y step value
RETURN VALUE

None.
SEE ALSO

Use glGetPfStep() to examine the current x and y printing step direction.

int glGetPfStep(void);

Gets the current glPrintf() printing step direction. Each step direction is independent of the other, and is treated as an 8-bit signed value. The actual step increments depends on the height and width of the font being displayed, which are multiplied by the step values.
RETURN VALUE

The x step is returned in the MSB, and the y step is returned in the LSB of the integer result.
SEE ALSO

Use glGetPfStep() to control the x and y printing step direction.

void glPutChar(char ch, char *ptr, int *cnt, glPutCharInst *pInst)

Provides an interface between the STDIO string-handling functions and the graphic library. The STDIO string-formatting function will call this function, one character at a time, until the entire formatted string has been parsed. Any portion of the bitmap character that is outside the LCD display area will be clipped.
PARAMETERS

ch is the character to be displayed on the LCD.
*ptr is not used, but is a place holder for STDIO string functions.
*cnt is not used, is a place holder for STDIO string functions.
*pInst is a font descriptor pointer.
RETURN VALUE

None.
SEE ALSO
glPrintf, glPutFont, doprnt
void glPrintf(int x, int y, fontInfo *pInfo, char *fmt, ...);

Prints a formatted string (much like printf) on the LCD screen. Only the character codes that exist in the font set are printed, all others are skipped. For example, '\b', '\t', '\n' and '\r' (ASCII backspace, tab, new line, and carriage return, respectively) will be printed if they exist in the font set, but will not have any effect as control characters. Any portion of the bitmap character that is outside the LCD display area will be clipped.
PARAMETERS

x is the x coordinate (column) of the upper left corner of the text.
y is the y coordinate (row) of the upper left corner of the text.
*pInfo is a font descriptor pointer.
*fmt is a formatted string.
... are formatted string conversion parameter(s).
EXAMPLE
glprintf(0,0, &fi12x16, "Test %d\n", count);
RETURN VALUE

None.
SEE ALSO
glXFontInit
void glBuffLock(void);

Increments LCD screen locking counter. Graphic calls are recorded in the LCD memory buffer and are not transferred to the LCD if the counter is non-zero.

NOTE glBuffLock() and glBuffUnlock() can be nested up to a level of 255, but be sure to balance the calls. It is not a requirement to use these procedures, but a set of glBuffLock() and glBuffUnlock()bracketing a set of related graphic calls speeds up the rendering significantly.
RETURN VALUE

None.
SEE ALSO
glBuffUnlock, glSwap
void glBuffUnlock(void);

Decrements the LCD screen locking counter. The contents of the LCD buffer are transferred to the LCD if the counter goes to zero.
RETURN VALUE

None.
SEE ALSO
glBuffLock, glSwap
void glSwap(void);

Checks the LCD screen locking counter. The contents of the LCD buffer are transferred to the LCD if the counter is zero.
RETURN VALUE

None.
SEE ALSO
glBuffUnlock, glBuffLock, _glSwapData (located in the library specifically for the LCD that you are using)
void glSetBrushType(int type);

Sets the drawing method (or color) of pixels drawn by subsequent graphic calls.
PARAMETER

type value can be one of the following macros.
PIXBLACK draws black pixels.
PIXWHITE draws white pixels.
PIXXOR draws old pixel XOR'ed with the new pixel.
RETURN VALUE

None.
SEE ALSO
glGetBrushType
int glGetBrushType(void);

Gets the current method (or color) of pixels drawn by subsequent graphic calls.
RETURN VALUE

The current brush type.
SEE ALSO
glSetBrushType
void glPlotDot(int x, int y);

Draws a single pixel in the LCD buffer, and on the LCD if the buffer is unlocked. If the coordinates are outside the LCD display area, the dot will not be plotted.
PARAMETERS

x is the x coordinate of the dot.
y is the y coordinate of the dot.
RETURN VALUE

None.
SEE ALSO
glPlotline, glPlotPolygon, glPlotCircle
void glPlotLine(int x0, int y0, int x1, int y1);

Draws a line in the LCD buffer, and on the LCD if the buffer is unlocked. Any portion of the line that is beyond the LCD display area will be clipped.
PARAMETERS

x0 is the x coordinate of one endpoint of the line.
y0 is the y coordinate of one endpoint of the line.
x1 is the x coordinate of the other endpoint of the line.
y1 is the y coordinate of the other endpoint of the line.
RETURN VALUE

None.
SEE ALSO
glPlotDot, glPlotPolygon, glPlotCircle
void glLeft1(int left, int top, int cols, int rows);

Scrolls byte-aligned window left one pixel, right column is filled by current pixel type (color).
PARAMETERS

left is the upper left corner of bitmap, must be evenly divisible by 8.
top is the left top corner of the bitmap.
cols is the number of columns in the window, must be evenly divisible by 8.
rows is the number of rows in the window.
RETURN VALUE

None.
SEE ALSO
glHScroll, glRight1
void glRight1(int left, int top, int cols, int rows);

Scrolls byte-aligned window right one pixel, left column is filled by current pixel type (color).
PARAMETERS

left is the upper left corner of bitmap, must be evenly divisible by 8.
top is the left top corner of the bitmap.
cols is the number of columns in the window, must be evenly divisible by 8.
rows is the number of rows in the window.
RETURN VALUE

None.
SEE ALSO
glHScroll, glLeft1
void glUp1(int left, int top, int cols, int rows);

Scrolls byte-aligned window up one pixel, bottom column is filled by current pixel type (color).
PARAMETERS

left is the upper left corner of bitmap, must be evenly divisible by 8.
top is the left top corner of the bitmap.
cols is the number of columns in the window, must be evenly divisible by 8.
rows is the number of rows in the window.
RETURN VALUE

None.
SEE ALSO
glVScroll, glDown1
void glDown1(int left, int top, int cols, int rows);

Scrolls byte-aligned window down one pixel, top column is filled by current pixel type (color).
PARAMETERS

left is the upper left corner of bitmap, must be evenly divisible by 8.
top is the left top corner of the bitmap.
cols is the number of columns in the window, must be evenly divisible by 8.
rows is the number of rows in the window.
RETURN VALUE

None.
SEE ALSO
glVScroll, glUp1
void glHScroll(int left, int top, int cols, int rows, int nPix);

Scrolls right or left, within the defined window by x number of pixels. The opposite edge of the scrolled window will be filled in with white pixels. The window must be byte-aligned.
Parameters will be verified for the following:
1. The left and cols parameters will be verified that they are evenly divisible by 8. If not, they will be changed to a value that is a multiple of 8.
2. Parameters will be checked to verify that the scrolling area is valid. The minimum scrolling area is a width of 8 pixels and a height of one row.
PARAMETERS

left is the upper left corner of bitmap, must be evenly divisible by 8.
top is the left top corner of the bitmap.
cols is the number of columns in the window, must be evenly divisible by 8.
rows is the number of rows in the window.
nPix is the number of pixels to scroll within the defined window (a negative value will produce a scroll to the left).
RETURN VALUE

None.
SEE ALSO
glVScroll
void glVScroll(int left, int top, int cols, int rows, int nPix);

Scrolls up or down, within the defined window by x number of pixels. The opposite edge of the scrolled window will be filled in with white pixels. The window must be byte-aligned.
Parameters will be verified for the following:
1. The left and cols parameters will be verified that they are evenly divisible by 8. If not, they will be changed to a value that is a multiple of 8.
2. Parameters will be checked to verify that the scrolling area is valid. The minimum scrolling area is a width of 8 pixels and a height of one row.
PARAMETERS

left is the upper left corner of bitmap, must be evenly divisible by 8.
top is the left top corner of the bitmap.
cols is the number of columns in the window, must be evenly divisible by 8.
rows is the number of rows in the window.
nPix is the number of pixels to scroll within the defined window (a negative value will produce a scroll up).
RETURN VALUE

None.
SEE ALSO
glHScroll
void glXPutBitmap(int left, int top, int width, int height, unsigned long bitmap);

Draws bitmap in the specified space. The data for the bitmap are stored in xmem. This function calls glXPutFastmap automatically if the bitmap is byte-aligned (the left edge and the width are each evenly divisible by 8).
Any portion of a bitmap image or character that is outside the LCD display area will be clipped.
PARAMETERS

left is the upper left corner of the bitmap.
top is the upper left corner of the bitmap.
width is the width of the bitmap.
height is the height of the bitmap.
bitmap is the address of the bitmap in xmem.
RETURN VALUE

None.
SEE ALSO
glXPutFastmap, glPrintf
void glXPutFastmap(int left, int top, int width, int height, unsigned long bitmap);

Draws bitmap in the specified space. The data for the bitmap are stored in xmem. This function is like glXPutBitmap, except that it is faster. The restriction is that the bitmap must be byte-aligned.
Any portion of a bitmap image or character that is outside the LCD display area will be clipped.
PARAMETERS

left is the upper left corner of the bitmap, must be evenly divisible by 8.
top is the upper left corner of the bitmap.
width is the width of the bitmap, must be evenly divisible by 8.
height is the height of the bitmap.
bitmap is the address of the bitmap in xmem.
RETURN VALUE

None.
SEE ALSO
glXPutBitmap, glPrintf
int TextWindowFrame(windowFrame *window, fontInfo *pFont, int x, int y, int winWidth, int winHeight)

Defines a text-only display window. This function provides a way to display characters within the text window using only character row and column coordinates. The text window feature provides end-of-line wrapping and clipping after the character in the last column and row is displayed.

NOTE Execute the TextWindowFrame function before other Text... functions.

PARAMETERS

*window is a window frame descriptor pointer.
*pFont is a font descriptor pointer.
x is the x coordinate of where the text window frame is to start.
y is the y coordinate of where the text window frame is to start.
winWidth is the width of the text window frame.
winHeight is the height of the text window frame.
RETURN VALUE

0--window frame was successfully created.
-1--x coordinate + width has exceeded the display boundary.
-2--y coordinate + height has exceeded the display boundary.

void TextGotoXY(windowFrame *window, int col, int row);

Sets the cursor location on the display of where to display the next character. The display location is based on the height and width of the character to be displayed.

NOTE Execute the TextWindowFrame function before using this function.

PARAMETERS

*window is a pointer to a font descriptor.
col is a character column location.
row is a character row location.
RETURN VALUE

None.
SEE ALSO
TextPutChar, TextPrintf, TextWindowFrame
void TextCursorLocation(windowFrame *window, int *col, int *row);

Gets the current cursor location that was set by a Graphic Text... function.

NOTE Execute the TextWindowFrame function before using this function.

PARAMETERS

*window is a pointer to a font descriptor.
*col is a pointer to cursor column variable.
*row is a pointer to cursor row variable.
RETURN VALUE

Lower word = Cursor Row location
Upper word = Cursor Column location
SEE ALSO
TextGotoXY, TextPrintf, TextWindowFrame, TextCursorLocation
void TextPutChar(struct windowFrame *window, char ch);

Displays a character on the display where the cursor is currently pointing. If any portion of a bitmap character is outside the LCD display area, the character will not be displayed.

NOTE Execute the TextWindowFrame function before using this function.

PARAMETERS

*window is a pointer to a font descriptor.
ch is a character to be displayed on the LCD.
RETURN VALUE

None.
SEE ALSO
TextGotoXY, TextPrintf, TextWindowFrame, TextCursorLocation
void TextPrintf(struct windowFrame *window, char *fmt, ...);

Prints a formatted string (much like printf) on the LCD screen. Only printable characters in the font set are printed, also escape sequences, '\r' and '\n' are recognized. All other escape sequences will be skipped over; for example, '\b' and 't' will print if they exist in the font set, but will not have any effect as control characters.
The text window feature provides end-of-line wrapping and clipping after the character in the last column and row is displayed.

NOTE Execute the TextWindowFrame function before using this function.

PARAMETERS

*window is a pointer to a font descriptor.
*fmt is a formatted string.
... are formatted string conversion parameter(s).
EXAMPLE
TextPrintf(&TextWindow, "Test %d\n", count);
RETURN VALUE

None.
SEE ALSO
TextGotoXY, TextPutChar, TextWindowFrame, TextCursorLocation
D.6 Keypad

The functions used to control the keypad are contained in the KEYPAD7.LIB library located in the Dynamic C KEYPADS library directory.

void keyInit(void);

Initializes keypad process
RETURN VALUE

None.
SEE ALSO
brdInit
void keyConfig(char cRaw, char cPress, char cRelease, char cCntHold, char cSpdLo, char cCntLo, char cSpdHi);

Assigns each key with key press and release codes, and hold and repeat ticks for auto repeat and debouncing.
PARAMETERS

cRaw is a raw key code index.

1x7 keypad matrix with raw key code index assignments (in brackets):

[0]
[1]
[2]
[3]

[4]
[5]
[6]

User Keypad Interface

cPress is a key press code

An 8-bit value is returned when a key is pressed.
0 = Unused.

See keypadDef() for default press codes.
cRelease is a key release code.

An 8-bit value is returned when a key is pressed.
0 = Unused.
cCntHold is a hold tick.

How long to hold before repeating.
0 = No Repeat.
cSpdLo is a low-speed repeat tick.

How many times to repeat.
0 = None.
cCntLo is a low-speed hold tick.

How long to hold before going to high-speed repeat.
0 = Slow Only.
cSpdHi is a high-speed repeat tick.

How many times to repeat after low speed repeat.
0 = None.
RETURN VALUE

None.
SEE ALSO
keyProcess, keyGet, keypadDef
void keyProcess(void);

Scans and processes keypad data for key assignment, debouncing, press and release, and repeat.

NOTE This function is also able to process an 8 × 8 matrix keypad.

RETURN VALUE

None
SEE ALSO
keyConfig, keyGet, keypadDef
char keyGet(void);

Get next keypress
RETURN VALUE

The next keypress, or 0 if none
SEE ALSO
keyConfig, keyProcess, keypadDef
int keyUnget(char cKey);

Push keypress on top of input queue
PARAMETER

cKey
RETURN VALUE

None.
SEE ALSO
keyGet
void keypadDef();

Configures the physical layout of the keypad with the desired ASCII return key codes.

Keypad physical mapping 1 × 7

0 4 1 5 2 6 3

['L']
['U']
['D']
['R']

['-']
['+']
['E']

where
'E' represents the ENTER key
'D' represents Down Scroll
'U' represents Up Scroll
'R' represents Right Scroll
'L' represents Left Scroll
Example: Do the following for the above physical vs. ASCII return key codes.
	 	 	 	 	 keyConfig (  3,'R',0, 0, 0, 0, 0 );
	 	 	 	 	 keyConfig (  6,'E',0, 0, 0, 0, 0 );
	 	 	 	 	 keyConfig (  2,'D',0, 0, 0, 0, 0 );
	 	 	 	 	 keyConfig (  4,'-',0, 0, 0, 0, 0 );
	 	 	 	 	 keyConfig (  1,'U',0, 0, 0, 0, 0 );
	 	 	 	 	 keyConfig (  5,'+',0, 0, 0, 0, 0 );
	 	 	 	 	 keyConfig (  0,'L',0, 0, 0, 0, 0 );
Characters are returned upon keypress with no repeat.
RETURN VALUE

None.
SEE ALSO
keyConfig, keyGet, keyProcess
void keyScan(char *pcKeys);

Writes "1" to each row and reads the value. The position of a keypress is indicated by a zero value in a bit position.
PARAMETER
*pcKeys is the address of the value read.
RETURN VALUE

None.
SEE ALSO
keyConfig, keyGet, keypadDef, keyProcess

Mode	Serial Port
B	C	D
0	RS-232, 3-wire	RS-232, 3-wire	RS-485
1	RS-232, 5-wire	CTS/RTS	RS-485

[0]		[1]		[2]		[3]
	[4]		[5]		[6]

0	4	1	5	2	6	3
['L']		['U']		['D']		['R']
	['-']		['+']		['E']

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