rename to rowEnd, document
This commit is contained in:
parent
a44b6f620d
commit
514c326800
@ -29,7 +29,7 @@ Polling I2C may slow the scan rate enough so that no additional delay is needed:
|
|||||||
const unsigned int Row::DELAY_MICROSECONDS = 0;
|
const unsigned int Row::DELAY_MICROSECONDS = 0;
|
||||||
|
|
||||||
Slow-scan trick for debug messages that print too fast and not aligned, add this to sketch loop():
|
Slow-scan trick for debug messages that print too fast and not aligned, add this to sketch loop():
|
||||||
delay(1000);
|
delay(500);
|
||||||
Keyboard.println("");
|
Keyboard.println("");
|
||||||
That way debug messages are printed at a managable rate, and each scan starts a new line.
|
That way debug messages are printed at a managable rate, and each scan starts a new line.
|
||||||
*/
|
*/
|
||||||
@ -41,6 +41,7 @@ void RowBase::wait()
|
|||||||
/*
|
/*
|
||||||
pressRelease() calls key's press() or release() function if it was pressed or released.
|
pressRelease() calls key's press() or release() function if it was pressed or released.
|
||||||
Both parameters are bitwise.
|
Both parameters are bitwise.
|
||||||
|
rowEnd bit marks positioned immediatly after last key of row.
|
||||||
*/
|
*/
|
||||||
void RowBase::pressRelease(const uint16_t rowEnd, const uint8_t debouncedChanged)
|
void RowBase::pressRelease(const uint16_t rowEnd, const uint8_t debouncedChanged)
|
||||||
{
|
{
|
||||||
|
@ -2,11 +2,15 @@
|
|||||||
|
|
||||||
/*
|
/*
|
||||||
Strobes the row and reads the columns.
|
Strobes the row and reads the columns.
|
||||||
|
Sets rowEnd and returns rowState.
|
||||||
|
rowEnd is a bitwise row mask, one col per bit, where active col bit is 1.
|
||||||
|
At end of function, 1 bit marks place immediatly after last key of row.
|
||||||
|
rowEnd is a larger type than portMask so that it can not overflow.
|
||||||
*/
|
*/
|
||||||
uint8_t RowScanner_Arduino::scan(uint16_t& rowEnd)
|
uint8_t RowScanner_Arduino::scan(uint16_t& rowEnd)
|
||||||
{
|
{
|
||||||
uint8_t rowState = 0;
|
uint8_t rowState = 0;
|
||||||
uint8_t col = 1;
|
rowEnd = 1;
|
||||||
|
|
||||||
//strobe row on
|
//strobe row on
|
||||||
if (activeHigh)
|
if (activeHigh)
|
||||||
@ -17,16 +21,16 @@ uint8_t RowScanner_Arduino::scan(uint16_t& rowEnd)
|
|||||||
{
|
{
|
||||||
digitalWrite(strobePin, LOW);
|
digitalWrite(strobePin, LOW);
|
||||||
}
|
}
|
||||||
delayMicroseconds(3); //time to stablize voltage
|
delayMicroseconds(3); //time to stablize voltage
|
||||||
|
|
||||||
//read all the column ports
|
//read all the column ports
|
||||||
for (uint8_t i=0; i < READ_PIN_COUNT; i++)
|
for (uint8_t i=0; i < READ_PIN_COUNT; i++)
|
||||||
{
|
{
|
||||||
if ( digitalRead(readPins[i]) == activeHigh )
|
if ( digitalRead(readPins[i]) == activeHigh )
|
||||||
{
|
{
|
||||||
rowState |= col;
|
rowState |= rowEnd;
|
||||||
}
|
}
|
||||||
col <<= 1;
|
rowEnd <<= 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
//strobe row off
|
//strobe row off
|
||||||
@ -38,7 +42,6 @@ uint8_t RowScanner_Arduino::scan(uint16_t& rowEnd)
|
|||||||
{
|
{
|
||||||
digitalWrite(strobePin, HIGH);
|
digitalWrite(strobePin, HIGH);
|
||||||
}
|
}
|
||||||
|
|
||||||
rowEnd = col;
|
|
||||||
return rowState;
|
return rowState;
|
||||||
}
|
}
|
||||||
|
@ -5,19 +5,16 @@
|
|||||||
#include <RowScannerInterface.h>
|
#include <RowScannerInterface.h>
|
||||||
#include <RowPort.h>
|
#include <RowPort.h>
|
||||||
#include <ColPort.h>
|
#include <ColPort.h>
|
||||||
/* rowPin > strobePins[]
|
|
||||||
replace port calls with
|
/* RowScanner_Arduino class uses Arduino pin numbers (no port name).
|
||||||
x pass 1: hard code pins for row0 and col6, init in setup()
|
*/
|
||||||
x pass 2: readPins[] array
|
|
||||||
pass 3: move calls to IC classes - Strobe_uC, Read_uC
|
|
||||||
pass 4: add IC classes Strobe_MCP23018, Read_MCP23018 */
|
|
||||||
class RowScanner_Arduino : public RowScannerInterface
|
class RowScanner_Arduino : public RowScannerInterface
|
||||||
{
|
{
|
||||||
private:
|
private:
|
||||||
static const bool activeHigh; //logic level of strobe pin: 0=activeLow, 1=activeHigh
|
static const bool activeHigh; //logic level of strobe pin: 0=activeLow, 1=activeHigh
|
||||||
const uint8_t strobePin; //Arduino pin number connected to this row
|
const uint8_t strobePin; //Arduino pin number connected to this row
|
||||||
const uint8_t* readPins; //array of read pins
|
const uint8_t* readPins; //array of read pin numbers
|
||||||
const uint8_t READ_PIN_COUNT;//todo READ_PIN_COUNT
|
const uint8_t READ_PIN_COUNT; //number of read pins
|
||||||
public:
|
public:
|
||||||
RowScanner_Arduino(const uint8_t strobePin,
|
RowScanner_Arduino(const uint8_t strobePin,
|
||||||
const uint8_t readPins[], const uint8_t READ_PIN_COUNT)
|
const uint8_t readPins[], const uint8_t READ_PIN_COUNT)
|
||||||
|
@ -37,14 +37,16 @@ uint8_t RowScanner_BitManipulation::scan(uint16_t& rowEnd)
|
|||||||
/*
|
/*
|
||||||
Copies column pins to rowState. Unused column pins are not copied.
|
Copies column pins to rowState. Unused column pins are not copied.
|
||||||
Sets rowEnd and returns rowState.
|
Sets rowEnd and returns rowState.
|
||||||
rowEnd is bitwise, where 1 bit corrsiponds to place immediatly after last key of row.
|
rowEnd is a bitwise row mask, one col per bit, where active col bit is 1.
|
||||||
rowEnd and rowMask are larger type than portMask so that they can not overflow.
|
At end of function, 1 bit marks place immediatly after last key of row.
|
||||||
|
rowEnd is a larger type than portMask so that it can not overflow.
|
||||||
*/
|
*/
|
||||||
uint8_t RowScanner_BitManipulation::getRowState(uint16_t& rowEnd)
|
uint8_t RowScanner_BitManipulation::getRowState(uint16_t& rowEnd)
|
||||||
{
|
{
|
||||||
uint16_t rowMask = 1; //bitwise, one col per bit, active col bit is 1
|
|
||||||
uint8_t rowState = 0; //bitwise, one key per bit, 1 means key is pressed
|
uint8_t rowState = 0; //bitwise, one key per bit, 1 means key is pressed
|
||||||
|
|
||||||
|
rowEnd = 1;
|
||||||
|
|
||||||
for (uint8_t i=0; i < colPortCount; i++) //for each col port
|
for (uint8_t i=0; i < colPortCount; i++) //for each col port
|
||||||
{
|
{
|
||||||
//bitwise colPins, 1 means pin is connected to column
|
//bitwise colPins, 1 means pin is connected to column
|
||||||
@ -64,15 +66,13 @@ uint8_t RowScanner_BitManipulation::getRowState(uint16_t& rowEnd)
|
|||||||
{
|
{
|
||||||
if (portMask & ~colPortState) //if pin detected a key press
|
if (portMask & ~colPortState) //if pin detected a key press
|
||||||
{
|
{
|
||||||
rowState |= rowMask; //set rowState bit for that key
|
rowState |= rowEnd; //set rowState bit for that key
|
||||||
}
|
}
|
||||||
|
|
||||||
rowMask <<= 1; //shift rowMask to next key
|
rowEnd <<= 1; //shift rowEnd to next key
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
rowEnd = rowMask;
|
|
||||||
|
|
||||||
return rowState;
|
return rowState;
|
||||||
}
|
}
|
||||||
|
@ -6,6 +6,8 @@
|
|||||||
#include <RowPort.h>
|
#include <RowPort.h>
|
||||||
#include <ColPort.h>
|
#include <ColPort.h>
|
||||||
|
|
||||||
|
/* RowScanner_BitManipulation uses bit manipulation to read all pins of one port.
|
||||||
|
*/
|
||||||
class RowScanner_BitManipulation : public RowScannerInterface
|
class RowScanner_BitManipulation : public RowScannerInterface
|
||||||
{
|
{
|
||||||
private:
|
private:
|
||||||
|
Reference in New Issue
Block a user