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moved PCA9655E port commands from initialization list to Wire.write()

tags/v0.6.0
wolfv6 7 years ago
parent
5c8890312d
commit
1f6b052a21
5 changed files with 10 additions and 28 deletions
Unified View Show Diff Stats
  1. 3
    11
      src/PortRead_PCA9655E.cpp
  2. 2
    4
      src/PortRead_PCA9655E.h
  3. 2
    0
      src/PortWrite_MCP23S17.h
  4. 2
    8
      src/PortWrite_PCA9655E.cpp
  5. 1
    5
      src/PortWrite_PCA9655E.h

+ 3
- 11
src/PortRead_PCA9655E.cpp View File

#include "PortRead_PCA9655E.h" #include "PortRead_PCA9655E.h"
/*
configures column port's configuration, input, and pins.
*/
PortRead_PCA9655E::PortRead_PCA9655E (PortIOE& port, const uint8_t readPins)
: port(port), readPins(readPins),
configurationByteCommand(port.num + 6), inputByteCommand(port.num)
{}
void PortRead_PCA9655E::begin() void PortRead_PCA9655E::begin()
{ {
Wire.beginTransmission(port.DEVICE_ADDR); Wire.beginTransmission(port.DEVICE_ADDR);
Wire.write(configurationByteCommand);
Wire.write(port.num + 6); //configuration byte command
Wire.write(readPins); //0=configure as output (for LED), 1=configure as input (for read) Wire.write(readPins); //0=configure as output (for LED), 1=configure as input (for read)
Wire.endTransmission(); Wire.endTransmission();
} }
uint8_t PortRead_PCA9655E::read() uint8_t PortRead_PCA9655E::read()
{ {
Wire.beginTransmission(port.DEVICE_ADDR); Wire.beginTransmission(port.DEVICE_ADDR);
Wire.write(inputByteCommand); //input immediately before requestFrom
Wire.write(port.num); //input byte command
Wire.endTransmission(false); //PCA9655E needs false to send a restart Wire.endTransmission(false); //PCA9655E needs false to send a restart
Wire.requestFrom(port.DEVICE_ADDR, 1u); //request one byte from input port
Wire.requestFrom(port.DEVICE_ADDR, 1u); //request one byte from input port
return Wire.read(); return Wire.read();
} }

+ 2
- 4
src/PortRead_PCA9655E.h View File

private: private:
PortIOE& port; PortIOE& port;
const uint8_t readPins; //bitwise pin configuration, 1 means read pin const uint8_t readPins; //bitwise pin configuration, 1 means read pin
const uint8_t configurationByteCommand;
const uint8_t inputByteCommand;
public: public:
//The constructor initialization list is in .cpp
PortRead_PCA9655E(PortIOE& port, const uint8_t readPins);
PortRead_PCA9655E (PortIOE& port, const uint8_t readPins)
: port(port), readPins(readPins) {}
void begin(); void begin();
virtual uint8_t read(); virtual uint8_t read();
}; };

+ 2
- 0
src/PortWrite_MCP23S17.h View File

MCP23S17 data sheet MCP23S17 data sheet
---------------- ----------------
http://www.onsemi.com/pub_link/Collateral/MCP23S17-D.PDF http://www.onsemi.com/pub_link/Collateral/MCP23S17-D.PDF
WARNING: This class hardcodes Slave Select to Arduino Pin 10 to avoid the speed penalty of digitalWrite
*/ */
class PortWrite_MCP23S17 : public PortWriteInterface class PortWrite_MCP23S17 : public PortWriteInterface

+ 2
- 8
src/PortWrite_PCA9655E.cpp View File

#include "PortWrite_PCA9655E.h" #include "PortWrite_PCA9655E.h"
/*
configures column port's configuration and output.
*/
PortWrite_PCA9655E::PortWrite_PCA9655E(PortIOE& port)
: port(port), configurationByteCommand(port.num + 6), outputByteCommand(port.num + 2) {}
/* /*
If PortRead_PCA9655E is instantiated on the same port, do NOT use PortWrite_PCA9655E::begin(). If PortRead_PCA9655E is instantiated on the same port, do NOT use PortWrite_PCA9655E::begin().
Otherwise readPins could be overwritten. Otherwise readPins could be overwritten.
void PortWrite_PCA9655E::begin() void PortWrite_PCA9655E::begin()
{ {
Wire.beginTransmission(port.DEVICE_ADDR); Wire.beginTransmission(port.DEVICE_ADDR);
Wire.write(configurationByteCommand);
Wire.write(port.num + 6); //configuration byte command
Wire.write(0); //0=configure as output (for strobe pins and LED) Wire.write(0); //0=configure as output (for strobe pins and LED)
Wire.endTransmission(); Wire.endTransmission();
} }
} }
Wire.beginTransmission(port.DEVICE_ADDR); Wire.beginTransmission(port.DEVICE_ADDR);
Wire.write(outputByteCommand);
Wire.write(port.num + 2); //output Byte command
Wire.write(port.outputVal); Wire.write(port.outputVal);
Wire.endTransmission(); Wire.endTransmission();
} }

+ 1
- 5
src/PortWrite_PCA9655E.h View File

{ {
private: private:
PortIOE& port; PortIOE& port;
const uint8_t configurationByteCommand;
const uint8_t outputByteCommand;
public: public:
//The constructor initialization list is in .cpp
PortWrite_PCA9655E(PortIOE& port);
PortWrite_PCA9655E(PortIOE& port) : port(port) {}
void begin(); void begin();
virtual void write(const uint8_t pin, const bool level); virtual void write(const uint8_t pin, const bool level);