wolfv6
7 years ago
5 changed files with 36 additions and 7 deletions
+ 1
- 1
src/Port_MCP23017.h
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| #include <Wire.h> | #include <Wire.h> | ||||
| #include <PortInterface.h> | #include <PortInterface.h> | ||||
| /* | |||||
| /* Port_MCP23017 | |||||
| write pins are connected to matrix Row (strobe pin) or LED. | write pins are connected to matrix Row (strobe pin) or LED. | ||||
| readPins are connected to matrix column to read which keys are pressed. | readPins are connected to matrix column to read which keys are pressed. | ||||
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src/Port_MCP23018.h
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| #ifndef PORT_MCP23018_H | #ifndef PORT_MCP23018_H | ||||
| #define PORT_MCP23018_H | #define PORT_MCP23018_H | ||||
| #include "Port_MCP23017.h" | #include "Port_MCP23017.h" | ||||
| /* | |||||
| /* Port_MCP23018 | |||||
| write pins are connected to matrix Row (strobe pin) or LED. | write pins are connected to matrix Row (strobe pin) or LED. | ||||
| readPins are connected to matrix column to read which keys are pressed. | readPins are connected to matrix column to read which keys are pressed. | ||||
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src/Port_MCP23S17.h
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| #include <SPI.h> | #include <SPI.h> | ||||
| #include <PortInterface.h> | #include <PortInterface.h> | ||||
| /* | |||||
| /* Port_MCP23S17 | |||||
| write pins are connected to matrix Row (strobe pin) or LED. | write pins are connected to matrix Row (strobe pin) or LED. | ||||
| readPins are connected to matrix column to read which keys are pressed. | readPins are connected to matrix column to read which keys are pressed. | ||||
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src/Port_MCP23S18.h
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| #ifndef PORT_MCP23S18_H | |||||
| #define PORT_MCP23S18_H | |||||
| #include "Port_MCP23S17.h" | |||||
| /* Port_MCP23S18 has not been tested. | |||||
| write pins are connected to matrix Row (strobe pin) or LED. | |||||
| readPins are connected to matrix column to read which keys are pressed. | |||||
| Port_MCP23S18 can only be active low (Scanner_IOE::activeState = LOW). | |||||
| Open-drain active high would not work because pull down resistors have no effect on sink. | |||||
| https://en.wikipedia.org/wiki/Open_collector | |||||
| Use LED_PortOpenDrain class for indicator LEDs. | |||||
| Example instantiation: | |||||
| const uint8_t IOE_ADDR = 0x20; //MCP23S18 address pin grounded | |||||
| Port_MCP23S18 portB(IOE_ADDR, 1, 0); //all pins are set to output for strobes and LEDs | |||||
| Port_MCP23S18 portA(IOE_ADDR, 0, 1<<0 | 1<<1 ); //pin 0 and pin 1 are set to input for reading, | |||||
| //remaining pins can be used for LEDs | |||||
| Diode orientation | |||||
| ---------------- | |||||
| Diode orientation is explained in keybrd_library_user_guide.md > Diode orientation | |||||
| */ | |||||
| class Port_MCP23S18 : public Port_MCP23S17 | |||||
| { | |||||
| public: | |||||
| Port_MCP23S18(const uint8_t deviceAddr, const uint8_t portNum, const uint8_t readPins) | |||||
| : Port_MCP23S17(deviceAddr, portNum, readPins) {} | |||||
| }; | |||||
| #endif |
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src/Port_PCA9655E.h
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| #include <Wire.h> | #include <Wire.h> | ||||
| #include <PortInterface.h> | #include <PortInterface.h> | ||||
| /* | |||||
| /* Port_PCA9655E | |||||
| write pins are connected to matrix Row (strobe pin) or LED. | write pins are connected to matrix Row (strobe pin) or LED. | ||||
| readPins are connected to matrix column to read which keys are pressed. | readPins are connected to matrix column to read which keys are pressed. | ||||
| ---------------- | ---------------- | ||||
| Diode orientation is explained in keybrd_library_user_guide.md > Diode orientation | Diode orientation is explained in keybrd_library_user_guide.md > Diode orientation | ||||
| PCA9655E data sheet | |||||
| ---------------- | |||||
| http://www.onsemi.com/pub_link/Collateral/PCA9655E-D.PDF | |||||
| */ | */ | ||||
| class Port_PCA9655E : public PortInterface | class Port_PCA9655E : public PortInterface |