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add LED_PortOpenDrain

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This commit is contained in:
wolfv6 2016-11-15 20:01:42 -07:00
parent a3f2261625
commit 6a787b4155
4 changed files with 54 additions and 3 deletions
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4
examples/keybrd_MCP23018/keybrd_MCP23018.ino
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@ -39,7 +39,7 @@ DESTINATION PIN PIN_NUMBER PIN DESTINATION
//right matrix //right matrix
#include <Port_MCP23018.h> #include <Port_MCP23018.h>
#include <Scanner_IOE.h> #include <Scanner_IOE.h>
#include <LED_Port.h> #include <LED_PortOpenDrain.h>
// ============ SPEED CONFIGURATION ============ // ============ SPEED CONFIGURATION ============
ScanDelay scanDelay(9000); ScanDelay scanDelay(9000);
@ -60,7 +60,7 @@ Port_MCP23018 portB(IOE_ADDR, 1, 0);
Scanner_IOE scanner_R(LOW, portB, portA); Scanner_IOE scanner_R(LOW, portB, portA);
// ================= RIGHT LED ================= // ================= RIGHT LED =================
LED_Port LED_capsLck(portA, 1<<7); LED_PortOpenDrain LED_capsLck(portA, 1<<7);
// =================== CODES =================== // =================== CODES ===================
Code_Sc s_a(KEY_A); Code_Sc s_a(KEY_A);

5
src/LED_Port.h
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@ -5,9 +5,12 @@
#include <LEDInterface.h> #include <LEDInterface.h>
#include <PortWriteInterface.h> #include <PortWriteInterface.h>
/* An LED_Port object is an I/O expander pin that is connected to an LED indicator light. /* An LED_Port object is an I/O expander output pin that is connected to an LED indicator light.
LED_Port functions turn LED on and off. LED_Port functions turn LED on and off.
This is for push-pull ouput pins.
For LEDs connected to open drain output types, use LED_Port class.
Example initialization: Example initialization:
const uint8_t IOE_ADDR = 0x20; const uint8_t IOE_ADDR = 0x20;
Port_MCP23S17 portA(IOE_ADDR, 0, 1<<0 | 1<<1 ); Port_MCP23S17 portA(IOE_ADDR, 0, 1<<0 | 1<<1 );

12
src/LED_PortOpenDrain.cpp Normal file
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@ -0,0 +1,12 @@
#include "LED_PortOpenDrain.h"
/* functions are like LED_Port, but writeLow() writeHigh() are swapped.
*/
void LED_PortOpenDrain::on()
{
refPort.writeLow(pin);
}
void LED_PortOpenDrain::off()
{
refPort.writeHigh(pin);
}

36
src/LED_PortOpenDrain.h Normal file
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@ -0,0 +1,36 @@
#ifndef LED_PORT_H
#define LED_PORT_H
#include <Arduino.h>
#include <inttypes.h>
#include <LEDInterface.h>
#include <PortWriteInterface.h>
/* An LED_PortOpenDrain object is an I/O expander ouput pin that is connected to an LED.
LED_PortOpenDrain functions turn LED on and off.
This is for open drain ouput pins.
For LEDs connected to push-pull output types, use LED_Port class.
Example initialization:
const uint8_t IOE_ADDR = 0x20;
Port_MCP23S17 portA(IOE_ADDR, 0, 1<<0 | 1<<1 );
LED_PortOpenDrain LED_fn(portA, 1<<5);
Example initialization:
Port_ShiftRegs shiftRegs(8);
LED_PortOpenDrain LED_fn(shiftRegs, 1<<6);
*/
class LED_PortOpenDrain : public LEDInterface
{
private:
PortWriteInterface& refPort;
const uint8_t pin; //bit pattern, 1 is pin connected to LED
public:
LED_PortOpenDrain(PortWriteInterface& refPort, const uint8_t pin)
: refPort(refPort), pin(pin) {}
virtual void on();
virtual void off();
};
#endif