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Arduino Pro Micro - switch off LEDs

All the differences between Arduinos: Pro Mini & Pro MicroPro Micro clone worked fine, now RxLED stays on and can't program itArduino Pro Micro troublesPro Micro - Measuring voltage between two pins, without using GNDAvoid a Pro Micro waking up a PC?PS2 Keyboard and sending keystrokes between a Leonardo and several pro micros3.3 V Pro Micro clones flashing LEDs after 1200 bit/s touchArduino pro micro might be brickedArduino Pro Micro TX and RX leds flash quikly while power drawn from VCC pinKeyboard.h: No such file or directory - Arduino pro micro (leonardo)

4

I am using a Arduino Pro Micro as a keyboard (USB HID device). Each time I press a key, the RX LED and TX LED light up. Can I switch them off in software?

arduino-pro-micro

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asked Apr 13 at 12:59

qubitqubit

6815

add a comment | 

4

I am using a Arduino Pro Micro as a keyboard (USB HID device). Each time I press a key, the RX LED and TX LED light up. Can I switch them off in software?

arduino-pro-micro

share|improve this question

asked Apr 13 at 12:59

qubitqubit

6815

add a comment | 

I am using a Arduino Pro Micro as a keyboard (USB HID device). Each time I press a key, the RX LED and TX LED light up. Can I switch them off in software?

arduino-pro-micro

share|improve this question

asked Apr 13 at 12:59

qubitqubit

6815

share|improve this question

asked Apr 13 at 12:59

qubitqubit

6815

share|improve this question

asked Apr 13 at 12:59

qubitqubit

6815

asked Apr 13 at 12:59

qubitqubit

6815

asked Apr 13 at 12:59

qubitqubit

6815

2 Answers
2

active

oldest

votes

2

Kind of.

You would need to edit the pins_arduino.h file for the Pro Micro board to change the definitions of the TXLED0, TXLED1, RXLED0, RXLED1 and TX_RX_LED_INIT macros.

You want them to all be defined, but empty.

#undef TXLED0
#undef TXLED1
#undef RXLED0
#undef RXLED1
#undef TX_RX_LED_INIT

#define TXLED0
#define TXLED1
#define RXLED0
#define RXLED1
#define TX_RX_LED_INIT

That will remove the current definitions, and then create new empty definitions. Without the empty definitions, you will get errors when compiling.

share|improve this answer

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

add a comment | 

3

Kind of.

You don't have to change pins_arduino.h.

Try the LED_BUILTIN_TX and the LED_BUILTIN_RX.

The pins are turned on and off by the code for the SerialUSB port. That can not be changed without changing the Arduino libraries. Setting that pin to INPUT in your sketch in the setup() function will turn them off:

pinMode(LED_BUILTIN_TX,INPUT);
pinMode(LED_BUILTIN_RX,INPUT);

If you have troubles with the LED_BUILTIN_TX and the LED_BUILTIN_RX, then you can use this as well:

bitClear(DDRD,5);
bitClear(DDRB,0);

The code for the SerialUSB port still writes to that pin, but once they are set as INPUT, that code will turn on and off the pullup resistor. That is no problem since those leds are connected to VCC.

To turn them on is also possible, but then those pins needs to be OUTPUT and LOW. They will not stay on when the SerialUSB port is used.

share|improve this answer

edited Apr 13 at 21:37

answered Apr 13 at 14:15

JotJot

2,9651619

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2

Kind of.

You would need to edit the pins_arduino.h file for the Pro Micro board to change the definitions of the TXLED0, TXLED1, RXLED0, RXLED1 and TX_RX_LED_INIT macros.

You want them to all be defined, but empty.

#undef TXLED0
#undef TXLED1
#undef RXLED0
#undef RXLED1
#undef TX_RX_LED_INIT

#define TXLED0
#define TXLED1
#define RXLED0
#define RXLED1
#define TX_RX_LED_INIT

That will remove the current definitions, and then create new empty definitions. Without the empty definitions, you will get errors when compiling.

share|improve this answer

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

add a comment | 

2

Kind of.

You would need to edit the pins_arduino.h file for the Pro Micro board to change the definitions of the TXLED0, TXLED1, RXLED0, RXLED1 and TX_RX_LED_INIT macros.

You want them to all be defined, but empty.

#undef TXLED0
#undef TXLED1
#undef RXLED0
#undef RXLED1
#undef TX_RX_LED_INIT

#define TXLED0
#define TXLED1
#define RXLED0
#define RXLED1
#define TX_RX_LED_INIT

That will remove the current definitions, and then create new empty definitions. Without the empty definitions, you will get errors when compiling.

share|improve this answer

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

add a comment | 

Kind of.

You would need to edit the pins_arduino.h file for the Pro Micro board to change the definitions of the TXLED0, TXLED1, RXLED0, RXLED1 and TX_RX_LED_INIT macros.

You want them to all be defined, but empty.

#undef TXLED0
#undef TXLED1
#undef RXLED0
#undef RXLED1
#undef TX_RX_LED_INIT

#define TXLED0
#define TXLED1
#define RXLED0
#define RXLED1
#define TX_RX_LED_INIT

That will remove the current definitions, and then create new empty definitions. Without the empty definitions, you will get errors when compiling.

share|improve this answer

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

#undef TXLED0
#undef TXLED1
#undef RXLED0
#undef RXLED1
#undef TX_RX_LED_INIT

#define TXLED0
#define TXLED1
#define RXLED0
#define RXLED1
#define TX_RX_LED_INIT

share|improve this answer

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

answered Apr 13 at 13:08

Majenko♦Majenko

69.7k43582

3

Kind of.

You don't have to change pins_arduino.h.

Try the LED_BUILTIN_TX and the LED_BUILTIN_RX.

The pins are turned on and off by the code for the SerialUSB port. That can not be changed without changing the Arduino libraries. Setting that pin to INPUT in your sketch in the setup() function will turn them off:

pinMode(LED_BUILTIN_TX,INPUT);
pinMode(LED_BUILTIN_RX,INPUT);

If you have troubles with the LED_BUILTIN_TX and the LED_BUILTIN_RX, then you can use this as well:

bitClear(DDRD,5);
bitClear(DDRB,0);

The code for the SerialUSB port still writes to that pin, but once they are set as INPUT, that code will turn on and off the pullup resistor. That is no problem since those leds are connected to VCC.

To turn them on is also possible, but then those pins needs to be OUTPUT and LOW. They will not stay on when the SerialUSB port is used.

share|improve this answer

edited Apr 13 at 21:37

answered Apr 13 at 14:15

JotJot

2,9651619

add a comment | 

3

Kind of.

You don't have to change pins_arduino.h.

Try the LED_BUILTIN_TX and the LED_BUILTIN_RX.

The pins are turned on and off by the code for the SerialUSB port. That can not be changed without changing the Arduino libraries. Setting that pin to INPUT in your sketch in the setup() function will turn them off:

pinMode(LED_BUILTIN_TX,INPUT);
pinMode(LED_BUILTIN_RX,INPUT);

If you have troubles with the LED_BUILTIN_TX and the LED_BUILTIN_RX, then you can use this as well:

bitClear(DDRD,5);
bitClear(DDRB,0);

The code for the SerialUSB port still writes to that pin, but once they are set as INPUT, that code will turn on and off the pullup resistor. That is no problem since those leds are connected to VCC.

To turn them on is also possible, but then those pins needs to be OUTPUT and LOW. They will not stay on when the SerialUSB port is used.

share|improve this answer

edited Apr 13 at 21:37

answered Apr 13 at 14:15

JotJot

2,9651619

add a comment | 

Kind of.

You don't have to change pins_arduino.h.

Try the LED_BUILTIN_TX and the LED_BUILTIN_RX.

The pins are turned on and off by the code for the SerialUSB port. That can not be changed without changing the Arduino libraries. Setting that pin to INPUT in your sketch in the setup() function will turn them off:

pinMode(LED_BUILTIN_TX,INPUT);
pinMode(LED_BUILTIN_RX,INPUT);

If you have troubles with the LED_BUILTIN_TX and the LED_BUILTIN_RX, then you can use this as well:

bitClear(DDRD,5);
bitClear(DDRB,0);

The code for the SerialUSB port still writes to that pin, but once they are set as INPUT, that code will turn on and off the pullup resistor. That is no problem since those leds are connected to VCC.

To turn them on is also possible, but then those pins needs to be OUTPUT and LOW. They will not stay on when the SerialUSB port is used.

share|improve this answer

edited Apr 13 at 21:37

answered Apr 13 at 14:15

JotJot

2,9651619

pinMode(LED_BUILTIN_TX,INPUT);
pinMode(LED_BUILTIN_RX,INPUT);

bitClear(DDRD,5);
bitClear(DDRB,0);

share|improve this answer

edited Apr 13 at 21:37

answered Apr 13 at 14:15

JotJot

2,9651619

answered Apr 13 at 14:15

JotJot

2,9651619

answered Apr 13 at 14:15

JotJot

2,9651619