How do I change the default LED pin for displaying uploading

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I made a board for my project based on Arduino Pro Mini. The problem is, that I had to put the LED on pin 4 instead of pin 13.

What setting do I have to change to make pin 4 the default one? Or do I have to write my own Board Library?

edited Aug 14 at 9:27

Greenonline

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asked Aug 14 at 9:04

AntonÃn Gazda

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up vote
2
down vote

favorite

I made a board for my project based on Arduino Pro Mini. The problem is, that I had to put the LED on pin 4 instead of pin 13.

What setting do I have to change to make pin 4 the default one? Or do I have to write my own Board Library?

edited Aug 14 at 9:27

Greenonline

1,90941539

asked Aug 14 at 9:04

AntonÃn Gazda

133

add a commentÂ |Â

up vote
2
down vote

favorite

I made a board for my project based on Arduino Pro Mini. The problem is, that I had to put the LED on pin 4 instead of pin 13.

What setting do I have to change to make pin 4 the default one? Or do I have to write my own Board Library?

edited Aug 14 at 9:27

Greenonline

1,90941539

asked Aug 14 at 9:04

AntonÃn Gazda

133

I made a board for my project based on Arduino Pro Mini. The problem is, that I had to put the LED on pin 4 instead of pin 13.

What setting do I have to change to make pin 4 the default one? Or do I have to write my own Board Library?

edited Aug 14 at 9:27

Greenonline

1,90941539

asked Aug 14 at 9:04

AntonÃn Gazda

133

edited Aug 14 at 9:27

Greenonline

1,90941539

edited Aug 14 at 9:27

Greenonline

1,90941539

edited Aug 14 at 9:27

Greenonline

1,90941539

asked Aug 14 at 9:04

AntonÃn Gazda

133

asked Aug 14 at 9:04

AntonÃn Gazda

133

asked Aug 14 at 9:04

AntonÃn Gazda

133

add a commentÂ |Â

2 Answers
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3
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The blinking while uploading makes the bootloader. Arduino Mini uses Optiboot. The source codes are on GitHub. You would need to change the pin in pin_defs.h and make the bootloader. Then flash it to the 328p with a programmer over ICSP.

Details what to change are in Greenonline's answer.

edited Aug 14 at 13:54

Greenonline

1,90941539

answered Aug 14 at 9:23

Juraj

3,4211317

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up vote
2
down vote

Following on from Juraj's answer:

The blinking while uploading makes the bootloader. Arduino Mini uses
Optiboot. The source codes are on GitHub. You would need to
change the pin in pin_defs.h and make the bootloader. Then flash it to
the 328p with a programmer over ICSP.

The line that you need to change in pin_defs.h is line number 27:

#define LED B5

As you can see it is currently set to B5. This is the fifth bit in port B which corresponds to pin 13

Pin 4 corresponds to PORTD bit 4, so the line would become

#define LED D4

The Arduino digital pins are connected to three different banks of 8 bits, known as ports (PORTD, PORTB and PORTC`). To see their relation, refer to this table from Arduino Playground - Pins

edited Aug 14 at 13:54

answered Aug 14 at 9:37

Greenonline

1,90941539

I copied my answer as intro into this answer
â€“Â Juraj
Aug 14 at 12:15

Ok, thanks. I'm not sure it was necessary, unless you planned on deleting your answer. However, I've added a link back to yours to reference the quote, and it makes a bit more sense that way. Thanks again :-).
â€“Â Greenonline
Aug 14 at 13:56

add a commentÂ |Â

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
3
down vote

accepted

Details what to change are in Greenonline's answer.

edited Aug 14 at 13:54

Greenonline

1,90941539

answered Aug 14 at 9:23

Juraj

3,4211317

add a commentÂ |Â

up vote
3
down vote

accepted

Details what to change are in Greenonline's answer.

edited Aug 14 at 13:54

Greenonline

1,90941539

answered Aug 14 at 9:23

Juraj

3,4211317

add a commentÂ |Â

up vote
3
down vote

accepted

Details what to change are in Greenonline's answer.

edited Aug 14 at 13:54

Greenonline

1,90941539

answered Aug 14 at 9:23

Juraj

3,4211317

Details what to change are in Greenonline's answer.

edited Aug 14 at 13:54

Greenonline

1,90941539

answered Aug 14 at 9:23

Juraj

3,4211317

edited Aug 14 at 13:54

Greenonline

1,90941539

edited Aug 14 at 13:54

Greenonline

1,90941539

edited Aug 14 at 13:54

Greenonline

1,90941539

answered Aug 14 at 9:23

Juraj

3,4211317

answered Aug 14 at 9:23

Juraj

3,4211317

answered Aug 14 at 9:23

Juraj

3,4211317

add a commentÂ |Â

up vote
2
down vote

Following on from Juraj's answer:

The blinking while uploading makes the bootloader. Arduino Mini uses
Optiboot. The source codes are on GitHub. You would need to
change the pin in pin_defs.h and make the bootloader. Then flash it to
the 328p with a programmer over ICSP.

The line that you need to change in pin_defs.h is line number 27:

#define LED B5

As you can see it is currently set to B5. This is the fifth bit in port B which corresponds to pin 13

Pin 4 corresponds to PORTD bit 4, so the line would become

#define LED D4

The Arduino digital pins are connected to three different banks of 8 bits, known as ports (PORTD, PORTB and PORTC`). To see their relation, refer to this table from Arduino Playground - Pins

edited Aug 14 at 13:54

answered Aug 14 at 9:37

Greenonline

1,90941539

I copied my answer as intro into this answer
â€“Â Juraj
Aug 14 at 12:15

Ok, thanks. I'm not sure it was necessary, unless you planned on deleting your answer. However, I've added a link back to yours to reference the quote, and it makes a bit more sense that way. Thanks again :-).
â€“Â Greenonline
Aug 14 at 13:56

add a commentÂ |Â

up vote
2
down vote

Following on from Juraj's answer:

The blinking while uploading makes the bootloader. Arduino Mini uses
Optiboot. The source codes are on GitHub. You would need to
change the pin in pin_defs.h and make the bootloader. Then flash it to
the 328p with a programmer over ICSP.

The line that you need to change in pin_defs.h is line number 27:

#define LED B5

As you can see it is currently set to B5. This is the fifth bit in port B which corresponds to pin 13

Pin 4 corresponds to PORTD bit 4, so the line would become

#define LED D4

The Arduino digital pins are connected to three different banks of 8 bits, known as ports (PORTD, PORTB and PORTC`). To see their relation, refer to this table from Arduino Playground - Pins

edited Aug 14 at 13:54

answered Aug 14 at 9:37

Greenonline

1,90941539

I copied my answer as intro into this answer
â€“Â Juraj
Aug 14 at 12:15

Ok, thanks. I'm not sure it was necessary, unless you planned on deleting your answer. However, I've added a link back to yours to reference the quote, and it makes a bit more sense that way. Thanks again :-).
â€“Â Greenonline
Aug 14 at 13:56

add a commentÂ |Â

up vote
2
down vote

Following on from Juraj's answer:

The blinking while uploading makes the bootloader. Arduino Mini uses
Optiboot. The source codes are on GitHub. You would need to
change the pin in pin_defs.h and make the bootloader. Then flash it to
the 328p with a programmer over ICSP.

The line that you need to change in pin_defs.h is line number 27:

#define LED B5

As you can see it is currently set to B5. This is the fifth bit in port B which corresponds to pin 13

Pin 4 corresponds to PORTD bit 4, so the line would become

#define LED D4

The Arduino digital pins are connected to three different banks of 8 bits, known as ports (PORTD, PORTB and PORTC`). To see their relation, refer to this table from Arduino Playground - Pins

edited Aug 14 at 13:54

answered Aug 14 at 9:37

Greenonline

1,90941539

Following on from Juraj's answer:

The blinking while uploading makes the bootloader. Arduino Mini uses
Optiboot. The source codes are on GitHub. You would need to
change the pin in pin_defs.h and make the bootloader. Then flash it to
the 328p with a programmer over ICSP.

The line that you need to change in pin_defs.h is line number 27:

#define LED B5

As you can see it is currently set to B5. This is the fifth bit in port B which corresponds to pin 13

Pin 4 corresponds to PORTD bit 4, so the line would become

#define LED D4

The Arduino digital pins are connected to three different banks of 8 bits, known as ports (PORTD, PORTB and PORTC`). To see their relation, refer to this table from Arduino Playground - Pins

edited Aug 14 at 13:54

answered Aug 14 at 9:37

Greenonline

1,90941539

edited Aug 14 at 13:54

answered Aug 14 at 9:37

Greenonline

1,90941539

answered Aug 14 at 9:37

Greenonline

1,90941539

answered Aug 14 at 9:37

Greenonline

1,90941539

I copied my answer as intro into this answer
â€“Â Juraj
Aug 14 at 12:15

Ok, thanks. I'm not sure it was necessary, unless you planned on deleting your answer. However, I've added a link back to yours to reference the quote, and it makes a bit more sense that way. Thanks again :-).
â€“Â Greenonline
Aug 14 at 13:56

add a commentÂ |Â

I copied my answer as intro into this answer
â€“Â Juraj
Aug 14 at 12:15

Ok, thanks. I'm not sure it was necessary, unless you planned on deleting your answer. However, I've added a link back to yours to reference the quote, and it makes a bit more sense that way. Thanks again :-).
â€“Â Greenonline
Aug 14 at 13:56

I copied my answer as intro into this answer
â€“Â Juraj
Aug 14 at 12:15

Ok, thanks. I'm not sure it was necessary, unless you planned on deleting your answer. However, I've added a link back to yours to reference the quote, and it makes a bit more sense that way. Thanks again :-).
â€“Â Greenonline
Aug 14 at 13:56

add a commentÂ |Â

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