arduino:arduino_without_a_bootloader
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arduino:arduino_without_a_bootloader [2020/02/27 18:18] – [Cursed is the bootloader] mithat | arduino:arduino_without_a_bootloader [2021/04/22 00:53] – [Procedures] mithat | ||
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Another reason to not use a bootloader is that the startup time is critical. The Arduino bootloader introduces about a second and a half delay between power-up/ | Another reason to not use a bootloader is that the startup time is critical. The Arduino bootloader introduces about a second and a half delay between power-up/ | ||
- | Yet another situation where you might not want a bootloader is if you have lowered or disabled the [[https:// | + | Yet another situation where you might not want a bootloader is if you have lowered or disabled the [[https:// |
There are situations apart from these where you wouldn' | There are situations apart from these where you wouldn' | ||
===== Hardware ===== | ===== Hardware ===== | ||
- | You're going to need a device you want to program (e.g., an Arduino board) and a device with which you will do the programming (a.k.a., the programmer). You can see the complete list of programmers supported by the Arduino framework by looking at the list available under //Tools > Programmer: " | + | To program an ATmega328P without a bootloader, you're going to need a device you want to program (e.g., an Arduino board) and a device with which you will do the programming (i.e., the programmer). You can see the complete list of programmers supported by the Arduino framework by looking at the list available under //Tools > Programmer: " |
{{ : | {{ : | ||
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That's a lot of options! | That's a lot of options! | ||
- | Below, I cover a few cases to get you started. Most of these use the USBtinyISP.((As near as I can tell, the original source of the USBtinyISP design is Dick Streefland' | + | ==== USBtinyISP |
- | The original USBtinyISP | + | Below, I cover a few cases to get you started. Most of these use the USBtinyISP.((As near as I can tell, the original |
- | If you are using a USBtinyISP clone, there' | + | The original USBtinyISP has a built-in 3x2 IDC cable that carries the signals needed for ISP (in-system programming) and a 5x2 IDC cable that carries the same signals but in a different layout. |
- | Depending on the board you are programming, | + | Depending on the board you are programming, |
<WRAP center round tip 80%> | <WRAP center round tip 80%> | ||
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</ | </ | ||
===== Procedures ===== | ===== Procedures ===== | ||
- | As is the case when uploading a program to your Arduino using a bootloader, when uploading a program using a programmer you must specify what the target board is. So when doing any of the following, make sure //Tools > Board// and //Tools > Processor// (or other board options) are set correctly for your board. | + | As is the case when uploading a program to your Arduino using a bootloader, when uploading a program using a programmer you must specify what the target board is. So when doing the following, make sure //Tools > Board// and //Tools > Processor// (or other board options) are set correctly for your board. |
Now is also a good time to mention a significant caveat about using a programmer as described here. <WRAP center round important 80%> | Now is also a good time to mention a significant caveat about using a programmer as described here. <WRAP center round important 80%> | ||
- | Using a programmer involves making connections between the programmer and the Arduino' | + | Using a programmer involves making connections between the programmer and the Arduino' |
- | + | ||
- | However, | + | |
</ | </ | ||
- | Yes, this is yet another way the bootloader makes your life simpler. | + | This can be bit of a drag and is yet another way the bootloader makes your life simpler. |
With that out of the way, let's move on to some specific cases. | With that out of the way, let's move on to some specific cases. |
arduino/arduino_without_a_bootloader.txt · Last modified: 2022/05/30 05:46 by mithat