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RIOT/boards/arduino-nano/doc.txt

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boards: Add support for the Arduino Nano The Arduino Nano board is the cheapest member of the Arduino family and used the same MCU as the Arduino Uno. It differs in the form factor (the Nano is much smaller), it uses an integrated FT232RL TTL adapter instead of an ATmega16u2 to provide access to the serial console via USB, and it uses a different bootloader (which occupies 2 KiB of the 32 KiB flash instead of 0.5 KiB occupied on the Arduino Uno). This commit mostly copy pastes code from the Arduino Uno.
2018-07-04 22:26:10 +02:00
/**
@defgroup boards_arduino-nano Arduino Nano
@ingroup boards
@brief Support for the Arduino Nano board
## Overview
The Arduino Nano is the cheapest member of the Arduino family. It is based on
Atmel's AVR architecture and sports an ATmega328p MCU. It is like many Arduinos
extensible by using shields.
### MCU
| MCU | ATmega328p |
|:------------- |:--------------------------------------------- |
| Family | AVR/ATmega |
| Vendor | Atmel |
| RAM | 2 KiB |
| Flash | 32 KiB (2 KiB reserved for the bootloader) |
| Frequency | 16 MHz |
| Timers | 3 (2x 8bit, 1x 16bit) |
| ADCs | 6 analog input pins |
| UARTs | 1 |
| SPIs | 1 |
| I2Cs | 1 (called TWI) |
| Vcc | 5.0V |
| MCU Datasheet | [ATmega328p datasheet](http://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061A.pdf) |
| Board Manual | [Board Manual](https://www.arduino.cc/en/uploads/Main/ArduinoNanoManual23.pdf) |
boards/arduino-nano: Refactor avrdude conf - Use the common logic to translate from a bootloader to concrete flasher flags - Extended documentation on how to use optiboot as alternative bootloader, as the stock bootloader is affected by a bug preventing the use of RIOT's pm_reboot() implementation
2020-02-10 14:59:24 +01:00
## Flashing the Device
boards: Add support for the Arduino Nano The Arduino Nano board is the cheapest member of the Arduino family and used the same MCU as the Arduino Uno. It differs in the form factor (the Nano is much smaller), it uses an integrated FT232RL TTL adapter instead of an ATmega16u2 to provide access to the serial console via USB, and it uses a different bootloader (which occupies 2 KiB of the 32 KiB flash instead of 0.5 KiB occupied on the Arduino Uno). This commit mostly copy pastes code from the Arduino Uno.
2018-07-04 22:26:10 +02:00
Flashing RIOT on the Arduino Nano is quite straight forward, just connect your
Arduino Nano via the USB connector to your host computer and type:
`make BOARD=arduino-nano flash`
This should take care of everything!
We use the open `avrdude` tool to write the new code into the ATmega328p's
flash
boards/arduino-nano: Refactor avrdude conf - Use the common logic to translate from a bootloader to concrete flasher flags - Extended documentation on how to use optiboot as alternative bootloader, as the stock bootloader is affected by a bug preventing the use of RIOT's pm_reboot() implementation
2020-02-10 14:59:24 +01:00
## Using Optiboot
You can use the [Optiboot](https://github.com/Optiboot/optiboot) bootloader
instead of the stock bootloader for faster programming. Optiboot also is
smaller (512 byte instead of 2 KiB), so that 1.5 KiB more program memory is
available for RIOT. Refer to the project page for instructions on how to
build an flash the bootloader. Don't forgot to also update the fuse settings
to set the bootloader size to 256 words (512 bytes).
Compile and flash with `make BOARD=arduino-nano BOOTLOADER=optiboot flash` or
use `export ARDUINO_NANO_BOOTLOADER=optiboot` in order to not have to specify
the bootloader during compilation and flashing.
## Issues
### RIOT Stuck in Reboot Loop
If RIOT is stuck in a reboot loop e.g. after restarting the device with the
`reboot` shell command, this is likely caused by an
[issue with the stock bootloader](https://forum.arduino.cc/index.php?topic=150419.0)
that can be solved by using Optiboot as bootloader instead (see above).
## Caution
boards: Add support for the Arduino Nano The Arduino Nano board is the cheapest member of the Arduino family and used the same MCU as the Arduino Uno. It differs in the form factor (the Nano is much smaller), it uses an integrated FT232RL TTL adapter instead of an ATmega16u2 to provide access to the serial console via USB, and it uses a different bootloader (which occupies 2 KiB of the 32 KiB flash instead of 0.5 KiB occupied on the Arduino Uno). This commit mostly copy pastes code from the Arduino Uno.
2018-07-04 22:26:10 +02:00
Don't expect having a working network stack due to very limited resources.
*/
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