Using ASF and Atmel Start in IAR

ASF and IAR

The library for products Atmel ASF has two versions: built into Atmel Studio and the so-called stand-alone. Stand-alone version can be used, for example, in IAR. Since IAR itself is somewhat ascetic from the point of view of various autocomplete chips, the use of ASF as an external library is not as interactive and convenient as in Atmel Studio, but nevertheless, you can customize and use everything once Atmel Start - WEB configurator code for ease and speed development.

Configuring IAR + ASF

First you need to download the stand-alone version of ASF and unpack.
Then create a new project in IAR with the necessary options. Suppose we have a motherboard of our own production with a SAMD20G16 microcontroller.
In the options of the project choose:
General -Options-Target-Device - Atmel ATSAMD20G16
General -Options-Library Configuration-Use CMSIS
C / C ++ Compiler -Preprocessor: here you need to specify the paths to the ASF files that will be used in the project.

If you are going to use Atmel Start, then the preprocessor settings are automatically generated when the project is loaded.
Assembler-Preprocessor
Output Converter - Output-Generate, Output Format: Intel Extended, Output File: Override default: file name.hex
Linker -Config-Linker configuration file: Override default: $ PROJ_DIR $ \ samd20g16_flash.icf
Debugger- Setup-Driver: J-Link / J-Trace
All settings are made.
To write the initialization functions of the controller and peripherals, use Atmel Start.
Alternatively, you can see examples for both IAR and Atmel Studio, or documentation.

Use AtmelStart

Atmel Start is an online code generator.
Select a board and controller and create a project: Custom Board, ATSAMD20G16 - Create new project
Let's start with the clocking settings. Suppose that our controller is clocked from an external oscillator with a frequency of 7.37 MHz and we want to have a system frequency of 48 MHz (see how to do this in Atmel Studio here ).
Open the Go to clock configurator :
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Everything is very clear, click on the modules, enter the necessary settings, and it should turn out like this:


You also need to configure the I / O ports of the microcontroller, for this there is a Pin / Mux Configurator . In this section, everything is intuitive.
Of course, you need to add the necessary peripherals - Add Software Component. For the convenience of searching, we leave only the search by driver. We find the right one, for example, SPI, select the quantity and add it. This can also be done on the main page by clicking on the "+" near the Drivers.


Now go to its settings.
We specify all the parameters we need. It turns out like this:


We do all the rest of the peripherals and everything we need. When everything is ready, we export the project to the format we need.
For this: Export Project: - Include IAR (.ipcf) file - Download Pack


We change the extension of the archive to a simple zip and unpack it into the project folder. In IAR: Tools -Options-Project-Enable Project Connections.
Next Project -Add Project Connection - IAR Project Connection-Ok, select the file: iar-project-connection.ipcf. Then all the settings and the files themselves in the folders appear in the project.


You can compile and enjoy!