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Altera_Forum's avatar
Altera_Forum
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21 years ago

remove HAL device drivers (preprocessor options)

Hello, Is there a list anywhere of the available preprocessor options? I need it because I want to remove some HAL drivers but need some others... For example, I want to access directly th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

One way to disable the UART driver is to add a file named 'altera_avalon_uart.h' to your system library project. This file should contain the following: 

#define ALTERA_AVALON_UART_INSTANCE(name, device)   # define ALTERA_AVALON_UART_INIT(name, device)

This will stop the HAL installing it's driver, and allow you to provide your own instead. If you want to initialise your driver before main(), you can use these macros - as described in the Nios II Software Developers' Handbook.