1 platform-hooks {#hooks} 2 ============== 3 4 Hooks can be defined per supported platform to allow for highly custom 5 operations if needed. This feature of MRAA should only be used by developers 6 defining the board definitions, NOT an end user. 7 8 ##Types of Hooks 9 10 ###REPLACE 11 Defining a replace function will entirely replace the associate function. This 12 should only be done if your new function can handle everything the mraa 13 function would normally. 14 15 ###PRE 16 Any functionality defined here will be performed when the main function is 17 called. 18 19 ###POST 20 Any functionality perfomed here is done just before the normal function 21 returns. All post functions will have passed into them the return value that 22 would normally be returned. 23 24 ##Hooks 25 ### GPIO 26 * init (pre-post) 27 * mode (replace-pre-post) 28 * dir (replace-pre-post) 29 * write (pre-post) 30 * use-mmaped (replace-pre-post) 31 32 ### I2C 33 * init (pre-post) - On RAW 34
