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/* | |
Title: LED | |
About: Purpose | |
Small set of functions for simple and portable LED usage. | |
About: Usage | |
1 - Configure one or more LEDs using <LED_Configure> and | |
<LED_ConfigureAll>. | |
2 - Set, clear and toggle LEDs using <LED_Set>, <LED_Clear> and | |
<LED_Toggle>. | |
3 - Get the current status of a LED using <LED_Get>. | |
LEDs are numbered starting from 0; the number of LEDs depend on the | |
board being used. All the functions defined here will compile properly | |
regardless of whether the LED is defined or not; they will simply | |
return 0 when a LED which does not exist is given as an argument. | |
Also, these functions take into account how each LED is connected on to | |
board; thus, <LED_Set> might change the level on the corresponding pin | |
to 0 or 1, but it will always light the LED on; same thing for the other | |
methods. | |
*/ | |
#ifndef LED_H | |
#define LED_H | |
//------------------------------------------------------------------------------ | |
// Exported functions | |
//------------------------------------------------------------------------------ | |
extern unsigned char LED_Configure(unsigned int led); | |
extern unsigned char LED_Set(unsigned int led); | |
extern unsigned char LED_Clear(unsigned int led); | |
extern unsigned char LED_Toggle(unsigned int led); | |
#endif //#ifndef LED_H | |