Programming Tips-Checking incoming parameters

Header File Definition section:

#define HAL_LED_1 0x01
#define HAL_LED_2 0x02
#define HAL_LED_3 0x04
#define HAL_LED_4 0x08
#define Hal_led_all (Hal_led_1 | Hal_led_2 | Hal_led_3 | Hal_led_4)

To pass in a parameter when the function is called:

Halledset (hal_led_1, hal_led_mode_on);

Check for parameters when the function is implemented:

Uint8 Halledset (uint8 LEDs, uint8 mode)

{

......

LEDs &= Hal_led_all; The purpose of checking the parameters can be achieved here

......

}

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Use this technique as much as possible in future programming, which plays an important role in the robustness of the program.

Programming Tips-Checking incoming parameters