Common Macros

Convenience macros used across the project. More...

Collaboration diagram for Common Macros:

Macros
#define	BCD_TO_DEC(BCD)
	Converts a BCD-encoded byte to its decimal equivalent.
#define	DEC_TO_BCD(DEC)
	Converts a decimal value to its BCD-encoded byte equivalent.
#define	DELAY(ms)
	Blocking delay using the system tick counter.

Detailed Description

Convenience macros used across the project.

Macro Definition Documentation

BCD_TO_DEC

#define BCD_TO_DEC

(

BCD

)

Value:

(((BCD) >> 4) * 10 + ((BCD) & 0x0F))

Converts a BCD-encoded byte to its decimal equivalent.

Parameters

BCD	A byte where the upper nibble holds the tens digit and the lower nibble holds the units digit.

Definition at line 47 of file common.h.

DEC_TO_BCD

#define DEC_TO_BCD

(

DEC

)

Value:

(((DEC / 10) << 4) | (DEC % 10))

Converts a decimal value to its BCD-encoded byte equivalent.

Parameters

DEC	A decimal integer value (0–99).

Definition at line 54 of file common.h.

DELAY

#define DELAY

(

ms

)

Value:

    do {                                        \
        uint32_t delay_start_time = systick_get_ms(); \
        while ((systick_get_ms() - delay_start_time) < (ms)) { \
        }                                       \
    } while (0)

Blocking delay using the system tick counter.

Spins until ms milliseconds have elapsed since the macro was entered. Requires systick_get_ms() to be available in scope.

Parameters

ms	Number of milliseconds to wait.

Definition at line 65 of file common.h.

#define DELAY(ms)                               \
    do {                                        \
        uint32_t delay_start_time = systick_get_ms(); \
        while ((systick_get_ms() - delay_start_time) < (ms)) { \
        }                                       \
    } while (0)