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#ifndef MORSE_ENCODER_H_
#define MORSE_ENCODER_H_
#include <stdint.h>
/* Low level morse symbols */
enum morse_marks {
MORSE_DIT = 0, /* . */
MORSE_DAH = 1, /* - */
};
/* A morse symbol.
* bit 0-8: The transmitted marks (dit, dah)
* bit 12-15: The symbol length. In number of marks.
*/
typedef uint16_t morse_sym_t;
/* Construct a morse symbol */
#define __MORSE_SYM(marks, size) ((morse_sym_t)((marks) | (size) << 12))
#define MORSE_SYM_1(m0) __MORSE_SYM(((m0) << 0), 1)
#define MORSE_SYM_2(m0, m1) __MORSE_SYM(((m0) << 0) | ((m1) << 1), 2)
#define MORSE_SYM_3(m0, m1, m2) __MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2), 3)
#define MORSE_SYM_4(m0, m1, m2, m3) __MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2) | ((m3) << 3), 4)
#define MORSE_SYM_5(m0, m1, m2, m3, m4) __MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2) | ((m3) << 3) | \
((m4) << 4), 5)
#define MORSE_SYM_6(m0, m1, m2, m3, m4, m5) \
__MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2) | ((m3) << 3) | \
((m4) << 4) | ((m5) << 5), 6)
#define MORSE_SYM_7(m0, m1, m2, m3, m4, m5, m6) \
__MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2) | ((m3) << 3) | \
((m4) << 4) | ((m5) << 5) | ((m6) << 6), 7)
#define MORSE_SYM_8(m0, m1, m2, m3, m4, m5, m6, m7) \
__MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2) | ((m3) << 3) | \
((m4) << 4) | ((m5) << 5) | ((m6) << 6) | ((m7) << 7), 8)
#define MORSE_SYM_9(m0, m1, m2, m3, m4, m5, m6, m7, m8) \
__MORSE_SYM(((m0) << 0) | ((m1) << 1) | ((m2) << 2) | ((m3) << 3) | \
((m4) << 4) | ((m5) << 5) | ((m6) << 6) | ((m7) << 7) | \
((m8) << 8), 9)
/* Get the size (in number of marks) of a morse symbol */
#define MORSE_SYM_SIZE(symbol) (((uint16_t)(symbol) & 0xF000) >> 12)
/* Returns the marks */
#define MORSE_SYM_MARKS(symbol) ((symbol) & 0x1FF)
/* Returns true, if the symbol is a space between words */
#define MORSE_SYM_IS_SPACE(symbol) ((symbol) == 0)
#endif /* MORSE_ENCODER_H_ */
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