nuclear@4: #ifndef SERIAL_H_
nuclear@4: #define SERIAL_H_
nuclear@4: 
nuclear@4: #include "hwregs.h"
nuclear@4: 
nuclear@4: /* dff030 is REG_SERDAT
nuclear@4:  * dff018 is REG_SERDATR
nuclear@4:  * bit 13 of SERDATR is TBE (transmit buffer empty)
nuclear@4:  */
nuclear@4: #define ser_putchar(c) \
nuclear@4: 	asm volatile( \
nuclear@4: 		"or.w #0x100, %0\n\t" \
nuclear@4: 		"0: btst #13, 0xdff018\n\t" \
nuclear@4: 		"beq 0b\n\t" \
nuclear@4: 		"move.w %0, 0xdff030\n\t" \
nuclear@4: 		:: "d"((int16_t)c))
nuclear@4: 
nuclear@4: void ser_init(int baud);
nuclear@4: void ser_print(const char *s);
nuclear@4: 
nuclear@4: #endif	/* SERIAL_H_ */