INCLUDE EFR32MG12.inc		; CPU register definitions
	INCLUDE terminal.inc	
	EXPORT	main	

;-------------------------------------	; DATA segment in RAM
	AREA	RAM, DATA, NOINIT, READWRITE, ALIGN=3
buf	SPACE	80			; input string buffer	
	
;-------------------------------------	; CODE segment in flash (ROM)
	AREA    |.text|, CODE, READONLY
main	PROC				; main user code
	bl	Terminal_setup		; setup TeraTerm communication

loop
	; read string demo
	ldr	R0, =prompt1		; pass prompt address
	bl	WriteString		; print "Enter string: "
	ldr	R0, =buf		; pass buffer address
	movs	R1, #79			; max accepted string length
	bl	ReadString		; read string, R2 = string length
	
	ldr	R0, =prompt3		; pass prompt address
	bl 	WriteString		; print "You entered: "
	ldr	R0, =buf
	bl 	WriteString		; control output of input string
	bl	NewLine			; start new line
	
;-----------------------------------------------------------
	; read char demo
	ldr	R0, =prompt2		; pass prompt address
	bl	WriteString		; print "Enter character: "
	bl	ReadChar		; get char from the user
	push	{R0}			; save input character
	bl	NewLine	
	ldr	R0, =prompt3		; pass prompt address
	bl 	WriteString		; print "You entered: "
	pop	{R0}			; R0 = save character	
	bl	WriteChar		; print input char
	bl	NewLine			; start new line
	bl	NewLine			; start new line
	
	b	loop			; loop back		
	ENDP

prompt1	DCB	"Enter string: ", 0
prompt2 DCB	"Enter character: ", 0
prompt3	DCB	"You entered: ", 0
	ALIGN
	END