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; ******************************************************************************
;
;                        MSP430 CODE EXAMPLE DISCLAIMER
;
;  MSP430 code examples are self-contained low-level programs that typically
;  demonstrate a single peripheral function or device feature in a highly
;  concise manner. For this the code may rely on the device's power-on default
;  register values and settings such as the clock configuration and care must
;  be taken when combining code from several examples to avoid potential side
;  effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware
;  for an API functional library-approach to peripheral configuration.
;
; --/COPYRIGHT--
;******************************************************************************
;   MSP430xG46x Demo - Timer_A, Toggle P5.1, TACCR0 Cont. Mode ISR, DCO SMCLK
;
;   Description: Toggle P5.1 using software and TA_0 ISR. Toggles every
;   50000 SMCLK cycles. SMCLK provides clock source for TACLK.
;   During the TA_0 ISR, P5.1 is toggled and 50000 clock cycles are added
;   to TACCR0. TA_0 ISR is triggered every 50000 cycles. CPU is normally off
;   and used only during TA_ISR.
;   ACLK = 32.768kHz, MCLK = SMCLK = TACLK = default DCO
;
;                 MSP430xG461x
;             -----------------
;         /|\|              XIN|-
;          | |                 |  32kHz
;          --|RST          XOUT|-
;            |                 |
;            |             P5.1|-->LED
;
;   S. Karthikeyan/ K.Venkat
;   Texas Instruments Inc.
;   Dec 2006
;   Built with IAR Embedded Workbench Version: 3.41A
;******************************************************************************
#include <msp430.h>
;-------------------------------------------------------------------------------
            RSEG    CSTACK                  ; Define stack segment
;-------------------------------------------------------------------------------
            RSEG    CODE                    ; Assemble to Flash memory
;-----------------------------------------------------------------------------
; ******************* 1. Инициализация таймера и LCD-дисплея ******************

RESET 		mov.w #SFE(CSTACK), SP 		; Initialize stackpointer
		mov.b #LCDON + LCD4MUX + LCDFREQ_128, &LCDACTL 	; 4mux LCD, ACLK/128
		mov.b #0x0F, &LCDAPCTL0 	; Segments 0-13
		mov.b #0x1C, &P5SEL 		; set COM pins for LCD
ClearLCD 	mov.w #20, R15 			; 15 LCD memory bytes to clear
Clear1 		mov.b #0, LCDM1(R15) 		; Write zeros in LCD RAM locations
						; to clear display
		dec R15 			; All LCD mem clear?
		jc Clear1 			; More LCD mem to clear go, use JC
StopWDT 	mov.w #WDTPW+WDTHOLD, &WDTCTL 	; Stop WDT
SetupFLL 	bis.b #XCAP14PF, &FLL_CTL0 	; Configure load caps
OFIFGcheck 	bic.b #OFIFG, &IFG1 		; Clear OFIFG
		mov.w #047FFh, R15 		; Wait for OFIFG to set again if
OFIFGwait 	dec.w R15 			; not stable yet
		jnz OFIFGwait
		bit.b #OFIFG, &IFG1 		; Has it set again?
		jnz OFIFGcheck 			; If so, wait some more
SetupP5 	bis.b #002h, &P5DIR 		; P5.1 output
SetupC0 	mov.w #CCIE, &TACCTL0 		; TACCR0 interrupt enabled

; CCIE and CCIFG (bits 4 and 0) are
;more interrupts associated
; with the CCR's.
		mov.w #50000, &TACCR0 		;
SetupTA 	mov.w #TASSEL_2+MC_2, &TACTL 	; SMCLK, continuous mode

; ****************** 2. Установка начальных значений **************************
Mainloop 	mov.w #01024d, R7 		; number
		mov.w #10d, R8 			; skip
                MOV #0, R9
                MOV #0, R10
                MOV #0, R11
                MOV #0, R12
                mov.w #6, R13                      ; NA SKOL'KO INCREMENTIr\RO
		bis.w #CPUOFF+GIE, SR 		; CPU off, interrupts enabled
		nop 				; Required for debugger

                ;bis.w #GIE, SR 		; interrupts enabled
                ;jmp $
                ;nop

; ****************** 3. Обработчик прерывания *********************************

TA0_ISR; DEC NUMBER
;------------------------------------------------------------------------------
		add.w #50000, &TACCR0 		; Add Offset to TACCR0
		dec.w R8
		jz run
		reti
run:
		dec.w R7 			; number
		mov.w R7, R4
		call #ITOA 			; int to string
                mov.w #10d, R8
reti

; * 4. Функция ITOA, переводящая число в строку и выводящая его на LCD-дисплей *
ITOA:

		MOV.W #00d, R6

                MOV.B LCD_Tab(R9), LCDM3(R6)
		INC R6
                MOV.B LCD_Tab(R10), LCDM3(R6)
		INC R6
                MOV.B LCD_Tab(R11), LCDM3(R6)
		INC R6
                MOV.B LCD_Tab(R12), LCDM3(R6)
		INC R6

                ; MOYA VSTAVKA
                CMP #10, R13
                JL UND
                SUB #16, R13
                INC R10

UND:            DADD R13, R9
                CMP #10, R9
                JL ext
                SUB #16, R9
                INC R10
                CMP #10, R10
                JL ext
                MOV #0, R10
                INC R11
                CMP #10, R11
                JL ext
                MOV #0, R11
                INC R12


ext:            RET


;       Digits code for 4-mux mode
a               EQU 080h        ; .
b               EQU 040h        ; left bottom
c               EQU 020h        ; middle
d               EQU 001h        ; top
e               EQU 002h        ; right top
f               EQU 008h        ; bottom
g               EQU 004h        ; right bottom
h               EQU 010h        ; left top

LCD_Tab     DB      b+d+e+f+g+h     ; +a           ; Displays '0'
            DB      e+g             ; +a           ; Displays '1'
            DB      d+e+c+b+f       ; +a           ; Displays '2'
            DB      d+e+c+g+f       ; +a           ; Displays '3'
            DB      h+c+e+g         ; +a           ; Displays '4'
            DB      d+h+c+g+f       ; +a           ; Displays '5'
            DB      d+h+c+b+f+g     ; +a           ; Displays '6'
            DB      d+e+g           ; +a           ; Displays '7'
            DB      b+c+d+e+f+g+h    ;+a           ; Displays '8'
            DB      c+d+e+f+g+h     ; +a           ; Displays '9'


;------------------------------------------------------------------------------
            COMMON  INTVEC                  ; Interrupt Vectors
;------------------------------------------------------------------------------
            ORG     RESET_VECTOR            ; MSP430 RESET Vector
            DW      RESET                   ;
            ORG     TIMERA0_VECTOR          ; Timer_A0 Vector
            DW      TA0_ISR                 ;
            END