Solved Task 3.1

2022-10-28 09:22:16 +02:00
parent 22c387214b
commit 6f4740e719
45 changed files with 11542 additions and 4 deletions
@@ -32,7 +32,11 @@ ADDR_LCD_RED            EQU     0x60000340
 ADDR_LCD_GREEN          EQU     0x60000342
 ADDR_LCD_BLUE           EQU     0x60000344
 LCD_BACKLIGHT_FULL      EQU     0xffff
-LCD_BACKLIGHT_OFF      EQU     0x0000
+LCD_BACKLIGHT_OFF		EQU     0x0000
+	
+MASK_LOW_NIBBLE			EQU		0xf
+FACTOR_10				EQU		0xa
+BITMASK_KEY_T0          EQU     0x01

 ; ------------------------------------------------------------------
 ; -- myCode
@@ -46,8 +50,82 @@ main    PROC
            
 ; STUDENTS: To be programmed

+		LDR		R2, =MASK_LOW_NIBBLE

+		; Load BCD Tens in R0
+		LDR		R0, =ADDR_DIP_SWITCH_15_8
+		LDRB	R0, [R0]
+		ANDS	R0, R0, R2

+		; Load BCD Ones in R1
+		LDR		R1, =ADDR_DIP_SWITCH_7_0
+		LDRB	R1, [R1]
+		ANDS	R1, R1, R2
+		
+		; Check if T0 is pressed. If pressed goto CalcByMult
+		LDR     R3, =ADDR_BUTTONS           ; load base address of keys
+        LDR     R4, =BITMASK_KEY_T0         ; load key mask T0
+		LDRB    R2, [R3]                    ; load key values
+		TST     R2, R4	                    ; check, if key T0 is pressed
+        BEQ     CalcByMult					; goto CalcByMult
+		
+		
+CalcByBitShift
+		; set the LCD background to red
+		LDR     R2, =ADDR_LCD_RED
+		LDR     R3, =0xffff
+		STRH	R3, [R2]
+		LDR     R2, =ADDR_LCD_BLUE
+		LDR     R3, =0x0
+		STRH	R3, [R2]
+		
+		; Calculate Bin Value to R2 by Bit Shifting
+		; R2 = R0 * 10
+		LSLS	R2, R0, #3
+		LSLS	R3, R0, #1
+		ADDS	R2, R2, R3
+		ADDS	R2, R2, R1
+		
+EndCalcByBitShift
+		
+		; goto EndCalcByMult
+		B		EndCalcByMult
+		
+CalcByMult
+
+		; set the LCD background to blue
+		LDR      R2, =ADDR_LCD_RED
+		LDR      R3, =0x0
+		STRH	 R3, [R2]
+		LDR      R2, =ADDR_LCD_BLUE
+		LDR      R3, =0xffff
+		STRH	 R3, [R2]
+		
+		; Calculate Bin Value to R2 by Multiplication
+		; R2 = R0 * 10
+		LDR		R2, =FACTOR_10
+		MULS	R2, R0, R2
+		ADDS	R2, R2, R1
+
+EndCalcByMult
+
+		; Shift BCD Tens in high Nibble in R0
+		; Add BCD Ones in low Nibble in R0
+		LSLS	R0, R0, #4
+		ORRS	R0, R0, R1
+		
+		; Add Bin Value in higher Byte in R0
+		LSLS	R2, R2, #8
+		ORRS	R0, R0, R2
+
+		
+		; Show R0 on LEDs
+		LDR		R2, =ADDR_LED_15_0
+		STRH	R0, [R2]
+		
+		; Show R0 on 7-Segment
+		LDR		R2, =ADDR_7_SEG_BIN_DS3_0
+		STRH	R0, [R2]

 ; END: To be programmed