X-Git-Url: https://www.hackdaworld.org/gitweb/?a=blobdiff_plain;f=led_plex%2Fmain.asm;h=8d9145ba17c3708625568ce4cde6db690a7e4dee;hb=32e3f51bc0f4248019379fe784d38c7fb770f952;hp=23b33c37deec5bcf948d3b2eb1bc084bd8926050;hpb=204affb08caa9c97cdd1cc010f5a8fbaa0571992;p=my-code%2Fatmel.git

diff --git a/led_plex/main.asm b/led_plex/main.asm
index 23b33c3..8d9145b 100644
--- a/led_plex/main.asm
+++ b/led_plex/main.asm
@@ -9,11 +9,15 @@
 .include "../include/tn2313def.inc"
 
 ; defines
+.def	zero		= r1
+.def	one		= r2
 .def	tmp1		= r16
 .def	tmp2		= r17
 .def	uart_rxtx	= r18
 .def	hc595_sink	= r19
 .def	hc595_source	= r20
+.def	column		= r21
+.def	count		= r22
 
 ;
 ; interrupts
@@ -86,8 +90,17 @@ INIT:
 	; gio port init
 	rcall PORT_INIT
 
-	; timer init
-	;rcall TIMER_INIT
+	; timer0 init
+	rcall TIMER0_INIT
+
+	; timer0 interrupt enable
+	rcall TIMER0_INT_INIT
+
+	; timer1 init
+	rcall TIMER1_INIT
+
+	; timer1 interrupt enable
+	rcall TIMER1_INT_INIT
 
 	; uart init
 	rcall UART_INIT
@@ -95,23 +108,51 @@ INIT:
 	; uart interrupt enable
 	rcall UART_INT_RX_INIT
 
+	; zero and one initialization
+	ldi tmp1,0
+	mov zero,tmp1
+	ldi tmp1,1
+	mov one,tmp1
+
 	; set stackpointer
 	ldi tmp1,low(RAMEND)
 	out SPL,tmp1
 
-	; global interrupt enable
-	;sei 
+	; framebuffer init: Z :)
+	ldi ZL,low(FB_C)
+	ldi ZH,high(FB_C)
+	ldi tmp1,0xff
+	st Z+,tmp1
+	ldi tmp1,0xc3
+	st Z+,tmp1
+	ldi tmp1,0xa5
+	st Z+,tmp1
+	ldi tmp1,0x99
+	st Z+,tmp1
+	ldi tmp1,0x99
+	st Z+,tmp1
+	ldi tmp1,0xa5
+	st Z+,tmp1
+	ldi tmp1,0xc3
+	st Z+,tmp1
+	ldi tmp1,0xff
+	st Z,tmp1
+
+	; led init
+	ldi hc595_sink,0x00
+	ldi hc595_source,0x01
+	ldi column,0
+	rcall SET_HC595
+
+	; more init
+	ldi count,0x21
 
 	; signal ready output
 	ldi uart_rxtx,0x68
 	rcall UART_TX
 
-	; testing ... DO NOT CONNECT LEDS BY NOW !!!
-	ldi hc595_sink,0xff
-	ldi hc595_source,0xff
-	rcall SET_HC595
-	ldi uart_rxtx,0x61
-	rcall UART_TX
+	; global interrupt enable
+	sei 
 
 MAIN:
 
@@ -130,11 +171,169 @@ MAIN:
 ;
 
 T1_OVF:
+
+	;
+	; write font into framebuffer sram
+	;
+
+.ifdef DEBUG_PORTS
+	ldi uart_rxtx,0x21
+	rcall UART_TX
+.endif
+	; calculate address
+
+	; font base address
+	ldi ZL,low(FONTS*2)
+	ldi ZH,high(FONTS*2)
+.ifdef DEBUG_PORTS
+	mov uart_rxtx,ZH
+	rcall UART_TX
+	mov uart_rxtx,ZL
+	rcall UART_TX
+	ldi uart_rxtx,0x2d
+	rcall UART_TX
+.endif
+
+	; framebuffer base address
+	ldi YL,low(FB_C)
+	ldi YH,high(FB_C)
+.ifdef DEBUG_PORTS
+	mov uart_rxtx,YH
+	rcall UART_TX
+	mov uart_rxtx,YL
+	rcall UART_TX
+	ldi uart_rxtx,0x2d
+	rcall UART_TX
+.endif
+
+	; font offset
+	mov XL,count
+	ldi XH,0
+	; times 8 == 3 left shifts 
+	rol XL
+	rol XH
+	rol XL
+	rol XH
+	rol XL
+	rol XH
+.ifdef DEBUG_PORTS
+	mov uart_rxtx,XH
+	rcall UART_TX
+	mov uart_rxtx,XL
+	rcall UART_TX
+	ldi uart_rxtx,0x2d
+	rcall UART_TX
+.endif
+
+	; final font address
+	add ZL,XL
+	adc ZH,zero
+	add ZH,XH
+.ifdef DEBUG_PORTS
+	mov uart_rxtx,ZH
+	rcall UART_TX
+	mov uart_rxtx,ZL
+	rcall UART_TX
+	ldi uart_rxtx,0x2d
+	rcall UART_TX
+	mov uart_rxtx,count
+	rcall UART_TX
+.endif
+
+	; move font data into framebuffer
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z+
+	st Y+,tmp1
+	lpm tmp1,Z
+	st Y,tmp1
+
+	; TESTING
+	; increment test counter
+	inc count
+	cpi count,0x80
+	brne EXIT_T1_OVF
+	ldi count,0x21
+
+EXIT_T1_OVF:
+	
 	reti
 
 T0_OVF:
+
+	; debug output
+	cbi PORTD,3
+
+	; shift source
+	rol hc595_source
+	inc column
+	cpi column,8
+	brne SINK_UPDATE
+	ldi column,0
+	ldi hc595_source,1
+
+	; update sink
+SINK_UPDATE:
+
+	ldi ZL,low(FB_C)
+	ldi ZH,high(FB_C)
+	add ZL,column
+	adc ZH,zero
+	ld hc595_sink,Z
+
+.ifdef DEBUG_PORTS
+	ldi uart_rxtx,0x2d
+	rcall UART_TX
+	ldi uart_rxtx,0x3e
+	rcall UART_TX
+	ldi uart_rxtx,0x30
+	add uart_rxtx,column
+	rcall UART_TX
+	ldi uart_rxtx,0x3a
+	rcall UART_TX
+	ldi uart_rxtx,0x20
+	rcall UART_TX
+.endif
+
+	; set hc595
+	rcall SET_HC595
+
+.ifdef DEBUG_PORTS
+	ldi uart_rxtx,0x0a
+	rcall UART_TX
+	ldi uart_rxtx,0x0d
+	rcall UART_TX
+.endif
+
+	; debug output
+	sbi PORTD,3
+	
 	reti
 
 UART_RECEIVE:
 	reti
 
+; include fonts 
+FONTS:
+.include "fonts.asm"
+
+;
+; sram
+;
+
+.dseg
+
+; current framebuffer content
+FB_C: .byte 8
+
+