| author | Tero Marttila <terom@paivola.fi> |
| Mon, 21 Apr 2014 00:20:27 +0300 | |
| changeset 82 | b5878197d017 |
| parent 39 | d7eac199d323 |
| permissions | -rw-r--r-- |
|
38
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Working font rendering on LED matrix
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|
1 |
;; vim: set ft=avr: |
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Working font rendering on LED matrix
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diff
changeset
|
2 |
|
| 31 | 3 |
.nolist |
4 |
.include "m168def.inc" ; Same family as 328P |
|
5 |
.list |
|
6 |
||
7 |
||
8 |
;; Interrupt Vector |
|
9 |
.org 0x00 |
|
10 |
rjmp init |
|
11 |
||
| 33 | 12 |
.org OC1Aaddr |
13 |
; Timer/Counter1 Compare Output A |
|
14 |
rjmp Timer_OC1A |
|
15 |
||
16 |
.org OC0Aaddr |
|
17 |
; Timer/Counter0 Compare Output A |
|
18 |
rjmp Timer_OC0A |
|
19 |
||
20 |
.org SPIaddr |
|
21 |
rjmp SPI_Interrupt |
|
22 |
||
|
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Matrix_Shift, Main_ScanText animation and Main_ScanCode
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23 |
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|
24 |
cseg0: .org 0x40 |
| 33 | 25 |
|
| 31 | 26 |
;; Syntax |
27 |
.include "macros.inc" |
|
28 |
||
29 |
;; SPI |
|
30 |
.include "spi.inc" |
|
31 |
||
| 33 | 32 |
;; Matrix |
33 |
.include "matrix.inc" |
|
34 |
||
35 |
;; Timer |
|
36 |
.set TIMER0_CB_A = Matrix_ScanCol |
|
37 |
||
38 |
.include "timer.inc" |
|
39 |
||
| 31 | 40 |
;; Utils |
41 |
.include "delay.inc" |
|
42 |
||
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38
f430b507a885
Working font rendering on LED matrix
Tero Marttila <terom@fixme.fi>
parents:
36
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changeset
|
43 |
;; Font rendering |
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f430b507a885
Working font rendering on LED matrix
Tero Marttila <terom@fixme.fi>
parents:
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|
44 |
.include "font.inc" |
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f430b507a885
Working font rendering on LED matrix
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parents:
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|
45 |
|
| 31 | 46 |
;; Scan through each pixel |
| 33 | 47 |
Main_ScanRaw: |
| 31 | 48 |
; init |
49 |
ldi r18, 1 |
|
50 |
ldi r19, 1 |
|
51 |
||
52 |
scan_loop: |
|
53 |
; write out to SPI |
|
54 |
sts spi_outbuf + 0, r18 ; rows |
|
55 |
sts spi_outbuf + 1, r19 ; columns |
|
56 |
||
57 |
rcall SPI_SendRecv |
|
58 |
||
59 |
; delay |
|
60 |
ldi r20, 5 ; ~4M cycles |
|
61 |
rcall VarDelay |
|
62 |
||
| 33 | 63 |
; cols |
64 |
lsl r19 ; next col |
|
65 |
brcc scan_loop ; refresh if we didn't overflow |
|
66 |
||
67 |
rol r19 ; shift back from C into r21.0 |
|
68 |
||
| 31 | 69 |
; rows |
| 33 | 70 |
lsl r18 ; next row |
| 31 | 71 |
brcc scan_loop ; refresh if we didn't overflow |
72 |
||
73 |
rol r18 ; shift back from C into r20.0 |
|
74 |
||
75 |
; one scan completed |
|
76 |
ret |
|
77 |
||
| 33 | 78 |
;; Scan with test pattern |
79 |
Main_ScanTest: |
|
80 |
; Generate pattern |
|
81 |
; end of buffer |
|
|
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82 |
ldi r17, MATRIX_BUF_COLS |
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83 |
ldi XL, low(matrix_colbuf + MATRIX_BUF_COLS) |
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84 |
ldi XH, high(matrix_colbuf + MATRIX_BUF_COLS) |
| 33 | 85 |
|
86 |
; bit pattern |
|
87 |
ldi r16, 0b11 |
|
88 |
||
89 |
st_loop: |
|
|
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|
90 |
; put, pre-decrement |
| 33 | 91 |
st -X, r16 |
92 |
||
93 |
; flip |
|
94 |
rol r16 |
|
95 |
||
96 |
; loop until zero |
|
97 |
dec r17 |
|
98 |
brne st_loop |
|
99 |
||
|
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100 |
st_animate: |
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101 |
; Animate |
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102 |
; shift right |
|
36
06e1e554acbb
Rename Matrix_ShiftRight to ShiftLeft, improve matrix.inc documentation
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parents:
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103 |
rcall Matrix_ShiftLeft |
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|
104 |
|
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parents:
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|
105 |
; wait for X/16th of a second |
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35
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parents:
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106 |
ldi XH, high(8 * 1024) |
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f1ac13235304
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parents:
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changeset
|
107 |
ldi XL, low(8 * 1024) |
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parents:
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|
108 |
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parents:
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109 |
rcall Timer_Sleep |
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parents:
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|
110 |
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parents:
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111 |
; loop |
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parents:
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112 |
rjmp st_animate |
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|
113 |
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114 |
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115 |
;; Display device code memory |
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116 |
Main_ScanCode: |
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|
117 |
; Code start |
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118 |
ldi ZL, low(cseg0 * 2) ; word addr |
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119 |
ldi ZH, high(cseg0 * 2) ; word addr |
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parents:
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|
120 |
|
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35
f1ac13235304
Pause refresh during load cycles
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parents:
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121 |
; Pause refresh |
|
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
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changeset
|
122 |
cli |
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f1ac13235304
Pause refresh during load cycles
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parents:
34
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changeset
|
123 |
|
|
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124 |
; Load initial frame |
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125 |
; to first frame, starting from right edge |
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parents:
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126 |
ldi r17, 8 |
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parents:
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changeset
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127 |
ldi XL, low(matrix_colbuf + 16) |
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parents:
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changeset
|
128 |
ldi XH, high(matrix_colbuf + 16) |
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parents:
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|
129 |
|
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parents:
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130 |
sc_load_initial: |
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4646abd073fb
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parents:
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|
131 |
; one byte |
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parents:
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132 |
lpm r16, Z+ |
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parents:
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changeset
|
133 |
st -X, r16 |
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parents:
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|
134 |
|
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parents:
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135 |
; loop until zero |
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parents:
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changeset
|
136 |
dec r17 |
|
4646abd073fb
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parents:
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changeset
|
137 |
brne sc_load_initial |
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4646abd073fb
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parents:
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changeset
|
138 |
|
|
36
06e1e554acbb
Rename Matrix_ShiftRight to ShiftLeft, improve matrix.inc documentation
Tero Marttila <terom@fixme.fi>
parents:
35
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changeset
|
139 |
; the first ShiftLeft below will jump to the end of the framebuffer |
|
06e1e554acbb
Rename Matrix_ShiftRight to ShiftLeft, improve matrix.inc documentation
Tero Marttila <terom@fixme.fi>
parents:
35
diff
changeset
|
140 |
|
|
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changeset
|
141 |
sc_next: |
|
4646abd073fb
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parents:
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changeset
|
142 |
; Show this frame |
|
36
06e1e554acbb
Rename Matrix_ShiftRight to ShiftLeft, improve matrix.inc documentation
Tero Marttila <terom@fixme.fi>
parents:
35
diff
changeset
|
143 |
rcall Matrix_ShiftLeft |
|
34
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parents:
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|
144 |
|
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parents:
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changeset
|
145 |
; Load next frame |
|
4646abd073fb
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parents:
33
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changeset
|
146 |
ldi r17, 8 |
|
4646abd073fb
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parents:
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changeset
|
147 |
ldi XL, low(matrix_colbuf + 8) |
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4646abd073fb
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parents:
33
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changeset
|
148 |
ldi XH, high(matrix_colbuf + 8) |
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4646abd073fb
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parents:
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|
149 |
|
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parents:
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150 |
sc_load_next: |
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parents:
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changeset
|
151 |
; one byte |
|
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Tero Marttila <terom@fixme.fi>
parents:
33
diff
changeset
|
152 |
lpm r16, Z+ |
|
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parents:
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changeset
|
153 |
st -X, r16 |
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|
154 |
|
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parents:
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changeset
|
155 |
; loop until zero |
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4646abd073fb
Matrix_Shift, Main_ScanText animation and Main_ScanCode
Tero Marttila <terom@fixme.fi>
parents:
33
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changeset
|
156 |
dec r17 |
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parents:
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changeset
|
157 |
brne sc_load_next |
|
4646abd073fb
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parents:
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|
158 |
|
|
35
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
34
diff
changeset
|
159 |
; Enable refresh |
|
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
34
diff
changeset
|
160 |
sei |
|
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
34
diff
changeset
|
161 |
|
|
34
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parents:
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changeset
|
162 |
; Animate from this -> next frame |
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parents:
33
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changeset
|
163 |
ldi r17, 8 ; 8 columns |
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parents:
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changeset
|
164 |
|
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parents:
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changeset
|
165 |
sc_anim: |
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parents:
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changeset
|
166 |
; wait for X/16th of a second |
|
4646abd073fb
Matrix_Shift, Main_ScanText animation and Main_ScanCode
Tero Marttila <terom@fixme.fi>
parents:
33
diff
changeset
|
167 |
ldi XH, high(2 * 1024) |
|
4646abd073fb
Matrix_Shift, Main_ScanText animation and Main_ScanCode
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parents:
33
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changeset
|
168 |
ldi XL, low(2 * 1024) |
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parents:
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changeset
|
169 |
|
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parents:
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changeset
|
170 |
rcall Timer_Sleep |
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parents:
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changeset
|
171 |
|
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parents:
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changeset
|
172 |
; shift |
|
36
06e1e554acbb
Rename Matrix_ShiftRight to ShiftLeft, improve matrix.inc documentation
Tero Marttila <terom@fixme.fi>
parents:
35
diff
changeset
|
173 |
rcall Matrix_ShiftLeft |
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parents:
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changeset
|
174 |
|
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parents:
33
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changeset
|
175 |
; loop until zero |
|
4646abd073fb
Matrix_Shift, Main_ScanText animation and Main_ScanCode
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parents:
33
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changeset
|
176 |
dec r17 |
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parents:
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changeset
|
177 |
brne sc_anim |
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parents:
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|
178 |
|
|
35
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
34
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changeset
|
179 |
; Pause refresh |
|
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
34
diff
changeset
|
180 |
cli |
|
f1ac13235304
Pause refresh during load cycles
Tero Marttila <terom@fixme.fi>
parents:
34
diff
changeset
|
181 |
|
|
34
4646abd073fb
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parents:
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changeset
|
182 |
; Move next -> this |
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Matrix_Shift, Main_ScanText animation and Main_ScanCode
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parents:
33
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changeset
|
183 |
ldi r17, 8 |
|
4646abd073fb
Matrix_Shift, Main_ScanText animation and Main_ScanCode
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parents:
33
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changeset
|
184 |
ldi XL, low(matrix_colbuf + 16) |
|
4646abd073fb
Matrix_Shift, Main_ScanText animation and Main_ScanCode
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parents:
33
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changeset
|
185 |
ldi XH, high(matrix_colbuf + 16) |
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186 |
ldi YL, low(matrix_colbuf + 8) |
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187 |
ldi YH, high(matrix_colbuf + 8) |
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|
188 |
|
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Matrix_Shift, Main_ScanText animation and Main_ScanCode
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|
189 |
sc_move_this: |
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|
190 |
; one byte |
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|
191 |
ld r16, -Y |
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parents:
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|
192 |
st -X, r16 |
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|
193 |
|
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194 |
; loop until zero |
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|
195 |
dec r17 |
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|
196 |
brne sc_move_this |
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|
197 |
|
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parents:
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|
198 |
sbi PIND, PIND7 |
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parents:
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|
199 |
|
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parents:
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|
200 |
; Load next frame, and animate |
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|
201 |
rjmp sc_next |
| 33 | 202 |
|
|
38
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Working font rendering on LED matrix
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203 |
Main_ScanText: |
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|
204 |
|
|
39
d7eac199d323
Implement Text_Load/ShowString
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|
205 |
; Constants |
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Implement Text_Load/ShowString
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206 |
stxt_message: ; text to render |
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Implement Text_Load/ShowString
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|
207 |
.db 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x21, 0x0 ; 'hello world!' |
|
38
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|
208 |
|
|
39
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Implement Text_Load/ShowString
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|
209 |
; Load into buffer |
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Implement Text_Load/ShowString
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|
210 |
ldi ZL, low(stxt_message * 2) |
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Implement Text_Load/ShowString
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|
211 |
ldi ZH, high(stxt_message * 2) |
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Working font rendering on LED matrix
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parents:
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|
212 |
|
|
39
d7eac199d323
Implement Text_Load/ShowString
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|
213 |
rcall Text_LoadString |
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parents:
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|
214 |
|
|
39
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Implement Text_Load/ShowString
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parents:
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changeset
|
215 |
sbi PORTD, PIND7 |
|
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parents:
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|
216 |
|
|
39
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Implement Text_Load/ShowString
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|
217 |
; Display |
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Implement Text_Load/ShowString
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|
218 |
rcall Text_ShowString |
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Implement Text_Load/ShowString
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|
219 |
|
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Implement Text_Load/ShowString
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|
220 |
; Done |
|
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Implement Text_Load/ShowString
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|
221 |
ret |
|
38
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|
222 |
|
| 31 | 223 |
Main: |
224 |
init: |
|
225 |
; Stack |
|
226 |
ldi r16, high(RAMEND) |
|
227 |
ldi r17, low(RAMEND) |
|
228 |
out SPH, r16 |
|
229 |
out SPL, r17 |
|
230 |
||
231 |
; Enable interrupts |
|
232 |
sei |
|
233 |
||
| 33 | 234 |
; DEBUG |
235 |
sbi DDRD, PORTD7 |
|
236 |
cbi PORTD, PORTD7 |
|
237 |
||
238 |
; Timer |
|
239 |
rcall Timer_Init |
|
240 |
||
| 31 | 241 |
; SPI |
242 |
rcall SPI_Init |
|
| 33 | 243 |
|
244 |
; Matrix |
|
245 |
rcall Matrix_Init |
|
| 31 | 246 |
|
247 |
; Run |
|
| 33 | 248 |
; rcall Main_ScanRaw |
|
34
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parents:
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changeset
|
249 |
; rcall Main_ScanTest |
|
38
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parents:
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changeset
|
250 |
; rcall Main_ScanCode |
|
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Working font rendering on LED matrix
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parents:
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diff
changeset
|
251 |
rcall Main_ScanText |
| 31 | 252 |
|
253 |
end: |
|
254 |
rjmp end |
|
255 |