Mercurial > public > mk2
annotate code_part1/OSTC_code_asm_part1/dump_screen.asm @ 754:780f182ae2b8
changelog
author | heinrichsweikamp |
---|---|
date | Mon, 21 Oct 2013 15:39:44 +0200 |
parents | a8a36c85e031 |
children |
rev | line source |
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330 | 1 ;============================================================================= |
2 ; | |
3 ; File dump_screen.asm | |
4 ; | |
5 ; Dump screen contains to the serial interface. | |
6 ; | |
7 ; This program is free software: you can redistribute it and/or modify | |
8 ; it under the terms of the GNU General Public License as published by | |
9 ; the Free Software Foundation, either version 3 of the License, or | |
10 ; (at your option) any later version. | |
11 ; | |
12 ; This program is distributed in the hope that it will be useful, | |
13 ; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 ; GNU General Public License for more details. | |
16 ; | |
17 ; You should have received a copy of the GNU General Public License | |
18 ; along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 ; | |
20 ; Copyright (c) 2011, JD Gascuel. | |
21 ;============================================================================= | |
22 ; HISTORY | |
23 ; 2011-05-08 : [jDG] Creation. | |
24 ; | |
25 ; BUGS : | |
26 ; * ... | |
27 ;============================================================================= | |
332
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28 CBLOCK 0x000 |
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29 ds_line ; Current line (0..239). |
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30 ds_column ; Current columnx2 (0..159) |
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31 ds_pixel:2 ; Current pixel color. |
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32 ds_count ; Repetition count. |
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33 ENDC |
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34 ;============================================================================= |
330 | 35 |
36 ; Manage interface to the OSTC platform: | |
37 dump_screen: | |
38 bcf uart_dump_screen ; clear flag! | |
39 | |
40 movlw 'l' | |
41 movwf TXREG ; Send command echo. | |
42 bsf no_sensor_int ; No Sensor Interrupt | |
43 bcf PIE1,RCIE ; no interrupt for UART | |
44 bcf PIR1,RCIF ; clear flag | |
45 bsf LED_blue ; LEDusb ON | |
46 call rs232_wait_tx ; wait for UART | |
47 | |
687
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48 movff win_flags,WREG ; BEWARE: bank0 bit-test |
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49 btfss WREG,1 ; Display1? |
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50 call dump_screen_0 ; No, dump screen |
330 | 51 |
52 bcf no_sensor_int ; Restore Sensor Interrupt | |
53 bcf LED_blue ; Clear led | |
54 bcf LED_red ; Clear led | |
55 bsf PIE1,RCIE ; Interrupt for RS232 | |
56 return | |
57 | |
58 ;============================================================================= | |
59 ; Dump screen contains to the UART | |
60 | |
61 dump_screen_0: | |
62 | |
681 | 63 ;---- Send DISPLAY box command for the full screen window ------------------- |
331 | 64 mullw 0 ; PRODH:L <- 0 |
330 | 65 |
66 AA_CMD_WRITE 0x35 ; VerticalStartAddress HIGH:LOW | |
67 AA_DATA_WRITE_PROD ; 00:00 | |
68 | |
69 AA_CMD_WRITE 0x36 ; VerticalEndAddress HIGH:LOW | |
70 AA_DATA_WRITE 0x01 | |
71 AA_DATA_WRITE 0x3F | |
72 | |
73 AA_CMD_WRITE 0x37 ; HorizontalAddress START:END | |
74 AA_DATA_WRITE 0x00 | |
75 AA_DATA_WRITE 0xEF | |
76 | |
477 | 77 btfss win_flip_screen ; OSTC 2N have a flipped screen, |
78 bra dump_screen_mk2 ; So we should start 239 instead. | |
79 movlw LOW(.239) | |
80 movwf PRODL | |
81 movlw HIGH(.239) | |
82 movwf PRODH | |
83 dump_screen_mk2: | |
84 | |
330 | 85 AA_CMD_WRITE 0x20 ; Start Address Horizontal (.0 - .239) |
86 AA_DATA_WRITE_PROD ; 00:00 | |
87 | |
477 | 88 mullw 0 ; Make sure PROD is 0 again. |
330 | 89 AA_CMD_WRITE 0x21 ; Start Address Vertical (.0 - .319) |
90 AA_DATA_WRITE_PROD ; 00:00 | |
91 | |
92 AA_CMD_WRITE 0x22 ; Start reading. | |
681 | 93 rcall DISP_DataRead ; Dummy pixel to skip. |
94 rcall DISP_DataRead ; Dummy pixel to skip. | |
330 | 95 |
96 movlw .160 ; 160x2 columns | |
332
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97 movwf ds_column |
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98 rcall dump_screen_pixel_reset |
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99 |
330 | 100 dump_screen_1: |
101 btg LED_red ; LEDactivity toggle | |
102 | |
331 | 103 AA_CMD_WRITE 0x22 ; Re-sync data. |
104 | |
105 setf TRISD ; PortD as input. | |
330 | 106 |
332
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107 ; Dump even column |
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108 movlw .240 ; 240 lines, once. |
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109 movwf ds_line |
330 | 110 dump_screen_2: |
681 | 111 rcall DISP_DataRead ; read pixel-high byte |
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112 movwf PRODH |
681 | 113 rcall DISP_DataRead ; read pixel-low byte |
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114 movwf PRODL |
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115 rcall dump_screen_pixel |
331 | 116 |
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117 decfsz ds_line,F |
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118 bra dump_screen_2 |
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119 rcall dump_screen_pixel_flush |
331 | 120 |
332
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121 ; Dump odd column |
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122 movlw .240 ; 240 lines, twice. |
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123 movwf ds_line |
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124 dump_screen_3: |
681 | 125 rcall DISP_DataRead ; read pixel-high byte |
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126 movwf PRODH |
681 | 127 rcall DISP_DataRead ; read pixel-low byte |
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128 movwf PRODL |
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129 rcall dump_screen_pixel |
331 | 130 |
332
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131 decfsz ds_line,F |
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132 bra dump_screen_3 |
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133 rcall dump_screen_pixel_flush |
330 | 134 |
135 clrf TRISD ; Back to normal (PortD as output) | |
136 | |
332
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137 decfsz ds_column,F |
331 | 138 bra dump_screen_1 |
330 | 139 |
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140 AA_CMD_WRITE 0x00 ; NOP, to stop Address Update Counter |
330 | 141 return |
142 | |
332
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143 ;============================================================================= |
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144 ; Pixel compression |
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145 ; |
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146 ; Input: PRODH:L = pixel. |
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147 ; Output: Compressed stream on output. |
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148 ; Compressed format: |
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149 ; 0ccccccc : BLACK pixel, repeated ccccccc+1 times (1..128). |
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150 ; 11cccccc : WHITE pixel, repeated cccccc+1 times (1..64). |
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151 ; 10cccccc HIGH LOW : color pixel (H:L) repeated ccccc+1 times (1..64). |
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152 ; |
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153 dump_screen_pixel: |
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154 movf PRODH,W ; Compare pixel-high |
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155 xorwf ds_pixel+1,W |
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156 bnz dump_screen_pixel_1 ; Different -> dump. |
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157 |
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158 movf PRODL,W ; Compare pixel-low |
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159 xorwf ds_pixel+0,W |
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160 bnz dump_screen_pixel_1 ; Different -> dump. |
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161 |
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162 incf ds_count,F ; Same color: just increment. |
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163 return |
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164 |
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165 dump_screen_pixel_1: ; Send (pixel,count) tuple |
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166 movf ds_count,W ; Is count zero ? |
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167 bz dump_screen_pixel_2 ; Yes: skip sending. |
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168 |
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169 movf ds_pixel+1,W ; This is a BLACK pixel ? |
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170 iorwf ds_pixel+0,W |
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171 bz dump_screen_pix_black ; YES. |
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172 |
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173 movf ds_pixel+1,W ; This is a white pixel ? |
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174 andwf ds_pixel+0,W |
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175 incf WREG |
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176 bz dump_screen_pix_white ; YES. |
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177 |
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178 ; No: write the pixel itself... |
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179 movlw .64 ; Max color pixel on a single byte. |
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180 cpfsgt ds_count ; Skip if count > 64 |
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181 movf ds_count,W ; W <- min(64,count) |
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182 subwf ds_count,F ; ds_count <- ds_count-W |
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183 decf WREG ; Save as 0..63 |
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184 iorlw b'10000000' ; MARK as a color pixel. |
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185 |
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186 movwf TXREG |
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187 call rs232_wait_tx ; wait for UART |
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188 movff ds_pixel+1,TXREG |
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189 call rs232_wait_tx ; wait for UART |
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190 movff ds_pixel+0,TXREG |
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191 call rs232_wait_tx ; wait for UART |
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192 bra dump_screen_pixel_1 |
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193 |
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194 dump_screen_pixel_2: |
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195 movff PRODH,ds_pixel+1 ; Save new pixel color |
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196 movff PRODL,ds_pixel+0 |
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197 movlw 1 |
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198 movwf ds_count ; And set count=1. |
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199 return |
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200 |
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201 dump_screen_pix_black: |
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202 movlw .128 ; Max black pixel on a single byte. |
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203 cpfsgt ds_count ; Skip if count > 128 |
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204 movf ds_count,W ; W <- min(128,count) |
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205 subwf ds_count,F ; ds_count <- ds_count-W |
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206 decf WREG ; Save as 0..127 |
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207 dump_screen_pix_3: |
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208 movwf TXREG |
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209 call rs232_wait_tx |
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210 bra dump_screen_pixel_1 ; More to dump ? |
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211 |
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212 dump_screen_pix_white: |
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213 movlw .64 ; Max white pixel on a single byte. |
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214 cpfsgt ds_count ; Skip if count > 64 |
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215 movf ds_count,W ; W <- min(64,count) |
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216 subwf ds_count,F ; ds_count <- ds_count-W |
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217 decf WREG ; Save as 0..63 |
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218 iorlw b'11000000' ; MARK as a compressed white. |
9ee86a19f1fa
Beter compression for black/white pixels: ~1sec screen dumps.
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219 bra dump_screen_pix_3 |
9ee86a19f1fa
Beter compression for black/white pixels: ~1sec screen dumps.
JeanDo
parents:
332
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220 |
332
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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221 dump_screen_pixel_flush: |
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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222 clrf PRODH |
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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223 clrf PRODL |
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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224 rcall dump_screen_pixel_1 ; Send it |
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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225 dump_screen_pixel_reset: |
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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226 clrf ds_count ; But clear count. |
1828234369fc
Added dump_screen compression. From ~15 to ~2/3 secondes.
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227 return |