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1 ;=============================================================================
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2 ;
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3 ; File tft.asm
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4 ;
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5 ; Managing the TFT screen
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6 ;
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7 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved.
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8 ;=============================================================================
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9 ; HISTORY
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10 ; 2011-05-24 : [jDG] Cleanups from initial Matthias code.
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11
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12 #include "ostc3.inc"
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13 #include "wait.inc"
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14 #include "varargs.inc"
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15 #include "external_flash.inc"
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16 #include "tft_outputs.inc"
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17 #include "eeprom_rs232.inc"
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18
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19 ;=============================================================================
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20 ; TFT_frame needs to backup coordinates.
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21 CBLOCK tmp
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22 save_top
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23 save_height
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24 save_left
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25 save_width
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26 ds_line ; Current line (0..239).
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27 ds_column ; Current columnx2 (0..159)
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28 ds_pixel:2 ; Current pixel color.
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29 ds_count ; Repetition count.
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30 ENDC
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31
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32 ;=============================================================================
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33 ; Basic bit-level macros
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34
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35 RD_H macro
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36 bsf tft_rd,0
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37 endm
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38
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39 RD_L macro
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40 bcf tft_rd,0
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41 endm
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42
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43 RS_H macro
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44 bsf tft_rs,0
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45 endm
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46
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47 RS_L macro
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48 bcf tft_rs,0
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49 endm
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50
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51 NCS_H macro
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52 bsf tft_cs,0
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53 endm
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54
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55 NCS_L macro
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56 bcf tft_cs,0
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57 endm
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58
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59 WR_H macro
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60 bsf tft_nwr,0
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61 endm
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62
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63 WR_L macro
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64 bcf tft_nwr,0
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65 endm
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66
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67 ;=============================================================================
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68 ; Byte-leve macros
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69 ;
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70 Index_out macro low_b
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71 movlw low_b
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72 rcall TFT_CmdWrite
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73 endm
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74
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75 Parameter_out macro high_b, low_b
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76 movlw high_b
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77 movwf PORTA ; Upper
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78 movlw low_b
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79 rcall TFT_DataWrite
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80 endm
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81
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82
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83 basic CODE
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84
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85
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86 ;=============================================================================
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87 ; TFT_write_flash_image
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88 ;
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89 ; Inputs: FSR2 = EEPROM address / 256
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90 ; win_left, win_top : imagte CENTER position
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91 ; Outputs: win_height, win_width.
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92 ; image copyed on screen.
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93 ; Trashed: PROD, hi, lo
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94 ;
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95 global TFT_write_flash_image
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96 TFT_write_flash_image:
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97 ; Get back the full 24bit EEPROM address
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98 clrf ext_flash_address+0
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99 movff FSR2L,ext_flash_address+1
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100 movf FSR2H,W
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101 iorlw 0x30
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102 movwf ext_flash_address+2
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103
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104 ; Read header: width and height
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105 global TFT_write_flash_image_addr
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106 TFT_write_flash_image_addr:
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107 call ext_flash_read_block_start
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108 movff SSP2BUF,win_width+0
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109 movwf SSP2BUF ; Write to buffer to initiate new read
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110 btfss SSP2STAT, BF ; Next byte ready ?
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111 bra $-2 ; NO: wait...
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112 movff SSP2BUF,win_width+1
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113 movwf SSP2BUF ; Write to buffer to initiate new read
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114 btfss SSP2STAT, BF ; Next byte ready ?
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115 bra $-2 ; NO: wait...
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116 movff SSP2BUF,win_height
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117 movwf SSP2BUF ; Write to buffer to initiate new read
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118 btfss SSP2STAT, BF ; Next byte ready ?
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119 bra $-2 ; NO: wait...
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120 movff SSP2BUF,WREG ; drop 4th byte.
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121 movwf SSP2BUF ; Write to buffer to initiate new read
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122 btfss SSP2STAT, BF ; Next byte ready ?
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123 bra $-2 ; NO: wait...
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124
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125 ; Sanity check on header to avoid badly uploaded images.
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126 iorwf WREG ; Check height < 256
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127 bnz TFT_write_flash_image_failed
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128 movf win_width+1,W ; Check width < 512
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129 andlw 0xFE
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130 bnz TFT_write_flash_image_failed
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131
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132 ; Center image on win_top, win_left values
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133 bcf STATUS,C ; Clear carry
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134 rrcf win_height,W ; And get height/2
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135 subwf win_top,F ; top -= height/2
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136 rrcf win_width+1,W ; Get 9th bit into carry
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137 rrcf win_width+0,W ; Get width/2 (in 0..320 range)
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138 bcf STATUS,C
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139 rrcf WREG,W ; Get width/2 in 0..160 range
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140 subwf win_leftx2,F ; left -= width/2
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141
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142 rcall TFT_box_write ; Inputs : win_top, win_leftx2, win_height, win_width(in 1..320 range)
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143
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144 ; Compute number of pixels to move (result on 17 bits !)
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145 clrf TBLPTRU
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146 movf win_width+0,W
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147 mulwf win_height ; Result in PRODL:H
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148 movf win_width+1,W
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149 bz TFT_write_flash_image_1 ; width > 8bits ?
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150 movf win_height,W ; YES: add extra
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151 addwf PRODH,F
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152 rlcf TBLPTRU ; And carry into upper register.
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153 TFT_write_flash_image_1:
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154 incf PRODH,F ; Pre-condition nested loops
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155 incf TBLPTRU,F
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156
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157 ; Write pixels
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158 Index_out 0x22 ; Frame Memory Data Write start
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159 RS_H ; Data
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160
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161 TFT_write_flash_image_loop:
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162 btfss SSP2STAT, BF ; Buffer full?
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163 bra $-2 ; NO: wait...
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164 movff SSP2BUF,PORTH ; Read lo
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165 movwf SSP2BUF ; Write to buffer to initiate new read
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166
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167 btfss SSP2STAT, BF ; Buffer full?
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168 bra $-2 ; NO: wait...
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169 movff SSP2BUF,PORTA ; And read hi
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170 movwf SSP2BUF ; Write to buffer to initiate new read
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171 WR_L
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172 WR_H ; Write 1 Pixel
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173
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174 decfsz PRODL,F
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175 bra TFT_write_flash_image_loop
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176 decfsz PRODH,F
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177 bra TFT_write_flash_image_loop
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178 decfsz TBLPTRU,F
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179 bra TFT_write_flash_image_loop
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180
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181 btfss SSP2STAT, BF ; Buffer full?
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182 bra $-2 ; No, wait
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183 movf SSP2BUF,W ; Read dummy byte
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184
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185 bsf flash_ncs ; CS=1
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186 movlw 0x00 ; NOP, to stop window mode
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187 bra TFT_CmdWrite ; This routine "returns"
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188
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189 ;---- Draw a 4x4 red square in place of missing images...
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190 TFT_write_flash_image_failed:
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191 movlw -1
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192 addwf win_leftx2,F
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193 movlw -2
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194 addwf win_top,F
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195 movlw 2
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196 movwf win_width+0
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197 clrf win_width+1
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198 movlw 4
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199 movwf win_height
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200 movlw color_red
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201 rcall TFT_set_color
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202 goto TFT_box
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203
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204 ;=============================================================================
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205 ;
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206
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207 global TFT_CmdWrite
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208 TFT_CmdWrite:
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209 RS_L ; Command
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210 clrf PORTA ; Upper
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211 movwf PORTH ; Lower
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212 WR_L
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213 WR_H ; Tick
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214 return;
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215
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216 global TFT_DataWrite
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217 TFT_DataWrite:
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218 RS_H ; Data
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219 movwf PORTH ; Lower
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220 WR_L
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221 WR_H ; Tick
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222 return
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223
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224 ;=============================================================================
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225 ;
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226 global TFT_ClearScreen
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227 TFT_ClearScreen:
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228 Index_out 0x50 ; Window Horizontal Start Address
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229 Parameter_out 0x00, 0x00 ; 0-239
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230 Index_out 0x51 ; Window Horizontal End Address
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231 Parameter_out 0x00, 0xEF ; 0-239
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232 Index_out 0x52 ; Window Vertical Start Address
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233 Parameter_out 0x00, 0x00 ; 0-319
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234 Index_out 0x53 ; Window Vertical End Address
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235 Parameter_out 0x01, 0x3F ; 0-319
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236 Index_out 0x20 ; Frame Memory Horizontal Address
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237 Parameter_out 0x00, 0x00 ; 0-239
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238 Index_out 0x21 ; Frame Memory Vertical Address
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239 Parameter_out 0x01, 0x3F ; 0-319
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240
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241 Index_out 0x22 ; Frame Memory Data Write start
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242
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243 RD_H ; Not Read
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244 RS_H ; Data
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245 NCS_L ; Not CS
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246 clrf PORTA ; Data Upper
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247 clrf PORTH ; Data Lower
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248
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249 movlw d'10'
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250 movwf tft_temp3
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251 TFT_ClearScreen2:
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252 movlw d'30'
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253 movwf tft_temp2
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254 TFT_ClearScreen3:
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255 clrf tft_temp1 ; 30*10*256=76800 Pixels -> Clear complete 240*320
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256 TFT_ClearScreen4:
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257 WR_L
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258 WR_H ; Tick
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259 decfsz tft_temp1,F
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260 bra TFT_ClearScreen4
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261 decfsz tft_temp2,F
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262 bra TFT_ClearScreen3
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263 decfsz tft_temp3,F
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264 bra TFT_ClearScreen2
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265 return
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266
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267 ;=============================================================================
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268 ;
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269 global TFT_DisplayOff
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270 TFT_DisplayOff:
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271 clrf CCPR1L ; PWM OFF
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272 clrf PORTA
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273 clrf PORTH
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274 RD_L ; LOW
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275 nop
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276 RS_L ; LOW
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277 bcf tft_nwr
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278 nop
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279 bcf tft_cs
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280 nop
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281 bcf tft_nreset
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282 WAITMS d'1'
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283 bsf tft_power ; inverted...
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284 bcf lightsen_power ; power-down light sensor
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285 return
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286
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287 ; -----------------------------
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288 ; TFT boot
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289 ; -----------------------------
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290 global TFT_boot
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291 TFT_boot:
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292 clrf PORTA
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293 clrf PORTH
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294 RD_L ; LOW
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295 bcf tft_nwr
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296 nop
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297 bcf tft_cs
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298 nop
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299 bcf tft_nreset
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300 WAITMS d'1'
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301 bcf tft_power ; inverted...
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302 WAITMS d'1'
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303
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304 RD_H ; Keep high
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305 WR_H ;
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306 NCS_L ; Not CS
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307
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308 WAITMS d'2'
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309 bsf tft_nreset
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310 WAITMS d'150'
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311 bsf lightsen_power ; Supply power to light sensor
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312
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313 ; Data Transfer Synchronization
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314 Parameter_out 0x00, 0x00
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315 Parameter_out 0x00, 0x00
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316
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317 ; Init through config table...
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318 movlw LOW display0_config_table
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319 movwf TBLPTRL
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320 movlw HIGH display0_config_table
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321 movwf TBLPTRH
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322 movlw UPPER display0_config_table
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323 movwf TBLPTRU
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324 rcall display0_init_loop
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325
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326 Index_out 0x22
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327 ; WAITMS d'81' ; 46
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328 call TFT_ClearScreen
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329 Index_out 0x07
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330 Parameter_out 0x01, 0x00
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331 return
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332
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333
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334 display0_config_table:
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335 ; Reg, Dat0, Dat1 or 0xFF,0x00,0x00 for end
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336 db 0xA4,0x00,0x01,0xFF,.002,0x00
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337 db 0x09,0x00,0x01,0x92,0x04,0x00
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338 db 0x93,0x04,0x02,0x94,0x00,0x02
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339 db 0x07,0x00,0x00,0x10,0x04,0x30
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340 db 0x11,0x02,0x37,0x12,0x11,0x8D
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341 db 0x13,0x11,0x00,0x01,0x01,0x00
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342 db 0x02,0x02,0x00,0x03,0x50,0x20
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343 db 0x0A,0x00,0x08,0x0D,0x00,0x00
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344 db 0x0E,0x00,0x30,0xFF,.151,0x00
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345 db 0x12,0x11,0xBD,0x20,0x00,0x00
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346 db 0x21,0x00,0x00,0x30,0x06,0x02
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347 db 0x31,0x56,0x0D,0x32,0x05,0x07
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348 db 0x33,0x06,0x09,0x34,0x00,0x00
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349 db 0x35,0x09,0x06,0x36,0x57,0x05
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350 db 0x37,0x0D,0x06,0x38,0x02,0x06
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351 db 0x39,0x00,0x00,0xFF,0x00,0x00
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352
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353 display0_init_loop:
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354 TBLRD*+
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355 movlw 0xFF
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356 cpfseq TABLAT
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357 bra display0_config_write ; Write Config pair to Display
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358 ; Delay ms or quit (return)
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359 TBLRD*+
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360 tstfsz TABLAT ; End of config?
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361 bra $+4 ; No
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362 return ; Done.
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363 movf TABLAT,W
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364 call WAITMSX ; Wait WREG milliseconds
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365 TBLRD*+ ; Dummy read (Third byte of delay command)
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366 bra display0_init_loop ; Loop
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367
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368 display0_config_write: ; With command in WREG
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369 movf TABLAT,W
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370 rcall TFT_CmdWrite ; Write command
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371 TBLRD*+ ; Get config0
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372 movff TABLAT,PORTA
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373 TBLRD*+ ; Get config1
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374 movf TABLAT,W
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375 rcall TFT_DataWrite ; Write config
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376 bra display0_init_loop ; Loop
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377
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378
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379 ;=============================================================================
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380 ; Smooth lighting-up of the display:
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381 ;
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382 ; Trashes: WREG, PRODL
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383 ; Typical usage:
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384 ; clrf CCPR1L ; Backlight off
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385 ; [draw splash screen]
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386 ; call TFT_DisplayFadeIn
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387 ;
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388 global TFT_Display_FadeIn
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389 TFT_Display_FadeIn:
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390 movlw CCP1CON_VALUE ; See ostc3.inc
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391 movwf CCP1CON
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392 bsf tft_is_dimming ; TFT is dimming, ignore ambient sensor!
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393 clrf CCPR1L ; Backlight off - to be sure
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394 movff max_CCPR1L,PRODL
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395 TFT_Display_FadeIn_0:
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396 incf CCPR1L,F ; Duty cycle
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397 WAITMS d'2'
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398 decfsz PRODL,F
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399 bra TFT_Display_FadeIn_0
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400 bcf tft_is_dimming ; dimming done.
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401 return
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402
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403 ;=============================================================================
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404 ; Smooth lighting-off of the display:
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405 ; Trashes: WREG, PRODL
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406 global TFT_Display_FadeOut
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407 TFT_Display_FadeOut:
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408 movff max_CCPR1L,PRODL
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409 bsf tft_is_dimming ; TFT is dimming, ignore ambient sensor!
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410 TFT_Display_FadeOut_0:
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411 movff PRODL,CCPR1L ; Duty cycle
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412 WAITMS d'1'
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413 decfsz PRODL,F
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414 bra TFT_Display_FadeOut_0
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415 clrf CCPR1L
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416 return
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417
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418 ;=============================================================================
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419
|
|
|
420 start_common:
|
|
|
421 VARARGS_BEGIN
|
|
|
422 VARARGS_GET8 win_leftx2
|
|
|
423 VARARGS_GET8 win_top
|
|
|
424 VARARGS_END
|
|
|
425 return
|
|
|
426
|
|
|
427 ;=============================================================================
|
|
|
428
|
|
|
429 global box_std_block, box_black_block, box_color_block
|
|
|
430
|
|
|
431 box_std_block: ; Use white color
|
|
|
432 setf WREG
|
|
|
433 bra box_common
|
|
|
434 box_black_block: ; Use black color
|
|
|
435 clrf WREG
|
|
|
436 box_common:
|
|
|
437 box_color_block:
|
|
|
438 rcall TFT_set_color
|
|
|
439 VARARGS_BEGIN
|
|
|
440 VARARGS_GET8 win_top
|
|
|
441 VARARGS_GET8 win_height
|
|
|
442 VARARGS_GET8 win_leftx2
|
|
|
443 VARARGS_GET8 win_width
|
|
|
444 VARARGS_END
|
|
|
445 bra TFT_box
|
|
|
446
|
|
|
447 ;-----------------------------------------------------------------------------
|
|
|
448
|
|
|
449 global box_frame_std, box_frame_common, box_frame_color, box_frame_color16
|
|
|
450
|
|
|
451 box_frame_std:
|
|
|
452 setf WREG
|
|
|
453 rcall TFT_set_color
|
|
|
454
|
|
|
455 box_frame_common:
|
|
|
456 VARARGS_BEGIN
|
|
|
457 VARARGS_GET8 win_top
|
|
|
458 VARARGS_GET8 win_height
|
|
|
459 VARARGS_GET8 win_leftx2
|
|
|
460 VARARGS_GET8 win_width
|
|
|
461 VARARGS_END
|
|
|
462 bra TFT_frame
|
|
|
463
|
|
|
464 box_frame_color:
|
|
|
465 rcall TFT_set_color
|
|
|
466 box_frame_color16:
|
|
|
467 bra box_frame_common
|
|
|
468
|
|
|
469 ;=============================================================================
|
|
|
470 ; Init for half_pixel_write
|
|
|
471 ; Set column register on TFT device, and current color.
|
|
|
472 ; Inputs: win_leftx2
|
|
|
473 ; Outputs: win_color:2
|
|
|
474 ; Trashed: WREG, PROD
|
|
|
475 global init_pixel_write
|
|
|
476 init_pixel_write:
|
|
|
477 movff win_leftx2,WREG
|
|
|
478 mullw 2
|
|
|
479 rcall pixel_write_col320 ; Start Address Vertical (.0 - .319)
|
|
|
480 setf WREG
|
|
|
481 bra TFT_set_color
|
|
|
482
|
|
|
483 ;-----------------------------------------------------------------------------
|
|
|
484 ; Writes two half-pixels at position (win_top,win_leftx2)
|
|
|
485 ; Inputs: win_leftx2, win_top, win_color:2
|
|
|
486 ; Trashed: WREG, PROD
|
|
|
487 global pixel_write
|
|
|
488 pixel_write:
|
|
|
489 movff win_leftx2,WREG
|
|
|
490 mullw 2 ; win_leftx2 x 2 -> PRODH:PRODL
|
|
|
491 rcall pixel_write_col320 ; Start Address Vertical (.0 - .319)
|
|
|
492 rcall half_pixel_write ; Write this half-one.
|
|
|
493
|
|
|
494 movff win_leftx2,WREG ; Address of next one
|
|
|
495 mullw 2
|
|
|
496 infsnz PRODL ; +1
|
|
|
497 incf PRODH
|
|
|
498 rcall pixel_write_col320
|
|
|
499 bra half_pixel_write ; Note: Cmd 0x20 is mandatory, because
|
|
|
500 ; of the autoincrement going vertical
|
|
|
501
|
|
|
502 global pixel_write_col320
|
|
|
503 pixel_write_col320:
|
|
|
504 Index_out 0x21 ; Frame Memory Vertical Address
|
|
|
505 bra TFT_DataWrite_PROD
|
|
|
506
|
|
|
507 ;-----------------------------------------------------------------------------
|
|
|
508 ; Writes one half-pixel at position (win_top,win_leftx2).
|
|
|
509 ; Inputs: win_leftx2, win_top, win_color:2
|
|
|
510 ; Trashed: WREG, PROD
|
|
|
511 global half_pixel_write
|
|
|
512 half_pixel_write:
|
|
|
513 movff win_top,WREG ; d'0' ... d'239'
|
|
|
514 ; Variant with Y position in WREG.
|
|
|
515 half_pixel_write_1:
|
|
|
516 sublw .239 ; 239-Y --> Y
|
|
|
517
|
|
|
518 mullw 1 ; Copy row to PRODH:L
|
|
|
519 Index_out 0x20 ; Frame Memory Horizontal Address
|
|
|
520 rcall TFT_DataWrite_PROD
|
|
|
521
|
|
|
522 Index_out 0x22 ; Frame Memory Data Write start
|
|
|
523 RS_H ; Data
|
|
|
524 movff win_color1,PORTA ; Upper
|
|
|
525 movff win_color2,PORTH ; Lower
|
|
|
526 WR_L
|
|
|
527 WR_H ; Tick
|
|
|
528 return
|
|
|
529
|
|
|
530 ;-----------------------------------------------------------------------------
|
|
|
531 ; Writes a vertical line of half-pixel at position (win_top,win_leftx2,win_height).
|
|
|
532 ; Inputs: win_leftx2, win_top, win_height, win_color:2
|
|
|
533 ; Trashed: WREG, PROD, TABLAT, TBLPTRL
|
|
|
534 global half_vertical_line
|
|
|
535 half_vertical_line:
|
|
|
536 clrf TABLAT ; Loop index.
|
|
|
537
|
|
|
538 half_vertical_line_loop:
|
|
|
539 movff win_leftx2,WREG ; Init X position.
|
|
|
540 mullw 2
|
|
|
541 movf TABLAT,W ; Get loop index
|
|
|
542 andlw 1 ; Just low bit
|
|
|
543 xorwf PRODL,F ; And use it to jitter current X position
|
|
|
544 rcall pixel_write_col320 ; Start Address Vertical (.0 - .319)
|
|
|
545
|
|
|
546 movff win_height,WREG ; Index reached height (Bank0 read) ?
|
|
|
547 xorwf TABLAT,W
|
|
|
548 btfsc STATUS,Z ; Equals ?
|
|
|
549 return ; Yes: done.
|
|
|
550 movff win_top,WREG ; Y = top + index (Bank0 read)
|
|
|
551 addwf TABLAT,W
|
|
|
552 rcall half_pixel_write_1
|
|
|
553 incf TABLAT,F ; index++
|
|
|
554 bra half_vertical_line_loop
|
|
|
555
|
|
|
556 ;-----------------------------------------------------------------------------
|
|
|
557 ; Writes a horizontal line of half-pixel at position (win_top,win_leftx2,win_width).
|
|
|
558 ; Inputs: win_leftx2, win_top, win_width, win_color:2
|
|
|
559 ; Trashed: WREG, PROD, TABLAT, TBLPTRL
|
|
|
560 global half_horizontal_line
|
|
|
561 half_horizontal_line:
|
|
|
562 clrf TABLAT ; Loop index.
|
|
|
563
|
|
|
564 half_horizontal_line_loop:
|
|
|
565 movff win_leftx2,WREG ; Init X position.
|
|
|
566 mullw 2
|
|
|
567 rcall pixel_write_col320 ; Start Address Vertical (.0 - .319)
|
|
|
568 movff win_width,WREG ; Index reached height (Bank0 read) ?
|
|
|
569 xorwf TABLAT,W
|
|
|
570 btfsc STATUS,Z ; Equals ?
|
|
|
571 return ; Yes: done.
|
|
|
572 movff win_top,WREG ; Y = top + index (Bank0 read)
|
|
|
573 addwf TABLAT,W
|
|
|
574 rcall half_pixel_write_1
|
|
|
575 incf TABLAT,F ; index++
|
|
|
576 bra half_horizontal_line_loop
|
|
|
577
|
|
|
578
|
|
|
579 ;-----------------------------------------------------------------------------
|
|
|
580 ; TFT Data Cmd via W
|
|
|
581 ;
|
|
|
582 global TFT_DataWrite_PROD
|
|
|
583 TFT_DataWrite_PROD:
|
|
|
584 ; RD_H ; Keep high
|
|
|
585 RS_H ; Data
|
|
|
586 movff PRODH,PORTA ; Move high byte to PORTA
|
|
|
587 movff PRODL,PORTH ; Move low byte to PORTH
|
|
|
588 WR_L
|
|
|
589 WR_H ; Tick
|
|
|
590 return
|
|
|
591
|
|
|
592 TFT_DataRead_PROD:
|
|
|
593 Index_out 0x22 ; Frame Memory Data Read start
|
|
|
594 setf TRISA ; PortA as input.
|
|
|
595 setf TRISH ; PortH as input.
|
|
|
596 RS_H ; Data
|
|
|
597 WR_H ; Not write
|
|
|
598 RD_L ; Read!
|
|
|
599 nop
|
|
|
600 nop
|
|
|
601 nop
|
|
|
602 RD_H ; Tick
|
|
|
603 nop
|
|
|
604 RD_L ; Read!
|
|
|
605 nop
|
|
|
606 nop
|
|
|
607 nop
|
|
|
608 movff PORTA,PRODH
|
|
|
609 movff PORTH,PRODL
|
|
|
610 RD_H ; Tick
|
|
|
611 nop
|
|
|
612 clrf TRISA ; PortA as output
|
|
|
613 clrf TRISH ; PortH as output
|
|
|
614 return
|
|
|
615
|
|
|
616
|
|
|
617
|
|
|
618 ;=============================================================================
|
|
|
619 ; Output TFT Window Address commands.
|
|
|
620 ; Inputs : win_top, win_leftx2, win_height, win_width.
|
|
|
621 ; Output : PortA/PortH commands.
|
|
|
622 ; Trashed: PROD
|
|
|
623 ;
|
|
|
624 global TFT_box_write
|
|
|
625 TFT_box_write:
|
|
|
626 movff win_leftx2,WREG ; Compute left = 2*leftx2 --> PROD
|
|
|
627 mullw 2
|
|
|
628
|
|
|
629 ;---- Normal horizontal window ---------------------------------------
|
|
|
630 ; Output 0x35 left,
|
|
|
631 ; 0x36 right == left + width - 1.
|
|
|
632
|
|
|
633 Index_out 0x52 ; Window Vertical Start Address
|
|
|
634 rcall TFT_DataWrite_PROD ; Output left
|
|
|
635 Index_out 0x21 ; Frame Memory Vertical Address
|
|
|
636 rcall TFT_DataWrite_PROD ; Output left
|
|
|
637
|
|
|
638 movff win_width+0,WREG ; right = left + width - 1
|
|
|
639 addwf PRODL,F
|
|
|
640 movff win_width+1,WREG
|
|
|
641 addwfc PRODH,F
|
|
|
642 decf PRODL,F ; decrement result
|
|
|
643 btfss STATUS,C
|
|
|
644 decf PRODH,F
|
|
|
645
|
|
|
646 Index_out 0x53 ; Window Vertical End Address
|
|
|
647 rcall TFT_DataWrite_PROD
|
|
|
648
|
|
|
649 ;---- Flipped vertical window ----------------------------------------
|
|
|
650 ; Output 0x37 flipped(bottom) = 239-bottom = 240 - top - height
|
|
|
651 ; flipped(top) = 239-top
|
|
|
652 TFT_box_flip_V:
|
|
|
653 movff win_top,PRODL
|
|
|
654 movff win_height,WREG
|
|
|
655 addwf PRODL,W
|
|
|
656 sublw .240 ; 240 - top - height
|
|
|
657 movwf PRODH ; First byte
|
|
|
658
|
|
|
659 movf PRODL,W
|
|
|
660 sublw .239 ; 249-top
|
|
|
661 movwf PRODL ; --> second byte.
|
|
|
662
|
|
|
663 Index_out 0x50 ; Window Horizontal Start Address
|
|
|
664 clrf PORTA ; Upper
|
|
|
665 movf PRODH,W
|
|
|
666 rcall TFT_DataWrite ; Lower (and tick)
|
|
|
667
|
|
|
668 Index_out 0x51 ; Window Horizontal End Address
|
|
|
669 clrf PORTA ; Upper
|
|
|
670 movf PRODL,W
|
|
|
671 rcall TFT_DataWrite ; Lower (and tick)
|
|
|
672
|
|
|
673 Index_out 0x20 ; Frame Memory Horizontal Address
|
|
|
674 clrf PORTA ; Upper
|
|
|
675 movf PRODL,W
|
|
|
676 rcall TFT_DataWrite ; Lower (and tick)
|
|
|
677 return
|
|
|
678
|
|
|
679
|
|
|
680 ;=============================================================================
|
|
|
681 ; TFT_frame : draw a frame around current box with current color.
|
|
|
682 ; Inputs: win_top, win_leftx2, win_height, win_width, win_color1, win_color2
|
|
|
683 ; Outputs: (none)
|
|
|
684 ; Trashed: WREG, PROD, aa_start:2, aa_end:2
|
|
|
685 global TFT_frame
|
|
|
686 TFT_frame:
|
|
|
687 movff win_top,save_top ; Backup everything.
|
|
|
688 movff win_height,save_height
|
|
|
689 movff win_leftx2,save_left
|
|
|
690 movff win_width,save_width
|
|
|
691
|
|
|
692 ;---- TOP line -----------------------------------------------------------
|
|
|
693 movlw 1 ; row ~ height=1
|
|
|
694 movff WREG,win_height
|
|
|
695 rcall TFT_box
|
|
|
696
|
|
|
697 ;---- BOTTOM line --------------------------------------------------------
|
|
|
698 movff save_top,PRODL ; Get back top,
|
|
|
699 movff save_height,WREG ; and height
|
|
|
700 addwf PRODL,W ; top+height
|
|
|
701 decf WREG ; top+height-1
|
|
|
702 movff WREG,win_top ; top+height-1 --> top
|
|
|
703 rcall TFT_box
|
|
|
704
|
|
|
705 ;---- LEFT column --------------------------------------------------------
|
|
|
706 movff save_top,win_top ; Restore top/height.
|
|
|
707 movff save_height,win_height
|
|
|
708 movlw 1 ; column ~ width=1
|
|
|
709 movff WREG,win_width
|
|
|
710 rcall TFT_box
|
|
|
711
|
|
|
712 ;---- RIGHT column -------------------------------------------------------
|
|
|
713 movff save_left,WREG
|
|
|
714 movff save_width,PRODL
|
|
|
715 addwf PRODL,W
|
|
|
716 decf WREG
|
|
|
717 movff WREG,win_leftx2
|
|
|
718 rcall TFT_box
|
|
|
719
|
|
|
720 ;---- Restore everything -------------------------------------------------
|
|
|
721 movff save_left,win_leftx2
|
|
|
722 movff save_width,win_width
|
|
|
723 return
|
|
|
724
|
|
|
725 ;=============================================================================
|
|
|
726 ; TFT_box : fills current box with current color.
|
|
|
727 ; Inputs: win_top, win_leftx2, win_height, win_width, win_color1, win_color2
|
|
|
728 ; Outputs: (none)
|
|
|
729 ; Trashed: WREG, PROD
|
|
|
730 global TFT_box
|
|
|
731
|
|
|
732 TFT_box:
|
|
|
733 ;---- Define Window ------------------------------------------------------
|
|
|
734 movf win_width,W
|
|
|
735 bcf STATUS,C
|
|
|
736 rlcf WREG
|
|
|
737 movwf win_width+0
|
|
|
738 movlw 0
|
|
|
739 rlcf WREG
|
|
|
740 movwf win_width+1
|
|
|
741 rcall TFT_box_write
|
|
|
742
|
|
|
743 rrcf win_width+1,W ; width /= 2
|
|
|
744 rrcf win_width+0,W
|
|
|
745 movwf win_width
|
|
|
746
|
|
|
747 ;---- Fill Window --------------------------------------------------------
|
|
|
748 Index_out 0x22 ; Frame Memory Data Write start
|
|
|
749
|
|
|
750 clrf PRODH ; Column counter.
|
|
|
751 RS_H ; Data
|
|
|
752
|
|
|
753 TFT_box2: ; Loop height times
|
|
|
754 movff win_height,PRODL
|
|
|
755
|
|
|
756 TFT_box3: ; loop width times
|
|
|
757 movff win_color1,PORTA ; Upper
|
|
|
758 movff win_color2,PORTH ; Lower
|
|
|
759 WR_L
|
|
|
760 WR_H ; Tick
|
|
|
761
|
|
|
762 movff win_color1,PORTA ; Upper
|
|
|
763 movff win_color2,PORTH ; Lower
|
|
|
764 WR_L
|
|
|
765 WR_H ; Tick
|
|
|
766
|
|
|
767 decfsz PRODL,F ; row loop finished ?
|
|
|
768 bra TFT_box3 ; No: continue.
|
|
|
769
|
|
|
770 incf PRODH,F ; column count ++
|
|
|
771
|
|
|
772 movff win_bargraph,WREG ; current column == bargraph ?
|
|
|
773 cpfseq PRODH
|
|
|
774 bra TFT_box4 ; No: just loop.
|
|
|
775
|
|
|
776 clrf WREG ; Yes: switch to black
|
|
|
777 movff WREG,win_color1
|
|
|
778 movff WREG,win_color2
|
|
|
779 TFT_box4:
|
|
|
780
|
|
|
781 movff win_width+0,WREG ; compare ?
|
|
|
782 xorwf PRODH,W
|
|
|
783 bnz TFT_box2 ; Loop not finished.
|
|
|
784
|
|
|
785 movlw 0x00 ; NOP, to stop window mode
|
|
|
786 rcall TFT_CmdWrite
|
|
|
787
|
|
|
788 setf WREG ; Reset bargraph mode...
|
|
|
789 movff WREG,win_bargraph
|
|
|
790
|
|
|
791 return
|
|
|
792
|
|
|
793 ;=============================================================================
|
|
|
794 ;Converts 8Bit RGB b'RRRGGGBB' into 16Bit RGB b'RRRRRGGGGGGBBBBB'
|
|
|
795 global TFT_set_color
|
|
|
796
|
|
|
797 TFT_set_color:
|
|
|
798 movwf tft_temp1 ; Get 8Bit RGB b'RRRGGGBB'
|
|
|
799 movwf tft_temp2 ; Copy
|
|
|
800
|
|
|
801 ; Mask Bit 7,6,5,4,3,2
|
|
|
802 movlw b'00000011'
|
|
|
803 andwf tft_temp2,F
|
|
|
804
|
|
|
805 movlw b'00000000'
|
|
|
806 dcfsnz tft_temp2,F
|
|
|
807 movlw b'01010000'
|
|
|
808 dcfsnz tft_temp2,F
|
|
|
809 movlw b'10100000'
|
|
|
810 dcfsnz tft_temp2,F
|
|
|
811 movlw b'11111000'
|
|
|
812 movwf tft_temp3 ; Blue done.
|
|
|
813
|
|
|
814 movff tft_temp1, tft_temp2 ; Copy
|
|
|
815 ; Mask Bit 7,6,5,1,0
|
|
|
816 movlw b'00011100'
|
|
|
817 andwf tft_temp2,F
|
|
|
818 rrncf tft_temp2,F
|
|
|
819 rrncf tft_temp2,F
|
|
|
820
|
|
|
821 movlw b'00000000'
|
|
|
822 dcfsnz tft_temp2,F
|
|
|
823 movlw b'00000100'
|
|
|
824 dcfsnz tft_temp2,F
|
|
|
825 movlw b'00001000'
|
|
|
826 dcfsnz tft_temp2,F
|
|
|
827 movlw b'00001100'
|
|
|
828 dcfsnz tft_temp2,F
|
|
|
829 movlw b'00010000'
|
|
|
830 dcfsnz tft_temp2,F
|
|
|
831 movlw b'00010100'
|
|
|
832 dcfsnz tft_temp2,F
|
|
|
833 movlw b'00100000'
|
|
|
834 dcfsnz tft_temp2,F
|
|
|
835 movlw b'00111111'
|
|
|
836 movwf tft_temp4
|
|
|
837
|
|
|
838 rrcf tft_temp4,F
|
|
|
839 rrcf tft_temp3,F
|
|
|
840
|
|
|
841 rrcf tft_temp4,F
|
|
|
842 rrcf tft_temp3,F
|
|
|
843
|
|
|
844 rrcf tft_temp4,F
|
|
|
845 rrcf tft_temp3,F ; tft_temp3 (b'GGGBBBBB') done.
|
|
|
846
|
|
|
847 movff tft_temp1, tft_temp2 ; Copy
|
|
|
848 clrf tft_temp1
|
|
|
849
|
|
|
850 rrcf tft_temp4,F
|
|
|
851 rrcf tft_temp1,F
|
|
|
852
|
|
|
853 rrcf tft_temp4,F
|
|
|
854 rrcf tft_temp1,F
|
|
|
855
|
|
|
856 rrcf tft_temp4,F
|
|
|
857 rrcf tft_temp1,F ; Green done.
|
|
|
858
|
|
|
859 ; Mask Bit 4,3,2,1,0
|
|
|
860 movlw b'11100000'
|
|
|
861 andwf tft_temp2,F
|
|
|
862
|
|
|
863 rrncf tft_temp2,F
|
|
|
864 rrncf tft_temp2,F
|
|
|
865 rrncf tft_temp2,F
|
|
|
866 rrncf tft_temp2,F
|
|
|
867 rrncf tft_temp2,F
|
|
|
868
|
|
|
869 movlw b'00000000'
|
|
|
870 dcfsnz tft_temp2,F
|
|
|
871 movlw b'00000100'
|
|
|
872 dcfsnz tft_temp2,F
|
|
|
873 movlw b'00001000'
|
|
|
874 dcfsnz tft_temp2,F
|
|
|
875 movlw b'00001100'
|
|
|
876 dcfsnz tft_temp2,F
|
|
|
877 movlw b'00010000'
|
|
|
878 dcfsnz tft_temp2,F
|
|
|
879 movlw b'00010100'
|
|
|
880 dcfsnz tft_temp2,F
|
|
|
881 movlw b'00100000'
|
|
|
882 dcfsnz tft_temp2,F
|
|
|
883 movlw b'00111111'
|
|
|
884 movwf tft_temp4
|
|
|
885
|
|
|
886 rrcf tft_temp4,F
|
|
|
887 rrcf tft_temp1,F
|
|
|
888
|
|
|
889 rrcf tft_temp4,F
|
|
|
890 rrcf tft_temp1,F
|
|
|
891
|
|
|
892 rrcf tft_temp4,F
|
|
|
893 rrcf tft_temp1,F
|
|
|
894
|
|
|
895 rrcf tft_temp4,F
|
|
|
896 rrcf tft_temp1,F
|
|
|
897
|
|
|
898 rrcf tft_temp4,F
|
|
|
899 rrcf tft_temp1,F ; Red done.
|
|
|
900
|
|
|
901 movff tft_temp1,win_color1
|
|
|
902 movff tft_temp3,win_color2 ; Set Bank0 Color registers...
|
|
|
903 return
|
|
|
904
|
|
|
905 ;=============================================================================
|
|
|
906 ; Dump screen contents to the UART
|
|
|
907
|
|
|
908 global TFT_dump_screen
|
|
|
909 TFT_dump_screen:
|
|
|
910 bsf no_sensor_int
|
|
|
911 movlw 'l'
|
|
|
912 movwf TXREG ; Send command echo.
|
|
|
913 call rs232_wait_tx ; wait for UART
|
|
|
914 ;---- Send DISPLAY box command for the full screen window -------------------
|
|
|
915 Index_out 0x50 ; Window Horizontal Start Address
|
|
|
916 Parameter_out 0x00, 0x00 ; 0-239
|
|
|
917 Index_out 0x51 ; Window Horizontal End Address
|
|
|
918 Parameter_out 0x00, 0xEF ; 0-239
|
|
|
919 Index_out 0x52 ; Window Vertical Start Address
|
|
|
920 Parameter_out 0x00, 0x00 ; 0-319
|
|
|
921 Index_out 0x53 ; Window Vertical End Address
|
|
|
922 Parameter_out 0x01, 0x3F ; 0-319
|
|
|
923
|
|
|
924 clrf ds_column
|
|
|
925 rcall dump_screen_pixel_reset
|
|
|
926 dump_screen_1:
|
|
|
927 btg LEDr ; LED activity toggle
|
|
|
928 ; Dump even column
|
|
|
929 movlw .240 ; 240 lines, once.
|
|
|
930 movwf ds_line
|
|
|
931 dump_screen_2:
|
|
|
932 Index_out 0x20 ; Frame Memory Horizontal Address
|
|
|
933 movff ds_line,WREG ; d'0' ... d'239'
|
|
|
934 mullw 1 ; Copy row to PRODH:L
|
|
|
935 rcall TFT_DataWrite_PROD
|
|
|
936
|
|
|
937 movff ds_column,WREG ; Init X position.
|
|
|
938 mullw 2
|
|
|
939 rcall pixel_write_col320 ; Start Address Vertical (.0 - .319)
|
|
|
940
|
|
|
941 rcall TFT_DataRead_PROD ; read pixel
|
|
|
942 rcall dump_screen_pixel
|
|
|
943
|
|
|
944 decfsz ds_line,F
|
|
|
945 bra dump_screen_2
|
|
|
946 rcall dump_screen_pixel_flush
|
|
|
947
|
|
|
948 ; Dump odd column
|
|
|
949 movlw .240 ; 240 lines, twice.
|
|
|
950 movwf ds_line
|
|
|
951 dump_screen_3:
|
|
|
952 Index_out 0x20 ; Frame Memory Horizontal Address
|
|
|
953 movff ds_line,WREG ; d'0' ... d'239'
|
|
|
954 mullw 1 ; Copy row to PRODH:L
|
|
|
955 rcall TFT_DataWrite_PROD
|
|
|
956
|
|
|
957 movff ds_column,WREG ; Init X position.
|
|
|
958 mullw 2
|
|
|
959 movlw .1
|
|
|
960 addwf PRODL,F
|
|
|
961 movlw 0
|
|
|
962 addwfc PRODH,F ; +1
|
|
|
963 rcall pixel_write_col320 ; Start Address Vertical (.0 - .319)
|
|
|
964
|
|
|
965 rcall TFT_DataRead_PROD ; read pixel
|
|
|
966 rcall dump_screen_pixel
|
|
|
967
|
|
|
968 decfsz ds_line,F
|
|
|
969 bra dump_screen_3
|
|
|
970 rcall dump_screen_pixel_flush
|
|
|
971
|
|
|
972 incf ds_column,F
|
|
|
973 movlw .160
|
|
|
974 cpfseq ds_column
|
|
|
975 bra dump_screen_1
|
|
|
976
|
|
|
977 bcf no_sensor_int
|
|
|
978 clrf RCREG1 ; Clear receive buffer
|
|
|
979 bcf RCSTA1,CREN ; Clear receiver status
|
|
|
980 bsf RCSTA1,CREN
|
|
|
981 bsf enable_screen_dumps ; =1: Ignore vin_usb, wait for "l" command (Screen dump)
|
|
|
982 return
|
|
|
983
|
|
|
984
|
|
|
985 ;=============================================================================
|
|
|
986 ; Pixel compression
|
|
|
987 ;
|
|
|
988 ; Input: PRODH:L = pixel.
|
|
|
989 ; Output: Compressed stream on output.
|
|
|
990 ; Compressed format:
|
|
|
991 ; 0ccccccc : BLACK pixel, repeated ccccccc+1 times (1..128).
|
|
|
992 ; 11cccccc : WHITE pixel, repeated cccccc+1 times (1..64).
|
|
|
993 ; 10cccccc HIGH LOW : color pixel (H:L) repeated ccccc+1 times (1..64).
|
|
|
994 ;
|
|
|
995 dump_screen_pixel:
|
|
|
996 movf PRODH,W ; Compare pixel-high
|
|
|
997 xorwf ds_pixel+1,W
|
|
|
998 bnz dump_screen_pixel_1 ; Different -> dump.
|
|
|
999
|
|
|
1000 movf PRODL,W ; Compare pixel-low
|
|
|
1001 xorwf ds_pixel+0,W
|
|
|
1002 bnz dump_screen_pixel_1 ; Different -> dump.
|
|
|
1003
|
|
|
1004 incf ds_count,F ; Same color: just increment.
|
|
|
1005 return
|
|
|
1006
|
|
|
1007 dump_screen_pixel_1: ; Send (pixel,count) tuple
|
|
|
1008 movf ds_count,W ; Is count zero ?
|
|
|
1009 bz dump_screen_pixel_2 ; Yes: skip sending.
|
|
|
1010
|
|
|
1011 movf ds_pixel+1,W ; This is a BLACK pixel ?
|
|
|
1012 iorwf ds_pixel+0,W
|
|
|
1013 bz dump_screen_pix_black ; YES.
|
|
|
1014
|
|
|
1015 movf ds_pixel+1,W ; This is a white pixel ?
|
|
|
1016 andwf ds_pixel+0,W
|
|
|
1017 incf WREG
|
|
|
1018 bz dump_screen_pix_white ; YES.
|
|
|
1019
|
|
|
1020 ; No: write the pixel itself...
|
|
|
1021 movlw .64 ; Max color pixel on a single byte.
|
|
|
1022 cpfsgt ds_count ; Skip if count > 64
|
|
|
1023 movf ds_count,W ; W <- min(64,count)
|
|
|
1024 subwf ds_count,F ; ds_count <- ds_count-W
|
|
|
1025 decf WREG ; Save as 0..63
|
|
|
1026 iorlw b'10000000' ; MARK as a color pixel.
|
|
|
1027
|
|
|
1028 movwf TXREG
|
|
|
1029 call rs232_wait_tx ; wait for UART
|
|
|
1030 movff ds_pixel+1,TXREG
|
|
|
1031 call rs232_wait_tx ; wait for UART
|
|
|
1032 movff ds_pixel+0,TXREG
|
|
|
1033 call rs232_wait_tx ; wait for UART
|
|
|
1034 bra dump_screen_pixel_1
|
|
|
1035
|
|
|
1036 dump_screen_pixel_2:
|
|
|
1037 movff PRODH,ds_pixel+1 ; Save new pixel color
|
|
|
1038 movff PRODL,ds_pixel+0
|
|
|
1039 movlw 1
|
|
|
1040 movwf ds_count ; And set count=1.
|
|
|
1041 return
|
|
|
1042
|
|
|
1043 dump_screen_pix_black:
|
|
|
1044 movlw .128 ; Max black pixel on a single byte.
|
|
|
1045 cpfsgt ds_count ; Skip if count > 128
|
|
|
1046 movf ds_count,W ; W <- min(128,count)
|
|
|
1047 subwf ds_count,F ; ds_count <- ds_count-W
|
|
|
1048 decf WREG ; Save as 0..127
|
|
|
1049 dump_screen_pix_3:
|
|
|
1050 movwf TXREG
|
|
|
1051 call rs232_wait_tx
|
|
|
1052 bra dump_screen_pixel_1 ; More to dump ?
|
|
|
1053
|
|
|
1054 dump_screen_pix_white:
|
|
|
1055 movlw .64 ; Max white pixel on a single byte.
|
|
|
1056 cpfsgt ds_count ; Skip if count > 64
|
|
|
1057 movf ds_count,W ; W <- min(64,count)
|
|
|
1058 subwf ds_count,F ; ds_count <- ds_count-W
|
|
|
1059 decf WREG ; Save as 0..63
|
|
|
1060 iorlw b'11000000' ; MARK as a compressed white.
|
|
|
1061 bra dump_screen_pix_3
|
|
|
1062
|
|
|
1063 dump_screen_pixel_flush:
|
|
|
1064 clrf PRODH
|
|
|
1065 clrf PRODL
|
|
|
1066 rcall dump_screen_pixel_1 ; Send it
|
|
|
1067 dump_screen_pixel_reset:
|
|
|
1068 clrf ds_count ; But clear count.
|
|
|
1069 return
|
|
|
1070
|
|
|
1071 end |
