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1 ;=============================================================================
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2 ;
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3 ; File dump_screen.asm
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4 ;
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5 ; Dump screen contains to the serial interface.
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6 ;
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7 ; This program is free software: you can redistribute it and/or modify
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8 ; it under the terms of the GNU General Public License as published by
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9 ; the Free Software Foundation, either version 3 of the License, or
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10 ; (at your option) any later version.
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11 ;
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12 ; This program is distributed in the hope that it will be useful,
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13 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 ; GNU General Public License for more details.
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16 ;
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17 ; You should have received a copy of the GNU General Public License
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18 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 ;
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20 ; Copyright (c) 2011, JD Gascuel.
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21 ;=============================================================================
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22 ; HISTORY
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23 ; 2011-05-08 : [jDG] Creation.
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24 ;
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25 ; BUGS :
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26 ; * ...
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27 ;=============================================================================
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28
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29 ; Manage interface to the OSTC platform:
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30 dump_screen:
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31 bcf uart_dump_screen ; clear flag!
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32
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33 movlw 'l'
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34 movwf TXREG ; Send command echo.
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35 bsf no_sensor_int ; No Sensor Interrupt
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36 bcf PIE1,RCIE ; no interrupt for UART
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37 bcf PIR1,RCIF ; clear flag
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38 bsf LED_blue ; LEDusb ON
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39 call rs232_wait_tx ; wait for UART
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40
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41 call dump_screen_0
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42
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43 bcf no_sensor_int ; Restore Sensor Interrupt
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44 bcf LED_blue ; Clear led
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45 bcf LED_red ; Clear led
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46 bsf PIE1,RCIE ; Interrupt for RS232
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47 return
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48
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49 ;=============================================================================
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50 ; Dump screen contains to the UART
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51
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52 dump_screen_0:
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53
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54 ;---- Send OLED box command for the full screen window -------------------
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55 mullw 0 ; PRODH:L <- 0
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56
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57 AA_CMD_WRITE 0x35 ; VerticalStartAddress HIGH:LOW
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58 AA_DATA_WRITE_PROD ; 00:00
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59
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60 AA_CMD_WRITE 0x36 ; VerticalEndAddress HIGH:LOW
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61 AA_DATA_WRITE 0x01
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62 AA_DATA_WRITE 0x3F
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63
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64 AA_CMD_WRITE 0x37 ; HorizontalAddress START:END
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65 AA_DATA_WRITE 0x00
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66 AA_DATA_WRITE 0xEF
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67
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68 AA_CMD_WRITE 0x20 ; Start Address Horizontal (.0 - .239)
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69 AA_DATA_WRITE_PROD ; 00:00
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70
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71 AA_CMD_WRITE 0x21 ; Start Address Vertical (.0 - .319)
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72 AA_DATA_WRITE_PROD ; 00:00
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73
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74 AA_CMD_WRITE 0x22 ; Start reading.
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75 rcall PLED_DataRead ; Dummy pixel to skip.
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76 rcall PLED_DataRead ; Dummy pixel to skip.
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77
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78 movlw .160 ; 160x2 columns
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79 movwf PRODH
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80 dump_screen_1:
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81 btg LED_red ; LEDactivity toggle
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82
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83 movlw .240 ; 240 lines
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84 movwf PRODL
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85
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86 dump_screen_2:
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87 setf TRISD ; PortD as input.
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88
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89 rcall PLED_DataRead ; read first pixel-low byte
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90 movwf TXREG ; send
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91 call rs232_wait_tx ; wait for UART
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92
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93 rcall PLED_DataRead ; read first pixel-high byte
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94 movwf TXREG ; send
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95 call rs232_wait_tx ; wait for UART
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96
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97 rcall PLED_DataRead ; read second pixel-low byte
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98 movwf TXREG ; send
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99 call rs232_wait_tx ; wait for UART
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100
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101 rcall PLED_DataRead ; read second pixel-high byte
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102 movwf TXREG ; send
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103 call rs232_wait_tx ; wait for UART
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104
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105 clrf TRISD ; Back to normal (PortD as output)
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106
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107 decfsz PRODL,F
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108 bra dump_screen_2
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109
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110 AA_CMD_WRITE 0x22 ; Sync high/low byte, again.
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111
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112 decfsz PRODH,F
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113 bra dump_screen_1
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114
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115 AA_CMD_WRITE 0x00 ; NOP, to stop Address Update Counter
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116 return
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117
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