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annotate src/ostc3.asm @ 174:932e91074bdb

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author heinrichsweikamp
date Sun, 05 Oct 2014 15:36:17 +0200
parents e2f04bb2539c
children a004b482604a
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1 ;=============================================================================
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2 ;
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3 ; File ostc3.asm
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4 ;
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5 ; Definition of the ostc3 dive computer platform.
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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 ; 2011-06-24 : [MH] Added clock speeds.
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12 #include "ostc3.inc"
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13
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14 ;=============================================================================
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15 ;----------------------------- CONFIG ---------------------------------
1
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16 CONFIG RETEN = OFF ;Disabled - Controlled by SRETEN bit
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17 CONFIG SOSCSEL = HIGH ;High Power SOSC circuit selected
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18 CONFIG XINST = OFF ;Code won't excute in extended mode...
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19 CONFIG FOSC = INTIO2 ;Internal RC oscillator, no clock-out
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20 CONFIG PLLCFG = OFF
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21 CONFIG IESO = OFF ;Disabled
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22 CONFIG PWRTEN = OFF ;Disabled, because incompatible with ICD3 (Ri-400)
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23 CONFIG BOREN = ON ;Controlled with SBOREN bit
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24 CONFIG BORV = 2 ;2.0V
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25 CONFIG BORPWR = MEDIUM ;BORMV set to medium power level
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26 CONFIG WDTEN = ON ;WDT controlled by SWDTEN bit setting
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27 CONFIG WDTPS = 128 ;1:128
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28 CONFIG RTCOSC = SOSCREF ;RTCC uses SOSC
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29 CONFIG MCLRE = ON ;MCLR Enabled, RG5 Disabled
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30 CONFIG CCP2MX = PORTBE ;RE7-Microcontroller Mode/RB3-All other modes
0
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31 ;=============================================================================
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32 boot CODE
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33 global init_ostc3
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34
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35 init_ostc3:
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36 banksel common ; Bank1
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37 ;init oscillator
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38 movlw b'01110010'
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39 movwf OSCCON ; 16MHz INTOSC
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40 movlw b'00001000'
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41 movwf OSCCON2 ; Secondary Oscillator running
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42 movlw b'00000000'
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43 movwf OSCTUNE ; 4x PLL Disable (Bit6) - only works with 8 or 16MHz (=32 or 64MHz)
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44 bcf RCON,SBOREN ; Bown-Out off
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45 bcf RCON,IPEN ; Priority Interrupts off
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46
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47 ; I/O Ports
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48 banksel 0xF16 ; Addresses, F16h through F5Fh, are also used by SFRs, but are not part of the Access RAM.
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49
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50 clrf REFOCON ; No reference oscillator active on REFO pin
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51 clrf ODCON1 ; Disable Open Drain capability
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52 clrf ODCON2 ; Disable Open Drain capability
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53 clrf ODCON3 ; Disable Open Drain capability
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54
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55 movlw b'11000000' ; ANSEL, AN7 and AN6 -> Analog inputs, PORTA is digital.
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56 movwf ANCON0
113
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57 movlw b'00000111' ; ANSEL, AN8, AN9, AN10 -> Analog in
0
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58 movwf ANCON1
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59 movlw b'00000010' ; ANSEL, AN17 -> Analog input
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60 movwf ANCON2
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61
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62 banksel common
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63
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64 movlw b'00000000' ; 1= Input -> Data TFT_high
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65 movwf TRISA
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66 movlw b'00000000' ; Init port
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67 movwf PORTA
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68
113
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69 movlw b'00000011' ; 1= Input, (RB0, RB1) -> Switches, RB2 -> Power_MCP, RB3 -> s8_npower, RB4 -> LED_green, RB5 -> /TFT_POWER
0
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70 movwf TRISB
113
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71 movlw b'00101000' ; Init port
0
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72 movwf PORTB
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73
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74 movlw b'10011010' ; 1= Input, (RC0, RC1) -> SOSC, RC2 -> TFT_LED_PWM, (RC3,RC4) -> I²C, RC5 -> MOSI_MS5541, (RC6, RC7) -> UART1
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75 movwf TRISC
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76 movlw b'00000000' ; Init port
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77 movwf PORTC
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78
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79 movlw b'00100000' ; 1= Input, RD0 -> TFT_NCS, RD1 -> TFT_RS, RD2 -> TFT_NWR, RD3 -> TFT_RD, RD4 -> MOSI_Flash, RD5 -> MISO_Flash, RD6 -> CLK_Flash, RD7 -> TFT_NRESET
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80 movwf TRISD
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81 movlw b'00000000' ; Init port
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82 movwf PORTD
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83
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84 movlw b'00000000' ; 1= Input, RE1 -> Power_IR, RE2 -> CS_MCP, RE3 -> LED_blue, RE4 -> power_sw1,
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85 movwf TRISE
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86 movlw b'00010000' ; Init port
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87 movwf PORTE
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88
113
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89 movlw b'00111110' ; 1= Input, (RF1, RF2, RF3, RF4, RF5) -> Analog
0
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90 movwf TRISF
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91 movlw b'00000000' ; Init port
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92 movwf PORTF
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93
113
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94 movlw b'00001110' ; 1= Input, <7:6> not implemented, RG0 -> TX3_PIEZO_CFG, RG2 -> RX2, RG3 -> AN17_RSSI, RG4 -> SOSC_OUT, RG5 -> /RESET
0
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95 movwf TRISG
113
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96 movlw b'00000001' ; Init port
0
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97 movwf PORTG
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98
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99 movlw b'00000000' ; 1= Input -> Data TFT_low
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100 movwf TRISH
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101 movlw b'00000000' ; Init port
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102 movwf PORTH
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103
120
e2f04bb2539c battery check in sleep
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104 movlw b'10011011' ; 1= Input, RJ4 -> vusb_in, RJ5 -> power_sw2, RJ6 -> CLK_MS5541, RJ7 -> MISO_MS5541
0
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105 movwf TRISJ
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106 movlw b'00100000' ; Init port
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107 movwf PORTJ
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108
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109
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110 ; Timer 0
28
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111 movlw b'00000001' ; Timer0 with 1:4 prescaler
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112 ; movlw b'00001000' ; Timer0 with 1:1 prescaler
0
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113 movwf T0CON
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114
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115 ; Timer 1 - Button hold-down timer
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116 movlw b'10001100' ; 32768Hz clock source, 1:1 Prescaler -> ; 30,51757813µs/bit in TMR1L:TMR1H
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117 movwf T1CON
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118
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119 banksel 0xF16 ; Addresses, F16h through F5Fh, are also used by SFRs, but are not part of the Access RAM.
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120
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121 ; RTCC
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122 movlw 0x55
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123 movwf EECON2
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124 movlw 0xAA
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125 movwf EECON2
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126 bsf RTCCFG,RTCWREN ; Unlock sequence for RTCWREN
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127 bsf RTCCFG,RTCPTR1
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128 bsf RTCCFG,RTCPTR0
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129 bsf RTCCFG,RTCEN ; Module enable
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130 bsf RTCCFG,RTCOE ; Output enable
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131 movlw b'00000100' ; 32768Hz SOCS on RTCC pin (PORTG,4) Bit7-5: Pullups for Port D, E and J
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132 movwf PADCFG1
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133 movlw b'11000100'
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134 movwf ALRMCFG ; 1 second alarm
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135 movlw d'1'
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136 movwf ALRMRPT ; Alarm repeat counter
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137 movlw 0x55
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138 movwf EECON2
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139 movlw 0xAA
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140 movwf EECON2
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141 bcf RTCCFG,RTCWREN ; Lock sequence for RTCWREN
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142
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143 banksel common
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144 ; A/D Converter
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145 movlw b'00011000' ; power off ADC, select AN6
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146 movwf ADCON0
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147 movlw b'00100000' ; 2.048V Vref+
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148 movwf ADCON1
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149 movlw b'10001101' ; Right justified
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150 movwf ADCON2
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151
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152
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153 ;init serial port1 (TRISC6/7)
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154 movlw b'00001000' ; BRG16=1
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155 movwf BAUDCON1
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156 movlw b'00100100' ; BRGH=1, SYNC=0
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157 movwf TXSTA1
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158 movlw .34 ; SPBRGH:SPBRG = .34 : 114285 BAUD @ 16MHz (+0,79% Error to 115200 BAUD)
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159 movwf SPBRG1 ; SPBRGH:SPBRG = .207 : 19230 BAUD @ 16MHz (-0,16% Error to 19200 BAUD)
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160 clrf SPBRGH1 ;
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161 movlw b'10010000'
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162 movwf RCSTA1
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163
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164 ;init serial port2 (TRISG2)
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165 banksel BAUDCON2
113
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166 movlw b'00100000' ; BRG16=0 ; inverted for IR
0
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167 movwf BAUDCON2
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168 movlw b'00100000' ; BRGH=0, SYNC=0
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169 movwf TXSTA2
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170 movlw .102 ; SPBRGH:SPBRG = .102 : 2403 BAUD @ 16MHz
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171 movwf SPBRG2
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172 clrf SPBRGH2
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173 movlw b'10010000'
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174 movwf RCSTA2
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175 banksel common
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176
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177 ; Timer3 for IR-RX Timeout
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178 clrf T3GCON ; Reset Timer3 Gate Control register
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179 ; movlw b'10001101' ; 1:1 Prescaler -> 2seconds@32768Hz, not synced
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180 movlw b'10001001' ; 1:1 Prescaler -> 2seconds@32768Hz, synced
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181 ; 30,51757813µs/bit in TMR3L:TMR3H
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182 movwf T3CON
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183
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184 ; SPI Module(s)
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185 ; SPI2: External Flash
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186 movlw b'00110000'
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187 movwf SSP2CON1
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188 movlw b'00000000'
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189 movwf SSP2STAT
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190 ; ->0,25MHz Bit clock @1MHz mode (Eco)
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191 ; -> 4MHz Bit clock @16MHz mode (Normal)
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192 ; -> 16MHz Bit clock @64MHz mode (Fastest)
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193
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194 ; MSSP1 Module: I2C Master
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195 movlw b'00101000' ; I2C Master Mode
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196 movwf SSP1CON1
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197 movlw b'00000000'
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198 movwf SSP1CON2
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199 movlw 0x27
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200 movwf SSP1ADD ; 100kHz @ 16MHz Fosc
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201
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202 ; PWM Module(s)
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203 ; PWM1 for LED dimming
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204 movlw b'00001100'
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205 movwf CCP1CON
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206 movlw b'00000001'
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207 movwf PSTR1CON ; Pulse steering disabled
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208 movlw d'255'
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209 movwf PR2 ; Period
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210 ; 255 is max brightness (300mW)
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211 clrf CCPR1L ; Duty cycle
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212 clrf CCPR1H ; Duty cycle
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213 movlw T2CON_NORMAL
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214 movwf T2CON
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215
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216 ; Timer5 for ISR-independent wait routines
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217 clrf T5GCON ; Reset Timer5 Gate Control register
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218 ; movlw b'10001101' ; 1:1 Prescaler -> 2seconds@32768Hz, not synced
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219 movlw b'10001001' ; 1:1 Prescaler -> 2seconds@32768Hz, synced
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220 ; 30,51757813µs/bit in TMR5L:TMR5H
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221 movwf T5CON
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222
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223 ; Timer7 for 62,5ms Interrupt (Sensor states)
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224 banksel 0xF16 ; Addresses, F16h through F5Fh, are also used by SFRs, but are not part of the Access RAM.
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225 clrf T7GCON ; Reset Timer7 Gate Control register
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226 ; movlw b'10001101' ; 1:1 Prescaler -> 2seconds@32768Hz, not synced
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227 movlw b'10001001' ; 1:1 Prescaler -> 2seconds@32768Hz, synced
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228 movwf T7CON
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229 clrf TMR7L
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230 movlw .248
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231 movwf TMR7H ; -> Rollover after 2048 cycles -> 62,5ms
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232
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233 banksel common
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234 ; Interrupts
50
ec4d8503ec45 NEW: user-selectable color schemes
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235 movlw b'11010000'
0
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236 movwf INTCON
77
131e6dd9e201 BUGFIX: Potential bug to freeze the OSTC3 after battery change or update
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237 movlw b'00001000' ; BIT7=1: Pullup for PORTB disabled
0
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238 movwf INTCON2
77
131e6dd9e201 BUGFIX: Potential bug to freeze the OSTC3 after battery change or update
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239 movlw b'00000000'
0
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240 movwf INTCON3
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241 movlw b'00000001' ; Bit0: TMR1
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242 movwf PIE1
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243 movlw b'00000010' ; Bit1: TMR3
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244 movwf PIE2
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245 movlw b'00000000' ; Bit1: TMR5
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246 movwf PIE5
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247 movlw b'00100001' ; Bit0: RTCC, Bit5: UART2
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248 movwf PIE3
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249 movlw b'00001000' ; Bit3: TMR7
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250 movwf PIE5
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251
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252 bsf power_sw1
58
c4876e4b3563 startup with 1.6 hardware
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253 btfss power_sw1
c4876e4b3563 startup with 1.6 hardware
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254 bra $-4
0
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255 bsf power_sw2
58
c4876e4b3563 startup with 1.6 hardware
heinrichsweikamp
parents: 50
diff changeset
256 btfss power_sw2
c4876e4b3563 startup with 1.6 hardware
heinrichsweikamp
parents: 50
diff changeset
257 bra $-4
0
heinrichsweikamp
parents:
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258
heinrichsweikamp
parents:
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259 return
heinrichsweikamp
parents:
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260
heinrichsweikamp
parents:
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261 ;=============================================================================
heinrichsweikamp
parents:
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262 global speed_eco
heinrichsweikamp
parents:
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263 speed_eco:
heinrichsweikamp
parents:
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264 movlw d'1'
heinrichsweikamp
parents:
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265 movff WREG,speed_setting ; Bank-independent
heinrichsweikamp
parents:
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266 ; Done in ISR
heinrichsweikamp
parents:
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267 return
heinrichsweikamp
parents:
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268 ;=============================================================================
heinrichsweikamp
parents:
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269 global speed_normal
heinrichsweikamp
parents:
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270 speed_normal:
heinrichsweikamp
parents:
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271 movlw d'2'
heinrichsweikamp
parents:
diff changeset
272 movff WREG,speed_setting ; Bank-independent
heinrichsweikamp
parents:
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273 ; Done in ISR
heinrichsweikamp
parents:
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274 return
heinrichsweikamp
parents:
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275 ;=============================================================================
heinrichsweikamp
parents:
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276 global speed_fastest
heinrichsweikamp
parents:
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277 speed_fastest:
heinrichsweikamp
parents:
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278 movlw d'3'
heinrichsweikamp
parents:
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279 movff WREG,speed_setting ; Bank-independent
heinrichsweikamp
parents:
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280 ; Done in ISR
heinrichsweikamp
parents:
diff changeset
281 return
heinrichsweikamp
parents:
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282 ;=============================================================================
heinrichsweikamp
parents:
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283
heinrichsweikamp
parents:
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284 END