annotate code_part1/OSTC_code_asm_part1/eeprom_rs232.asm @ 812:86efd57c158c

minor italian update
author heinrichsweikamp
date Wed, 25 Mar 2015 18:24:58 +0100
parents c50296c3059e
children 2a0e5d884fc3
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1 ; OSTC - diving computer code
807
c50296c3059e BUGFIX: Divetime had unwanted "." behind the minutes
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2 ; Copyright (C) 2015 HeinrichsWeikamp GbR
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3
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4 ; This program is free software: you can redistribute it and/or modify
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5 ; it under the terms of the GNU General Public License as published by
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6 ; the Free Software Foundation, either version 3 of the License, or
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7 ; (at your option) any later version.
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8
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9 ; This program is distributed in the hope that it will be useful,
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10 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ; GNU General Public License for more details.
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13
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14 ; You should have received a copy of the GNU General Public License
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15 ; along with this program. If not, see <http://www.gnu.org/licenses/>.
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16
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17
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18 ; internal EEPROM and RS232 UART interface
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19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com
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20 ; written: 02/01/06
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21 ; last updated: 090109
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22 ; known bugs:
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23 ; ToDo:
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24
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25 write_int_eeprom macro eeprom_address
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26 movlw eeprom_address
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27 call write_int_eeprom_1
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28 endm
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29
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30 write_int_eeprom_1:
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31 movwf EEADR
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32 bra write_eeprom ; writes and "returns" after write
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33
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34 read_int_eeprom macro eeprom_address
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35 movlw eeprom_address
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36 call read_int_eeprom_1
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37 endm
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38
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39 read_int_eeprom_1:
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40 movwf EEADR
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41 bra read_eeprom ; reads and "returns" after write
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42
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43 internal_eeprom_access_b2: ; accesses internal EEPROM BANK 2 via the UART
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44 bcf internal_eeprom_write3 ; clear flag!
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45 movlw d'2'
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46 movwf EEADRH ;BANK2
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47 movlw "n"
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48 bra internal_eeprom_access1 ; Continue with common routines
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49
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50 internal_eeprom_access_b1: ; accesses internal EEPROM BANK 1 via the UART
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51 bcf internal_eeprom_write2 ; clear flag!
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52 movlw d'1'
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53 movwf EEADRH ;BANK1
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54 movlw "i"
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55 bra internal_eeprom_access1 ; Continue with common routines
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56
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57 internal_eeprom_access_b0: ; accesses internal EEPROM BANK 0 via the UART
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58 bcf internal_eeprom_write ; clear flag!
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59 clrf EEADRH ; Bank0
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60 movlw "d"
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61 ; bra internal_eeprom_access1 ; Continue with common routines
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62 internal_eeprom_access1:
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63 movwf TXREG ; Send command echo ("i", "d" or "n")
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64 bsf no_sensor_int ; No Sensor Interrupt
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65 movlw d'4'
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66 movwf EEADR
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67 bcf PIE1,RCIE ; no interrupt for UART
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68 bcf PIR1,RCIF ; clear flag
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69 bsf LED_blue ; LEDusb ON
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70
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71 internal_eeprom_access2:
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72 rcall rs232_get_byte ; Get byte to write...
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73 movff RCREG,EEDATA ; copy to write register
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74 bsf LED_red ; show activity
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75
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76 btfsc rs232_recieve_overflow ; overflow recieved?
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77 bra internal_eeprom_access3 ; Yes, abort!
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78
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79 rcall write_eeprom ; No, write one byte
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80 bcf LED_red
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81 movff EEDATA,TXREG ; Send echo!
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82 rcall rs232_wait_tx ; Wait for UART
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83 incfsz EEADR,F ; Do until EEADR rolls to zero
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84 bra internal_eeprom_access2
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85 internal_eeprom_access2a:
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86 bcf LED_blue ; LEDusb OFF
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87 bcf PIR1,RCIF ; clear flag
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88 bsf PIE1,RCIE ; re-enable interrupt for UART
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89 clrf EEADRH ; Point to Bank0 again
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90 bcf rs232_recieve_overflow ; Clear Flag
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91 bcf no_sensor_int ; Renable Sensor Interrupt
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92 goto restart
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93
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94 internal_eeprom_access3: ; Overflow! Abort writing
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95 movlw 0xFF
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96 movwf TXREG ; Error Byte
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97 bra internal_eeprom_access2a ; Quit
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98
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99 read_eeprom: ; reads from internal eeprom
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100 bcf EECON1,EEPGD
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101 bcf EECON1,CFGS
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102 bsf EECON1,RD
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103 return
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104
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105 write_eeprom: ; writes into internal eeprom
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106 bcf EECON1,EEPGD
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107 bcf EECON1,CFGS
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108 bsf EECON1,WREN
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109
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110 bcf INTCON,GIE ; even the RTC will be delayed for the next 5 instructions...
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111 movlw 0x55
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112 movwf EECON2
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113 movlw 0xAA
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114 movwf EECON2
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115 bsf EECON1,WR
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116 bsf INTCON,GIE ; ...but the flag for the ISR routines were still set, so they will interrupt now!
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117
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118 write_eep2:
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119 btfsc EECON1,WR
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120 bra write_eep2 ; wait about 4ms...
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121 bcf EECON1,WREN
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122 return
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123
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124 enable_rs232: ;IO Ports must be input in order to activate the module
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125 bsf TRISC,6 ; TX Pin
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126 bsf TRISC,7 ; RX Pin
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127
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128 movlw b'00100100' ; BRGH=1
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129 movwf TXSTA
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130 movlw b'10010000'
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131 movwf RCSTA
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132 movlw b'00001000'
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133 movwf BAUDCON
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134 clrf SPBRGH
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135 movlw SPBRG_VALUE ; Take care of the baud rate when changing Fosc!
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136 movwf SPBRG
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137 clrf RCREG
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138 clrf PIR1
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139 bsf PIE1,RCIE ; enable interrupt for RS232
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140 return
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141
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142 disable_rs232:
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143 clrf TXSTA
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144 clrf RCSTA
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145 bcf PIE1,RCIE ; disable interrupt for RS232
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146 bcf TRISC,6 ; TX Pin
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147 bcf TRISC,7 ; RX Pin
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148 bcf PORTC,6 ; TX Pin
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149 bcf PORTC,7 ; RX Pin
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150 return
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151
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152 rs232_wait_tx:
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153 btfss RCSTA,SPEN ; Transmitter active?
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154 return ; No, return!
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155 nop
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156 btfss TXSTA,TRMT ; RS232 Busy?
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157 bra rs232_wait_tx ; yes, wait...
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158 return ; Done.
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159
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160
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161 rs232_get_byte:
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162 bcf PIR1,RCIF ; clear flag
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163 bcf rs232_recieve_overflow ; clear flag
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164 clrf uart1_temp
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165 rs232_get_byte2:
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166 clrf uart2_temp
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167 rs232_get_byte3:
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168 btfsc PIR1,RCIF ; data arrived?
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169 return ; data received
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170
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171 nop ; Wait 1us * 255 * 255 = 65ms+x Timeout/Byte
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172 nop
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173 nop
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174 nop
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175 nop
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176 nop
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177 nop
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178 nop
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179 btfsc PIR1,RCIF ; data arrived?
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180 return
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181 nop
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182 nop
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183 nop
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184 nop
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185 nop
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186 nop
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187 nop
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188 nop
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189 btfsc PIR1,RCIF ; data arrived?
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190 return
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191 nop
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192 nop
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193 nop
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194 nop
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195 nop
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196 nop
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197 nop
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198 nop
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199 btfsc PIR1,RCIF ; data arrived?
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200 return
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201 nop
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202 nop
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203 nop
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diff changeset
204 nop
e2acb601504c some cleanup
heinrichsweikamp
parents: 463
diff changeset
205 nop
e2acb601504c some cleanup
heinrichsweikamp
parents: 463
diff changeset
206 nop
e2acb601504c some cleanup
heinrichsweikamp
parents: 463
diff changeset
207 nop
e2acb601504c some cleanup
heinrichsweikamp
parents: 463
diff changeset
208 nop
0
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
209 btfsc PIR1,RCIF ; data arrived?
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
210 return
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
211
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
212 decfsz uart2_temp,F
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
213 bra rs232_get_byte3
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
214 decfsz uart1_temp,F
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
215 bra rs232_get_byte2
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
216 ; timeout occoured (about 20ms)
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
217 bcf RCSTA,CREN ; Clear receiver status
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
218 bsf RCSTA,CREN
96a35aeda5f2 Initial setup
heinrichsweikamp
parents:
diff changeset
219 bsf rs232_recieve_overflow ; set flag
283
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
220 return ; and return anyway
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
221
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
222 uart_115k_bootloader:
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
223 bcf PIE1,RCIE ; disable interrupt for RS232
681
6e456a6398e0 Hardware4 support
heinrichsweikamp
parents: 578
diff changeset
224 call DISP_ClearScreen ; Clear screen
283
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
225 movlw color_red
681
6e456a6398e0 Hardware4 support
heinrichsweikamp
parents: 578
diff changeset
226 call DISP_set_color ; Set to Red
283
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
227 DISPLAYTEXTH d'302' ; Bootloader
537
3091628b2742 BUGFIX: Spurious logbook read issue
heinrichsweikamp
parents: 529
diff changeset
228 bcf RCSTA,CREN ; Clear receiver status
3091628b2742 BUGFIX: Spurious logbook read issue
heinrichsweikamp
parents: 529
diff changeset
229 bsf RCSTA,CREN
3091628b2742 BUGFIX: Spurious logbook read issue
heinrichsweikamp
parents: 529
diff changeset
230 bcf PIR1,RCIF ; clear flag
3091628b2742 BUGFIX: Spurious logbook read issue
heinrichsweikamp
parents: 529
diff changeset
231 movlw d'200' ; one second
284
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
232 movwf uart1_temp
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
233 uart_115k_bootloader0:
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
234 btfsc PIR1,RCIF ; New byte in UART?
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
235 bra uart_115k_bootloader1 ; Yes, Check if 0xC1
537
3091628b2742 BUGFIX: Spurious logbook read issue
heinrichsweikamp
parents: 529
diff changeset
236 WAITMS d'5'
284
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
237 decfsz uart1_temp,F
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
238 bra uart_115k_bootloader0
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
239 uart_115k_bootloader2:
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
240 DISPLAYTEXTH d'304' ; Aborted!
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
241 movlw d'8' ; Two seconds
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
242 movwf uart1_temp
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
243 uart_115k_bootloader3:
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
244 WAITMS d'250'
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
245 decfsz uart1_temp,F
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
246 bra uart_115k_bootloader3
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
247 goto restart
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
248
908d0013727e 115200 baud bootloader tested and debugged
heinrichsweikamp
parents: 283
diff changeset
249 uart_115k_bootloader1:
283
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
250 movlw 0xC1
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
251 cpfseq RCREG ; 115200Baud Bootloader request?
720
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
252 bra uart_115k_bootloader2 ; No, Abort
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
253
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
254 ; Vault date and time during update
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
255 ; EEPROM Bank1
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
256 ; Byte 5: =0xAA -> reload time and date in "restart:"
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
257 ; Byte 6-11: YYMMDDHHMMSS
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
258 movlw .1
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
259 movwf EEADRH
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
260 movff year,EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
261 write_int_eeprom d'6'
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
262 movff month,EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
263 write_int_eeprom d'7'
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
264 movff day,EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
265 write_int_eeprom d'8'
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
266 movff hours,EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
267 write_int_eeprom d'9'
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
268 movff mins,EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
269 write_int_eeprom d'10'
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
270 movff secs,EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
271 write_int_eeprom d'11'
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
272 movlw 0xAA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
273 movwf EEDATA
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
274 write_int_eeprom d'5' ; Set flag
4452837aff37 Vault date and time during update
heinrichsweikamp
parents: 703
diff changeset
275 clrf EEADRH
283
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
276 DISPLAYTEXTH d'303' ; Yes, "Please wait!"
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
277 clrf INTCON ; Interrupts disabled
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
278 bcf PIR1,RCIF ; clear flag
4ec488f046f4 Battery sign color coded, work on new uart-started 115200Baud bootloader (Do NOT use yet!)
heinrichsweikamp
parents: 50
diff changeset
279 goto 0x17F56 ; Enter straight into bootloader. Good luck!