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1 ;=============================================================================
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2 ;
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634
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3 ; File eeprom_rs232.asm * combined next generation V3.09.4n
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4 ;
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5 ; Internal EEPROM, RS232
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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 ; 2011-08-06 : [mH] moving from OSTC code
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11
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275
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12 #include "hwos.inc"
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13 #include "wait.inc"
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582
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14 #include "shared_definitions.h"
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15 #include "rtc.inc"
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16 #include "external_flash.inc"
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17
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18 #DEFINE INSIDE_EEPROM_RS232
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19 #include "eeprom_rs232.inc"
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20
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21
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22 extern lt2942_charge_done
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23
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24
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25 ;=============================================================================
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26 eeprom CODE
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27 ;=============================================================================
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28
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29 ;-----------------------------------------------------------------------------
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30 ;
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31 ; EEPROM Functions - for EEPROM Macros and Memory Map, see eeprom_rs232.inc
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32 ;
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33 ;-----------------------------------------------------------------------------
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34
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35
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36 ;-----------------------------------------------------------------------------
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37 ; Read from internal EEPROM
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38 ;
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39 ; Input: EEADRH:EEADR = EEPROM address
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40 ; Output: EEDATA
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41 ; Trashed: NONE
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42 ;
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43 global read_eeprom
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44 read_eeprom:
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45 bcf EECON1,EEPGD ; access data EEPROM
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46 bcf EECON1,CFGS ; ...
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47 bsf EECON1,RD ; initiate reading
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48 return ; done
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49
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50
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51 ;-----------------------------------------------------------------------------
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52 ; Write into internal EEPROM
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53 ;
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54 ; Input: EEADRH:EEADR = EEPROM address
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55 ; EEDATA = byte to write
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56 ; Trashed: WREG
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57 ;
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58 global write_eeprom
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59 write_eeprom:
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60 bcf EECON1,EEPGD ; access data EEPROM
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61 bcf EECON1,CFGS ; ...
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62 bsf EECON1,WREN ; enable writing
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63 bcf INTCON,GIE ; disable interrupts
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64 movlw 0x55 ; unlock sequence
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65 movwf EECON2 ; ...
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66 movlw 0xAA ; ...
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67 movwf EECON2 ; ...
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68 bsf EECON1,WR ; start write operation
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69 write_eeprom_loop:
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70 btfsc EECON1,WR ; write completed?
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71 bra write_eeprom_loop ; NO - loop waiting
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72 bcf EECON1,WREN ; YES - disable writing
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73 bsf INTCON,GIE ; - re-enable interrupts
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74 return ; - done
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75
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76
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77 ;-----------------------------------------------------------------------------
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78 ; EEPROM read and write Functions to be used via Macros
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79 ;
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80 global eeprom_read_common
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81 eeprom_read_common:
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82 movwf eeprom_loop ; initialize loop counter
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83 eeprom_read_common_loop:
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84 rcall read_eeprom ; execute read
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85 movff EEDATA,POSTINC1 ; copy byte from EEPROM data register to memory
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86 incf EEADR,F ; advance to next EEPROM cell
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87 decfsz eeprom_loop,F ; decrement loop counter, all done?
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88 bra eeprom_read_common_loop ; NO - loop
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89 return ; YES - done
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90
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91 global eeprom_write_common
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92 eeprom_write_common:
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93 movwf eeprom_loop ; initialize loop counter
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94 eeprom_write_common_loop:
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95 movff POSTINC1,EEDATA ; copy byte from memory to EEPROM data register
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96 rcall write_eeprom ; execute write
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97 incf EEADR,F ; advance to next EEPROM cell
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98 decfsz eeprom_loop,F ; decrement loop counter, all done?
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99 bra eeprom_write_common_loop ; NO - loop
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100 return ; YES - done
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101
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102
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103 ;-----------------------------------------------------------------------------
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104 ; Read OSTC Serial Number
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105 ;
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106 global eeprom_serial_number_read
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107 eeprom_serial_number_read:
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108 EEPROM_II_READ eeprom_ostc_serial,mpr ; read serial number
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109 return ; done
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110
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111
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112 ;-----------------------------------------------------------------------------
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113 ; Read and Write Dive Number Offset
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114 ;
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115 global eeprom_log_offset_read
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116 eeprom_log_offset_read:
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117 EEPROM_II_READ eeprom_log_offset,mpr ; read log offset
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118 return ; done
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119
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120 global eeprom_log_offset_write
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121 eeprom_log_offset_write:
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122 EEPROM_II_WRITE mpr,eeprom_log_offset ; write log-offset
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123 return ; done
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124
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125
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126 ;-----------------------------------------------------------------------------
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127 ; Read and Write total Number of Dives
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128 ;
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129 global eeprom_total_dives_read
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130 eeprom_total_dives_read:
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131 EEPROM_II_READ eeprom_num_dives,mpr ; read total dives
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132 return ; done
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133
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134 global eeprom_total_dives_write
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135 eeprom_total_dives_write:
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136 EEPROM_II_WRITE mpr,eeprom_num_dives ; write total dives
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137 return ; done
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138
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139
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140 ;-----------------------------------------------------------------------------
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141 ; Read and Write the Battery Type and Gauge Reading
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142 ;
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143 global eeprom_battery_gauge_read
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144 eeprom_battery_gauge_read:
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145 ; retrieve battery gauge from EEPROM 0x07-0x0C
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146 bsf block_battery_gauge ; suspend ISR from accessing the battery gauge
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147 EEPROM_CC_READ eeprom_battery_type, battery_type ; 1 byte read from EEPROM
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148 EEPROM_RR_READ eeprom_battery_gauge,battery_gauge,.6 ; 6 byte read from EEPROM
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149 bcf block_battery_gauge ; allow ISR to access the battery gauge again
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150 return ; done
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151
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152 global eeprom_battery_gauge_write
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153 eeprom_battery_gauge_write:
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154 bsf block_battery_gauge ; suspend ISR from accessing the battery gauge
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155 EEPROM_CC_WRITE battery_type, eeprom_battery_type ; 1 byte write to EEPROM
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156 update_battery_gauge:
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157 EEPROM_RR_WRITE battery_gauge,eeprom_battery_gauge,.6 ; 6 byte write to EEPROM
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158 bcf block_battery_gauge ; allow ISR to access the battery gauge again
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159 return ; done
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160
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161
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162 ;-----------------------------------------------------------------------------
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634
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163 ; Memorize the Checksum of the Firmware in the update Storage
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164 ;
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165 global eeprom_memorize_fw_checksum
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166 eeprom_memorize_fw_checksum:
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167 EXT_FLASH_ADDR 0x3E000D ; address firmware ID at 0x3E000D
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168 FLASH_CW_READ_0x40 ; read firmware ID to WREG
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169 movff WREG,buffer+.5 ; append firmware ID to checksum
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170 EEPROM_RR_WRITE buffer,eeprom_fw_chksum_current,.6 ; do a 6 byte write to EEPROM
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171 return ; done
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172
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173
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174 ;-----------------------------------------------------------------------------
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175 ; Read and Write the Deco Status
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176 ;
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177 global eeprom_deco_data_read
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178 eeprom_deco_data_read:
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179
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180 btfsc RCON,POR ; was there a power outage?
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181 bra eeprom_deco_data_read_1 ; NO - RTC is up-to-date
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182
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183 EEPROM_RR_READ eeprom_deco_data_timestamp,rtc_latched_year,.6 ; 6 byte read from EEPROM
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184 call rtc_set_rtc ; recover RTC to last known time & date
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185
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186 eeprom_deco_data_read_1:
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187
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188 ; restore surface interval
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189 EEPROM_II_READ eeprom_deco_data_surfinterval,mpr ; 2 byte read from EEPROM
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190 SMOVII mpr,surface_interval_mins ; ISR-safe copy of surface interval
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191
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192 ; bank 3: restore desaturation status
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193 EEPROM_RR_READ eeprom_deco_data_bank3,0x300,.9 ; 9 byte read from EEPROM
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194
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195 ; bank 5: restore CNS
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196 EEPROM_RR_READ eeprom_deco_data_bank5,0x500,.4 ; 4 byte read from EEPROM
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197
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198 ; bank 7: restore tissue pressures
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199 EEPROM_RR_READ eeprom_deco_data_bank7,0x700,.128 ; 128 byte read from EEPROM
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200
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201 return ; done
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202
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203
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204 global eeprom_deco_data_write
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205 eeprom_deco_data_write:
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206
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207 ; invalidate current data in vault
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208 movlw DECO_DATA_INVALID_TOKEN ; deco data invalid token
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209 EEPROM_CC_WRITE WREG,eeprom_deco_data_validity ; 1 byte write to EEPROM
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210
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211 ; store vault version
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212 movlw eeprom_vault_version ; deco data format version
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213 EEPROM_CC_WRITE WREG,eeprom_deco_data_version ; 1 byte write to EEPROM
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214
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215 ; store date/time
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216 SMOVSS rtc_year,rtc_latched_year ; ISR-safe 6 byte copy of date and time
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217 EEPROM_RR_WRITE rtc_latched_year,eeprom_deco_data_timestamp,.6 ; 6 byte write to EEPROM
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218
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219 ; store surface interval
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220 SMOVII surface_interval_mins,mpr ; ISR-safe copy of surface interval
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221 EEPROM_II_WRITE mpr,eeprom_deco_data_surfinterval ; 2 byte write to EEPROM
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222
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223 ; bank 3: store desaturation status
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224 EEPROM_RR_WRITE 0x300,eeprom_deco_data_bank3,.9 ; 9 byte write to EEPROM
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225
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226 ; bank 5: store CNS
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227 EEPROM_RR_WRITE 0x500,eeprom_deco_data_bank5,.4 ; 4 byte write to EEPROM
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228
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229 ; bank 7: store tissue pressures
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230 EEPROM_RR_WRITE 0x700,eeprom_deco_data_bank7,.128 ; 128 byte write to EEPROM
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231
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232 ; indicate new valid data in vault
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233 movlw DECO_DATA_VALID_TOKEN ; deco data valid token
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234 EEPROM_CC_WRITE WREG,eeprom_deco_data_validity ; 1 byte write to EEPROM
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235
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236 return ; done
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237
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238
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239 ;=============================================================================
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240 rs232 CODE
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241 ;=============================================================================
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242
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243 ;-----------------------------------------------------------------------------
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244 ;
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245 ; RS232 Functions
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246 ;
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247 ;-----------------------------------------------------------------------------
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0
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248
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249
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250 ;-----------------------------------------------------------------------------
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251 ; Switch-On the IR/S8 Port
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252 ;
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253 global enable_ir_s8_analog
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254 enable_ir_s8_analog:
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255 ;initialize serial port2 (TRISG2)
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256 btfsc ext_input_s8_ana ; do we have an S8/analog input?
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257 bra enable_s8_analog ; YES - enable S8/analog input
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258 ;bra enable_ir ; NO - enable IR digital input
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0
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259
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634
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260 enable_ir:
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261 banksel BAUDCON2 ; select bank for IO register access
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262 movlw b'00100000' ; speed generator configuration: BRG16=0, inverted for IR
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263 movwf BAUDCON2 ; ...
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264 movlw b'00100000' ; TX configuration: BRGH=0, SYNC=0
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265 movwf TXSTA2 ; ...
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266 movlw .102 ; speed configuration: SPBRGH:SPBRG = .102 : 2403 BAUD @ 16 MHz
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267 movwf SPBRG2 ; ...
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268 clrf SPBRGH2 ; ...
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269 movlw b'10010000' ; RX configuration
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270 movwf RCSTA2 ; ...
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271 banksel common ; back to bank common
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272 bsf ir_power ; power-up IR
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273 btfss ir_power ; power-up confirmed?
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274 bra $-6 ; NO - loop and wait
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275 bsf PIE3,RC2IE ; enable RC2 INT
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276 return ; done
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277
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278 enable_s8_analog:
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279 banksel TXSTA2 ; select bank for IO register access
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280 clrf TXSTA2 ; reset UART 2 TX function
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281 clrf RCSTA2 ; reset UART 2 RX function
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282 banksel common ; back to bank common
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283
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284 bsf mcp_power ; power-up instrumentation amp (used by S8 and analog input)
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285 btfss mcp_power ; power-up completed?
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286 bra $-4 ; NO - loop
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113
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287
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634
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288 ; branch according to S8 / analog selection
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289 TSTOSS opt_s8_mode ; =0: analog, =1: digital RS232
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290 bra enable_analog ; -> analog
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291
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292 ; configure S8 digital interface
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293 bcf s8_npower ; power S8 HUD (inverted via P-MOS transistor)
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294 WAITMS d'30' ; NO - wait 30 ms
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295 banksel BAUDCON2 ; select bank for IO register access
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296 movlw b'00000000' ; speed generator configuration: BRG16=0, normal for S8
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297 movwf BAUDCON2 ; ...
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298 movlw b'00100000' ; TX configuration: BRGH=0, SYNC=0
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299 movwf TXSTA2 ; ...
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300 movlw .25 ; speed configuration: SPBRGH:SPBRG = .25 : 9615 BAUD @ 16 MHz
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301 movwf SPBRG2 ; ...
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302 movlw b'10010000' ; RX configuration
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303 movwf RCSTA2 ; ...
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304 banksel common ; back to bank common
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305 bsf PIE3,RC2IE ; enable RC2 INT
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306 return
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113
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307
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634
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308 enable_analog:
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309 ; S8 analog interface
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310 bcf PIE3,RC2IE ; disable RC2 INT
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311 bsf s8_npower ; power-down S8 digital interface
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312 return ; done
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313
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314
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634
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315 ;-----------------------------------------------------------------------------
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316 ; Shut-Down the IR/S8 Port
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317 ;
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318 global disable_ir_s8_analog
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319 disable_ir_s8_analog:
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320 banksel TXSTA2 ; select bank for IO register access
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634
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321 clrf TXSTA2 ; shut down TX function
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322 clrf RCSTA2 ; shut down RX function
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323 banksel common ; back to bank common
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324 bcf PIE3,RC2IE ; disable RC2 INT
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325 bcf ir_power ; power down IR receiver
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326 bcf mcp_power ; power-down instrumentation amp
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327 bsf s8_npower ; power-down S8 digital interface
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328 return ; done
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329
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330
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331 ;-----------------------------------------------------------------------------
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332 ; Send Byte in WREG via the IR/S8 Port
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333 ;
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334 global ir_s8_tx_single
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335 ir_s8_tx_single:
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336 banksel TXSTA2 ; UART 2 is outside of the access RAM
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337 movwf TXREG2 ; transmit byte
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338 ir_s8_tx_single_loop:
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339 btfss TXSTA2,TRMT ; TX completed?
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340 bra ir_s8_tx_single_loop ; NO - wait...
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341 banksel common ; YES - back to bank common
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342 return ; - done
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343
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634
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344
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631
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345 ;-----------------------------------------------------------------------------
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634
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346 ; Switch-On USB/BT Port
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347 ;
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0
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348 global enable_rs232
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349 enable_rs232:
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623
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350 call request_speed_normal ; request CPU speed change to normal speed
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351 enable_rs232_1:
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352 btfss speed_is_normal ; speed = normal?
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631
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353 bra enable_rs232_1 ; NO - loop waiting for ISR to have adjusted the speed
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640
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354 bsf TRISC,7
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631
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355 bcf PORTE,0 ; YES - switch port to comm
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356 bsf PORTJ,2 ; - /Reset (required for very old OSTC sport)
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357 movlw b'00100100' ; - TX configuration: TX enabled, async, high speed
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358 movwf TXSTA1 ; - ...
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359 movlw b'10010000' ; - RX configuration: port enabled, RX enabled
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360 movwf RCSTA1 ; - ...
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634
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361 IFNDEF _comm_debug
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362 movlw HIGH(.65536-rx_timeout*.32) ; - define TMR5H initialization value for RX timeout (rx_timeout defined in hwos.inc)
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363 ELSE
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364 include "math.inc"
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365 movff opt_comm_timeout,xA+0 ; - get timeout setting in multiples of 10 ms (opt_comm_timeout: 10 .. 200 x 10 ms)
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366 clrf xA+1 ; - ...
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367 MOVLI .320,xB ; - multiply with 10 to get timeout in ms and 32 because tmr5 ticks 32x per ms
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368 call mult16x16 ; - xC = xA * xB = timer ticks to go until timeout
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369 MOVII xC,sub_b ; - multiplication result is max. 64000
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370 MOVLI .65535,sub_a ; - timer wraps around after 65535
|
|
|
371 call subU16 ; - sub_c = sub_a - sub_b = start value for timer
|
|
|
372
|
|
|
373 movlw .244 ; safety maximum value for rx_timeout_tmr5h_load (minimum timeout interval)
|
|
|
374 cpfslt sub_c+1 ; result > safety value?
|
|
|
375 movwf sub_c+1 ; YES - revert to safety value
|
|
|
376
|
|
|
377 movf sub_c+1,W ; - keep only the upper byte as TMR5H initialization value for RX timeout
|
|
|
378 ENDIF
|
|
|
379 movwf rx_timeout_tmr5h_load ; - store for later use
|
|
631
|
380 return ; - done
|
|
0
|
381
|
|
582
|
382
|
|
634
|
383 ;-----------------------------------------------------------------------------
|
|
|
384 ; Shut-Down USB/BT Port
|
|
|
385 ;
|
|
0
|
386 global disable_rs232
|
|
|
387 disable_rs232:
|
|
631
|
388 clrf RCSTA1 ; disable RX
|
|
|
389 clrf TXSTA1 ; disable TX
|
|
|
390 bcf PORTC,6 ; switch TX pin hard to GND
|
|
634
|
391 bsf PORTE,0 ; power down BT chip
|
|
631
|
392 bcf PORTJ,2 ; /Reset (required for very old OSTC sport)
|
|
640
|
393 bcf TRISC,7
|
|
|
394 bcf PORTC,7 ; switch RX pin hard to GND
|
|
582
|
395 return
|
|
|
396
|
|
|
397
|
|
634
|
398 ;-----------------------------------------------------------------------------
|
|
|
399 ; Wait for last Byte to be sent out of USB/BT Port
|
|
|
400 ;
|
|
631
|
401 global rs232_wait_tx ; ++++ do not touch WREG here! ++++
|
|
|
402 rs232_wait_tx:
|
|
|
403 btfss TXSTA1,TRMT ; last byte completely shifted out on TX pin?
|
|
|
404 bra rs232_wait_tx ; NO - wait...
|
|
|
405 btfss ble_available ; YES - OSTC running with Bluetooth?
|
|
|
406 return ; NO - done
|
|
|
407 btfsc NRTS ; YES - Bluetooth module also completed TX?
|
|
|
408 bra rs232_wait_tx ; NO - wait...
|
|
|
409 return ; YES - done
|
|
623
|
410
|
|
|
411
|
|
634
|
412 ;-----------------------------------------------------------------------------
|
|
|
413 ; Receive one Byte via the USB/BT Port
|
|
|
414 ;
|
|
|
415 ; ++++ make this code as fast as possible! ++++
|
|
|
416 ; ++++ do not touch WREG here! ++++
|
|
|
417 ;
|
|
|
418 global serial_rx_single
|
|
|
419 serial_rx_single:
|
|
631
|
420 bcf rs232_rx_timeout ; clear timeout flag
|
|
634
|
421 btfsc PIR1,RCIF ; received a data byte? (bit is set on RX completion and reset on reading RCREG1)
|
|
|
422 return ; YES - done (fast path)
|
|
|
423 movff rx_timeout_tmr5h_load,TMR5H ; NO - load TMR5 high with timeout value
|
|
631
|
424 clrf TMR5L ; - load TMR5 low with a zero, writing low starts the timer
|
|
|
425 bcf PIR5,TMR5IF ; - clear timer overflow flag
|
|
634
|
426 serial_rx_single_loop:
|
|
631
|
427 btfsc PIR1,RCIF ; received a data byte?
|
|
634
|
428 return ; YES - done
|
|
631
|
429 btfss PIR5,TMR5IF ; NO - timer overflow (timeout)?
|
|
634
|
430 bra serial_rx_single_loop ; NO - continue waiting
|
|
|
431 ;bra serial_rx_timeout ; YES - timeout
|
|
623
|
432
|
|
582
|
433
|
|
631
|
434 ;-----------------------------------------------------------------------------
|
|
634
|
435 ; Helper Function: Timeout in serial_rx_single / serial_tx_steam
|
|
|
436 ;
|
|
|
437 serial_rx_timeout:
|
|
|
438 bsf rs232_rx_timeout ; set timeout flag
|
|
|
439 bcf RCSTA1,CREN ; clear receiver status: disable RX,
|
|
|
440 bsf RCSTA1,CREN ; ... enable again RX
|
|
|
441 return ; done
|
|
|
442
|
|
623
|
443
|
|
634
|
444 ;-----------------------------------------------------------------------------
|
|
|
445 ; Send and Receive Functions to be used via Macros
|
|
|
446 ;-----------------------------------------------------------------------------
|
|
|
447
|
|
|
448 ;-----------------------------------------------------------------------------
|
|
|
449 ; Send a Range of 1-256 Bytes from Memory via the USB/BT Port
|
|
631
|
450 ;
|
|
634
|
451 global serial_tx_steam
|
|
|
452 serial_tx_steam:
|
|
631
|
453 movwf eeprom_loop ; initialize loop counter (eeprom variable used here)
|
|
|
454 serial_tx_ram_loop:
|
|
|
455 rcall rs232_wait_tx ; wait for completion of last transmit
|
|
|
456 movff POSTINC2,TXREG1 ; send a byte from memory to serial
|
|
|
457 decfsz eeprom_loop,F ; decrement loop counter, became zero?
|
|
|
458 bra serial_tx_ram_loop ; NO - loop
|
|
|
459 return ; YES - done
|
|
582
|
460
|
|
623
|
461
|
|
634
|
462 ;-----------------------------------------------------------------------------
|
|
|
463 ; Receive a Range of 1-256 Byte via the USB/BT Port and write them to Memory
|
|
|
464 ; ++++ make this code as fast as possible! ++++
|
|
631
|
465 ;
|
|
634
|
466 global serial_rx_stream
|
|
|
467 serial_rx_stream:
|
|
631
|
468 movwf eeprom_loop ; initialize loop counter (eeprom variable used here)
|
|
634
|
469 serial_rx_stream_loop:
|
|
631
|
470 btfss PIR1,RCIF ; received a data byte? (bit is set on RX complete and reset on reading RCREG1)
|
|
634
|
471 bra serial_rx_stream_tmr ; NO - enter receive loop with timeout
|
|
|
472 ;bra serial_rx_stream_received ; YES - copy to memory, tick counter, ...
|
|
|
473
|
|
|
474 serial_rx_stream_received:
|
|
|
475 movff RCREG1,POSTINC2 ; copy received byte to memory
|
|
|
476 decfsz eeprom_loop,F ; decrement loop counter, became zero?
|
|
|
477 bra serial_rx_stream_loop ; NO - await next byte
|
|
|
478 bcf rs232_rx_timeout ; YES - clear timeout flag
|
|
|
479 return ; - all bytes received, done
|
|
|
480
|
|
|
481 serial_rx_stream_tmr:
|
|
|
482 movff rx_timeout_tmr5h_load,TMR5H ; load TMR5 high with timeout value
|
|
|
483 clrf TMR5L ; load TMR5 low with a zero, writing to low starts the timer
|
|
631
|
484 bcf PIR5,TMR5IF ; clear timer overflow flag
|
|
634
|
485 serial_rx_stream_tmr_loop:
|
|
|
486 btfsc PIR1,RCIF ; received a data byte? (bit is set on RX complete and reset on reading RCREG1)
|
|
|
487 bra serial_rx_stream_received ; YES - copy to memory, tick counter, ...
|
|
|
488 btfss PIR5,TMR5IF ; NO - timer overflow (timeout)?
|
|
|
489 bra serial_rx_stream_tmr_loop ; NO - continue waiting
|
|
|
490 bra serial_rx_timeout ; YES - timeout
|
|
623
|
491
|
|
631
|
492 ;-----------------------------------------------------------------------------
|
|
634
|
493
|
|
582
|
494 END
|
