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annotate src/eeprom_rs232.asm @ 340:1c4ff889fcf0

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author heinrichsweikamp
date Fri, 03 Jul 2015 15:46:56 +0200
parents e4cb495aed3d
children 1e342e433839
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1 ;=============================================================================
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2 ;
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3 ; File eeprom_rs232.asm
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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
275
653a3ab08062 rename into hwOS
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12 #include "hwos.inc"
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13 #include "wait.inc"
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14
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15 ;=============================================================================
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16 eeprom code 0xF00000+0x10
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17 ; Skip SERIAL number. Should not be overwritten.
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18 global eeprom_serial_save, eeprom_opt_backup
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19 eeprom_serial_save res 2
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20 eeprom_opt_backup res 0x3E
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21
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22 ;=============================================================================
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23 basic CODE
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24
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25 global write_int_eeprom_1
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26 write_int_eeprom_1:
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27 movwf EEADR
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28 bra write_eeprom ; writes and "returns" after write
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29
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30 global read_int_eeprom_1
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31 read_int_eeprom_1:
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32 movwf EEADR
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33 bra read_eeprom ; reads and "returns" after write
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34
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35 ;=============================================================================
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36 ; reads from internal eeprom
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37 ; Input: EEADRH:EEADR = EEPROM address.
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38 ; Output: EEDATA.
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39 ; Trashed: NONE.
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40 global read_eeprom
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41 read_eeprom:
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42 bcf EECON1,EEPGD
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43 bcf EECON1,CFGS
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44 bsf EECON1,RD
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45 return
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46
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47 ;=============================================================================
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48 ; writes into internal eeprom
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49 ; Input: EEADRH:EEADR = EEPROM address.
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50 ; EEDATA = byte to write.
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51 ; Trashed: WREG.
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52 global write_eeprom
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53 write_eeprom:
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54 bcf EECON1,EEPGD
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55 bcf EECON1,CFGS
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56 bsf EECON1,WREN
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57
133
939f1e83c4c2 BUGFIX: Surface interval was not displayed correctly in some cases
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58 bcf INTCON,GIE ; Disable interrups for the next 5 instructions
0
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59 movlw 0x55
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60 movwf EECON2
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61 movlw 0xAA
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62 movwf EECON2
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63 bsf EECON1,WR
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64 bsf INTCON,GIE ; ...but the flag for the ISR routines were still set, so they will interrupt now!
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65
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66 write_eep2:
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67 btfsc EECON1,WR
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68 bra write_eep2 ; wait about 4ms...
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69 bcf EECON1,WREN
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70 return
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71
224
5a4801918be9 temporally disable "Copy disable flags from digital input" routine
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72 global disable_ir_s8
5a4801918be9 temporally disable "Copy disable flags from digital input" routine
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73 disable_ir_s8:
0
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74 banksel TXSTA2
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75 clrf TXSTA2
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76 clrf RCSTA2
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77 banksel common
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78 bcf ir_power ; IR off
113
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79 bcf mcp_power ; Power-down intrumentation amp
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80 bsf s8_npower ; Power-down S8 HUD
0
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81 return
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82
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
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83 global enable_ir_s8
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
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84 enable_ir_s8:
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85 ;init serial port2 (TRISG2)
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e2ea74646127 configure hardware_flag byte
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86 btfsc analog_o2_input
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87 bra enable_s8 ; Start S8
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88
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89 banksel BAUDCON2
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90 movlw b'00100000' ; BRG16=0 ; inverted for IR
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91 movwf BAUDCON2
0
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92 movlw b'00100000' ; BRGH=0, SYNC=0
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93 movwf TXSTA2
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94 movlw .102 ; SPBRGH:SPBRG = .102 : 2403 BAUD @ 16MHz
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95 movwf SPBRG2
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96 movlw b'10010000'
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97 movwf RCSTA2
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98 banksel common
113
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99 bsf ir_power ; Power-up IR
0
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100 btfss ir_power
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101 bra $-6
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102 return
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103
113
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104 enable_s8:
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105 ; Check for Digital/Analog
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106 bsf s8_npower ; Power-down S8 HUD
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107 WAITMS d'1' ; Very short delay
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108 bsf mcp_power ; Power-up intrumentation amp
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109 btfss mcp_power
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110 bra $-6
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111 banksel TXSTA2
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112 clrf TXSTA2
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113 clrf RCSTA2
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114 banksel common
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115
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116 ; It may be digital, check for voltage when isolator is powered
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117 bcf s8_npower ; Power S8 HUD
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118 WAITMS d'1' ; Very short delay
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119
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120 btfsc PORTG,2 ; RX2=1?
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121 bra enable_s8_2 ; Yes, digital
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122 WAITMS d'30'
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123 btfsc PORTG,2 ; RX2=1?
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124 bra enable_s8_2 ; Yes, digital
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125
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126 ; Not found, set to analog (fail-safe)
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127
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128 enable_s8_analog:
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129 ; S8 Analog
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130 bsf s8_npower ; Power-down S8 HUD
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131 bcf s8_digital ; Clear flag
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132 return
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133
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134 enable_s8_2: ; S8 Digital
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135 banksel BAUDCON2
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136 movlw b'00000000' ; BRG16=0 ; normal for S8
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137 movwf BAUDCON2
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138 movlw b'00100000' ; BRGH=0, SYNC=0
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139 movwf TXSTA2
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140 movlw .25 ; SPBRGH:SPBRG = .25 : 9615 BAUD @ 16MHz
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141 movwf SPBRG2
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142 movlw b'10010000'
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143 movwf RCSTA2
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144 banksel common
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145 bsf s8_digital ; Set flag
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146 return
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147
0
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148 ;=============================================================================
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149 global enable_rs232
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150 enable_rs232:
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151 call speed_normal ; 16MHz
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152 enable_rs232_2:
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153 movlw T2CON_NORMAL
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154 cpfseq T2CON
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155 bra enable_rs232_2 ; Wait until speed is normal
218
8fbd8c5ac51f 1.71beta start
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156 bcf PORTE,0 ; Start comms
0
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157 ;init serial port1 (TRISC6/7)
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158 movlw b'00100100' ; BRGH=1, SYNC=0
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159 movwf TXSTA1
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160 movlw b'10010000'
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161 movwf RCSTA1
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162 return
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163
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164 global disable_rs232
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165 disable_rs232:
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166 clrf RCSTA1
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167 clrf TXSTA1 ; UART disable
198
c511dc403d7e (Slightly) reduce current consumption in Eco and sleep mode
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168 bcf PORTC,6 ; TX hard to GND
218
8fbd8c5ac51f 1.71beta start
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169 bsf PORTE,0 ; Stop comms
0
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170 return
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171
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172 global rs232_wait_tx
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173 rs232_wait_tx:
113
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174 btfss TXSTA1,TRMT ; RS232 Busy?
0
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175 bra rs232_wait_tx ; yes, wait...
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176 return ; Done.
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177
113
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178 global rs232_wait_tx2
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179 rs232_wait_tx2:
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180 banksel TXSTA2
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56276a2418f9 cleanup
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181 rs232_wait_tx2_1:
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182 btfss TXSTA2,TRMT ; RS232 Busy?
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56276a2418f9 cleanup
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183 bra rs232_wait_tx2_1 ; yes, wait...
113
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184 banksel common
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185 return ; Done.
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186
0
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187 global rs232_get_byte
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188 rs232_get_byte:
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189 bcf rs232_recieve_overflow ; clear flag
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190 clrf uart1_temp
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191 clrf uart2_temp
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192 rs232_get_byte2:
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193 btfsc PIR1,RCIF ; data arrived?
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194 return
276
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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195 btfsc PIR1,RCIF ; data arrived?
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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196 return
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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197 btfsc PIR1,RCIF ; data arrived?
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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198 return
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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199 btfsc PIR1,RCIF ; data arrived?
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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200 return
0
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201 decfsz uart2_temp,F
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202 bra rs232_get_byte2
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203 decfsz uart1_temp,F
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204 bra rs232_get_byte2
276
e4cb495aed3d Increase byte timeout in PC download mode, faster response to "Exit" in main menu
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205 ; timeout occoured (about 40ms)
0
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206 bsf rs232_recieve_overflow ; set flag
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207 bcf RCSTA1,CREN ; Clear receiver status
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208 bsf RCSTA1,CREN
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209 return ; and return anyway
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210
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211 END