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annotate src/adc_lightsensor.asm @ 196:a0e0ddfc1b49

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suppress ghost readings for long, open cables
author heinrichsweikamp
date Thu, 06 Nov 2014 12:00:44 +0100
parents e79bc535ef9e
children dcd513840c6c
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1 ;=============================================================================
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2 ;
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3 ; File adc.asm
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4 ;
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5 ;
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6 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved.
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7 ;=============================================================================
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8 ; HISTORY
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9 ; 2011-08-08 : [mH] moving from OSTC code
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10
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11 #include "ostc3.inc"
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12 #include "math.inc"
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13 #include "wait.inc"
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14 #include "eeprom_rs232.inc"
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15 #include "i2c.inc"
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16
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17 sensors CODE
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18
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19 wait_adc:
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20 movwf ADCON0
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21 nop
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22 bsf ADCON0,1 ; start ADC
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23 wait_adc2:
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24 btfsc ADCON0,1 ; Wait...
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25 bra wait_adc2
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26 return
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27
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28 global get_battery_voltage
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29 get_battery_voltage: ; starts ADC and waits until fnished
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30 btfss c3_hardware
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31 bra get_battery_voltage1 ; Normal ostc3 hardware
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32
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33 call lt2942_get_accumulated_charge
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34 call lt2942_get_voltage
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35 bcf LEDr
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36 bcf TRISJ,2 ; Chrg-Out output
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37 bsf CHRG_OUT
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38
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39 btfss CHRG_IN
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40 bra cc_active
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41
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42 bcf CHRG_OUT
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43 bsf TRISJ,2 ; Chrg-Out high impedance
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44
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45 WAITMS d'1'
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46
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47 btfsc CHRG_IN
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48 return
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49 ;cv_active:
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50 bsf LEDr ; Indicate charging
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51 call lt2942_charge_done ; Reset accumulating registers to 0xFFFF
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52 WAITMS d'10'
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53 bcf LEDr ; Indicate charging
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54 return
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55
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56 cc_active:
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57 bsf LEDr ; Indicate charging
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58 bcf CHRG_OUT
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59 bsf TRISJ,2 ; Chrg-Out high impedance
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60 return
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61
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62 get_battery_voltage1:
0
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63 bsf adc_running ; =1: The ADC is in use
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64 movlw b'00100000' ; 2.048V Vref+ -> 1LSB = 500µV
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65 movwf ADCON1
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66 movlw b'00011001' ; power on ADC, select AN6
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67 rcall wait_adc
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68
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69 movff ADRESH,batt_voltage+1 ; store value
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70 movff ADRESL,batt_voltage+0 ; store value
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71 bcf ADCON0,0 ; power off ADC
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72
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73 ; Multiply with 2,006 to be excact here...
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74 ; bcf STATUS,C
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75 ; rlcf xA+0,F
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76 ;
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77 ; rlcf xA+1,F ; x2
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78
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79 ; movff xA+0,batt_voltage+0 ; store value
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80 ; movff xA+1,batt_voltage+1
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81
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82 movlw LOW lithium_36v_low
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83 movwf sub_a+0
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84 movlw HIGH lithium_36v_low
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85 movwf sub_a+1
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86 movff batt_voltage+0,sub_b+0
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87 movff batt_voltage+1,sub_b+1
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88 call subU16 ; sub_c = sub_a - sub_b
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89 ; Battery is 3,6V (>lithium_36v_low?)
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90 btfss neg_flag
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91 bra get_battery_voltage4 ; No, use 1,5V
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92
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93 bsf battery_is_36v ; Yes, set flag (Cleared in power-on reset only!)
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94
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95 ; Check if the battery is near-dead already
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96 movlw LOW lithium_36v_empty
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97 movwf sub_a+0
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98 movlw HIGH lithium_36v_empty
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99 movwf sub_a+1
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100 call subU16 ; sub_c = sub_a - sub_b
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101 ; Battery is not dead yet (>lithium_36v_empty?)
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102 btfsc neg_flag
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103 bra get_battery_voltage2 ; Yes, battery is still ok
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104
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105 ; Battery is probably dead very soon
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106 ; Set ">=24Ah used" into battery gauge registers
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107 movlw .128
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108 movff WREG,battery_gauge+5
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109
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110 get_battery_voltage2:
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111 ; Use 3,6V battery gauging mode
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112 movff battery_gauge+5,xC+3
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113 movff battery_gauge+4,xC+2
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114 movff battery_gauge+3,xC+1
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115 movff battery_gauge+2,xC+0
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116 ; battery_gauge:6 is nAs
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117 ; devide through 65536
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118 ; devide through 364
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119 ; Result is in percent of a 2,4Ah Battery
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120 movlw LOW .364
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121 movwf xB+0
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122 movlw HIGH .364
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123 movwf xB+1
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124 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder
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125 movff xC+0,lo
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126 ; Limit to 100
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127 movlw .100
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128 cpfslt lo
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129 movwf lo
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130 ; lo will be between 0 (Full) and 100 (empty)
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131 movf lo,W
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132 sublw .100
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133 movwf lo
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134 get_battery_voltage3:
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135 movlw .100
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136 cpfslt lo
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137 movwf lo
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138 ; lo will be between 100 (Full) and 0 (empty)
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139
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140 ; use 3,6V battery sensing based on 50mA load
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141 ; 75%
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142 movff batt_voltage+0,sub_b+0
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143 movff batt_voltage+1,sub_b+1
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144 movlw LOW lithium_36v_75
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145 movwf sub_a+0
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146 movlw HIGH lithium_36v_75
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147 movwf sub_a+1
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148 call subU16 ; sub_c = sub_a - sub_b
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149 btfsc neg_flag
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150 bra get_battery_voltage3a
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151 movlw .75
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152 movwf lo
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153 get_battery_voltage3a:
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154 ; 50%
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155 movlw LOW lithium_36v_50
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156 movwf sub_a+0
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157 movlw HIGH lithium_36v_50
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158 movwf sub_a+1
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159 call subU16 ; sub_c = sub_a - sub_b
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160 btfsc neg_flag
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161 bra get_battery_voltage3b
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162 movlw .50
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163 movwf lo
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164 get_battery_voltage3b:
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165 ; 25%
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166 movlw LOW lithium_36v_25
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167 movwf sub_a+0
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168 movlw HIGH lithium_36v_25
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169 movwf sub_a+1
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170 call subU16 ; sub_c = sub_a - sub_b
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171 btfsc neg_flag
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172 bra get_battery_voltage3c
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173 movlw .25
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174 movwf lo
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175 get_battery_voltage3c:
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176 ; 10%
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177 movlw LOW lithium_36v_10
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178 movwf sub_a+0
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179 movlw HIGH lithium_36v_10
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180 movwf sub_a+1
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181 call subU16 ; sub_c = sub_a - sub_b
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182 btfsc neg_flag
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183 bra get_battery_voltage3d
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184 movlw .10
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185 movwf lo
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186 get_battery_voltage3d:
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18fe4e668baa BUGFIX: Percent display with 1,5V batteries
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187 movlw .100
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188 cpfslt lo
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189 movwf lo
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190 ; lo will be between 100 (Full) and 0 (empty)
0
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191 movf batt_percent,W
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192 cpfsgt lo ; keep batt_percent on the lowest value found
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193 movff lo,batt_percent ; store value
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194 ; btfsc battery_is_36v ; but always use computed value for 3,6V battery
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195 ; movff lo,batt_percent ; store value
0
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196 bcf adc_running ; =1: The ADC is in use
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197 return
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198
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199 get_battery_voltage4:
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200 ; Use 1,5V battery voltage mode
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201 ; Use approximation (batt_voltage:2-aa_15v_low)/4 = lo
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202 movff batt_voltage+0,sub_a+0
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203 movff batt_voltage+1,sub_a+1
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204 movlw LOW aa_15v_low
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205 movwf sub_b+0
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206 movlw HIGH aa_15v_low
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207 movwf sub_b+1
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208 call subU16 ; sub_c = sub_a - sub_b
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209 bcf STATUS,C
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210 rrcf sub_c+1
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211 rrcf sub_c+0 ; /2
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212 bcf STATUS,C
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213 rrcf sub_c+1
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214 rrcf sub_c+0 ; /4
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215 movff sub_c+0,lo
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216 bra get_battery_voltage3d ; Check limits and return
0
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217
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218 global get_ambient_level
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219 get_ambient_level: ; starts ADC and waits until finished
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220 btfsc adc_running ; ADC in use?
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221 return ; Yes, return
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222
113
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parents: 44
diff changeset
223 btfss c3_hardware
heinrichsweikamp
parents: 44
diff changeset
224 bra get_ambient_level1 ; Normal ostc3 hardware
heinrichsweikamp
parents: 44
diff changeset
225 movlw .250
heinrichsweikamp
parents: 44
diff changeset
226 movwf ambient_light+0
heinrichsweikamp
parents: 44
diff changeset
227 clrf ambient_light+1 ; Set to max
heinrichsweikamp
parents: 44
diff changeset
228 bra get_ambient_level2 ; Continue as normal
heinrichsweikamp
parents: 44
diff changeset
229
heinrichsweikamp
parents: 44
diff changeset
230 get_ambient_level1:
0
heinrichsweikamp
parents:
diff changeset
231 movlw b'00000000' ; Vref+ = Vdd
heinrichsweikamp
parents:
diff changeset
232 movwf ADCON1
heinrichsweikamp
parents:
diff changeset
233 movlw b'00011101' ; power on ADC, select AN7
heinrichsweikamp
parents:
diff changeset
234 rcall wait_adc
heinrichsweikamp
parents:
diff changeset
235
heinrichsweikamp
parents:
diff changeset
236 movff ADRESH,ambient_light+1
heinrichsweikamp
parents:
diff changeset
237 movff ADRESL,ambient_light+0
heinrichsweikamp
parents:
diff changeset
238 bcf ADCON0,0 ; power off ADC
heinrichsweikamp
parents:
diff changeset
239
heinrichsweikamp
parents:
diff changeset
240 ; ambient_light:2 is between 4096 (direct sunlight) and about 200 (darkness)
heinrichsweikamp
parents:
diff changeset
241 ; First: Devide through 16
heinrichsweikamp
parents:
diff changeset
242 bcf STATUS,C
heinrichsweikamp
parents:
diff changeset
243 rrcf ambient_light+1
heinrichsweikamp
parents:
diff changeset
244 rrcf ambient_light+0
heinrichsweikamp
parents:
diff changeset
245 bcf STATUS,C
heinrichsweikamp
parents:
diff changeset
246 rrcf ambient_light+1
heinrichsweikamp
parents:
diff changeset
247 rrcf ambient_light+0
heinrichsweikamp
parents:
diff changeset
248 bcf STATUS,C
heinrichsweikamp
parents:
diff changeset
249 rrcf ambient_light+1
heinrichsweikamp
parents:
diff changeset
250 rrcf ambient_light+0
heinrichsweikamp
parents:
diff changeset
251 bcf STATUS,C
heinrichsweikamp
parents:
diff changeset
252 rrcf ambient_light+1
heinrichsweikamp
parents:
diff changeset
253 rrcf ambient_light+0
heinrichsweikamp
parents:
diff changeset
254 ; Result: ambient_light:2/16
heinrichsweikamp
parents:
diff changeset
255 ; Now, make sure to have value between ambient_light_low and ambient_light_max
heinrichsweikamp
parents:
diff changeset
256
heinrichsweikamp
parents:
diff changeset
257 movlw .254
heinrichsweikamp
parents:
diff changeset
258 tstfsz ambient_light+1 ; >255?
heinrichsweikamp
parents:
diff changeset
259 movwf ambient_light+0 ; avoid ADC clipping
heinrichsweikamp
parents:
diff changeset
260
heinrichsweikamp
parents:
diff changeset
261 incfsz ambient_light+0,W ; =255?
heinrichsweikamp
parents:
diff changeset
262 bra get_ambient_level2 ; No, continue
heinrichsweikamp
parents:
diff changeset
263
heinrichsweikamp
parents:
diff changeset
264 movlw .254
heinrichsweikamp
parents:
diff changeset
265 movwf ambient_light+0 ; avoid ADC clipping
heinrichsweikamp
parents:
diff changeset
266
heinrichsweikamp
parents:
diff changeset
267 get_ambient_level2:
heinrichsweikamp
parents:
diff changeset
268 banksel isr_backup ; Back to Bank0 ISR data
heinrichsweikamp
parents:
diff changeset
269 movff opt_brightness,isr1_temp
heinrichsweikamp
parents:
diff changeset
270
heinrichsweikamp
parents:
diff changeset
271 btfsc RCSTA1,7 ; UART module on?
heinrichsweikamp
parents:
diff changeset
272 clrf isr1_temp ; Yes, set temporally to eco mode
heinrichsweikamp
parents:
diff changeset
273
heinrichsweikamp
parents:
diff changeset
274 incf isr1_temp,F ; adjust 0-2 to 1-3
heinrichsweikamp
parents:
diff changeset
275
heinrichsweikamp
parents:
diff changeset
276 banksel common ; flag is in bank1
136
9a637c9bb19a rename Deco Planner to Simulator
heinrichsweikamp
parents: 120
diff changeset
277 movlw ambient_light_max_high_c3; c3 hardware brightest setting
9a637c9bb19a rename Deco Planner to Simulator
heinrichsweikamp
parents: 120
diff changeset
278 btfss c3_hardware
9a637c9bb19a rename Deco Planner to Simulator
heinrichsweikamp
parents: 120
diff changeset
279 movlw ambient_light_max_high_15V; 1,5V battery brightest setting
9a637c9bb19a rename Deco Planner to Simulator
heinrichsweikamp
parents: 120
diff changeset
280 btfsc battery_is_36v ; 3,6V battery in use?
9a637c9bb19a rename Deco Planner to Simulator
heinrichsweikamp
parents: 120
diff changeset
281 movlw ambient_light_max_high_36V ; 3,6V battery brightest setting
0
heinrichsweikamp
parents:
diff changeset
282 banksel isr_backup ; Back to Bank0 ISR data
heinrichsweikamp
parents:
diff changeset
283
heinrichsweikamp
parents:
diff changeset
284 dcfsnz isr1_temp,F
heinrichsweikamp
parents:
diff changeset
285 movlw ambient_light_max_eco ; brightest setting
heinrichsweikamp
parents:
diff changeset
286 dcfsnz isr1_temp,F
heinrichsweikamp
parents:
diff changeset
287 movlw ambient_light_max_medium; brightest setting
heinrichsweikamp
parents:
diff changeset
288
heinrichsweikamp
parents:
diff changeset
289 banksel common ; ambient_light is in Bank1
heinrichsweikamp
parents:
diff changeset
290 incf ambient_light+0,F ; +1
heinrichsweikamp
parents:
diff changeset
291 cpfslt ambient_light+0 ; smaller then WREG?
heinrichsweikamp
parents:
diff changeset
292 movwf ambient_light+0 ; No, set to max.
heinrichsweikamp
parents:
diff changeset
293
heinrichsweikamp
parents:
diff changeset
294 banksel isr_backup ; Back to Bank0 ISR data
heinrichsweikamp
parents:
diff changeset
295 movff opt_brightness,isr1_temp
heinrichsweikamp
parents:
diff changeset
296 incf isr1_temp,F ; adjust 0-2 to 1-3
heinrichsweikamp
parents:
diff changeset
297 movlw ambient_light_min_high ; darkest setting
heinrichsweikamp
parents:
diff changeset
298
heinrichsweikamp
parents:
diff changeset
299 dcfsnz isr1_temp,F
heinrichsweikamp
parents:
diff changeset
300 movlw ambient_light_min_eco ; darkest setting
heinrichsweikamp
parents:
diff changeset
301 dcfsnz isr1_temp,F
heinrichsweikamp
parents:
diff changeset
302 movlw ambient_light_min_medium; darkest setting
heinrichsweikamp
parents:
diff changeset
303 dcfsnz isr1_temp,F
heinrichsweikamp
parents:
diff changeset
304 movlw ambient_light_min_high ; darkest setting
heinrichsweikamp
parents:
diff changeset
305
heinrichsweikamp
parents:
diff changeset
306 banksel common ; ambient_light is in Bank1
heinrichsweikamp
parents:
diff changeset
307 cpfsgt ambient_light+0 ; bigger then WREG?
heinrichsweikamp
parents:
diff changeset
308 movwf ambient_light+0 ; No, set to min
heinrichsweikamp
parents:
diff changeset
309
heinrichsweikamp
parents:
diff changeset
310 movff ambient_light+0,max_CCPR1L ; Store value for dimming in TMR7 interrupt
heinrichsweikamp
parents:
diff changeset
311 return
heinrichsweikamp
parents:
diff changeset
312
113
heinrichsweikamp
parents: 44
diff changeset
313 global get_analog_inputs
heinrichsweikamp
parents: 44
diff changeset
314 get_analog_inputs: ; starts ADC and waits until finished
0
heinrichsweikamp
parents:
diff changeset
315 bsf adc_running ; =1: The ADC is in use
113
heinrichsweikamp
parents: 44
diff changeset
316 btfsc TFT_PWM
heinrichsweikamp
parents: 44
diff changeset
317 bra get_analog_inputs ; Wait for PWM low
heinrichsweikamp
parents: 44
diff changeset
318 movlw b'00100000' ; 2.048V Vref+ -> 1LSB = 500µV
heinrichsweikamp
parents: 44
diff changeset
319 movwf ADCON1
heinrichsweikamp
parents: 44
diff changeset
320 movlw b'00100001' ; power on ADC, select AN8
heinrichsweikamp
parents: 44
diff changeset
321 rcall wait_adc
heinrichsweikamp
parents: 44
diff changeset
322 bcf STATUS,C
heinrichsweikamp
parents: 44
diff changeset
323 rrcf ADRESH,F ; /2
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
324 rrcf ADRESL,W
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
325 ; add to o2_mv_sensor1:2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
326 addwf o2_mv_sensor1+0,F
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
327 movf ADRESH,W
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
328 addwfc o2_mv_sensor1+1,F
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
329 ; Devide by 2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
330 bcf STATUS,C
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
331 rrcf o2_mv_sensor1+1,F ; /2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
332 rrcf o2_mv_sensor1+0,F
196
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
333
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
334 movlw HIGH ignore_mv
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
335 cpfsgt o2_mv_sensor1+1 ; >ignore_mv?
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
336 bra get_analog_inputs2a ; No
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
337 ; Yes, ignore this reading
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
338 clrf o2_mv_sensor1+1
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
339 clrf o2_mv_sensor1+0
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
340 get_analog_inputs2a:
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
341 ; Ignore 1,2mV noise for not-connected inputs
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
342 tstfsz o2_mv_sensor1+1 ; >25,5mV?
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
343 bra get_analog_inputs2 ; Yes, skip here
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
344 movlw .12
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
345 cpfsgt o2_mv_sensor1+0 ; >1,2mV?
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
346 clrf o2_mv_sensor1+0 ; no, clear result
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
347 get_analog_inputs2:
113
heinrichsweikamp
parents: 44
diff changeset
348 movlw b'00100101' ; power on ADC, select AN9
0
heinrichsweikamp
parents:
diff changeset
349 rcall wait_adc
113
heinrichsweikamp
parents: 44
diff changeset
350 bcf STATUS,C
heinrichsweikamp
parents: 44
diff changeset
351 rrcf ADRESH,F ; /2
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
352 rrcf ADRESL,W
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
353 ; add to o2_mv_sensor2:2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
354 addwf o2_mv_sensor2+0,F
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
355 movf ADRESH,W
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
356 addwfc o2_mv_sensor2+1,F
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
357 ; Devide by 2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
358 bcf STATUS,C
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
359 rrcf o2_mv_sensor2+1,F ; /2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
360 rrcf o2_mv_sensor2+0,F
196
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
361
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
362 movlw HIGH ignore_mv
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
363 cpfsgt o2_mv_sensor2+1 ; >ignore_mv?
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
364 bra get_analog_inputs3a ; No
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
365 ; Yes, ignore this reading
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
366 clrf o2_mv_sensor2+1
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
367 clrf o2_mv_sensor2+0
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
368 get_analog_inputs3a:
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
369 ; Ignore 1,2mV noise for not-connected inputs
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
370 tstfsz o2_mv_sensor2+1 ; >25,5mV?
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
371 bra get_analog_inputs3 ; Yes, skip here
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
372 movlw .12
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
373 cpfsgt o2_mv_sensor2+0 ; >1,2mV?
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
374 clrf o2_mv_sensor2+0 ; no, clear result
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
375 get_analog_inputs3:
113
heinrichsweikamp
parents: 44
diff changeset
376 movlw b'00101001' ; power on ADC, select AN10
heinrichsweikamp
parents: 44
diff changeset
377 rcall wait_adc
heinrichsweikamp
parents: 44
diff changeset
378 bcf STATUS,C
heinrichsweikamp
parents: 44
diff changeset
379 rrcf ADRESH,F ; /2
189
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
380 rrcf ADRESL,W
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
381 ; add to o2_mv_sensor3:2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
382 addwf o2_mv_sensor3+0,F
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
383 movf ADRESH,W
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
384 addwfc o2_mv_sensor3+1,F
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
385 ; Devide by 2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
386 bcf STATUS,C
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
387 rrcf o2_mv_sensor3+1,F ; /2
e79bc535ef9e ignore un-calibrated sensors even if they become valid
heinrichsweikamp
parents: 187
diff changeset
388 rrcf o2_mv_sensor3+0,F
196
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
389
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
390 movlw HIGH ignore_mv
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
391 cpfsgt o2_mv_sensor3+1 ; >ignore_mv?
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
392 bra get_analog_inputs4a ; No
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
393 ; Yes, ignore this reading
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
394 clrf o2_mv_sensor3+1
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
395 clrf o2_mv_sensor3+0
a0e0ddfc1b49 suppress ghost readings for long, open cables
heinrichsweikamp
parents: 189
diff changeset
396 get_analog_inputs4a:
187
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
397 ; Ignore 1,2mV noise for not-connected inputs
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
398 tstfsz o2_mv_sensor3+1 ; >25,5mV?
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
399 bra get_analog_inputs4 ; Yes, skip here
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
400 movlw .12
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
401 cpfsgt o2_mv_sensor3+0 ; >1,2mV?
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
402 clrf o2_mv_sensor3+0 ; no, clear result
669b5d00706d CHANGE: Longer timeout (4 min) for calibration menu
heinrichsweikamp
parents: 158
diff changeset
403 get_analog_inputs4:
0
heinrichsweikamp
parents:
diff changeset
404 bcf ADCON0,0 ; power off ADC
heinrichsweikamp
parents:
diff changeset
405 bcf adc_running ; =1: The ADC is in use
heinrichsweikamp
parents:
diff changeset
406 return
heinrichsweikamp
parents:
diff changeset
407
113
heinrichsweikamp
parents: 44
diff changeset
408 global piezo_config ; Sets up piezo sensitivity of heinrichs weikamp Piezo buttons (~30ms)
117
heinrichsweikamp
parents: 113
diff changeset
409 piezo_config: ; Settings between 20 and 200
158
683321c09cfa nicer boot into surfacemode
heinrichsweikamp
parents: 154
diff changeset
410 movlw .75 ; right button
117
heinrichsweikamp
parents: 113
diff changeset
411 rcall piezo_config_tx
158
683321c09cfa nicer boot into surfacemode
heinrichsweikamp
parents: 154
diff changeset
412 movlw .75 ; left button
117
heinrichsweikamp
parents: 113
diff changeset
413 rcall piezo_config_tx
heinrichsweikamp
parents: 113
diff changeset
414 movlw .200 ; reserved
heinrichsweikamp
parents: 113
diff changeset
415 rcall piezo_config_tx
heinrichsweikamp
parents: 113
diff changeset
416 movlw .200 ; reserved
heinrichsweikamp
parents: 113
diff changeset
417 rcall piezo_config_tx
113
heinrichsweikamp
parents: 44
diff changeset
418 return
heinrichsweikamp
parents: 44
diff changeset
419
117
heinrichsweikamp
parents: 113
diff changeset
420 piezo_config_tx: ; Send one byte
113
heinrichsweikamp
parents: 44
diff changeset
421 movwf uart1_temp ; Store byte
heinrichsweikamp
parents: 44
diff changeset
422 movlw .8
heinrichsweikamp
parents: 44
diff changeset
423 movwf uart2_temp ; Bit counter
heinrichsweikamp
parents: 44
diff changeset
424 bcf TX3_PIEZO_CFG ; Startbit
heinrichsweikamp
parents: 44
diff changeset
425 rcall piezo_config_wait_bit
heinrichsweikamp
parents: 44
diff changeset
426 piezo_config_tx_loop:
heinrichsweikamp
parents: 44
diff changeset
427 btfss uart1_temp,0 ; LSB first
heinrichsweikamp
parents: 44
diff changeset
428 bcf TX3_PIEZO_CFG
heinrichsweikamp
parents: 44
diff changeset
429 btfsc uart1_temp,0 ; LSB first
heinrichsweikamp
parents: 44
diff changeset
430 bsf TX3_PIEZO_CFG
heinrichsweikamp
parents: 44
diff changeset
431 rcall piezo_config_wait_bit
heinrichsweikamp
parents: 44
diff changeset
432 rrncf uart1_temp,F
heinrichsweikamp
parents: 44
diff changeset
433 decfsz uart2_temp,F
heinrichsweikamp
parents: 44
diff changeset
434 bra piezo_config_tx_loop
heinrichsweikamp
parents: 44
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435 bsf TX3_PIEZO_CFG ; Stopbit
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436 rcall piezo_config_wait_bit
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437 return
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438
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439 piezo_config_wait_bit:
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440 setf TMR5H
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441 movlw .255-.26 ;26 x 31,5µs = 819us
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442 movwf TMR5L
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443 bcf PIR5,TMR5IF ; Clear flag
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444 piezo_config_wait_bit3:
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445 btfss PIR5,TMR5IF
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446 bra piezo_config_wait_bit3 ; Wait loop
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447 return
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448
0
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449 global reset_battery_pointer
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450 reset_battery_pointer: ; Resets battery pointer 0x07-0x0C and battery_gauge:5
113
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451 extern lt2942_charge_done
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452 call lt2942_charge_done ; Reset accumulating registers to 0xFFFF
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453 clrf EEADRH
0
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454 clrf EEDATA ; Delete to zero
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455 write_int_eeprom 0x07
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456 write_int_eeprom 0x08
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parents:
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457 write_int_eeprom 0x09
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458 write_int_eeprom 0x0A
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459 write_int_eeprom 0x0B
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parents:
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460 write_int_eeprom 0x0C
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parents:
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461 banksel battery_gauge+0
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parents:
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462 clrf battery_gauge+0
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parents:
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463 clrf battery_gauge+1
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parents:
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464 clrf battery_gauge+2
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parents:
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465 clrf battery_gauge+3
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parents:
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466 clrf battery_gauge+4
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parents:
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467 clrf battery_gauge+5
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parents:
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468 banksel common
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parents:
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469 movlw .100
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470 movwf batt_percent
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parents:
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471 return
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parents:
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472
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parents:
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473
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474 END