Mercurial > public > hwos_code

comparison src/i2c.asm @ 618:7b3903536213

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
work on new battery menu
author heinrichsweikamp
date Mon, 04 Feb 2019 22:57:24 +0100
parents 935e20e16dff
children cd986267a5ca
comparison
equal deleted inserted replaced
617:08b28118c46b 618:7b3903536213
870 movwf xB+0 870 movwf xB+0
871 movlw HIGH .6000 871 movlw HIGH .6000
872 movwf xB+1 872 movwf xB+1
873 call mult16x16 ; xA*xB=xC 873 call mult16x16 ; xA*xB=xC
874 874
875 ; divide xC (32bit)/65535 for result in mV (16bit) 875 ; xC+3:xC+2 -> Result in mV
876 movlw .16
877 movwf i2c_temp1
878 lt2942_get_voltage2:
879 bcf STATUS,C
880 rrcf xC+3,F
881 rrcf xC+2,F
882 rrcf xC+1,F
883 rrcf xC+0,F
884 decfsz i2c_temp1,F
885 bra lt2942_get_voltage2
886 876
887 ; Update battery voltage in mV 877 ; Update battery voltage in mV
888 movff xC+1,batt_voltage+1 878 movff xC+3,batt_voltage+1
889 movff xC+0,batt_voltage+0 879 movff xC+2,batt_voltage+0
890 880
891 tstfsz batt_voltage+1 ; <256mV? 881 tstfsz batt_voltage+1 ; <256mV?
892 return ; No, done. 882 return ; No, done.
893 bra lt2942_init ;(and return) 883 bra lt2942_init ;(and return)
894 884
913 movwf xB+0 903 movwf xB+0
914 movlw HIGH .6000 904 movlw HIGH .6000
915 movwf xB+1 905 movwf xB+1
916 call mult16x16 ;xA*xB=xC 906 call mult16x16 ;xA*xB=xC
917 907
918 ; devide xC (32bit)/65535 for result in 0.1K (16bit) 908 ; xC+3:xC+2 -> Result in 0.1K
919 movlw .16
920 movwf i2c_temp1
921 lt2942_get_temperature2:
922 bcf STATUS,C
923 rrcf xC+3,F
924 rrcf xC+2,F
925 rrcf xC+1,F ; Result in 0.1K
926 rrcf xC+0,F ; Result in 0.1K
927 decfsz i2c_temp1,F
928 bra lt2942_get_temperature2
929 909
930 movlw LOW max_allowed_battery_temp ; in 0.1K 910 movlw LOW max_allowed_battery_temp ; in 0.1K
931 movwf sub_a+0 911 movwf sub_a+0
932 movlw HIGH max_allowed_battery_temp 912 movlw HIGH max_allowed_battery_temp
933 movwf sub_a+1 913 movwf sub_a+1
934 movff xC+1,sub_b+1 914 movff xC+3,sub_b+1
935 movff xC+0,sub_b+0 915 movff xC+2,sub_b+0
936 call subU16 ; sub_c = sub_a - sub_b (with UNSIGNED values) 916 call subU16 ; sub_c = sub_a - sub_b (with UNSIGNED values)
937 btfss neg_flag 917 btfss neg_flag
938 return ; temp ok, return 918 return ; temp ok, return
939 ; too hot, disable charge if currently charging 919 ; too hot, disable charge if currently charging
940 btfss cc_active 920 btfss cc_active