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diff src/i2c.asm @ 556:dd28d4efd4d2

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fix a potential issue in the battery managment
author heinrichsweikamp
date Thu, 07 Dec 2017 09:58:40 +0100
parents e8351dd7bb90
children b7eb98dbd800
line wrap: on
line diff
--- a/src/i2c.asm	Thu Nov 23 12:52:36 2017 +0100
+++ b/src/i2c.asm	Thu Dec 07 09:58:40 2017 +0100
@@ -638,6 +638,21 @@
 	rcall		WaitMSSP
     return
 
+lt2942_init_again:
+	clrf	i2c_temp
+	movlw	0x02                ; Point to accumulated charge registers
+	rcall	I2C_TX_GAUGE
+	movff	battery_acumulated_charge+1,SSP1BUF       ; Data Byte
+	rcall	WaitMSSP
+	rcall	I2C_WaitforACK
+	movff	battery_acumulated_charge+0,SSP1BUF       ; Data Byte
+	rcall	WaitMSSP
+	rcall	I2C_WaitforACK
+	bsf	SSP1CON2,PEN		; Stop condition
+	rcall	WaitMSSP; (and return)
+	movff	battery_acumulated_charge+1,sub_a+1
+	movff	battery_acumulated_charge+0,sub_a+0
+	; and init again...
     global  lt2942_init
 lt2942_init:                    ; Setup Control register B
 	clrf	i2c_temp
@@ -787,7 +802,7 @@
 	
 	movff	gauge_status_byte,sub_b+0   ; copy into bank common
 	btfsc	sub_b+0,0		    ; =1: UVLO Event
-	rcall	lt2942_init
+	rcall	lt2942_init_again
 
 	movff	sub_a+1,battery_acumulated_charge+1 ; Save raw value
 	movff	sub_a+0,battery_acumulated_charge+0 ; Save raw value