He104man-v8 manual – Tri-M Systems HE104 User Manual
Page 29
23 June 2005
HE104MAN-V8 Manual
Tri-M Engineering
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1407 Kebet Way, Unit 100
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Canada
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‘D1 = 0, D0 = 0 channel 0 input, pin3 of connector CN3
‘D1 = 0, D0 = 1 channel 1 input, pin4 of connector CN3
‘1. on max cell voltage
‘2. on time
‘3. –ve delta V
‘4. cell temperature
next TCnt
let D1 = 0
let D0 = 0
gosub Convert
‘Get battery charging voltage
let Batt_V =AD
‘debud “charge”
if AD> BattV_Max then Batt_Chrg_Term
Chrg_Time = Chrg_Time + 1 ‘Detected negative deltaV in battery pack **Insert battery pack temperature code here** ‘Continue until charging terminated ‘turn off charge current Let Bat1_Chrg = 1 ‘Indicate battery has been charged Goto Main_Batt1 ‘ Deactivate the ADC to begin High CLK ‘ Clock data on rising edge, so start with CLK high High Dio ‘next bit of command Pulseout CLK.2
If Chrg_Time > Chrg_Time_Max then Batt_Chrg_Term ‘Used maximum charge time
If AD < Batt_Peak then Batt_DeltaV
Let AD =AD +Neg_DeltaV
If AD
goto Chrg_Lp
Batt_Chrg_Term:
PWM Chrg_ Limit, 0.50
Convert:
ADC Interface Pins
-The LTC 1594 uses a four-pin interface, consisting of chip-select, clock data input and data output.
In this application, we tie the data lines together and connect to the PM104 pin designated DIO.
Here’s where the conversion occurs. The PM104 first sends the setup bits to the LTC1594, then
clocks in two bits followed by (sample time), one null bit (a dummy bit that always reads 0, followed
by the conversion data.
High CS1
Pulsout CLK.2
Low DIO
Pulsout CLK.2
Let DIOp = D1