Set The Desired Ci Charge Current For The Designated Charger; Charge Empty Battery In Constant Current With Target <Ci_Chgireg - Enfora Enabler LPP G Integration Manual

7.6.4. Set the desired CI charge current for the designated charger.

Determining the charge current for the constant-current charging stage now will make the
BCIMAP# <%> parameters more accurate. Typical limiting values are listed in the following
table:
Charger
USB charger
Wall charger
Triton-Lite
Customer charger
Note: <ci_chgireg> = [ 0.22 * (CI + ISYS) * 10 + 0 ] * 255 / 1750.
Max value is 255.
Determine the charger # and <ci_chgireg> for that charger.
Charger 1=BCICHG1 is dedicated for USB charging.
Chargers 2-5=BCICHG(2-5) are for any general purpose charger. Set with:
AT$BCICHG#=<type>,<ci_chgireg>,<ov_thr>,< id_low>,<id_high>
Reset or cycle charging with AT$BCIOFF to make new <ci_chgireg> take effect.
Example:
Suppose it is desired to have a USB charge at 100mA when it is the charging source and a
wall charger charge at 800mA when it is the charging source. The system nominal current
Isys=50mA.
<ci_chgireg1> = [ 0.22 * (100 + 50) * 10 + 0 ] * 255 / 1750 = 48
<ci_chgireg2> = [ 0.22 * (800 + 50) * 10 + 0 ] * 255 / 1750 = 272 => 255
AT$BCICHG1=<type>,48,<ov_thr>,< id_low>,<id_high>
AT$BCICHG2=<type>,255,<ov_thr>,< id_low>,<id_high>
7.6.5. Charge empty battery in constant current with target <ci_chgireg>.
Up to 5 different batteries can be independently defined with capacities using the BCIMAP#
and BCIPCT#.
1. Completely discharge the battery n that will be associated with the BCIMAPn and
BCIPCTn.
2. Plug in a charger.
3. When Vbat=3.2V, the Locosto powers on and the modem enumerates a port through
USB. Start logging a text file while the charge state is still precharge 1(PRE).
4. Type the following commands:
Command
AT$BCIDBG=2,0
AT$STOATEV=10,AT$BCIOFF=1
AT$STOATEV=11,AT$BCIDBG=2,0
AT$EVENT=10,0,85,6,6
AT$EVENT=10,3,44,10,0
AT$EVENT=10,3,44,11,0
5. Let the battery charge to the CI-CV transition and stop charging.
6. Stop the log file.
LPP0108IG001
Max. charge current
500mA
Limited by Triton-Lite
maximum
800mA
X
Detail
Start debug traces
Script to stop charging and report Vbat
when the CI-CV transition occurs.
Version - Preliminary – 06/20/08
43
<ci_chgireg> [0-255]
160
255
255
1
Calculate