FreeCalypso > hg > fc-tourmaline
annotate doc/Modem-operation @ 51:04aaa5622fa7
disable deep sleep when Iota LEDB is on
TI's Iota chip docs say that CLK13M must be running in order for
LEDB to work, and practical experience on Mot C139 which uses
Iota LEDB for its keypad backlight concurs: if Calypso enters
deep sleep while the keypad backlight is turned on, the light
flickers visibly as the chipset goes into and out of deep sleep.
TI's original L1 sleep manager code had logic to disable deep sleep
when LT_Status() returns nonzero, but that function only works
for B-Sample and C-Sample LT, always returns 0 on BOARD 41 - no
check of Iota LEDB status anywhere. Change this code for our
current hardware: disable deep sleep when Iota LEDB has been
turned on through LLS.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 19 Oct 2020 05:11:29 +0000 |
parents | a62e5bf88434 |
children |
rev | line source |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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1 FC Tourmaline stdmodem functional configuration is equivalent to Magnetite |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
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2 hybrid. The only intentional diff from Magnetite to Tourmaline in the modem |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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3 configuration is the change of Nucleus: Magnetite uses the blob version of |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
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4 Nucleus which came with TCS211-20070608, whereas Tourmaline uses the source |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
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changeset
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5 version of Nucleus by Comrade XVilka. It is essentially a change from an |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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6 unknown version of Nucleus to a known one, thus it should generally be |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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7 considered an improvement - but as always with such changes, extensive |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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8 verification and testing needs to be done in order to ensure that nothing got |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
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9 broken. |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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10 |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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11 Aside from the one intentional change of Nucleus version, FC Tourmaline is an |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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12 entirely new firmware source tree, thus it is always possible that something |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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13 could have got broken unintentionally, particularly in rarely-tested areas of |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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14 the firmware. Therefore, extensive testing will need to be done before we can |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
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15 declare Tourmaline stdmodem as officially replacing Magnetite hybrid for stable |
a62e5bf88434
first round of documentation
Mychaela Falconia <falcon@freecalypso.org>
parents:
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16 modem products. |