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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>
date Mon, 19 Oct 2020 05:11:29 +0000
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1 State of blobs in FreeCalypso firmware
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2 ======================================
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3
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4 FC Tourmaline is almost completely deblobbed. Only the following very small
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5 components exist in the form of blobs (prebuilt binary objects for which we
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6 have no exact corresponding source) in the standard Tourmaline build:
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7
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8 * OSL and OSX glue components of GPF: 14992 bytes of code
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9 * TMS470 compiler's RTS library (libc/libgcc equivalent): 13152 bytes of code
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10
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11 For OSL and OSX we do have reconstructed C code written based on disassembly of
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12 the blobs, but I (Mother Mychaela) do not consider the current state of this C
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13 reconstruction to be fit for production use - hence standard Tourmaline fw
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14 builds use blob versions of these components. However, our configuration and
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15 build system gives you the freedom to select which version of each component
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16 you would rather use; the selection is made with Bourne shell config variables
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17 on the configure.sh invokation line:
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18
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19 OSL=0 use the blob version of OSL
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20 OSL=1 use the reconstructed C version of OSL
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21 OSX=0 use the blob version of OSX
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22 OSX=1 use the reconstructed C version of OSX
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23
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24 The current default is OSL=0 and OSX=0.
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25
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26 RTS library
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27 ===========
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28
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29 We do have source code for some versions of the TMS470 compiler's RTS library,
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30 but they may not be exactly corresponding to the blob version from TCS211 which
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31 we are using. This area is deemed to be such a low priority that no real
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32 investigation has been done yet.