FreeCalypso > hg > freecalypso-tools
view ringtools/examples/ring.pwt @ 965:2969032bdfac
fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing
The only 100% safe way to pass a NULL pointer as a function argument
in K&R C is to cast 0 to a pointer type; failing to do so may cause
mysterious bugs (invalid stack frames or garbage in argument registers)
on 64-bit machines. This issue has already been fixed in most of
FC host tools, but I just found some missed spots: passing of NULL UDH
to PDU encoding functions in fcup-smsend[mult] in the case of single
(not concatenated) SMS.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Fri, 01 Sep 2023 07:33:51 +0000 |
| parents | 74331b35b1da |
| children |
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# The most basic ringtone included in TI's TCS211 delivery was apparently # intended to consist of alternating 800 Hz and 900 Hz tones, although # the actual output was a continuous 99 Hz tone as a result of interface # mismatch between the BZ_Tone() driver function and the tone generation # tables. # # In 2016 we made FC Magnetite emit actual 800 Hz and 900 Hz tones, # or rather the closest approximations to these two frequencies that # can be produced in BU mode - see ring.buz example. In 2021 we are # looking into the possibility of switching from BU mode to PWT mode; # the present melody file is a test of how the closest PWT counterpart # to 800/900 Hz would sound. g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12 g5 64 12 a5 64 12