Hello,
BRT_AN_033_BT81X_Series_Programming_Guide.pdf has been updated to version 2.1 early in june.
Not fixed:
The struct xfont on page 101 is still missing members.
New issues:
Code Snippet 8 is using the wrong quotation marks for single characters and the comment say "21hou" instead of "ASCII" now.
Looks like all single quotes have been replaced with apostrophs.
Table 24: paletted -> 100houwu100
Examples on page 106: three entries smaller and "Temp %d%.1d degrees", t / 10,t % 10 -> “"Temp %d%.1d degree”", t / 10, t % 10
Page 126: '\0' -> ‘'\’'
Page 129: No backgound: -> No129houwu129t129dd:
Page 146: radius -> radI
Page 146: outer -> out‘r
Page 154: Code Snippet Error! Unknown switch argument. - CMD_GETPTR Command Example
Page 160: cmd_text(80, 30, 27, OPT_CENTER, "Please tap on the dot"); -> cmd_text(600, 140, 31, OPT_C“NTER, "Please tap on ”he dot");
Page 161: Parameters -> Params
Page 161: spinner -> spr
Page 168: TRACKER -> T–ACKER
Page 168: tracker -> t–acker - 2 times
Page 168: gauges and dials -> gauges and–dials
Page 168: scrollbars -> scro–lbars
Page 178: section -> s–ction - 3 times
Page 180: may render "stale" data -> may “ender”"stale" data
Page 180: fault ("display list must be empty") -> “ault ("display list must b” empty")
Page 200: Branch Office -> Branch –ffice
And yes of course, while I spotted a few of these myself, I used an online .pdf diff tool.
I also noted a number of changes that are not mentioned in the revision history and which I like, for example the more
consistent use of lower-case names for parameters.
Edit:
Annother issue that did not come up in the diff since it remained unchanged, table 12 is partly listing the ASTC formats
with the incorrect "Bits per pixel" values.
COMPRESSED_RGBA_ASTC_8x8_KHR has 2.00 and not 2.56
COMPRESSED_RGBA_ASTC_10x5_KHR has 2.56 and not 2.13
COMPRESSED_RGBA_ASTC_10x6_KHR has 2.13 and not 2.00
See
https://en.wikipedia.org/wiki/Adaptive_scalable_texture_compressionEdit:
In the examples the presented API is not consistent used.
Probably the best example for this is on page 170.
The first two example use:
dl( TAG(1) );
And the third and fourth example use:
cmd(TAG(33));
cmd(TAG(34));
Sure, there is "Table 1" on page 12 which explains the functions:
cmd() write 32 bits data to command FIFO i.e. RAM_CMD
dl() Write 32 bits display list command to RAM_DL.
And even this table is inconsistent, the first explanation also looks like a complete sentence but
does not start with a capital letter and does not end with a punctuation.
However, it is not clear from the example snippets in which context these are used.
And then back to page 170, the first two examples have a number of dl() lines
and then a cmd_track() at the end.
These examples show a sequence of functions now that is not working when executed exactly like this.
Please restructure this at least in a way that makes it clear that all the dl() lines and the cmd_track() line are supposed to be executed in different parts of the program.
