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nuttx/include/nuttx
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William Byatt a6b45dd471 video/rgbcolors: Fix RGBTO8 to use the high bits of each component. 
RGBTO8 shifted each component up before masking:

    (((uint8_t)(r) << 5) & 0xe0)

The cast is promoted to int before the shift, so the mask keeps bits 5:7
of the shifted value, which are bits 0:2 of r.  The macro therefore
encoded the three least significant bits of red and green and the two
least significant bits of blue, rather than the most significant.

This disagrees with RGBTO16 in the same file, which correctly takes the
high bits, and with RGB8RED/RGB8GREEN/RGB8BLUE immediately below it,
which are documented as the inverse transformation but read the result
as high bits.

All in-tree callers pass full 8-bit components, so all were affected:
RGBTO8(39, 64, 139) in apps/examples/nxterm, intended as midnight blue,
evaluates to 0xe3 -- full red plus full blue, i.e. magenta.

Take the high bits instead, so that RGBTO8 matches RGBTO16 and the
RGB8xxx macros become its true inverse.

Tested on a RISC-V LiteX/VexRiscv target with an 8bpp RGB332 frame
buffer, and with a host round-trip check over all 256 representable
colours.

Assisted-by: Claude:claude-opus-5
Signed-off-by: William Byatt <william@byatt.io>
2026-08-10 22:43:20 +08:00
..
1wire 1wire DS2XXX: add 1wire and DS2XXX documentation 2025-10-11 07:39:01 -03:00
aie
analog !arm/stm32l4: standardize public API/type prefix to stm32_ 2026-06-23 09:45:36 +08:00
audio drivers/audio/i2s: Fix unsigned integers in function signatures 2026-07-06 19:57:13 +08:00
binfmt binfmt: Add a configuration flag to store the module filename 2025-11-01 22:59:47 +08:00
can sja1000: replace enter_critical_section with spinlock 2026-01-08 09:15:04 -03:00
clk drivers/clk: use uintptr_t for register addresses 2026-06-23 09:46:33 +08:00
contactless
coresight style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
crypto drivers/crypto: add Microchip RNG90 driver 2026-08-03 17:23:22 +08:00
dma
drivers serial/uart_rpmsg: add _raw version of driver 2026-02-23 09:19:57 -03:00
eeprom mtd/at25ee: Use eeprom/spi_xx25xx internally 2025-12-17 19:03:54 +01:00
efuse
fs libs/libc: Fix divide-by-zero in stat() with large filesystem block sizes 2026-08-03 20:58:39 +08:00
himem
hwspinlock
i2c drivers/i2c: add ioexpander-based lower-half implementation for I2C bit-bang 2026-01-01 17:08:47 +08:00
i3c style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
input drivers/input: partial fix of indistinguishable ASCII and special keycodes 2026-08-04 09:33:53 +08:00
ioexpander ioexpander/iso1i813t: add option to check errors during read 2026-03-18 15:00:48 -03:00
lcd style: Fix "the the" typo across the codebase. 2026-03-23 11:07:49 +01:00
leds !drivers/pwm: remove PWM_MULTICHAN option 2026-05-18 11:35:25 -04:00
lib lib/math32: Avoid __uint128_t casts for LDC ImportC 2026-08-03 22:20:43 +08:00
math drivers/math: use small lock to replace enter_critical_section 2026-01-08 11:17:17 +08:00
mbox
mm protect: move us_heap to userspace_data_s 2026-02-02 11:06:53 +08:00
modem style: fix checkpatch issues after debug.h move 2026-04-07 07:50:06 -03:00
motor style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
mtd drivers/mtd/gd25: add QSPI support 2026-07-03 10:32:41 +08:00
net style: Fix "the the" typo across the codebase. 2026-03-23 11:07:49 +01:00
note note/ram: support multiple noterams to dump data when panic occurs 2026-01-24 19:33:17 +08:00
nx nuttx/nx: compilation error occurs 2026-04-14 13:35:26 +08:00
pci drivers/pci:write legacy num to config space when enable legacy irq 2026-01-30 12:50:42 +08:00
pinctrl
power style: Fix "the the" typo across the codebase. 2026-03-23 11:07:49 +01:00
rc style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
regmap
reset style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
rf
rpmsg drivers/rpmsg: use NuttX atomic_t API instead of C11 atomics 2026-05-21 06:28:36 +08:00
rptun rptun: add configuring the stack of rptun as static 2026-01-19 14:18:27 +08:00
segger
sensors !sensors/bme680: allow sensor configuration during registration 2026-06-10 20:45:31 +02:00
serial drivers/serial: add job-control TTY ioctls and libc wrappers 2026-08-06 17:48:04 +08:00
spi stm32h5/qspi: add QSPIMEM_QUADDATA flag for 1-1-4 transfers 2026-07-03 10:32:41 +08:00
syslog driver/ramlog: Implement the rate limiting function for ramlog driver. 2026-01-27 03:17:05 +08:00
timers drivers/watchdog: fix capture automonitor notifier context 2026-08-03 17:22:37 +08:00
usb drivers/usbhost/usbhost_cdcecm.c: Added support for Host CDC-ECM 2026-05-06 06:20:03 +08:00
usrsock
vhost drivers/vhost: add vhost_get_vq_buffers() to collect scatter-gather buffers 2026-02-04 02:32:02 +08:00
video video/rgbcolors: Fix RGBTO8 to use the high bits of each component. 2026-08-10 22:43:20 +08:00
virtio include/nuttx/virtio: allow common virtio helpers to be used by vhost 2026-02-04 02:32:02 +08:00
wireless wireless/cc1101: Add MSK/4-FSK, dynamic PATABLE ramping, and fix IOCTL safety 2026-03-11 16:05:19 +01:00
.gitignore
addrenv.h addrenv: support addrenv when mpu is used 2026-01-26 16:27:19 +08:00
allsyms.h
arch.h style: Fix "the the" typo across the codebase. 2026-03-23 11:07:49 +01:00
ascii.h
atexit.h
atomic.h include/nuttx/atomic.h: fix C++ definition conflicts 2025-12-22 15:27:39 +08:00
bits.h
board.h drivers/usbhost/usbhost_enumerate.c: Allow selecting USB configuration 2026-05-06 06:20:03 +08:00
cache.h nuttx/cache.h: fix the compile warning in sim when enable OpenAMP 2025-12-31 02:36:29 +08:00
can.h drivers/can: move CAN utils to CAN common files 2025-05-14 10:30:25 -03:00
cancelpt.h sched/cancelpt: Fix MISRA C 2012 Rule 10.4 violations 2026-02-02 21:09:40 +08:00
circbuf.h lib/circbuf: add static initialize macro helper 2024-12-17 20:48:23 +08:00
clock.h !sys/types.h: change time_t and clock_t to int64_t to align with other OSes 2026-05-19 16:21:28 +08:00
clock_notifier.h fs/timerfd: implement TFD_TIMER_CANCEL_ON_SET to detect clock changes 2026-01-30 17:20:24 +08:00
compiler.h float.h: improve long double related definitions 2026-07-03 10:32:57 +08:00
coredump.h coredump: fix issue that nvic region overlapped by board memory region 2025-01-24 09:15:56 +08:00
crc8.h libs/crc: implement AUTOSAR-compatible CRC algorithm 2026-01-30 17:32:15 +08:00
crc16.h libs/crc: implement AUTOSAR-compatible CRC algorithm 2026-01-30 17:32:15 +08:00
crc32.h libs/crc: implement AUTOSAR-compatible CRC algorithm 2026-01-30 17:32:15 +08:00
crc64.h !compiler: drop CONFIG_HAVE_LONG_LONG and require long long support 2026-05-19 16:21:28 +08:00
debug.h include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
elf.h
environ.h
envpath.h
ethtool.h
event.h [!] sched/event: Remove wait object dependency from event implementation 2025-10-31 19:56:32 -03:00
fdcheck.h
fdt.h qemu/armv7a: register cfi flash 2025-02-11 17:23:44 +08:00
gdbstub.h gdbstub: change send buffer to const char 2025-01-20 20:07:13 +08:00
hashtable.h
hrtimer.h sched/hrtimer: Update the comments. 2026-02-02 13:26:22 +08:00
idr.h
init.h sched: add trace points during system startup and board initialization 2026-01-27 03:18:11 +08:00
instrument.h style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
ipcc.h style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
irq.h sched/irq: Consolidate IRQ bounds checking into IRQ_TO_NDX macro 2026-01-28 13:35:30 +08:00
kmalloc.h
kthread.h
lin.h LIN:adjust the LIN flag 2026-01-08 23:15:31 +08:00
lirc.h
list.h list: Fix the list conflicts. 2026-01-19 14:12:09 +08:00
list_type.h list: Fix the list conflicts. 2026-01-19 14:12:09 +08:00
macro.h macro: use portable variadic macros 2026-01-22 22:14:00 +08:00
memoryregion.h
mmcsd.h
module.h libc/elf: rename modlib to libelf 2025-04-11 09:43:22 +08:00
mqueue.h !sys/types.h: change time_t and clock_t to int64_t to align with other OSes 2026-05-19 16:21:28 +08:00
mutex.h sched/pthread: move pthread mutex from syscall to user-space 2026-01-22 12:40:49 -03:00
notifier.h include/debug.h: Move to include/nuttx/debug.h 2026-04-07 07:50:06 -03:00
nuttx.h macro/align: Fix ALIGN_UP and ALIGN_DOWN 2025-01-11 12:13:10 +08:00
page.h style: Fix "is is" typo across the codebase. 2026-03-24 09:39:26 +08:00
panic_notifier.h
pgalloc.h mm/gran: add gran_alloc_align API 2025-05-12 15:01:37 +08:00
progmem.h
pthread.h pthread: move pthread_cond to userspace 2026-01-26 16:26:39 +08:00
queue.h
random.h
reboot_notifier.h
rwsem.h sched/sem_rw.c: Add downgrade_write API for sem_rw 2026-01-07 22:47:09 +08:00
sched.h Documentation/sched: Add POSIX user identity transition docs 2026-06-17 17:13:57 +08:00
sched_note.h note: add NOTE_DUMP_BINARY support for binary log dumping 2026-01-27 21:56:03 +08:00
scsi.h style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
sdio.h arch/arm/src/stm32{h7,f7,l4}: add 4-bit wide bus support for MMC/eMMC cards 2026-08-05 15:55:14 +08:00
sdio_slave.h style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
semaphore.h include/nuttx/semaphore.h: parenthesize NXSEM helper args 2026-06-10 22:39:46 +08:00
seqlock.h seqlock: Fix struct name and constants. 2025-12-22 10:22:06 -03:00
signal.h sched/signal: Remove shadow definitions to reduce unnecessary API 2025-10-14 17:40:18 +08:00
spawn.h
spinlock.h sched/spinlock: Add time statistics in func enter_critical_section(). 2026-01-27 21:59:14 +08:00
spinlock_type.h seqlock: Fix struct name and constants. 2025-12-22 10:22:06 -03:00
streams.h libc/stream: Add support for lib_scanf 2025-06-20 09:48:39 +08:00
symtab.h
tee.h drivers/misc/optee: Expanded RPC support. 2025-08-06 02:29:33 +08:00
thermal.h drivers/thermal: Add support for passive trip point 2025-02-16 11:22:41 -03:00
tls.h pthread: remove tl_lock 2026-01-26 20:56:12 +08:00
trace.h trace: fix macro line continuation formatting 2026-01-25 10:45:26 -03:00
uorb.h drivers/sensors: add initial support for fixed-point data for sensors 2026-05-02 00:56:42 +08:00
userspace.h protect: move us_heap to userspace_data_s 2026-02-02 11:06:53 +08:00
vt100.h
wdog.h drivers: Fix comment typos — 'Pubic' → 'Public' across drivers and headers. 2026-07-04 02:00:24 +08:00
wqueue.h !sys/types.h: change time_t and clock_t to int64_t to align with other OSes 2026-05-19 16:21:28 +08:00
zoneinfo.h