19718: drivers/dht: busy wait reimplementation r=benpicco a=hugueslarrive
### Contribution description
In PR #19674, I also provided quick and dirty fixes to restore functionality on esp8266 and enable operation on AVR. While reviewing PR #18591, it became apparent to me that this driver needed a refresh, particularly its migration to ztimer.
The cause of the malfunction on esp8266 was that since the default switch to ztimer as the backend for xtimer, XTIMER_BACKOFF was no longer taken into account. Therefore, the correction I provided in PR #19674 simply made explicit what was previously done implicitly with xtimer and now needs to be done explicitly with ztimer (spinning instead of sleeping).
Moreover, it was unnecessarily complex to measure the pulse duration in a busy-wait implementation, which required 2 calls to ztimer_now() and 32-bit operations expensive on 8-bit architecture. Instead, it is sufficient to read the state of the bus at the threshold moment.
Finally, in practice, it is possible to reduce the read interval (down to less than 0.5s for DHT22) by "harassing" the DHT with start signals until it responds.
This re-implementation brings the following improvements:
- Many backports from `@maribu's` IRQ based implementation (#18591):
- Use of ztimer
- Use of errno.h
- Use of a dht_data structure to pass arguments, to facilitate integration
- Adaptation of the bit parsing technique to parse bits into the data array
- Reintroduction of DHT11/DHT22 differentiation.
- Separation of `dht_read()` steps into functions for better readability and the ability to share certain functions among different implementations
- Sensor presence check in `dht_init()`
- ~~Automatic adjustment to a minimum data hold time~~
- Default input mode changed to open drain (a pull-up resistor should be placed close to the output if necessary but not close to the input)
- AVR support without platform-specific handling by avoiding ztimer_spin() and using the overflow of an 8-bit variable as a pre-timeout to minimize time-consuming ztimer_now() calls
Regarding the changes in the start signal sequence and the removal of the `_reset()` function:
~~In the previous implementation, there was an unnecessary spike at the beginning of the signal sequence, corresponding to START_HIGH_TIME. This spike has been removed in the re-implementation, as it is unnecessary. Instead, the MCU now simply pulls the signal low for START_LOW_TIME and then releases the bus, which is sufficient for initiating communication with the DHT sensor.~~ Actually, it is necessary to raise the bus level; otherwise, the _wait_for_level() called immediately after to check the response of the DHT may read the port before the signal level is raised, resulting in a false positive.
Additionally, the previous implementation had an issue where the MCU switched back to output mode and went high immediately after reading the 40 bits of data. However, the DHT sensor was still transmitting 2 or 3 additional bytes of '0' at that point, causing a conflict. This issue has been resolved in the re-implementation:
~~Regarding the optimization for AVR, I have performed measurements of `_wait_for_level()` until timeout (85 loops):~~
~~- on esp8266-esp-12x: 264 µs, which is 3.11 µs per loop~~
~~- on nucleo-f303k8: 319 µs, which is 3.75 µs per loop~~
~~- on arduino-nano: 3608 µs, which is 42.45 µs per loop~~
~~Duration measurements on the Arduino Nano:~~
19737: dist/tools/openocd: start debug-server in background and wait r=benpicco a=fabian18
19746: buildsystem: Always expose CPU_RAM_BASE & SIZE flags r=benpicco a=Teufelchen1
### Contribution description
Hello 🐧
This moves the definition of `CPU_RAM_BASE/SIZE` from being only available in certain situation to be always available.
Reason for change is to simplify common code in the cpu folder.
In cooperation with `@benpicco`
### Testing procedure
Passing CI
### Issues/PRs references
First usage will be in the PMP driver. Although there is more code in RIOT that could be refactored to use these defines instead of hacks / hardcoded values.
Co-authored-by: Hugues Larrive <hlarrive@pm.me>
Co-authored-by: Fabian Hüßler <fabian.huessler@ml-pa.com>
Co-authored-by: Teufelchen1 <bennet.blischke@outlook.com>
- many backports from @maribu's IRQ based implementation (#18591)
- use of ztimer and errno.h
- separation of dht_read() steps into functions for better readability
- reintroduction of DHT11/DHT22 differentiation
- sensor presence checking in dht_init()
- default input mode changed to open drain
- AVR support without platform-specific handling by avoiding
ztimer_spin() and using the overflow of an 8-bit variable as a
pre-timeout to minimize time-consuming ztimer_now() calls
- add a new DHT11_2022 type for 0.01 °C resolution devices
- data caching removed
19703: cpu/sam0_eth: interrupt based link detection/auto-negotiation r=benpicco a=benpicco
19724: dist/tools/openocd: add OPENOCD_SERVER_ADDRESS variable r=benpicco a=fabian18
19735: nrf5x_common: Clear I2C periph shorts r=benpicco a=bergzand
### Contribution description
The I2C peripheral's shortcuts are used with the read and write register to automatically stop the I2C transaction or to continue with the next stage.
With simple I2C read and write bytes these shorts are not used, but are also not cleared by the function in all cases, causing it to use the shortcut configuration set by a previous function call. This patch ensures that the shorts are always set by the read and write functions
### Testing procedure
Should be possible to spot with a logic analyzer and the I2C periph test. Maybe the HIL test can also detect it :)
### Issues/PRs references
None
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Fabian Hüßler <fabian.huessler@ml-pa.com>
Co-authored-by: Koen Zandberg <koen@bergzand.net>
19695: drivers/hih6130: avoid using floats r=maribu a=maribu
### Contribution description
- avoid using floating point arithmetic
- use ztimer instead of xtimer
- use fmt to print fixed point numbers in the test app
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@posteo.net>
19696: drivers/mq3: avoid use of floats r=maribu a=maribu
19698: tests/pkg/lvgl: avoid using floats r=maribu a=maribu
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@posteo.net>
19691: drivers/bmx055: fix crazy use of FPU r=maribu a=maribu
### Contribution description
As the title says...
19694: tests/drivers/epd_bw_spi_disp_dev: fix accidental use of FPU r=maribu a=maribu
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@posteo.net>
19610: drivers/periph/rtc: improve doc on rtc_set_alarm r=maribu a=maribu
### Contribution description
- point out behavior on denormalized time stamps
- use errno codes to indicate errors (and adapt the few instances of actual error handling to use them)
19670: cpu/stm32: stm32f4 BRR from BSRR r=maribu a=kfessel
### Contribution description
sometimes one wants to save one instruction :)
just write the bits we need to write.
### Testing procedure
tests/periph/gpio_ll tests this
### Issues/PRs references
`@maribu` might know some reference
maybe #19407
19678: gnrc_sixlowpan_iphc: fix NULL pointer dereference r=maribu a=miri64
19679: gnrc_sixlowpan_frag_sfr: fix ARQ scheduler race-condition r=maribu a=miri64
19680: gnrc_sixlowpan_frag_rb: fix OOB write in _rbuf_add r=maribu a=miri64
19681: sys/xtimer: improve documentation r=maribu a=maribu
### Contribution description
- Add a warning that xtimer is deprecated, so that new code hopefully starts using ztimer
- Add a hint that `ztimer_xtimer_compat` can be used even after `xtimer` is gone
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
Co-authored-by: Karl Fessel <karl.fessel@ovgu.de>
Co-authored-by: Martine Lenders <m.lenders@fu-berlin.de>
- point out behavior on denormalized time stamps
- use errno codes to indicate errors (and adapt the few instances of
actual error handling to use them)
19556: tools/mspdebug: fix `make debug` and `make debugserver` r=aabadie a=maribu
### Contribution description
The semantics of `make debug` and `make debugserver` have changed in the years since the MSP430 integration. This brings the implementation back into line with the current semantics
- `make debug` now starts both mspdebug and GDB, no need to run `make debugserver` prior to `make debug` anymore
- `make debug` no longer flashes the target to not waste flash erase cycles
- GDB mutliarch support is added
- support for selecting a debug adapter by its serial is added
19662: driver/lc709203f: remove unnecessary use of float r=aabadie a=kfessel
### Contribution description
removes a unnecessary use of float
### Testing procedure
read and test if you got that hardware (I don't)
### Issues/PRs references
#19614
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
Co-authored-by: Karl Fessel <karl.fessel@ovgu.de>
19650: drivers/nrf24l01p: model in kconfig r=aabadie a=aabadie
19660: cpu/rpx0xx: Fix kconfig model r=aabadie a=MrKevinWeiss
### Contribution description
Broken master due to incorrect model of the periph_pio in kconfig.
### Testing procedure
Green murdock (now that the board is added to the list)
### Issues/PRs references
Look at the master CI...
Co-authored-by: Alexandre Abadie <alexandre.abadie@inria.fr>
Co-authored-by: MrKevinWeiss <weiss.kevin604@gmail.com>
19549: pkg/littlefs2: bump version to 2.6 r=benpicco a=benpicco
19608: build system: fix `make compile-commands BUILD_IN_DOCKER=1` r=benpicco a=maribu
### Contribution description
Just run `make compile-commands` outside of docker, as the compile commands generated in the docker container won't be helpful for tools outside of the container anyway.
19657: drivers/mpu9x50: clean up code r=benpicco a=maribu
### Contribution description
Avoid using floating point arithmetic and some minor cleanups.
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
19647: drivers/mtd_spi_nor: fix hang and debug msgs r=aabadie a=Enoch247
### Contribution description
This patch adds a missing release of the SPI bus on error
### Testing procedure
This was discovered while attempting to bring up a board where I had the pin definitions wrong for a SPI flash part. Once the driver was fixed I was able to get the debug messages and not hang other drivers using the same bus.
### Issues/PRs references
None known
Co-authored-by: Joshua DeWeese <jdeweese@primecontrols.com>
This patch releases the SPI bus when the memory devices is not found.
This frees the bus for other devices to use the bus. It also allows
future attempts to init the device.
The lowest possible value is `LORA_SF5` and not `LORA_SF6`. This fixes
the argument validation to allow setting `LORA_SF5` as spreading factor.
Fixes https://github.com/RIOT-OS/RIOT/issues/17861
17830: periph/timer: fix Kconfig menu title r=aabadie a=gschorcht
### Contribution description
This PR is a very small fix of inconsistent peripheral driver entry in `Kconfig` for `periph/timer`.
In Kconfig menu `(Top) → Drivers → Peripherals drivers` all entries start with the peripheral name in alphabetical order with only one exception, the timer entry. This entry is called `Configure timer peripheral driver`:
```
[ ] CPU unique ID
[ ] EEPROM peripheral driver
[ ] Flashpage peripheral driver ----
[*] GPIO peripheral driver --->
[ ] HWRNG peripheral driver
[ ] PWM peripheral driver
[*] Power Management (PM) peripheral driver
[*] Auto initialize Power Management (PM) peripheral
[ ] Quadrature Decoder (QDEC) peripheral driver
[ ] RTC peripheral driver ----
[ ] SPI peripheral driver ----
[*] UART peripheral driver --->
[*] Configure timer peripheral driver --->
```
This is confusing and doesn't help to find the right entry. This PR
1. changes the entry to `Timer peripheral driver` and
2. corrects the alphabetical order.
### Testing procedure
Use command
```
TEST_KCONFIG=1 make -C tests/periph_timer menuconfig
```
and check the output. in menu `(Top) → Drivers → Peripherals drivers`. It should be with this PR:
```
[ ] CPU unique ID
[ ] EEPROM peripheral driver
[ ] Flashpage peripheral driver ----
[*] GPIO peripheral driver --->
[ ] HWRNG peripheral driver
[ ] PWM peripheral driver
[*] Power Management (PM) peripheral driver
[*] Auto initialize Power Management (PM) peripheral
[ ] Quadrature Decoder (QDEC) peripheral driver
[ ] RTC peripheral driver ----
[ ] SPI peripheral driver ----
[*] Timer peripheral driver --->
[*] UART peripheral driver --->
```
### Issues/PRs references
19635: drivers/mrf24j40: cleanup function r=aabadie a=maribu
### Contribution description
`_set_csma_params()` spends some time to prepare a value in `uint8_t tmp`, which then is never used. Likely this is a leftover of moving code to `mrf24j40_set_csma_max_retries()`. This drops the leftover code.
Co-authored-by: Gunar Schorcht <gunar@schorcht.net>
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
`_set_csma_params()` spends some time to prepare a value in
`uint8_t tmp`, which then is never used. Likely this is a leftover
of moving code to `mrf24j40_set_csma_max_retries()`. This drops the
leftover code.
19633: drivers/slipdev: fix logic bug r=fabian18 a=maribu
### Contribution description
A typo resulted in a boolean expression to always be true and the `_poweron()` function to always exit early. This fixes the issue.
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
19631: drivers/dfplayer: fix bug in utility function r=maribu a=maribu
### Contribution description
Apparently, those functions have never been used. Otherwise this obvious bug wouldn't have sailed unnoticed for so long.
19632: drivers/pcf857x: fix error handling r=maribu a=maribu
### Contribution description
This fixes a typo/copy paste error in the error handling.
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
The `mtd_default` module defines `MTD_NUMOF` if not existing based on the `MTD_*` defines which are usually set to the corresponding MTD device pointer variables `mtd*`. However, these MTD device pointer variables are not always made known by external variable declarations. An example are SD Card Interfaces which are defined via the `mtd_sdcard_default` module. As a consequence, an application that uses `mtd_default` has still to be modified. Therefore, `mtd_default` also declares up to 6 `mtd*` MTD device pointer variables.
19523: boards/iotlab-m3: enable l3g4200d_ng r=benpicco a=benpicco
19527: drivers/sdcard_spi: small cleanup r=benpicco a=gschorcht
### Contribution description
This PR provides a small cleanup:
- the copy of `sdcard_spi_params_t` is removed (commit bfc2a51f70)
- the documentation was changed to fit the 100 characters per line. (commit 36f0162b34)
It is not necessary to hold a complete copy `sdcard_spi_params_t` in the device descriptor. Constant parameters can be used directly from ROM instead. This saves 24 bytes of RAM.
### Testing procedure
Use any board with SD Card SPI interface. The driver test should still work, for example:
```
BOARD=esp32-wrover-kit make -j8 -C tests/driver_sdcard_spi flash term
```
```
main(): This is RIOT! (Version: 2023.07-devel-176-g7213c-drivers/sdcard_spi_cleanup)
SD-card spi driver test application
insert SD-card and use 'init' command to set card to spi mode
WARNING: using 'write' or 'copy' commands WILL overwrite data on your sd-card and
almost for sure corrupt existing filesystems, partitions and contained data!
> init
Initializing SD-card at SPI_0...
[OK]
>
```
### Issues/PRs references
19530: sys/xtimer: add missing "modules.h" include to `xtimer.h` r=benpicco a=kaspar030
19532: tests/unittests: tests-core-mbox: add missing `container.h` include r=benpicco a=kaspar030
19533: core: move macros/math.h to core/lib/include/macros r=benpicco a=kaspar030
19535: nanocoap_sock: defuse nanocoap_sock_get() API footgun r=benpicco a=benpicco
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Gunar Schorcht <gunar@schorcht.net>
Co-authored-by: Kaspar Schleiser <kaspar@schleiser.de>
