Merge #18962 #18999 #19034

18962: pkg/lwip: Force loglevel when using log module r=maribu a=yarrick



18999: Paho: Allow building for 8 and 16 bit platforms r=maribu a=OlegHahm

### Contribution description

Providing a patch to Paho upstream which uses fixed size integers (int32_t) instead of plain int whenever it is used to represent a size of an object.

This patch will allow to build the Paho package for platforms where an integer has a width of less than 32 bit.

This patch is also provided as a PR to the upstream version of Paho (https://github.com/eclipse/paho.mqtt.embedded-c/pull/238) but unfortunately the upstream seems to be unmaintained.

### Testing procedure

Build for a 8 or 16 bit platform that has enough memory for the example, e.g., https://api.riot-os.org/group__boards__atxmega-a1u-xpro.html:
BUILD_IN_DOCKER=1 BOARD=atxmega-a1u-xpro make clean all

Without this PR this build will fail, with the patches applied it will succeed.

### Issues/PRs references

This PR makes #18997 obsolete and thus reverts the change.


19034: boards/nucleo-l496zg: doc improvement r=maribu a=krzysztof-cabaj

### Contribution description

This PR adds to nucleo-l496zg documentation MCU table - similar to those, for example for, Nucleo F103RB, F302R8 or F446RE.

### Testing procedure

```
make doc
xdg-open doc/doxygen/html/group__boards__nucleo-l496zg.html
```

### Issues/PRs references

None

Co-authored-by: Erik Ekman <eekman@google.com>
Co-authored-by: Oleg Hahm <oleg@hobbykeller.org>
Co-authored-by: krzysztof-cabaj <kcabaj@gmail.com>

boards/nucleo-l496zg/doc.txt

@@ -8,6 +8,28 @@
 The Nucleo-L496ZG is a board from ST's Nucleo family supporting ARM Cortex-M4
 STM32L496ZG ultra-low-pawer microcontroller with 320KiB of RAM and 1 MiB of Flash.
 
+### MCU
+
+| MCU        |   STM32L496ZG      |
+|:---------- |:------------------ |
+| Family     | ARM Cortex-M4F     |
+| Vendor     | ST Microelectronics|
+| RAM        | 320KiB             |
+| Flash      | 1MiB               |
+| Frequency  | up to 80MHz        |
+| FPU        | yes                |
+| Timers     | 16 (2x watchdog, 1 SysTick, 11x 16-bit, 2x 32-bit) |
+| ADCs       | 3x 12-bit (24 channels |
+| UARTs      | 6 (5x UARTs and one Low-Power UART) |
+| SPIs       | 3                  |
+| I2Cs       | 4                  |
+| RTC        | 1                  |
+| CAN        | 2                  |
+| Datasheet  | [Datasheet](https://www.st.com/resource/en/datasheet/stm32l496vg.pdf) |
+| Reference Manual | [Reference Manual](https://www.st.com/resource/en/reference_manual/rm0351-stm32l47xxx-stm32l48xxx-stm32l49xxx-and-stm32l4axxx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf) |
+| Programming Manual | [Programming Manual](https://www.st.com/content/ccc/resource/technical/document/programming_manual/6c/3a/cb/e7/e4/ea/44/9b/DM00046982.pdf/files/DM00046982.pdf/jcr:content/translations/en.DM00046982.pdf) |
+| Board Manual | [Board Manual](https://www.st.com/resource/en/user_manual/um2179-stm32-nucleo144-boards-mb1312-stmicroelectronics.pdf) |
+
 ## Flashing the Board Using ST-LINK Removable Media
 
 On-board ST-LINK programmer provides via composite USB device removable media.

examples/paho-mqtt/Makefile.ci

@@ -1,16 +1,30 @@
 BOARD_INSUFFICIENT_MEMORY := \
     airfy-beacon \
+    arduino-duemilanove \
+    arduino-leonardo \
+    arduino-mega2560 \
+    arduino-nano \
+    arduino-uno \
+    atmega1284p \
+    atmega328p \
+    atmega328p-xplained-mini \
+    atxmega-a3bu-xplained \
     blackpill \
     blackpill-128kib \
     bluepill \
     bluepill-128kib \
     bluepill-stm32f030c8 \
     calliope-mini \
+    derfmega128 \
     hifive1 \
     hifive1b \
     i-nucleo-lrwan1 \
     im880b \
+    mega-xplained \
     microbit \
+    microduino-corerf \
+    msb-430 \
+    msb-430h \
     nrf51dongle \
     nrf6310 \
     nucleo-f030r8 \
@@ -34,6 +48,9 @@ BOARD_INSUFFICIENT_MEMORY := \
     stm32f7508-dk \
     stm32g0316-disco \
     stm32l0538-disco \
-    stm32mp157c-dk2 \
+    telosb \
+    waspmote-pro \
     yunjia-nrf51822 \
+    z1 \
+    zigduino \
     #

pkg/lwip/include/arch/cc.h

@@ -29,6 +29,7 @@
 #include "mutex.h"
 
 #ifdef MODULE_LOG
+#define LOG_LEVEL LOG_INFO
 #include "log.h"
 #endif
 

pkg/paho-mqtt/Makefile.dep

@@ -1,7 +1,3 @@
-# PAHO does some comparisons against literals that make certain assumptions
-# about the width of integer types which hold only true for 32 bit platforms
-FEATURES_REQUIRED += arch_32bit
-
 USEMODULE += ztimer
 USEMODULE += ztimer_msec
 USEMODULE += paho-mqtt-contrib