mcknly
LittleFS is still using malloc()
Even though buffers are provided to littlefs (see storman_service.c in 94b76e44e503777ae5352db12459fd63a14b2633), it still seems to be calling malloc() and causing FreeRTOS to overflow its heap. Increasing FreeRTOS heap in hardware/[platform]/rtos_config.h is a workaround, but we really shouldn't have LFS or any other task calling malloc.
This can be tested by placing a breakpoint at littlefs/littlefs/lfs_util.h line 249 and calling a flash filesystem function via /mnt/flash0, it will only hit the breakpoint if LFS is using malloc.
Just getting back to having some free time and was pulling down the latest to get it to compile. Seems a lot of awesome improvements have been made.
I can't seem to get it to compile though. This is a barebones compile. My Cmake settings:
# PROJECT NAME - in quotes, no spaces
set(PROJ_NAME "ALDA")
# PROJECT VERSION - in quotes, no spaces, can contain alphanumeric if necessary
set(PROJ_VER "0.1")
# CLI INTERFACE - 0: use UART for CLI (default), 1: use USB for CLI
set(CLI_IFACE 1)
# MCU PLATFORM - set the MCU platform being used (i.e. the subdir in 'hardware/')
set(PLATFORM rp2xxx)
# BOARD - set the board being used (platform-specific prebuild.cmake contains more information about boards)
set(BOARD pico_w)
# HOSTNAME - hostname will be shown at CLI prompt, and used for network connections
set(HOSTNAME "ALDA")
# BUILD OPTIONS - individual features which can be enabled or disabled
option(ENABLE_MOTD "Enable Message of the Day print at boot" true)
option(ENABLE_WIFI "Enable WiFi support" true)
option(ENABLE_HTTPD "Enable httpd web server" true)`
And the error I'm getting.
[ 52%] Linking CXX executable ALDA.elf
/usr/bin/../lib/gcc/arm-none-eabi/14.3.1/../../../../arm-none-eabi/bin/ld: ALDA.elf section `.heap' will not fit in region `RAM'
/usr/bin/../lib/gcc/arm-none-eabi/14.3.1/../../../../arm-none-eabi/bin/ld: section .stack1_dummy VMA [20040000,200407ff] overlaps section .heap VMA [2003fd80,2004057f]
/usr/bin/../lib/gcc/arm-none-eabi/14.3.1/../../../../arm-none-eabi/bin/ld: region `RAM' overflowed by 1408 bytes
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/ALDA.dir/build.make:3820: ALDA.elf] Error 1
make[1]: *** [CMakeFiles/Makefile2:1989: CMakeFiles/ALDA.dir/all] Error 2
make: *** [Makefile:91: all] Error 2
I thought that maybe I was enabling features but even with Wi-Fi support disabled and not using USB CLI I get the same heap error and the 1408 bytes is consistent no matter what I change.
I'm using the latest versions of everything. How much did you increase the heap size? My shots in the dark do not seem to be working.
#elif defined(USING_RP2040) && defined(HW_USE_WIFI)
#define RTOS_HEAP_SIZE (184*1024) // RP2040 with wireless stack
#endif
I was able to get it to compile by reducing the heap size by 2 was originally 186*1024
I'm at least able to get it to run at this point I'll see about digging into the malloc/heap issue some more