dponyatov

Most recent activity

• use RESIZABLE_JSVARS for other boards than linux ?

  in Porting to new Devices • 5 days, 3 hours

  

  @Gordon: Did you maybe tested some experimental version of JsVars allocation for multiple non-continues memory banks for some board with all tiny-bits optimizations enabled?

  As I see in source & debugger, for STM32F4 series there is defult build used with a single preallocated array isn't it?

  void jsvReset() {
      [#ifdef](https://forum.espruino.com/search/?q=%23ifdef) RESIZABLE_JSVARS
      [#else](https://forum.espruino.com/search/?q=%23else)
          memset(jsVars, 0, sizeof(JsVar)*jsVarsSize);
      [#endif](https://forum.espruino.com/search/?q=%23endif)
  

• use RESIZABLE_JSVARS for other boards than linux ?

  in Porting to new Devices • 5 days, 4 hours

  

  What should I add to board configs and compiler defines to make build of Espruino 2v22 for STM32F4 with RESIZABLE_JSVARS enabled?

  I added -DRESIZABLE_JSVARS into compiler options, but got this error:

  /usr/lib/gcc/arm-none-eabi/12.2.1/../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/12.2.1/../../../arm-none-eabi/lib/thumb/v7e-m+fp/softfp/libg_nano.a(lib_a-sbrkr.o): in function `_sbrk_r':
  /home/pere/src/newlib-salsa/build_nano/arm-none-eabi/thumb/v7e-m+fp/softfp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/sbrkr.c:51: undefined reference to `_sbrk'
  collect2: error: ld returned 1 exit status
  make[1]: *** [make/targets/ARM.make:3: bin/horizon_2v22_dponyatov_250110.elf] Error 1
  make[1]: Leaving directory '/home/dponyatov/Espruino'
  make: *** [mk/all.mk:5: all] Error 2
  

  What I need is enabling block allocation mode but build fw with three precompiled blocks:

  • RAM 128K
    
  • CCMRAM 48K (3/4 of CCMRAM)
    
  • optional extRAM (up to 16 Mb)
    
    

  PS: I take old 2v22 thus modern versions compiles into ELF file with broken LMA/VMA table but I don't have time to fix it (all source code debug info bounded to zero address etc)

• debug (trace) Espruino core run under gdb-multiarch (arm-none-eabi-gdb)

  @dponyatov started

  • 4 comments
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  @Gordon replied
• debug (trace) Espruino core run under gdb-multiarch (arm-none-eabi-gdb)

  in General • 1 month, 2 weeks

  

  targets/stm32/jshardware.c

    // Remap system memory to address 0x0000 0000 in address space
  [#ifdef](https://forum.espruino.com/search/?q=%23ifdef) STM32F4
      SYSCFG->MEMRMP = 0x01;
  [#endif](https://forum.espruino.com/search/?q=%23endif)
  

• debug (trace) Espruino core run under gdb-multiarch (arm-none-eabi-gdb)

  in General • 1 month, 2 weeks

  

  Good day

  I built espruino_2v24_stm32f4discovery.elf which this command line:

  ~/Espruino > BOARD=STM32F4DISCOVERY DEBUG=1 make
  

  my .gdbinit:

  ## on load
  b Reset_Handler
  b SystemInit
  b main
  monitor reset halt
  

  When I try to load .elf file into the gdb I got some strange address binding for source code lines:
  0x3930 (without startup_stm32f4xx.s link)
  0x58324
  0x35076

  It looks like address bindings to Flash ROM are totally incorrect.

  At the same time, when I build my own empty startup code (generated by latest CubeMX), there are no any problems with addresses or source code.

  Next, another problem is I always got system stopped at 0x800076c address that looks like start of EXTI0_IRQHandler