Static Call Graph - [OLED STM32F0308CC\OLED STM32F0308CC.axf]

# Static Call Graph for image OLED STM32F0308CC\OLED STM32F0308CC.axf

#<CALLGRAPH># ARM Linker, 6210000: Last Updated: Tue Sep 3 22:14:27 2024

### Maximum Stack Usage = 264 bytes + Unknown(Functions without stacksize, Cycles, Untraceable Function Pointers)

### Call chain for Maximum Stack Depth:

__rt_entry_main ⇒ main ⇒ OLCD_write_string ⇒ HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred

### Functions with no stack information

- __user_initial_stackheap

### Mutually Recursive functions

- ADC1_IRQHandler ⇒ ADC1_IRQHandler
- HardFault_Handler ⇒ HardFault_Handler
- NMI_Handler ⇒ NMI_Handler

  ### Function Pointers

  - ADC1_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - DMA1_Channel1_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - DMA1_Channel2_3_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - DMA1_Channel4_5_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - EXTI0_1_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - EXTI2_3_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - EXTI4_15_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - FLASH_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - HardFault_Handler from stm32f0xx_it.o(.text.HardFault_Handler) referenced from startup_stm32f030x8.o(RESET)
  - I2C1_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - I2C2_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - NMI_Handler from stm32f0xx_it.o(.text.NMI_Handler) referenced from startup_stm32f030x8.o(RESET)
  - PendSV_Handler from stm32f0xx_it.o(.text.PendSV_Handler) referenced from startup_stm32f030x8.o(RESET)
  - RCC_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - RTC_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - Reset_Handler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - SPI1_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - SPI2_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - SVC_Handler from stm32f0xx_it.o(.text.SVC_Handler) referenced from startup_stm32f030x8.o(RESET)
  - SysTick_Handler from stm32f0xx_it.o(.text.SysTick_Handler) referenced from startup_stm32f030x8.o(RESET)
  - SystemInit from system_stm32f0xx.o(.text.SystemInit) referenced from startup_stm32f030x8.o(.text)
  - TIM14_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM15_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM16_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM17_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM1_BRK_UP_TRG_COM_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM1_CC_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM3_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - TIM6_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - USART1_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - USART2_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - WWDG_IRQHandler from startup_stm32f030x8.o(.text) referenced from startup_stm32f030x8.o(RESET)
  - __main from __main.o(!!!main) referenced from startup_stm32f030x8.o(.text)

  ### Global Symbols

  __main (Thumb, 8 bytes, Stack size 0 bytes, __main.o(!!!main))
  [Calls]

  - >> __scatterload
  - >> __rt_entry
  [Address Reference Count : 1]
  - startup_stm32f030x8.o(.text)

  __scatterload (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter))
  [Called By]

  - >> __main

  __scatterload_rt2 (Thumb, 74 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)
  [Calls]

  - >> __rt_entry

  __scatterload_rt2_thumb_only (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)

  __scatterload_loop (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)

  __scatterload_copy (Thumb, 26 bytes, Stack size unknown bytes, __scatter_copy.o(!!handler_copy), UNUSED)
  [Calls]

  - >> __scatterload_copy
  [Called By]
  - >> __scatterload_copy

  __scatterload_null (Thumb, 2 bytes, Stack size unknown bytes, __scatter.o(!!handler_null), UNUSED)

  __scatterload_zeroinit (Thumb, 28 bytes, Stack size unknown bytes, __scatter_zi.o(!!handler_zi), UNUSED)

  __rt_lib_init (Thumb, 0 bytes, Stack size unknown bytes, libinit.o(.ARM.Collect$$libinit$$00000000))
  [Called By]

  - >> __rt_entry_li

  __rt_lib_init_alloca_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000030))

  __rt_lib_init_argv_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002E))

  __rt_lib_init_atexit_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001D))

  __rt_lib_init_clock_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000023))

  __rt_lib_init_cpp_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000034))

  __rt_lib_init_exceptions_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000032))

  __rt_lib_init_fp_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000002))

  __rt_lib_init_fp_trap_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000021))

  __rt_lib_init_getenv_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000025))

  __rt_lib_init_heap_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000C))

  __rt_lib_init_lc_collate_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000013))

  __rt_lib_init_lc_ctype_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000015))

  __rt_lib_init_lc_monetary_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000017))

  __rt_lib_init_lc_numeric_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000019))

  __rt_lib_init_lc_time_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001B))

  __rt_lib_init_preinit_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000006))

  __rt_lib_init_rand_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000010))

  __rt_lib_init_relocate_pie_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000004))

  __rt_lib_init_return (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000035))

  __rt_lib_init_signal_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001F))

  __rt_lib_init_stdio_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000027))

  __rt_lib_init_user_alloc_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000E))

  __rt_lib_shutdown (Thumb, 0 bytes, Stack size unknown bytes, libshutdown.o(.ARM.Collect$$libshutdown$$00000000))
  [Called By]

  - >> __rt_exit_ls

  __rt_lib_shutdown_cpp_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000002))

  __rt_lib_shutdown_fp_trap_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000007))

  __rt_lib_shutdown_heap_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000F))

  __rt_lib_shutdown_return (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000010))

  __rt_lib_shutdown_signal_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000A))

  __rt_lib_shutdown_stdio_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000004))

  __rt_lib_shutdown_user_alloc_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000C))

  __rt_entry (Thumb, 0 bytes, Stack size unknown bytes, __rtentry.o(.ARM.Collect$$rtentry$$00000000))
  [Called By]

  - >> __scatterload_rt2
  - >> __main

  __rt_entry_presh_1 (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$00000002))

  __rt_entry_sh (Thumb, 0 bytes, Stack size unknown bytes, __rtentry4.o(.ARM.Collect$$rtentry$$00000004))
  [Stack]

  - Max Depth = 8 + Unknown Stack Size
  - Call Chain = __rt_entry_sh ⇒ __user_setup_stackheap
  [Calls]
  - >> __user_setup_stackheap

  __rt_entry_li (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$0000000A))
  [Calls]

  - >> __rt_lib_init

  __rt_entry_postsh_1 (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$00000009))

  __rt_entry_main (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$0000000D))
  [Stack]

  - Max Depth = 264 + Unknown Stack Size
  - Call Chain = __rt_entry_main ⇒ main ⇒ OLCD_write_string ⇒ HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> main
  - >> exit

  __rt_entry_postli_1 (Thumb, 0 bytes, Stack size unknown bytes, __rtentry2.o(.ARM.Collect$$rtentry$$0000000C))

  __rt_exit (Thumb, 0 bytes, Stack size unknown bytes, rtexit.o(.ARM.Collect$$rtexit$$00000000))
  [Called By]

  - >> exit

  __rt_exit_ls (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000003))
  [Calls]

  - >> __rt_lib_shutdown

  __rt_exit_prels_1 (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000002))

  __rt_exit_exit (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000004))
  [Calls]

  - >> _sys_exit

  Reset_Handler (Thumb, 8 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  ADC1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Calls]

  - >> ADC1_IRQHandler
  [Called By]
  - >> ADC1_IRQHandler
  [Address Reference Count : 1]
  - startup_stm32f030x8.o(RESET)

  DMA1_Channel1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  DMA1_Channel2_3_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  DMA1_Channel4_5_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  EXTI0_1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  EXTI2_3_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  EXTI4_15_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  FLASH_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  I2C1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  I2C2_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  RCC_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  RTC_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  SPI1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  SPI2_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM14_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM15_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM16_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM17_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM1_BRK_UP_TRG_COM_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM1_CC_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM3_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  TIM6_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  USART1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  USART2_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  WWDG_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_stm32f030x8.o(.text))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  __user_initial_stackheap (Thumb, 0 bytes, Stack size unknown bytes, startup_stm32f030x8.o(.text))
  [Called By]

  - >> __user_setup_stackheap

  __use_two_region_memory (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)

  __rt_heap_escrow$2region (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)

  __rt_heap_expand$2region (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)

  __user_setup_stackheap (Thumb, 62 bytes, Stack size 8 bytes, sys_stackheap_outer.o(.text))
  [Stack]

  - Max Depth = 8 + Unknown Stack Size
  - Call Chain = __user_setup_stackheap
  [Calls]
  - >> __user_initial_stackheap
  - >> __user_perproc_libspace
  [Called By]
  - >> __rt_entry_sh

  exit (Thumb, 16 bytes, Stack size 8 bytes, exit.o(.text))
  [Stack]

  - Max Depth = 8 + Unknown Stack Size
  - Call Chain = exit
  [Calls]
  - >> __rt_exit
  - >> _call_atexit_fns (Weak Reference)
  [Called By]
  - >> __rt_entry_main

  __user_libspace (Thumb, 8 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

  __user_perproc_libspace (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text))
  [Called By]

  - >> __user_setup_stackheap

  __user_perthread_libspace (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

  _sys_exit (Thumb, 8 bytes, Stack size 0 bytes, sys_exit.o(.text))
  [Called By]

  - >> __rt_exit_exit

  __I$use$semihosting (Thumb, 0 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)

  __use_no_semihosting_swi (Thumb, 2 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)

  __semihosting_library_function (Thumb, 0 bytes, Stack size unknown bytes, indicate_semi.o(.text), UNUSED)

  HAL_GPIO_Init (Thumb, 424 bytes, Stack size 64 bytes, stm32f0xx_hal_gpio.o(.text.HAL_GPIO_Init))
  [Stack]

  - Max Depth = 64
  - Call Chain = HAL_GPIO_Init
  [Called By]
  - >> HAL_I2C_MspInit
  - >> main

  HAL_GPIO_WritePin (Thumb, 16 bytes, Stack size 0 bytes, stm32f0xx_hal_gpio.o(.text.HAL_GPIO_WritePin))
  [Called By]

  - >> main

  HAL_GetTick (Thumb, 8 bytes, Stack size 0 bytes, stm32f0xx_hal.o(.text.HAL_GetTick))
  [Called By]

  - >> I2C_WaitOnSTOPFlagUntilTimeout
  - >> I2C_WaitOnFlagUntilTimeout
  - >> I2C_WaitOnTXISFlagUntilTimeout
  - >> I2C_IsErrorOccurred
  - >> HAL_I2C_Master_Transmit
  - >> HAL_RCC_ClockConfig
  - >> HAL_RCC_OscConfig

  HAL_I2CEx_ConfigAnalogFilter (Thumb, 66 bytes, Stack size 16 bytes, stm32f0xx_hal_i2c_ex.o(.text.HAL_I2CEx_ConfigAnalogFilter))
  [Stack]

  - Max Depth = 16
  - Call Chain = HAL_I2CEx_ConfigAnalogFilter
  [Called By]
  - >> main

  HAL_I2CEx_ConfigDigitalFilter (Thumb, 66 bytes, Stack size 16 bytes, stm32f0xx_hal_i2c_ex.o(.text.HAL_I2CEx_ConfigDigitalFilter))
  [Stack]

  - Max Depth = 16
  - Call Chain = HAL_I2CEx_ConfigDigitalFilter
  [Called By]
  - >> main

  HAL_I2C_Init (Thumb, 172 bytes, Stack size 24 bytes, stm32f0xx_hal_i2c.o(.text.HAL_I2C_Init))
  [Stack]

  - Max Depth = 128
  - Call Chain = HAL_I2C_Init ⇒ HAL_I2C_MspInit ⇒ HAL_GPIO_Init
  [Calls]
  - >> HAL_I2C_MspInit
  [Called By]
  - >> main

  HAL_I2C_Master_Transmit (Thumb, 428 bytes, Stack size 48 bytes, stm32f0xx_hal_i2c.o(.text.HAL_I2C_Master_Transmit))
  [Stack]

  - Max Depth = 128
  - Call Chain = HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_GetTick
  - >> I2C_WaitOnSTOPFlagUntilTimeout
  - >> I2C_WaitOnFlagUntilTimeout
  - >> I2C_WaitOnTXISFlagUntilTimeout
  - >> I2C_IsErrorOccurred
  [Called By]
  - >> OLCD_write_string
  - >> clear_display
  - >> init_OLED

  HAL_I2C_MspInit (Thumb, 84 bytes, Stack size 40 bytes, stm32f0xx_hal_msp.o(.text.HAL_I2C_MspInit))
  [Stack]

  - Max Depth = 104
  - Call Chain = HAL_I2C_MspInit ⇒ HAL_GPIO_Init
  [Calls]
  - >> HAL_GPIO_Init
  [Called By]
  - >> HAL_I2C_Init

  HAL_IncTick (Thumb, 16 bytes, Stack size 0 bytes, stm32f0xx_hal.o(.text.HAL_IncTick))
  [Called By]

  - >> SysTick_Handler

  HAL_Init (Thumb, 28 bytes, Stack size 8 bytes, stm32f0xx_hal.o(.text.HAL_Init))
  [Stack]

  - Max Depth = 24
  - Call Chain = HAL_Init ⇒ HAL_InitTick
  [Calls]
  - >> HAL_InitTick
  - >> HAL_MspInit
  [Called By]
  - >> main

  HAL_InitTick (Thumb, 60 bytes, Stack size 16 bytes, stm32f0xx_hal.o(.text.HAL_InitTick))
  [Stack]

  - Max Depth = 16
  - Call Chain = HAL_InitTick
  [Calls]
  - >> HAL_NVIC_SetPriority
  - >> HAL_SYSTICK_Config
  - >> __aeabi_uidiv
  [Called By]
  - >> HAL_RCC_ClockConfig
  - >> HAL_Init

  HAL_MspInit (Thumb, 40 bytes, Stack size 8 bytes, stm32f0xx_hal_msp.o(.text.HAL_MspInit))
  [Stack]

  - Max Depth = 8
  - Call Chain = HAL_MspInit
  [Called By]
  - >> HAL_Init

  HAL_NVIC_SetPriority (Thumb, 48 bytes, Stack size 0 bytes, stm32f0xx_hal_cortex.o(.text.HAL_NVIC_SetPriority))
  [Called By]

  - >> HAL_InitTick

  HAL_RCC_ClockConfig (Thumb, 312 bytes, Stack size 24 bytes, stm32f0xx_hal_rcc.o(.text.HAL_RCC_ClockConfig))
  [Stack]

  - Max Depth = 40
  - Call Chain = HAL_RCC_ClockConfig ⇒ HAL_InitTick
  [Calls]
  - >> HAL_InitTick
  - >> HAL_GetTick
  - >> __aeabi_uidiv
  [Called By]
  - >> main

  HAL_RCC_OscConfig (Thumb, 1000 bytes, Stack size 48 bytes, stm32f0xx_hal_rcc.o(.text.HAL_RCC_OscConfig))
  [Stack]

  - Max Depth = 48
  - Call Chain = HAL_RCC_OscConfig
  [Calls]
  - >> HAL_GetTick
  [Called By]
  - >> main

  HAL_SYSTICK_Config (Thumb, 40 bytes, Stack size 0 bytes, stm32f0xx_hal_cortex.o(.text.HAL_SYSTICK_Config))
  [Called By]

  - >> HAL_InitTick

  HardFault_Handler (Thumb, 2 bytes, Stack size 0 bytes, stm32f0xx_it.o(.text.HardFault_Handler))
  [Calls]

  - >> HardFault_Handler
  [Called By]
  - >> HardFault_Handler
  [Address Reference Count : 1]
  - startup_stm32f030x8.o(RESET)

  NMI_Handler (Thumb, 2 bytes, Stack size 0 bytes, stm32f0xx_it.o(.text.NMI_Handler))
  [Calls]

  - >> NMI_Handler
  [Called By]
  - >> NMI_Handler
  [Address Reference Count : 1]
  - startup_stm32f030x8.o(RESET)

  OLCD_write_string (Thumb, 784 bytes, Stack size 72 bytes, ssd1306.o(.text.OLCD_write_string))
  [Stack]

  - Max Depth = 200
  - Call Chain = OLCD_write_string ⇒ HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_I2C_Master_Transmit
  [Called By]
  - >> main

  PendSV_Handler (Thumb, 2 bytes, Stack size 0 bytes, stm32f0xx_it.o(.text.PendSV_Handler))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  SVC_Handler (Thumb, 2 bytes, Stack size 0 bytes, stm32f0xx_it.o(.text.SVC_Handler))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(RESET)

  SysTick_Handler (Thumb, 8 bytes, Stack size 8 bytes, stm32f0xx_it.o(.text.SysTick_Handler))
  [Stack]

  - Max Depth = 8
  - Call Chain = SysTick_Handler
  [Calls]
  - >> HAL_IncTick
  [Address Reference Count : 1]
  - startup_stm32f030x8.o(RESET)

  SystemInit (Thumb, 2 bytes, Stack size 0 bytes, system_stm32f0xx.o(.text.SystemInit))
  [Address Reference Count : 1]

  - startup_stm32f030x8.o(.text)

  clear_display (Thumb, 144 bytes, Stack size 48 bytes, ssd1306.o(.text.clear_display))
  [Stack]

  - Max Depth = 176
  - Call Chain = clear_display ⇒ HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_I2C_Master_Transmit
  [Called By]
  - >> main

  init_OLED (Thumb, 48 bytes, Stack size 24 bytes, ssd1306.o(.text.init_OLED))
  [Stack]

  - Max Depth = 152
  - Call Chain = init_OLED ⇒ HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_I2C_Master_Transmit
  [Called By]
  - >> main

  main (Thumb, 316 bytes, Stack size 64 bytes, main.o(.text.main))
  [Stack]

  - Max Depth = 264
  - Call Chain = main ⇒ OLCD_write_string ⇒ HAL_I2C_Master_Transmit ⇒ I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> OLCD_write_string
  - >> clear_display
  - >> init_OLED
  - >> HAL_I2CEx_ConfigDigitalFilter
  - >> HAL_I2CEx_ConfigAnalogFilter
  - >> HAL_I2C_Init
  - >> HAL_GPIO_Init
  - >> HAL_GPIO_WritePin
  - >> HAL_RCC_ClockConfig
  - >> HAL_RCC_OscConfig
  - >> HAL_Init
  [Called By]
  - >> __rt_entry_main

  __aeabi_uidiv (Thumb, 68 bytes, Stack size 0 bytes, aeabi_sdivfast.o(.text_divfast))
  [Called By]

  - >> HAL_InitTick
  - >> HAL_RCC_ClockConfig

  __aeabi_idiv (Thumb, 434 bytes, Stack size 8 bytes, aeabi_sdivfast.o(.text_divfast), UNUSED)

  ### Local Symbols

  I2C_IsErrorOccurred (Thumb, 380 bytes, Stack size 40 bytes, stm32f0xx_hal_i2c.o(.text.I2C_IsErrorOccurred))
  [Stack]

  - Max Depth = 40
  - Call Chain = I2C_IsErrorOccurred
  [Calls]
  - >> HAL_GetTick
  [Called By]
  - >> I2C_WaitOnSTOPFlagUntilTimeout
  - >> I2C_WaitOnFlagUntilTimeout
  - >> I2C_WaitOnTXISFlagUntilTimeout
  - >> HAL_I2C_Master_Transmit

  I2C_WaitOnTXISFlagUntilTimeout (Thumb, 166 bytes, Stack size 24 bytes, stm32f0xx_hal_i2c.o(.text.I2C_WaitOnTXISFlagUntilTimeout))
  [Stack]

  - Max Depth = 64
  - Call Chain = I2C_WaitOnTXISFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_GetTick
  - >> I2C_IsErrorOccurred
  [Called By]
  - >> HAL_I2C_Master_Transmit

  I2C_WaitOnFlagUntilTimeout (Thumb, 250 bytes, Stack size 40 bytes, stm32f0xx_hal_i2c.o(.text.I2C_WaitOnFlagUntilTimeout))
  [Stack]

  - Max Depth = 80
  - Call Chain = I2C_WaitOnFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_GetTick
  - >> I2C_IsErrorOccurred
  [Called By]
  - >> HAL_I2C_Master_Transmit

  I2C_WaitOnSTOPFlagUntilTimeout (Thumb, 134 bytes, Stack size 24 bytes, stm32f0xx_hal_i2c.o(.text.I2C_WaitOnSTOPFlagUntilTimeout))
  [Stack]

  - Max Depth = 64
  - Call Chain = I2C_WaitOnSTOPFlagUntilTimeout ⇒ I2C_IsErrorOccurred
  [Calls]
  - >> HAL_GetTick
  - >> I2C_IsErrorOccurred
  [Called By]
  - >> HAL_I2C_Master_Transmit

  ### Undefined Global Symbols

  _call_atexit_fns (ARM, 0 bytes, Stack size 0 bytes, UNDEFINED)
  [Called By]

  - >> exit