faied do uart send with uart5 with stm32h7b0zb

[sheng yang]

I use cubemx generate a project with uart5. It's ok.

But when I move some init codes of uart5 to function ``void SystemInit (void)`` tail as below

```

MPU_Config();
HAL_Init();
SystemClock_Config();
PeriphCommonClock_Config();
MX_UART5_Init();
dbg_console_tx5("ABC21", 5);

```

 when I debug with cmsis-dap debugger I found the code stuck with

 

besides the function ``dbg_console_tx5`` is 

```

 

void dbg_console_tx5(const uint8_t *pData, uint16_t Size)

{

HAL_UART_Transmit(&huart5, pData, Size, -1);

}

```

 

is there any tips of this issue ?

 

[Tesla DeLorean]

You move WHAT there exactly?

Perhaps don't move the code there?

SystemInit() is called prior to main(), so the clocks won't be setup optimally,and SysTick won't be working, and thus timeout loops, etc. Things that normally get done in HAL_Init()

[sheng yang]

thanks for your reply，I moved these codes :

MPU_Config();
HAL_Init();
SystemClock_Config();
PeriphCommonClock_Config();
MX_UART5_Init();
dbg_console_tx5("ABC21", 5);

 

prior to main()

[sheng yang]

I'm sorry reply so late, the issue has resolved. Becase I move MX_UART5_Init prior _bss clear code, So the global handler of uart5 has some garbage value， so after I memset the global handler uart5 to zero before init the handler in MX_UART5_Init(); It's ok now.