Variable not initialized in STM32 LL MX_GPIO_Init()

[Jalon Wong]

Posted on April 13, 2018 at 09:24

STM32CubeMX v4.0

STM32CubeF1 Firmware Package v1.6.1

The following is the code generated by STM32CubeMX.

void MX_GPIO_Init(void)
{
 LL_GPIO_InitTypeDef GPIO_InitStruct; 
 // ... 
 GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT; 
 GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW; 
 GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL; 
 LL_GPIO_Init(GPIOC, &GPIO_InitStruct); 
 //... 
}
ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) 
{
 //... 
 assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); 
 //... 
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The memberPullis notinitialized that leads to the program may be blocked atassert_param().

Hope to improve.Thanks !

#ll-gpio

[Imen.D]

Posted on April 16, 2018 at 11:59

Hello,

Your reported issue is raised internally to CubeMx team for check.

Best Regards,

Imen

[Jim Frederick_2]

Posted on April 16, 2018 at 13:36

I've seen the same problem for years.

One work-around is to modify the code to initialize the struct to zero e.g.,

LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

When re-generating code, merge the new file (probably main.c in this case) with a backup of the old file using a code-merging utility and keep your changes.