STM32F411RE I2C

Posted on September 25, 2015 at 21:34

Hello,

I would like to configure on a stm32f4 the i2c interface, but the programm crashes in the gpio_init when I add the i2c_init line. Does anyone have an idea?

int

main(
int
argc, 
char
* argv[])

{

GPIO_InitTypeDef init;

I2C_HandleTypeDef i2c1Handle;



/* CLKs enable only if needed */

__HAL_RCC_GPIOB_CLK_ENABLE();

__HAL_RCC_I2C1_CLK_ENABLE();


// SDL Port B8

init.Pin = GPIO_PIN_8;

init.Mode = GPIO_MODE_AF_PP;

init.Alternate = GPIO_AF4_I2C1;

HAL_GPIO_Init(GPIOB, &init);


init.Pin = GPIO_PIN_9;

HAL_GPIO_Init(GPIOB, &init);



i2c1Handle.Instance = I2C1;

i2c1Handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;

i2c1Handle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLED;

i2c1Handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLED;

i2c1Handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLED;

HAL_I2C_Init(&i2c1Handle);

// Infinite loop

while
(1)

{

// Add your code here.

}

}

The programm jumps everytime in this routines:

void

__attribute__((weak))

_exit(
int
code __attribute__((unused)))

{

#if !defined(DEBUG)

__reset_hardware();

#endif


// TODO: write on trace

while
(1)

;

}


// ----------------------------------------------------------------------------


void

__attribute__((weak,
noreturn
))

abort
(
void
)

{

trace_puts(
''abort(), exiting...''
);


_exit(1);

}