I2C Between two STM32 boards not working
Hi,
i'm trying to send data from an stm32f446-nucleo board ( as a master ) to an stm32f469-disco board ( as a slave ) but it is not working correctly,
PS: Each board is connected separately to a USB Port from PC.
MASTER Code :
int main(void)
{
SystemClock_Config();
MX_GPIO_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
do
{
for(i=0; i <255; i++)
{
ret = HAL_I2C_Master_Transmit(&hi2c1, i, data, 1, HAL_MAX_DELAY);
}
}while(ret!=HAL_OK);
while (1)
{
}
}
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
}
SLAVE Code :
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_I2C1_Init();
/* USER CODE BEGIN 2 */
do
{
ret = HAL_I2C_Slave_Receive(&hi2c1, data_r, 1, 10000);
}
while(ret!=HAL_OK);
while (1)
{
}
}
static void MX_I2C1_Init(void)
{
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 100000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
}
THE REST IS AUTOMATICALLY GENERATED FROM CUBEMX
When debugging I get thoses results :
Master.jpg & slave.jpg
