STM32CubeIDE + FreeRTOS: sharing I2C in DMA mode between two tasks using notify from ISR

[Petr3]

Hello,

i need help how to share I2C in DMA mode between two FreeRTOS tasks.

I have two tasks:

Task 1:

osMutexAcquire(I2C1_MutexHandle, HAL_MAX_DELAY);
Task_Notification_I2C1 = WM8731;
configASSERT(xTaskToNotifyI2C1_WM8731 == NULL );
xTaskToNotifyI2C1_WM8731 = xTaskGetCurrentTaskHandle();
Status = HAL_I2C_Master_Transmit_DMA(&hi2c1, (uint16_t)WM8731_I2C_ADDRESS, data, 2);

ulNotificationValue = ulTaskNotifyTake(pdFALSE, HAL_MAX_DELAY);
if(ulNotificationValue)
	osMutexRelease(I2C1_MutexHandle);
else
	DEBUGOUT("WM8731_Set_Register I2C timeout...\r\n");

Task 2:

osMutexAcquire(I2C1_MutexHandle, HAL_MAX_DELAY);
Task_Notification_I2C1 = FT5426;
configASSERT(xTaskToNotifyI2C1_FT5426 == NULL );
xTaskToNotifyI2C1_FT5426 = xTaskGetCurrentTaskHandle();
Status = HAL_I2C_Master_Receive_DMA(&hi2c1, (uint16_t)FT5426_I2C_ADDRESS, data, 64);

ulNotificationValue = ulTaskNotifyTake(pdFALSE, HAL_MAX_DELAY);
if(ulNotificationValue)
	osMutexRelease(I2C1_MutexHandle);
else
	DEBUGOUT("FT5426_Read_Complete I2C timeout...\r\n");

And ISR:

void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
{
	BaseType_t xHigherPriorityTaskWoken = pdFALSE;

	if(hi2c->Instance == I2C1)
	{
		if(xTaskToNotifyI2C1_WM8731 != NULL)
		{
			configASSERT( xTaskToNotifyI2C1_WM8731 != NULL );
			vTaskNotifyGiveFromISR(xTaskToNotifyI2C1_WM8731, &xHigherPriorityTaskWoken);
			xTaskToNotifyI2C1_WM8731 = NULL;
			portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
		}
		else if(xTaskToNotifyI2C1_FT5426 != NULL)
		{
			configASSERT( xTaskToNotifyI2C1_FT5426 != NULL );
			vTaskNotifyGiveFromISR(xTaskToNotifyI2C1_FT5426, &xHigherPriorityTaskWoken);
			xTaskToNotifyI2C1_FT5426 = NULL;
			portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
		}
	}
}

That isnt working. The mutex cannot be acquired by second task so it is in blocked state.

I dont want to use additional task for handling I2C1, i would like to use notification from ISR.

Any ideas?

Thanks