Using DMA with two UART peripherals - is it possible? - stm32

Question

I want to connect two UART peripherals using STM32G0 microcontroller via DMA. Not knowing the length of the messages in forward, I'm using function HAL_UARTEx_ReceiveToIdle_DMA() in order to receive them. Here is the part of my code:
main.h
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.
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StartDMAReceptionOverUART1();
StartDMAReceptionOverUART4();
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_Delay(10);
}
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.
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void StartDMAReceptionOverUART1(void)
{
if (HAL_UARTEx_ReceiveToIdle_DMA(m_modulePort.huart, m_modulePort.rxBuffer, m_modulePort.rxBufferSize) != HAL_OK)
{
Error_Handler();
}
__HAL_DMA_DISABLE_IT(&hdma_usart1_rx, DMA_IT_HT);
__HAL_DMA_DISABLE_IT(&hdma_usart1_rx, DMA_IT_TC);
}
void StartDMAReceptionOverUART4(void)
{
if (HAL_UARTEx_ReceiveToIdle_DMA(m_meterPort.huart, m_meterPort.rxBuffer, m_meterPort.rxBufferSize) != HAL_OK)
{
Error_Handler();
}
__HAL_DMA_DISABLE_IT(&hdma_usart4_rx, DMA_IT_HT);
__HAL_DMA_DISABLE_IT(&hdma_usart4_rx, DMA_IT_TC);
}
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These functions are similar: first HAL_UARTEx_ReceiveToIdle_DMA() is checked, then Half Transfer and Transfer Complete interrupts are disabled in order to relieve processor (I need only IDLE interrupt). The problem is inside StartDMAReceptionOverUART1() function, HAL_UARTEx_ReceiveToIdle_DMA() never returns HAL_OK and program jumps on Error_Handler(). On the other hand, StartDMAReceptionOverUART4() works perfectly fine. What could be the problem?
Also, here is the receive callback function, also written inside main.h:
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{
if(huart->Instance == m_meterPort.huart->Instance) // huart == UART4
{
memcpy(m_modulePort.txBuffer, m_meterPort.rxBuffer, Size);
HAL_UART_Transmit_DMA(m_modulePort.huart, m_modulePort.txBuffer, Size);
StartDMAReceptionOverUART4();
}
else if (huart->Instance == m_modulePort.huart->Instance) // huart == UART1
{
memcpy(m_meterPort.txBuffer, m_modulePort.rxBuffer, Size);
HAL_UART_Transmit_DMA(m_meterPort.huart, m_meterPort.txBuffer, Size);
}
else
{
return;
}
}
Callback function, in dependence of the periphery, will copy received data to a buffer and send it to the other periphery (functions memcpy() and HAL_UART_Transmit_DMA()). DMA over UART4 is in Normal mode, therefore StartDMAReceptionOverUART4() is called, inside which is HAL_UARTEx_ReceiveToIdle_DMA(). On the other hand, DMA over UART1 is in Circular mode, so there is no need for calling StartDMAReceptionOverUART4().