Hi,
I am working on FRDM-K64 and UART. Uart is connected to modem and I have use EDMA for UART.
I am seeing after some-time, I don't get txIdle in callback and due to this my application stuck on waiting tx idle.
Indie UART EDMA driver, txState is kUART_TxBusy.
Below are code snippets,
Here is my CallBack function,
/* UART user callback */
void UART_UserCallback(UART_Type *base, uart_edma_handle_t *handle, status_t status, void *userData)
{
tx_status = status;
if (kStatus_UART_TxIdle == status)
{
txOnGoing = false;
}
}
Here is my UART Send Function,
static int NBIOT_UART_Send(uint8_t* cmd, uint16_t len)
{
while(txOnGoing)
{
vTaskDelay(pdMS_TO_TICKS(10));
}
txOnGoing = true;
int status = 0;
uart_transfer_t sendXfer;
sendXfer.data = cmd;
sendXfer.dataSize = len;
status = UART_SendEDMA(NBIOT_MODEM_UART, &g_uartEdmaHandle, &sendXfer);
return status;
}
Here is my EDMA Init Function,
/* Initialize the EDMA configuration. */
static void NBIOT_InitEDMA(void)
{
edma_config_t config;
/* Init DMAMUX */
DMAMUX_Init(NBIOT_UART_DMAMUX_BASEADDR);
/* Set channel for UART */
DMAMUX_SetSource(NBIOT_UART_DMAMUX_BASEADDR, UART_TX_DMA_CHANNEL, UART_TX_DMA_REQUEST);
DMAMUX_SetSource(NBIOT_UART_DMAMUX_BASEADDR, UART_RX_DMA_CHANNEL, UART_RX_DMA_REQUEST);
DMAMUX_EnableChannel(NBIOT_UART_DMAMUX_BASEADDR, UART_TX_DMA_CHANNEL);
DMAMUX_EnableChannel(NBIOT_UART_DMAMUX_BASEADDR, UART_RX_DMA_CHANNEL);
/* Init the EDMA module */
EDMA_GetDefaultConfig(&config);
EDMA_Init(NBIOT_UART_DMA_BASEADDR, &config);
EDMA_CreateHandle(&g_uartTxEdmaHandle, NBIOT_UART_DMA_BASEADDR, UART_TX_DMA_CHANNEL);
EDMA_CreateHandle(&g_uartRxEdmaHandle, NBIOT_UART_DMA_BASEADDR, UART_RX_DMA_CHANNEL);
/* Create UART DMA handle. */
UART_TransferCreateHandleEDMA(NBIOT_MODEM_UART, &g_uartEdmaHandle, UART_UserCallback, NULL, &g_uartTxEdmaHandle, NULL);
}
Please guide me how to resolve the issue.
