Sending and receiving data series API

DFlow_Write

uint32_t DFlow_Write(_DFlow *df, 
                    uint8_t *pcBuf, 
                    uint32_t ui32Len
                    );

Send a piece of data using a DFlow object. It actually pushes the buffer to be sent and sends it all when the time is right.

df：DFlow object to be sent

pcBuf：Buffer header of the data expected to be sent

ui32Len：Len of the data to be sent

DFLOW_API_RETURN_DEFAULT(0x00)：Normal return

DFLOW_API_RETURN_BUFFER_FULL(0x20)：Buffer to be sent is full

uint32_t DFlow_Writec(_DFlow *df, 
                    uint8_t data
                    );

Send a byte using some DFlow object. It actually pushes the buffer to be sent and sends it all when the time is right.

df：DFlow object to be sent

data：Bytes of data expected to be sent

DFLOW_API_RETURN_DEFAULT(0x00)：Normal return

DFLOW_API_RETURN_BUFFER_FULL(0x20)：Buffer to be sent is full

uint32_t DFlow_Writec(_DFlow *df, 
                    uint8_t *data_rx
                    );

Take a byte from some DFlow object. Actually get the data from the received buffer.

df：DFlow object from which the data is expected

data_rx：Bytes of data to retrieve

DFLOW_API_RETURN_DEFAULT(0x00)：Normal return

DFLOW_API_RETURN_BUFFER_EMPTY(0x21)：Buffer to be received is empty

DFlow_Init