Definition
serial_write(ser, tx_data)
Features
This function writes the data (tx_data) to a serial port.
Parameters
|
Parameter Name |
Data Type |
Default Value |
Description |
|---|---|---|---|
|
ser |
serial.Serial |
- |
Serial instance |
|
tx_data |
byte |
- |
Data to be transmitted
|
Return
|
Value |
Description |
|---|---|
|
0 |
Success |
|
-1 |
The port is not open. |
|
-2 |
serial.SerialException error occurred |
Exception
|
Exception |
Description |
|---|---|
|
DR_Error (DR_ERROR_TYPE) |
Parameter data type error occurred |
Example
Python
ser = serial_open(port="COM", baudrate=115200, bytesize=DR_EIGHTBITS,
parity=DR_PARITY_NONE, stopbits=DR_STOPBITS_ONE)
serial_write(ser, b"123456789") # b means the byte type.
# Convert string to byte
msg = “abcd” # msg is a string variable
serial_write(ser, msg.encode()) # encode() converts string type to byte type
serial_close(ser)
Keyword
serial_ / write