I am trying to connect the Raspberry Pi to a microcontroller using the USB Port. I have used the device many times and I know how the protocol works. It should reply after receiving the message that I am sending.
I am using a USB cable connected to a null cable like this one.
I am running the following python program (I am running Python 3.2):
import serial port =serial.Serial( "/dev/ttyUSB0", baudrate=57600, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, bytesize=serial.EIGHTBITS, writeTimeout = 0, timeout = 10) data=bytes([0x0c,0x80,0x09,0x00,0xf0,0xce,0x61,0x9d,0x01,0x00,0x01,0x00,0x00,0x00]) print(port.isOpen()) print("Port opened...") port.write(data) print("Data sent") while True: print("inside while") response=port.read(8) print(response) print ("Data Received") break
Raspberry Pi is not receiving anything, just timeout.
In order to test the program I ran it on my windows 7 computer running Python 3.2 changing the port to the right COM. I used the same cables. It is getting the right answer from the device and printing it.
I am sure the baudrates are right.
Any help would be appreciated.