USB to serial loopback needs read to be called first
up vote
0
down vote
favorite
We are testing CP2108 USB to serial chips serial communication from User Space.
We connected the two interfaces ttyUSB0 and ttyUSB1 tx/rx connections.
First for a proof of concept we configured the baud rate using stty and then test tx/rx by running
cat /dev/ttyUSB0 in one terminal
echo "hello" > /dev/ttyUSB0 in another terminal and it works
Why is the data lost when I run first echo command and then cat within a second. Is this the default behavior.. Can we change this
linux loopback usbserial
asked 2 days ago
md.jamal
370316
add a comment |
up vote
0
down vote
favorite
We are testing CP2108 USB to serial chips serial communication from User Space.
We connected the two interfaces ttyUSB0 and ttyUSB1 tx/rx connections.
First for a proof of concept we configured the baud rate using stty and then test tx/rx by running
cat /dev/ttyUSB0 in one terminal
echo "hello" > /dev/ttyUSB0 in another terminal and it works
Why is the data lost when I run first echo command and then cat within a second. Is this the default behavior.. Can we change this
linux loopback usbserial
asked 2 days ago
md.jamal
370316
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
We are testing CP2108 USB to serial chips serial communication from User Space.
We connected the two interfaces ttyUSB0 and ttyUSB1 tx/rx connections.
First for a proof of concept we configured the baud rate using stty and then test tx/rx by running
cat /dev/ttyUSB0 in one terminal
echo "hello" > /dev/ttyUSB0 in another terminal and it works
Why is the data lost when I run first echo command and then cat within a second. Is this the default behavior.. Can we change this
linux loopback usbserial
asked 2 days ago
md.jamal
370316
We are testing CP2108 USB to serial chips serial communication from User Space.
We connected the two interfaces ttyUSB0 and ttyUSB1 tx/rx connections.
First for a proof of concept we configured the baud rate using stty and then test tx/rx by running
cat /dev/ttyUSB0 in one terminal
echo "hello" > /dev/ttyUSB0 in another terminal and it works
Why is the data lost when I run first echo command and then cat within a second. Is this the default behavior.. Can we change this
linux loopback usbserial
linux loopback usbserial
asked 2 days ago
md.jamal
370316
asked 2 days ago
md.jamal
370316
asked 2 days ago
md.jamal
370316
asked 2 days ago
md.jamal
370316
asked 2 days ago
md.jamal
370316
370316
add a comment |
add a comment |
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53203517%2fusb-to-serial-loopback-needs-read-to-be-called-first%23new-answer', 'question_page');
}
);
Post as a guest
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
