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platform: serial: add bytesAvailable() function

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This commit is contained in:
Jacob Dahl
2025-11-10 00:55:16 -05:00
committed by Daniel Agar
parent 42dccca8fc
commit 399512571b
8 changed files with 40 additions and 0 deletions
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platforms/posix/src/px4/common/SerialImpl.cpp
+12
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@@ -251,6 +251,18 @@ bool SerialImpl::close()
return true;
}
ssize_t SerialImpl::bytesAvailable()
{
if (!_open) {
PX4_ERR("Device not open!");
return -1;
}
ssize_t bytes_available = 0;
int ret = ioctl(_serial_fd, FIONREAD, &bytes_available);
return ret >= 0 ? bytes_available : 0;
}
ssize_t SerialImpl::read(uint8_t *buffer, size_t buffer_size)
{
if (!_open) {