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HAL_PX4: don't enable IFLOW on ports without flow control

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this should have been harmless, but breaks the GPS on Pixhawk. This
disables it until we work out why.
This commit is contained in:
Andrew Tridgell 2014-02-12 17:32:07 +11:00
parent 35791e1f05
commit b2cdd39a99
1 changed files with 2 additions and 5 deletions
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7
libraries/AP_HAL_PX4/UARTDriver.cpp
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@ -129,9 +129,6 @@ void PX4UARTDriver::begin(uint32_t b, uint16_t rxS, uint16_t txS)
cfsetspeed(&t, _baudrate);
// disable LF -> CR/LF
t.c_oflag &= ~ONLCR;
// always enable input flow control (notifying devices that we
// have space). This is harmless even if the pin is not connected
t.c_cflag |= CRTS_IFLOW;
tcsetattr(_fd, TCSANOW, &t);
}
@ -153,9 +150,9 @@ void PX4UARTDriver::set_flow_control(enum flow_control flow_control)
tcgetattr(_fd, &t);
// we already enabled CRTS_IFLOW above, just enable output flow control
if (flow_control != FLOW_CONTROL_DISABLE) {
t.c_cflag |= CRTSCTS;
t.c_cflag |= CRTSCTS | CRTS_IFLOW;
} else {
t.c_cflag &= ~CRTSCTS;
t.c_cflag &= ~(CRTSCTS | CRTS_IFLOW);
}
tcsetattr(_fd, TCSANOW, &t);
_flow_control = flow_control;