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AP_SerialManager: ensure users can't break SERIAL0_PROTOCOL

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this prevents users from setting SERIAL0_PROTOCOL to something that
prevents them accessing the board. This can happen when users are
trying to setup SLCAN
This commit is contained in:
Andrew Tridgell 2020-01-08 09:08:17 +11:00
parent eb452478ac
commit da2f60ae95
1 changed files with 12 additions and 0 deletions
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12
libraries/AP_SerialManager/AP_SerialManager.cpp
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@ -355,6 +355,18 @@ void AP_SerialManager::init()
state[7].uart = hal.uartH; // serial7
#endif
#ifdef HAL_OTG1_CONFIG
/*
prevent users from changing USB protocol to other than
MAVLink. This fixes an issue where users trying to get SLCAN
change SERIAL0_PROTOCOL to 22 and find they can no longer connect
*/
if (state[0].protocol != SerialProtocol_MAVLink &&
state[0].protocol != SerialProtocol_MAVLink2) {
state[0].protocol.set(SerialProtocol_MAVLink2);
}
#endif
#if SERIALMANAGER_NUM_PORTS > 0
if (state[0].uart == nullptr) {
init_console();