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AP_HAL: add available method for locked state

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Siddharth Purohit 2020-05-31 17:43:03 +05:30 committed by Andrew Tridgell
parent fa0f1e4c71
commit aa893b3983
1 changed files with 4 additions and 0 deletions
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4
libraries/AP_HAL/UARTDriver.h
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@ -41,6 +41,10 @@ public:
// lock a port for exclusive use. Use a key of 0 to unlock
virtual bool lock_port(uint32_t write_key, uint32_t read_key) { return false; }
// check data available on a locked port. If port is locked and key is not correct then
// 0 is returned
virtual uint32_t available_locked(uint32_t key) { return 0; }
// write to a locked port. If port is locked and key is not correct then 0 is returned
// and write is discarded
virtual size_t write_locked(const uint8_t *buffer, size_t size, uint32_t key) { return 0; }