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AP_HAL_ChibiOS: add discard_input method on UARTDriver

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This commit is contained in:
Peter Barker 2020-05-23 10:21:58 +10:00 committed by Andrew Tridgell
parent a8d03990ec
commit 8f54de4184
2 changed files with 20 additions and 0 deletions
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18
libraries/AP_HAL_ChibiOS/UARTDriver.cpp
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@ -564,6 +564,24 @@ uint32_t UARTDriver::txspace()
return _writebuf.space(); return _writebuf.space();
} }
bool UARTDriver::discard_input()
{
if (lock_read_key != 0 || _uart_owner_thd != chThdGetSelfX()){
return false;
}
if (!_initialised) {
return false;
}
_readbuf.empty();
if (!_rts_is_active) {
update_rts_line();
}
return true;
}
int16_t UARTDriver::read() int16_t UARTDriver::read()
{ {
if (lock_read_key != 0 || _uart_owner_thd != chThdGetSelfX()){ if (lock_read_key != 0 || _uart_owner_thd != chThdGetSelfX()){

2
libraries/AP_HAL_ChibiOS/UARTDriver.h
View File

@ -47,6 +47,8 @@ public:
int16_t read_locked(uint32_t key) override; int16_t read_locked(uint32_t key) override;
void _timer_tick(void) override; void _timer_tick(void) override;
bool discard_input() override;
size_t write(uint8_t c) override; size_t write(uint8_t c) override;
size_t write(const uint8_t *buffer, size_t size) override; size_t write(const uint8_t *buffer, size_t size) override;