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comments on Arduino flush() method (#8318)

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This commit is contained in:
david gauchard
2021-09-29 15:22:30 +02:00
committed by GitHub
parent 93b7325cb8
commit 9d024d17fd
4 changed files with 7 additions and 4 deletions
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2
cores/esp8266/HardwareSerial.h
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@ -183,7 +183,7 @@ public:
{
return static_cast<int>(uart_tx_free(_uart));
}
void flush(void) override;
void flush(void) override; // wait for all outgoing characters to be sent, output buffer is empty after this call
size_t write(uint8_t c) override
{
return uart_write_char(_uart, c);

5
cores/esp8266/Print.h
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@ -110,7 +110,10 @@ class Print {
size_t println(const Printable&);
size_t println(void);
virtual void flush() { /* Empty implementation for backward compatibility */ }
// flush():
// Empty implementation by default in Print::
// should wait for all outgoing characters to be sent, output buffer is empty after this call
virtual void flush() { }
// by default write timeout is possible (outgoing data from network,serial..)
// (children can override to false (like String))