2.0.0-rc2 - Serial.setRxBufferSize() is missing

[szerwi]

Hardware:

Board: ESP32 Dev Module
Core Installation version: 2.0.0-rc2
IDE name: Arduino IDE
Flash Frequency: 40Mhz
PSRAM enabled: no
Upload Speed: 115200
Computer OS: Windows 10

Description:

Serial.setRxBufferSize() function is missing in HardwareSerial library in 2.0.0-rc2.

[SuGlider]

@szerwi buffer size can be set using begin(...) Function.

It is one of the parameters.
Default RX buffer size is 256 bytes.

It has not been included because UART is now implemented using IDF. There is no IDF API to change RX internal buffer size.

One work around is to end() it and then begin(...) It using a new RX buffer size in the begin parameters.

[szerwi]

@SuGlider how can I set it in the begin() function?
From HardwareSerial.h: void begin(unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1, bool invert=false, unsigned long timeout_ms = 20000UL, uint8_t rxfifo_full_thrhd = 112);
Is that a rxfifo_full_thrhd parameter?

[atanisoft]

@szerwi It's not currently exposed in HardwareSerial. @SuGlider can you add another parameter to expose it?

[SuGlider]

@szerwi, @atanisoft parameter exposed in PR #5583
new interface:

void begin(unsigned long baud, uint32_t config=SERIAL_8N1, int8_t rxPin=-1, int8_t txPin=-1, bool invert=false, unsigned long timeout_ms = 20000UL, uint8_t rxfifo_full_thrhd = 112, size_t rxBufferSize = 256);

[SuGlider]

HardwareSerial::setRxBufferSize(size_t newSize) has been added and commited.