Prevents the buffer size from changing while the UART is active.

rowingdude · web-flow · commit 0fc9a55af21a · 2024-08-16T11:59:22.000-04:00
diff --git a/cores/esp32/HardwareSerial.cpp b/cores/esp32/HardwareSerial.cpp
@@ -522,8 +522,8 @@ bool HardwareSerial::setMode(SerialMode mode) {
 size_t HardwareSerial::setRxBufferSize(size_t new_size) {
 
   if (_uart) {
-    log_e("RX Buffer can't be resized when Serial is already running. Set it before calling begin().");
-    return 0;
+    log_e("RX Buffer can't be resized when Serial is already running. Call end() first.");
+    return _rxBufferSize;
   }
 
   if (new_size <= SOC_UART_FIFO_LEN) {

Original file line number	Diff line number	Diff line change
`@@ -522,8 +522,8 @@ bool HardwareSerial::setMode(SerialMode mode) {`
`522`	`522`	`size_t HardwareSerial::setRxBufferSize(size_t new_size) {`
`523`	`523`
`524`	`524`	`if (_uart) {`
`525`		`- log_e("RX Buffer can't be resized when Serial is already running. Set it before calling begin().");`
`526`		`- return 0;`
	`525`	`+ log_e("RX Buffer can't be resized when Serial is already running. Call end() first.");`
	`526`	`+ return _rxBufferSize;`
`527`	`527`	`}`
`528`	`528`
`529`	`529`	`if (new_size <= SOC_UART_FIFO_LEN) {`