Return acheived baud rate from begin function

Author: ngist

cores/rp2040/SerialUART.cpp

@@ -239,7 +239,7 @@ void SerialUART::begin(unsigned long baud, uint16_t config) {
         gpio_set_inover(_cts, _invertControl ? 1 : 0);
     }
 
-    uart_init(_uart, baud);
+    int achieved_baud = uart_init(_uart, baud);
     int bits, stop;
     uart_parity_t parity;
     switch (config & SERIAL_PARITY_MASK) {
@@ -295,6 +295,7 @@ void SerialUART::begin(unsigned long baud, uint16_t config) {
     }
     _break = false;
     _running = true;
+    return achieved_baud;
 }
 
 void SerialUART::end() {

cores/rp2040/SerialUART.h

@@ -64,10 +64,10 @@ class SerialUART : public arduino::HardwareSerial {
     bool setFIFOSize(size_t size);
     bool setPollingMode(bool mode = true);
 
-    void begin(unsigned long baud = 115200) override {
-        begin(baud, SERIAL_8N1);
+    int begin(unsigned long baud = 115200) override {
+        return begin(baud, SERIAL_8N1);
     };
-    void begin(unsigned long baud, uint16_t config) override;
+    int begin(unsigned long baud, uint16_t config) override;
     void end() override;
 
     virtual int peek() override;