led change

README-I2S.md

@@ -4,6 +4,12 @@ Connect [Broadcom pin GPIO 21 / pin 40 on the Pi header](https://pinout.xyz/pino
 
 ### Software
 
+#### 0. Install pyalsaaudio
+
+```
+sudo apt-get install python3-alsaaudio
+```
+
 #### 1. Compile the device tree overlay
 ```sh
 cd tx/i2smaster/

tx/radio_wrappers.py

@@ -228,7 +228,7 @@ class RFM98W_Serial(RFM98W):
         
         self.serial_port = serial_port
 
-        super().__init__(spidevice,frequency,baudrate,tx_power_dbm,reinit_count)
+        super().__init__(spidevice,frequency,baudrate,tx_power_dbm,reinit_count,led=5)
         self.start()