define ESP32PinsSD as static

Author: pschatzmann

src/Driver/es8388/es8388.c

@@ -416,7 +416,7 @@ error_t es8388_set_voice_volume(int volume) {
   // DAC LDACVOL RDACVOL default 0 = 0DB; Default value 192 = – -96 dB
   res = es_write_reg(ES8388_ADDR, ES8388_DACCONTROL4, 0);
   res |= es_write_reg(ES8388_ADDR, ES8388_DACCONTROL5, 0);
-  // LOUT1 RLOUT1 volume: dataheet says only 6 bits
+  // LOUT1 LOUT1 volume: dataheet says only 6 bits
   res |= es_write_reg(ES8388_ADDR, ES8388_DACCONTROL24, volume);
   res |= es_write_reg(ES8388_ADDR, ES8388_DACCONTROL25, volume);
   // LOUT2 ROUT2 volume: datasheet says only 6 bits

src/DriverPins.h

@@ -142,7 +142,7 @@ struct PinsSPI {
 /**
  * @brief Default SPI pins for ESP32 Lyrat, AudioDriver etc
  */
-PinsSPI ESP32PinsSD{PinFunction::SD, 14, 2, 15, 13, SPI};
+static PinsSPI ESP32PinsSD{PinFunction::SD, 14, 2, 15, 13, SPI};
 
 /**
  * @brief I2C pins