// project-specific definitions for otaa sensor
//#define CFG_eu868 1
//#define CFG_us915 1
//#define CFG_au921 1
#define CFG_as923 1
#define LMIC_COUNTRY_CODE   LMIC_COUNTRY_CODE_JP
//#define CFG_in866 1
#define CFG_sx1276_radio 1
//#define LMIC_USE_INTERRUPTS

// project-specific definitions for otaa sensor
//#define CFG_eu868 1
//#define CFG_us915 1
//#define CFG_au921 1
#define CFG_as923 1
#define LMIC_COUNTRY_CODE   LMIC_COUNTRY_CODE_JP
//#define CFG_in866 1
#define CFG_sx1276_radio 1
//#define LMIC_USE_INTERRUPTS
#define LMIC_DEBUG_LEVEL 2
#define LMIC_DEBUG_PRINTF_FN lmic_printf

Set debug level to 2 and use a suitable printf function
Set debug level to 2 and use a suitable printf function
