Stupid mistake: macros couldn't be set this way

ampel-firmware/config.public.h

@@ -119,21 +119,23 @@
  */
 
 // 1) Requires "MCCI LoRaWAN LMIC library", which will be automatically used with PlatformIO but should be added in "Arduino IDE".
-// 2) If you need to, region and transceiver type can be specified in lorawan.cpp. Default is "Europe 868"
+// 2) Region and transceiver type should be specified in:
+//     * Arduino/libraries/MCCI_LoRaWAN_LMIC_library/project_config/lmic_project_config.h for Arduino IDE
+//     * platformio.ini for PlatformIO
+//    See https://github.com/mcci-catena/arduino-lmic#configuration for more information
 // 3) It has been tested with "TTGO ESP32 SX1276 LoRa 868" and will only work with an ESP32 + LoRa modem
 // 4) In order to use LoRaWAN, a gateway should be close to the co2ampel, and an account, an application and a device should be registered,
-//      e.g. on https://www.thethingsnetwork.org/docs/applications/
+//      e.g. on https://www.thethingsindustries.com/docs/integrations/
 // 5) The corresponding keys should be defined in LORAWAN_DEVICE_EUI, LORAWAN_APPLICATION_EUI and LORAWAN_APPLICATION_KEY
 // How often should measurements be sent over LoRaWAN?
 #  define LORAWAN_SENDING_INTERVAL 300 // [s] This value should not be too low. See https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html#maximum-duty-cycle
 
-// WARNING: If AMPEL_LORAWAN is enabled, you need to modify the 3 following constants!
+// WARNING: If AMPEL_LORAWAN is true, you need to modify the 3 following constants!
 // This EUI must be in little-endian format, so least-significant-byte first.
 // When copying an EUI from ttnctl output, this means to reverse the bytes.
 #  define LORAWAN_DEVICE_EUI      {0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11}
 // This should also be in little endian format, see above.
-// For TheThingsNetwork issued EUIs the last bytes should be 0xD5, 0xB3, 0x70.
-#  define LORAWAN_APPLICATION_EUI {0x00, 0x00, 0x00, 0x00, 0x00, 0xD5, 0xB3, 0x70}
+#  define LORAWAN_APPLICATION_EUI {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
 // This key should be in big endian format (or, since it is not really a
 // number but a block of memory, endianness does not really apply). In
 // practice, a key taken from ttnctl can be copied as-is.

ampel-firmware/lorawan.cpp

@@ -9,13 +9,6 @@
 #include "util.h"
 #include "ntp.h"
 
-/*** Define region and transceiver type, and ignore lmic_project_config.h from lmic library ***/
-// Those values are probably okay if you're in Europe.
-#define ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS
-#define CFG_eu868 1
-#define CFG_sx1276_radio 1
-/****************************************************************************************/
-
 // Requires "MCCI LoRaWAN LMIC library", which will be automatically used with PlatformIO but should be added in "Arduino IDE"
 // Tested successfully with v3.2.0 and connected to a thethingsnetwork.org app.
 #include <lmic.h>

platformio.ini

@@ -20,6 +20,8 @@ lib_deps =
     EEPROM
     DNSServer
     prampec/IotWebConf@^3.2.0
+;build_flags =
+;   -D IOTWEBCONF_DEBUG_DISABLED
 
 [env:esp32]
 platform = espressif32
@@ -31,3 +33,7 @@ lib_deps =
     EEPROM
     DNSServer
     prampec/IotWebConf@^3.2.0
+build_flags =
+    -D ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS
+    -D CFG_eu868=1
+    -D CFG_sx1276_radio=1