t1000e: light and temp sensor support

variants/t1000-e/t1000e_sensors.h

@@ -0,0 +1,8 @@
+#pragma once
+
+// Light and temperature sensors are on ADC ports
+// functions adapted from Seeed examples to get values 
+// see : https://github.com/Seeed-Studio/Seeed-Tracker-T1000-E-for-LoRaWAN-dev-board
+
+extern uint32_t t1000e_get_light();
+extern float t1000e_get_temperature();