更新支持MINI-G5库，及修复HX720负数转换问题

boards/default_src/micropython_esp32c2/origin/build/lib/mini_g5.py

@@ -0,0 +1,30 @@
+"""
+MINI G5 -MixGo MINI EXT G5
+
+MicroPython library for the MINI G5 (Expansion board for MixGo MINI)
+=======================================================
+@dahanzimin From the Mixly Team
+"""
+
+import gc
+from machine import Pin, SoftI2C
+
+'''i2c-extboard'''
+ext_i2c = SoftI2C(scl=Pin(7), sda=Pin(8), freq=400000)
+
+'''RFID_Sensor'''
+try :
+    import rc522
+    ext_rfid = rc522.RC522(ext_i2c)     
+except Exception as e:
+    print("Warning: Failed to communicate with SI522A (RFID) or",e)
+
+'''ASR_Sensor'''
+try :
+    import ci130x
+    ext_asr = ci130x.CI130X(ext_i2c)     
+except Exception as e:
+    print("Warning: Failed to communicate with CI130X (ASR) or",e)
+
+'''Reclaim memory'''
+gc.collect()