Update read_keys impl

read_keys.py

@@ -10,19 +10,16 @@ addr = 0x28
 
 def read(reg):
     v = i2c.read_byte_data(addr, reg)
-    print(f"Read b {reg:#04x} = {v:#04x}")
     return v
 
 
 def readw(reg):
     v = i2c.read_word_data(addr, reg)
-    #print(f"Read w {reg:#04x} = {v:#06x}")
     return v & 0x00ff, (v & 0xff00) >> 8
 
 
 def write(reg, v):
     i2c.write_byte_data(addr, reg, v)
-    print(f"Write b {reg:#04x} = {v:#06x}")
 
 
 def setup():
@@ -51,6 +48,51 @@ def setup():
     write(0x82, 0x03)
 
 
+def setup_simple():
+    """Simplified sequence without redundant calls"""
+
+    print('Waiting the MCU to get ready')
+
+    st = read(0x00)
+    while st & 0x40 != 0:
+        print('.', end='')
+        st = read(0x00)
+        time.sleep(0.1)
+
+    working = read(0x0a) & 0x01 > 0
+    if working:
+        print('MCU is working')
+    else:
+        print('MCU is suspended')
+
+    event = read(0x01) & 0x20 > 0
+    if event:
+        print('Event is enabled')
+    else:
+        print('Event is disabled')
+
+    v = read(0x40)
+    print(f'Reg (R) 0x40 -> {v:#04x}')
+
+    read(0x41)
+    print(f'Reg (R) 0x41 -> {v:#04x}')
+
+    read(0x48)
+    print(f'Reg (R) 0x48 -> {v:#04x}')
+
+    write(0x88, 0x08)
+    print('Reg (W) 0x88 = 0x08')
+
+    write(0x82, 0x05)
+    print('Reg (W) 0x82 = 0x05')
+
+    write(0x82, 0x02)
+    print('Reg (W) 0x82 = 0x02')
+
+    write(0x82, 0x03)
+    print('Reg (W) 0x82 = 0x03')
+
+
 def read_keys():
     keys = []
     n, key = readw(0x04)
@@ -59,12 +101,10 @@ def read_keys():
 
     keys.append(key)
 
-    additional = n // 2
-    for i in range(additional):
+    if n >= 1:
         k1, k2 = readw(0x04)
-        keys.append(k1)
-        if i == additional-1 and n % 2 == 1:
-            keys.append(k2)
+        keys = keys + [k1, k2]
+        keys = keys[:n]
 
     print(f"N = {n:#04x}")
 
@@ -72,7 +112,7 @@ def read_keys():
     print(f"Keys = {', '.join(keys)}")
 
 
-setup()
+setup_simple()
 while True:
     time.sleep(0.1)
     read_keys()