Inky Frame: Add wakeup SR to lib, fix wakeup bug.

micropython/modules/wakeup/wakeup.cpp

@@ -41,10 +41,10 @@ namespace {
 
                 uint8_t state = 0u;
                 for(auto i = 0u; i < 8; i++) {
+                    gpio_put(WAKEUP_SHIFT_REG_CLK, true);
                     if(gpio_get(WAKEUP_SHIFT_REG_DATA)) {
                         state |= (0b1 << i);
                     }
-                    gpio_put(WAKEUP_SHIFT_REG_CLK, true);
                     gpio_put(WAKEUP_SHIFT_REG_CLK, false);
                 }
                 shift_register_state = state;

micropython/modules_py/inky_frame.py

@@ -1,5 +1,6 @@
 from pimoroni import ShiftRegister
 from machine import Pin
+from wakeup import get_shift_state
 import time
 
 
@@ -13,10 +14,13 @@ LED_C = 13
 LED_D = 14
 LED_E = 15
 
+SHIFT_STATE = get_shift_state()
+
 
 class Button:
     def __init__(self, sr, idx, led, debounce=50):
         self.sr = sr
+        self.startup_state = bool(SHIFT_STATE & (1 << idx))
         self.led = Pin(led, Pin.OUT)  # LEDs are just regular IOs
         self.led.off()
         self._idx = idx
@@ -33,6 +37,9 @@ class Button:
         return False
 
     def raw(self):
+        if self.startup_state:
+            self.startup_state = False
+            return True
         return self.sr[self._idx] == 1
 
     @property