Clear input queued while Pi was off

app/app_config.h

@@ -1,6 +1,6 @@
 #pragma once
 
 #define VERSION_MAJOR		3
-#define VERSION_MINOR		7
+#define VERSION_MINOR		8
 
 #define KEY_FIFO_SIZE		31       // number of keys in the public FIFO

app/pi.c

@@ -3,6 +3,7 @@
 #include "keyboard.h"
 #include "gpioexp.h"
 #include "backlight.h"
+#include "fifo.h"
 #include "hardware/adc.h"
 #include <hardware/pwm.h>
 
@@ -57,6 +58,9 @@ void pi_power_on(enum power_on_reason reason)
 	gpio_put(PIN_PI_PWR, 1);
 	g_pi_state = PI_STATE_ON;
 
+	// Clear any input queued while Pi was off
+	fifo_flush();
+
 	// LED green while booting until driver loaded
 	state.setting = LED_SET_ON;
 	state.r = 0;

app/reg.c

@@ -296,6 +296,9 @@ void reg_process_packet(uint8_t in_reg, uint8_t in_data, uint8_t *out_buffer, ui
 			// Driver loaded, cancel shutdown and power off
 			} else if (in_data) {
 				pi_cancel_power_alarms();
+
+				// Clear any input queued while driver was unloaded
+				fifo_flush();
 			}
 
 		} else {