log missed exti events (#4473)

* log missed exti events

* units

* s

* guard

* stub for non stm32

firmware/console/binary/output_channels.txt

@@ -343,5 +343,7 @@ uint16_t rpmAcceleration;dRPM;"RPM/s",1, 0, 0, 5, 0
 
 	int16_t autoscale rawBattery;;"V",{1/@@PACK_MULT_VOLTAGE@@}, 0, 0, 5, 3
 
-	uint8_t[160 iterate] unusedAtTheEnd;;"",1, 0, 0, 0, 0
+	uint8_t extiOverflowCount;;"", 1, 0, 0, 255, 0
+
+	uint8_t[159 iterate] unusedAtTheEnd;;"",1, 0, 0, 0, 0
 end_struct

firmware/console/status_loop.cpp

@@ -54,6 +54,7 @@
 #include "buffered_writer.h"
 #include "dynoview.h"
 #include "frequency_sensor.h"
+#include "digital_input_exti.h"
 
 extern bool main_loop_started;
 
@@ -846,6 +847,9 @@ void updateTunerStudioState() {
 	tsOutputChannels->triggerVvtFall = engine->triggerCentral.vvtEventFallCounter[0];
 #endif // EFI_SHAFT_POSITION_INPUT
 
+#if HAL_USE_PAL && EFI_PROD_CODE
+	tsOutputChannels->extiOverflowCount = getExtiOverflowCounter();
+#endif
 
 	switch (engineConfiguration->debugMode)	{
 	case DBG_TPS_ACCEL:

firmware/hw_layer/digital_input/digital_input_exti.cpp

@@ -161,6 +161,8 @@ private:
 
 static ExtiQueue<ExtiQueueEntry, 32> queue;
 
+static uint8_t overflowCounter = 0;
+
 CH_IRQ_HANDLER(STM32_I2C1_EVENT_HANDLER) {
 	OSAL_IRQ_PROLOGUE();
 
@@ -185,12 +187,18 @@ CH_IRQ_HANDLER(STM32_I2C1_EVENT_HANDLER) {
 			if (channel.Name) {
 				channel.Callback(channel.CallbackData, timestamp);
 			}
+		} else {
+			overflowCounter++;
 		}
 	}
 
 	OSAL_IRQ_EPILOGUE();
 }
 
+uint8_t getExtiOverflowCounter() {
+	return overflowCounter;
+}
+
 void handleExtiIsr(uint8_t index) {
 	// No need to lock anything, we're already the highest-pri interrupt!
 
@@ -251,6 +259,10 @@ void efiExtiInit() {
 void efiExtiEnablePin(const char *, brain_pin_e, uint32_t, ExtiCallback, void *) { }
 void efiExtiDisablePin(brain_pin_e) { }
 
+uint8_t getExtiOverflowCounter() {
+	return 0;
+}
+
 #endif
 
 #endif /* HAL_USE_PAL && EFI_PROD_CODE */

firmware/hw_layer/digital_input/digital_input_exti.h

@@ -14,4 +14,5 @@ using ExtiCallback = void(*)(void*, efitick_t);
 void efiExtiInit();
 void efiExtiEnablePin(const char *msg, brain_pin_e pin, uint32_t mode, ExtiCallback cb, void *cb_data);
 void efiExtiDisablePin(brain_pin_e brainPin);
+uint8_t getExtiOverflowCounter();
 #endif /* HAL_USE_PAL */