diff --git a/digital-inputs/firmware/can.cpp b/digital-inputs/firmware/can.cpp
index bb84619..dccc3a0 100644
--- a/digital-inputs/firmware/can.cpp
+++ b/digital-inputs/firmware/can.cpp
@@ -3,6 +3,7 @@
 #include "chprintf.h"
 #include "io_pins.h"
 #include "can.h"
+#include "test_logic.h"
 #include "../../ext/libfirmware/can/can_common.h"
 
 
diff --git a/digital-inputs/firmware/main.cpp b/digital-inputs/firmware/main.cpp
index 4796bb5..fd6c6ea 100644
--- a/digital-inputs/firmware/main.cpp
+++ b/digital-inputs/firmware/main.cpp
@@ -34,6 +34,7 @@
 #include "can.h"
 
 BaseSequentialStream *chp = (BaseSequentialStream *)&EFI_CONSOLE_USB_DEVICE;
+extern bool isGoodCanPackets;
 
 /*
  * This is a periodic thread that does absolutely nothing except flashing
@@ -72,7 +73,7 @@ static void ConsoleThread(void*) {
 	while (true) {
 		bool isGoodDigitalOutputs = testEcuDigitalOutputs();
 		bool isGoodDititalInputs = testEcuDigitalInputs();
-		bool isAllGood = isGoodDigitalOutputs && isGoodDititalInputs;
+		bool isAllGood = isGoodDigitalOutputs && isGoodDititalInputs && isGoodCanPackets;
 
 		executionCounter++;
 
diff --git a/digital-inputs/firmware/test_logic.cpp b/digital-inputs/firmware/test_logic.cpp
index 96e22a6..3ecc6af 100644
--- a/digital-inputs/firmware/test_logic.cpp
+++ b/digital-inputs/firmware/test_logic.cpp
@@ -13,6 +13,27 @@ bool haveSeenHigh[COUNT];
 
 int cycleDurationMs = 1;
 int cycleCount = 2500;
+bool isGoodCanPackets = true;
+
+BoardConfig boardConfigs[NUM_BOARD_CONFIGS] = {
+	{
+		"Hellen-Honda125K",
+		206,
+		{
+			{ "TPS1_1", 1.0f, 0.5f * ANALOG_L, 0.5f * ANALOG_H },
+			{ nullptr, 0, 0, 0 },
+			{ nullptr, 0, 0, 0 },
+			{ nullptr, 0, 0, 0 },
+			{ "MAP", 1.0f, 0.6f * ANALOG_L, 0.6f * ANALOG_H },
+			{ "CLT", 1.0f, CLT_VALUE * ANALOG_L, CLT_VALUE * ANALOG_H },
+			{ "IAT", 1.0f, IAT_VALUE * ANALOG_L, IAT_VALUE * ANALOG_H },
+			{ "BATT", 5.835f, 9.0f, 15.0f },
+
+		}
+	},
+};
+
+BoardConfig *currentBoard = nullptr;
 
 bool testEcuDigitalOutput(int testLineIndex) {
 	memset(haveSeenLow, 0, sizeof(haveSeenLow));
@@ -50,3 +71,12 @@ bool testEcuDigitalOutput(int testLineIndex) {
 	// test is successful if we saw state toggle
 	return isGood;
 }
+
+void canPacketError(const char *msg, ...) {
+	va_list vl;
+	va_start(vl, msg);
+	chvprintf(chp, msg, vl);
+	va_end(vl);
+
+	isGoodCanPackets = false;
+}
diff --git a/digital-inputs/firmware/test_logic.h b/digital-inputs/firmware/test_logic.h
index d363f6e..8c0b129 100644
--- a/digital-inputs/firmware/test_logic.h
+++ b/digital-inputs/firmware/test_logic.h
@@ -3,6 +3,27 @@
 
 #include "cstring"
 
-bool testEcuDigitalOutput(int testLineIndex);
-
+#define MAX_ANALOG_CHANNELS 8
 #define index2human(x) ((x) + 1)
+
+bool testEcuDigitalOutput(int testLineIndex);
+void canPacketError(const char *msg, ...);
+
+class AnalogChannelConfig {
+public:
+	const char *name;
+	float mulCoef;	// equal to 'dividerCoef' from the firmware
+	float acceptMin, acceptMax;
+};
+
+class BoardConfig {
+public:
+	const char *boardName;
+	int boardId;
+	AnalogChannelConfig channels[MAX_ANALOG_CHANNELS];
+};
+
+#define NUM_BOARD_CONFIGS 1
+extern BoardConfig boardConfigs[NUM_BOARD_CONFIGS];
+
+extern BoardConfig *currentBoard;
diff --git a/ext/libfirmware b/ext/libfirmware
index 18f8eb4..f9df8eb 160000
--- a/ext/libfirmware
+++ b/ext/libfirmware
@@ -1 +1 @@
-Subproject commit 18f8eb417411725108dd9bf54a3f9361715b8f9f
+Subproject commit f9df8eb28db78fd91c28e86adb4027fba79255a9