https://github.com/rusefi/rusefi/issues/6781

revive MC33816 driver, also support bus sharing #6781

GDI-4ch/firmware/pt2001impl.h

@@ -12,6 +12,12 @@ public:
 	bool init();
 
 protected:
+	void spiAcquireBus() override {
+	}
+
+	void spiReleaseBus() override {
+	}
+
 	void select() override {
 		spiSelect(driver);
 	}
@@ -20,6 +26,9 @@ protected:
 		spiUnselect(driver);
 	}
 
+	bool errorOnUnexpectedFlag() override {
+	}
+
 	uint16_t sendRecv(uint16_t tx) override {
 		return spiPolledExchange(driver, tx);
 	}

ext/libfirmware

@@ -1 +1 @@
-Subproject commit 1d09376e770303aa9682b4683f26a4118d3705f4
+Subproject commit 1359a72f5630fa3a9042bc074edc8e1408bb1623