1 files changed, 49 insertions, 0 deletions
diff --git a/firmware/targets/f7/furi-hal/furi-hal-i2c-types.h b/firmware/targets/f7/furi-hal/furi-hal-i2c-types.h
new file mode 100644
index 00000000..4f7aab91
--- /dev/null
+++ b/firmware/targets/f7/furi-hal/furi-hal-i2c-types.h
@@ -0,0 +1,49 @@
+#pragma once
+
+#include <stm32wbxx_ll_i2c.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct FuriHalI2cBus FuriHalI2cBus;
+typedef struct FuriHalI2cBusHandle FuriHalI2cBusHandle;
+
+/** FuriHal i2c bus states */
+typedef enum {
+    FuriHalI2cBusEventInit, /**< Bus initialization event, called on system start */
+    FuriHalI2cBusEventDeinit, /**< Bus deinitialization event, called on system stop */
+    FuriHalI2cBusEventLock, /**< Bus lock event, called before activation */
+    FuriHalI2cBusEventUnlock, /**< Bus unlock event, called after deactivation */
+    FuriHalI2cBusEventActivate, /**< Bus activation event, called before handle activation */
+    FuriHalI2cBusEventDeactivate, /**< Bus deactivation event, called after handle deactivation  */
+} FuriHalI2cBusEvent;
+
+/** FuriHal i2c bus event callback */
+typedef void (*FuriHalI2cBusEventCallback)(FuriHalI2cBus* bus, FuriHalI2cBusEvent event);
+
+/** FuriHal i2c bus */
+struct FuriHalI2cBus {
+    I2C_TypeDef* i2c;
+    FuriHalI2cBusHandle* current_handle;
+    FuriHalI2cBusEventCallback callback;
+};
+
+/** FuriHal i2c handle states */
+typedef enum {
+    FuriHalI2cBusHandleEventActivate, /**< Handle activate: connect gpio and apply bus config */
+    FuriHalI2cBusHandleEventDeactivate, /**< Handle deactivate: disconnect gpio and reset bus config */
+} FuriHalI2cBusHandleEvent;
+
+/** FuriHal i2c handle event callback */
+typedef void (*FuriHalI2cBusHandleEventCallback)(FuriHalI2cBusHandle* handle, FuriHalI2cBusHandleEvent event);
+
+/** FuriHal i2c handle */
+struct FuriHalI2cBusHandle {
+    FuriHalI2cBus* bus;
+    FuriHalI2cBusHandleEventCallback callback;
+};
+
+#ifdef __cplusplus
+}
+#endif
+\ No newline at end of file