STM32 F1: move F1 to I2C common code

Now that F1 HAL has been updated to support required APIs,
the F1 family can also be moved to common code.

Author: LMESTM

targets/TARGET_STM/TARGET_STM32F1/TARGET_BLUEPILL_F103C8/objects.h

@@ -60,11 +60,6 @@ struct analogin_s {
     uint8_t channel;
 };
 
-struct i2c_s {
-    I2CName  i2c;
-    uint32_t slave;
-};
-
 struct can_s {
     CANName can;
     int index;

targets/TARGET_STM/TARGET_STM32F1/TARGET_DISCO_F100RB/objects.h

@@ -60,11 +60,6 @@ struct analogin_s {
     uint8_t channel;
 };
 
-struct i2c_s {
-    I2CName  i2c;
-    uint32_t slave;
-};
-
 #include "common_objects.h"
 #include "gpio_object.h"
 

targets/TARGET_STM/TARGET_STM32F1/TARGET_NUCLEO_F103RB/objects.h

@@ -60,11 +60,6 @@ struct analogin_s {
     uint8_t channel;
 };
 
-struct i2c_s {
-    I2CName  i2c;
-    uint32_t slave;
-};
-
 struct can_s {
     CANName can;
     int index;

targets/TARGET_STM/TARGET_STM32F1/common_objects.h

@@ -82,6 +82,34 @@ struct spi_s {
 #endif
 };
 
+struct i2c_s {
+    /*  The 1st 2 members I2CName i2c
+     *  and I2C_HandleTypeDef handle should
+     *  be kept as the first members of this struct
+     *  to ensure i2c_get_obj to work as expected
+     */
+    I2CName  i2c;
+    I2C_HandleTypeDef handle;
+    uint8_t index;
+    int hz;
+    PinName sda;
+    PinName scl;
+    IRQn_Type event_i2cIRQ;
+    IRQn_Type error_i2cIRQ;
+    uint32_t XferOperation;
+    volatile uint8_t event;
+#if DEVICE_I2CSLAVE
+    uint8_t slave;
+    volatile uint8_t pending_slave_tx_master_rx;
+    volatile uint8_t pending_slave_rx_maxter_tx;
+#endif
+#if DEVICE_I2C_ASYNCH
+    uint32_t address;
+    uint8_t stop;
+    uint8_t available_events;
+#endif
+};
+
 #include "gpio_object.h"
 
 #ifdef __cplusplus