STM32 problem with gyro L3G4200D

[KD�?b]

Hello

I am using STM32F100C4T6B and i want to read information from my module GY-50 L3G4200D using I2C and sending it by uart to my computer. I can not do it by SWD. Im using STM32CubeMX and System Workbench for STM32. I know for sure that communication by UART works because i tested it but i cant get any info from my gyro. I am pretty sure everything is connected as it should be. I do not know what to do. Please help me. Here is a part of my code

#define L3G4200D_ACC_ADDRESS (0x69 << 1) // adres akcelerometru
 // adres akcelerometru
#define L3G4200D_ACC_CTRL_REG1 0x20 // rejestr ustawien 1
#define L3G4200D_ACC_CTRL_REG4 0x23 // rejestr ustawien 1
#define WHO_AM_I 0x0F
#define L3G4200D_ACC_Z_H_A 0x2D // starszy bajt danych osi z
//CTRL_REG1 = [DR1][DR0][BW1][BW0][PD][Zen][Yen][Xen]
 
// Maski bitowe
#define L3G4200D_ACC_100HZ 0x0F
#define L3G4200D_ACC_DPS 0x20
 
 
// Zmienne
uint8_t Data=0;
int8_t Zaxis =0;
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */
 
/* USER CODE END PFP */
 
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/*void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
 
	static uint16_t cnt = 0; //Licznik wysylanych wiadomosci
	uint8_t data [50];//Tablica przechowujaca wysylana wiadomosc
	uint16_t size = 0;//Rozmiar wysylanej wiadomosci
 
	++cnt; // Zwiekszenia licznika wysylanych wiadomosci
	size = sprintf(data, "Liczba wysylanych wiadomosc: %d.\n\r", cnt); // Stworzenie wiadomosci do
	 wyslania oraz przypisanie ilosci wysylanych znakow do zmiennej size
	HAL_UART_Transmit_IT(&huart1, data, size);// Rozpoczecie nadawania danych z wykorzystaniem przerwan
 
 
 
}*/
/* USER CODE END 0 */
 
/**
 * @brief The application entry point.
 * @retval int
 */
int main(void)
{
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
 
 /* MCU Configuration--------------------------------------------------------*/
 
 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
 HAL_Init();
 
 /* USER CODE BEGIN Init */
 
 /* USER CODE END Init */
 
 /* Configure the system clock */
 SystemClock_Config();
 
 /* USER CODE BEGIN SysInit */
 
 /* USER CODE END SysInit */
 
 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 MX_I2C1_Init();
 MX_USART1_UART_Init();
 /* USER CODE BEGIN 2 */
 
 uint8_t Settings = L3G4200D_ACC_100HZ;
 uint8_t Settings1 = L3G4200D_ACC_DPS;
 HAL_I2C_Mem_Write(&hi2c1, L3G4200D_ACC_ADDRESS, L3G4200D_ACC_CTRL_REG1, 1, &Settings, 1, 100);
 HAL_I2C_Mem_Write(&hi2c1, L3G4200D_ACC_ADDRESS, L3G4200D_ACC_CTRL_REG4, 1, &Settings1, 1, 100);
 
 
 /* USER CODE END 2 */
 
 /* Infinite loop */
 /* USER CODE BEGIN WHILE */
 while (1)
 {
 /* USER CODE END WHILE */
 
 /* USER CODE BEGIN 3 */
	 HAL_I2C_Mem_Read(&hi2c1, L3G4200D_ACC_ADDRESS, L3G4200D_ACC_Z_H_A , 1, &Data, 1, 100);
	 	 	 Zaxis = Data << 8;
	 		uint8_t data1 [50];//Tablica przechowujaca wysylana wiadomosc
	 		uint16_t size = 0;//Rozmiar wysylanej wiadomosci
	 		size = sprintf(data1, "Odczyt Z: %d.\n\r", Zaxis); // Stworzenie wiadomosci do
 
	 			HAL_UART_Transmit_IT(&huart1, data1, size);// Rozpoczecie nadawania danych z wykorzystaniem przerwan
 /* USER CODE END 3 */
}
}