DA14580 --- IIC通信

1.目的

     IIC通信，

2.分析

3.平台：

协议栈版本：DA1458x_SDK

编译软件：keil 5.20

硬件平台：开发板

例子：DA1458x_SDK5.0.3\DA1458x_SDK5.0.3\DA1458x_SDK\5.0.3\projects\target_apps\ble_examples\prox_reporter\Keil_4

4.步骤

     1.初始化 iic管脚

void set_pad_functions(void)        // set gpio port function mode
{
    
#if BLE_PROX_REPORTER
    #if USE_PUSH_BUTTON
    GPIO_ConfigurePin( GPIO_BUTTON_PORT, GPIO_BUTTON_PIN, INPUT_PULLUP, PID_GPIO, false ); // Push Button 
    #endif // USE_PUSH_BUTTON
    GPIO_ConfigurePin( GPIO_ALERT_LED_PORT, GPIO_ALERT_LED_PIN, OUTPUT, PID_GPIO, false ); //Alert LED
#endif
#if BLE_BAS_SERVER  && USE_BAT_LEVEL_ALERT
    GPIO_ConfigurePin( GPIO_BAT_LED_PORT, GPIO_BAT_LED_PIN, OUTPUT, PID_GPIO, false ); //Battery alert LED
#endif
    
#if (BLE_SPOTA_RECEIVER)   GPIO_ConfigurePin( SPI_EN_GPIO_PORT,  SPI_EN_GPIO_PIN,  OUTPUT, PID_SPI_EN, true );
    GPIO_ConfigurePin( SPI_CLK_GPIO_PORT, SPI_CLK_GPIO_PIN, OUTPUT, PID_SPI_CLK, false );
    GPIO_ConfigurePin( SPI_DO_GPIO_PORT,  SPI_DO_GPIO_PIN,  OUTPUT, PID_SPI_DO, false );
    GPIO_ConfigurePin( SPI_DI_GPIO_PORT,  SPI_DI_GPIO_PIN,  INPUT,  PID_SPI_DI, false );

    // Example GPIO configuration for an I2C EEPROM.
    //GPIO_ConfigurePin(GPIO_PORT_0, GPIO_PIN_2, INPUT, PID_I2C_SCL, false);
    //GPIO_ConfigurePin(GPIO_PORT_0, GPIO_PIN_3, INPUT, PID_I2C_SDA, false);
#endif//IIC³õʼ»¯ IIC串口初始化
    GPIO_ConfigurePin( GPIO_PORT_2,  GPIO_PIN_2,  INPUT_PULLUP,  PID_I2C_SCL, true );
    GPIO_ConfigurePin( GPIO_PORT_0,  GPIO_PIN_7,  INPUT_PULLUP,  PID_I2C_SDA, true );

	 
//´®¿Ú³õʼ»¯
    // Initialize UART component
//    SetBits16(CLK_PER_REG, UART2_ENABLE, 1);      // enable  clock for UART 2
//    uart2_init(UART2_BAUDRATE, UART2_DATALENGTH);
}

2.初始化Gsensor

void periph_init(void)  // set i2c, spi, uart, uart2 serial clks
{
	// Power up peripherals' power domain
    SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 0);
    while (!(GetWord16(SYS_STAT_REG) & PER_IS_UP)) ; 
    
    SetBits16(CLK_16M_REG, XTAL16_BIAS_SH_ENABLE, 1);
	
	//rom patch
	patch_func();	
	//Init pads
	set_pad_functions();


#if BLE_PROX_REPORTER
    app_proxr_port_reinit(GPIO_ALERT_LED_PORT, GPIO_ALERT_LED_PIN);
    #if USE_PUSH_BUTTON
    app_button_enable();
    #endif // USE_PUSH_BUTTON
#elif BLE_FINDME_LOCATOR   #if USE_PUSH_BUTTON
    app_button_enable();
    #endif // USE_PUSH_BUTTON
#endif //BLE_PROX_REPORTER
#if BLE_BATTERY_SERVER
    app_batt_port_reinit();
#endif //BLE_BATTERY_SERVER
 //gsensor ³õʼ»¯
 #define  IIC_GSENSOR_ADDRESS 0x4c    //定义IIC从机地址
       Set_IIC_Device_Address(IIC_GSENSOR_ADDRESS)
       mcube_device_init();   // Enable the pads
	SetBits16(SYS_CTRL_REG, PAD_LATCH_EN, 1);
}

3. void Set_IIC_Device_Address(uint8_t address)函数如下，设置IIC从机地址

void Set_IIC_Device_Address(uint8_t address)
{

    i2c_eeprom_init(address,I2C_FAST,I2C_7BIT_ADDR, I2C_1BYTE_ADDR);
}

4.IIc读求Gsensro的id号

 uint8_t data = 0;
void  Read_Gsensor_ID(void)
{
	 i2c_eeprom_read_data((uint8_t *)&data,(uint32_t)0x3b,(uint32_t)1)  ; 
}

5，实验结果如下