SysCtlClockSet(SYSCTL_SYSDIV_4|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ| SYSCTL_OSC_MAIN); SysCtlPeripheralEnable( SYSCTL_PERIPH_I2C0 ); SysCtlPeripheralEnable( SYSCTL_PERIPH_GPIOB ); //配置相应控制端口 GPIOPinConfigure( GPIO_PB3_I2C0SDA ); GPIOPinConfigure( GPIO_PB2_I2C0SCL ); GPIOPinTypeI2CSCL( GPIO_PORTB_BASE, GPIO_PIN_2 ); GPIOPinTypeI2C( GPIO_PORTB_BASE, GPIO_PIN_3 ); //设置I2C模块传输速率,并使能主机控制功能 I2CMasterInitExpClk( I2C0_BASE, SysCtlClockGet(), false ); I2CMasterEnable( I2C0_BASE ); // // Enable and configure the GPIO port for the LED operation. // SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF); GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED); I2CMasterSlaveAddrSet( I2C0_BASE, 0x50, false); I2CMasterDataPut( I2C0_BASE, 0x00 ); //写入主机数据(寄存器地址) while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); I2CMasterControl( I2C0_BASE, I2C_MASTER_CMD_BURST_SEND_START ); //主机数据开始传输 while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); I2CMasterDataPut( I2C0_BASE, 0x06 ); //写入主机数据(寄存器内容) while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); I2CMasterControl( I2C0_BASE, I2C_MASTER_CMD_SINGLE_SEND ); //主机数据+stop传输 while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); I2CMasterSlaveAddrSet( I2C0_BASE, 0x50, false); //????′?ê?·??ò?a?÷?úD′ I2CMasterDataPut( I2C0_BASE, 0x20 ); //D′è??÷?úêy?Y(êy?Y??′??÷μ??·) while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); I2CMasterControl( I2C0_BASE, I2C_MASTER_CMD_SINGLE_SEND ); while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); // // Loop Forever // while(1) { // // Turn on the LED // GPIOPinWrite(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED, RED_LED); I2CMasterSlaveAddrSet( I2C0_BASE, 0x50, true); I2CMasterControl( I2C0_BASE, I2C_MASTER_CMD_SINGLE_RECEIVE ); //μ¥′??óê? while( I2CMasterErr(I2C0_BASE) | I2CMasterBusy(I2C0_BASE) ); Result_H = I2CMasterDataGet( I2C0_BASE ); // // Delay for a bit // SysCtlDelay(2000000); // // Turn on the LED // GPIOPinWrite(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED, BLUE_LED); // // Delay for a bit // SysCtlDelay(2000000); }
可以读其他的,就是不能读写AT24C01,好奇怪