i2c_flag_get(I2Cx, I2C_FLAG_BTC)){if((I2C_Timeout--) == 0){Resume_IIC(I2C_LONG_TIMEOUT,I2Cx);return I2C_FAIL;}}i2c_data_transmit(I2Cx, (uint8_t)(start_Addr & 0x00FF)); }else{i2c_data_transmit(I2Cx, start_Addr);}I2C_Timeout = I2C_SHORT_TIMEOUT; while(!i2c_flag_get...
I2C总线是由数据线SDA和时钟线SCL构成的串行总线，可发送和接收数据。在GD32 MCU与被控IC（集成电路）...
I2C_Status I2Cx_Write_NBytes(uint32_t I2Cx,uint8_t driver_Addr, uint16_t start_Addr, uint8_t number_Bytes, uint8_t *write_Buffer,uint8_t ADDR_Length) { uint32_t I2C_Timeout = I2C_SHORT_TIMEOUT; i2c_ack_config(I2Cx,I2C_ACK_ENABLE); while(i2c_flag_get(I2Cx, I2C_FLAG_I2CBS...
i2c_data_transmit(I2C0, read_address); /* wait until BTC bit is set */ while(!i2c_flag_get(I2C0, I2C_FLAG_BTC)); delay_1ms(20); /* send a start condition to I2C bus */ i2c_start_on_bus(I2C0); /* wait until SBSEND bit is set */ while(!i2c_flag_get(I2C0, I2C_FLAG_...
《嵌入式 – GD32开发实战指南》第21章 I2C,I2C总线是PHLIPS公司推出的一种双线式半双工串行总线,是具备多主机系统所需的总线裁决
1. 检查while循环的条件判断是否正确。你的代码中使用了`while(!i2c_flag_get(I2C0, I2C_FLAG_BTC)...
void I2C_init(uint32_t I2Cx) { GPIO_Configuration_I2C(I2Cx); i2c_clock_config(I2Cx, 400000, I2C_DTCY_2); /* I2C address configure */ i2c_mode_addr_config(I2Cx, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, 0); /* enable acknowledge */ i2c_ack_config(I2Cx, I2C_ACK_DISABLE); /...
// i2c_dma_enable(I2C1, I2C_DMA_ON); } 四、IIC写函数 使用IIC与从设备通信的代码不是唯一不变的,这由从设备自身的内部寄存器寻址位数决定(有的从设备除了寄存器本身还有页操作)。 我们先来看看PCF8563这个芯片的数据手册中对其内部寄存器的描述:
/* send the internal register address to */i2c_data_transmit(I2C0, read_address); /* wait until BTC bit is set */ while(!i2c_flag_get(I2C0, I2C_FLAG_BTC); 一直卡在上面 请问什么原因?回答 +关注 10 4458人浏览 17人回答问题 举报 ...
i2c_ack_config(I2C0,I2C_ACK_ENABLE); } ③读寄存器操作: void I2C0_Register_Read(uint8_t* B_buffer, uint8_t read_address,uint16_t number_of_byte) { /* wait until I2C bus is idle */ while(i2c_flag_get(I2C0, I2C_FLAG_I2CBSY)); ...