I2C_Init(I2C1, &I2C_InitStructure); I2C_ITConfig( I2C1, I2C_IT_RD_REQ, ENABLE );//Read request I2C_ITConfig( I2C1, I2C_IT_RX_FULL, ENABLE );//Receive interrupt I2C_SendSlaveAddress(I2C1, 0xA8); I2C1->SLVMASK = 0x0F; I2C_Cmd(I2C1, ENABLE); } s32 main(void) { CONSOLE_Init...
现在市面上很多MCU的I2C从机模式都支持多地址模式,但每家的IP功能设计都不一样:有些是直接通过寄存器设置从机地址方式,这种方式限制了所支持从机地址的个数;有些是通过地址掩码的方式(类似于CAN通讯的ID滤波器),通过逐位比较的方式来判别所支持的I2C从机地址,这种方式可以支持很多个从机地址;第二种方式相比于第...
运行 1516input wire clk,//系统时钟 17 input wire rst ,//系统复位 18 input wire wr_req ,//写请求信号 19 input wire rd_req ,//读请求信号 20 input wire start ,//一次读写开始信号 21 input wire [7:0] dev_addr,//设备地址 22 input wire [7:0] mem_addr,//寄存器地址 23 input wire...
I2C 总线上的每一个设备都可以作为主设备或者从设备,而且每一个设备都会对应一个唯一的地址(可以从 I2C 器件数据手册得知),主从设备之间就是通过这个地址来确定与哪个器件进行通信。本次实验我们把 FPGA 作为主设备,把挂载在总线上的其他设备(ADV7513)作为从设备。I2C 总线数据传输速率在标准模式下可达 100kbit/s,...
1structi2c_driver { // 代表一个i2c设备驱动2 unsignedintclass;//i2c设备驱动所支持的i2c设备的类型34/*Notifies the driver that a new bus has appeared or is about to be5* removed. You should avoid using this if you can, it will probably6* be removed in a near future.7*/8int (*attach...
(&i2c->wait); // 初始化工作队列 30 31 /* find the clock and enable it */ 32 33 i2c->dev = &pdev->dev; // 通过s3c24xx_i2c->dev 指针指向平台设备的device结构体 34 i2c->clk = clk_get(&pdev->dev, "i2c"); 35 36 if (IS_ERR(i2c->clk)) { 37 dev_err(&pdev->dev, "...
else if ((status & QUP_STATE_MASK) == req_state) return 0; } if (retries++ == 1000) udelay(100); } return -ETIMEDOUT; } static int qup_update_state(struct qup_i2c_dev *dev, uint32_t state) { if (qup_i2c_poll_state(dev, 0, true) != 0) ...
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initPrms.isI2cInitReq = FALSE; initPrms.isI2cProbingReq = FALSE; status = Vps_platformDeviceInit(&initPrms); Dear Yogesh, I checked the log messages: [m3video] 606: SYSTEM : ISS Init in progress DONE !!! [m3vpss ] initPrms.isI2cInitReq = 0 ...
parameterIC_TX_OVER_INTR_ID=2;parameterIC_TX_ABRT_INTR_ID=3;parameterIC_RX_DONE_INTR_ID=4;parameterIC_TX_EMPTY_INTR_ID=5;parameterIC_ACTIVITY_INTR_ID=6;parameterIC_STOP_DET_INTR_ID=7;parameterIC_START_DET_INTR_ID=8;parameterIC_RD_REQ_INTR_ID=9;parameterIC_RX_FULL_INTR_ID=10;...