没理解您的意思，我之前理解I2C_MASTER_CMD_BURST_RECEIVE_START就是接收命令的意思，还要设置什么指令吗 这个是我想要连续读取的代码但是，I2c处于busy状态，不知道为什么。不
//build the i2c transfer.rc = i2c_master_start(m_i2c_cmd);if(rc != ESP_OK) {memReport(); s =getDevName(devAddr);ESP_LOGE(TAG,"readReg(): error\"%s\"calling i2c_master_start (1) on %s, register 0x%x.",esp_err_to_name(rc), s.c_str(), regAddr);continue; } rc = i2c_...
cmd = i2c_cmd_link_create(); ESP_ERROR_CHECK(i2c_master_start(cmd)); ESP_ERROR_CHECK(i2c_master_write_byte(cmd, SCD30_I2C_ADDRESS|I2C_WRITE_BIT, I2C_MASTER_NACK)); ESP_ERROR_CHECK(i2c_master_write_byte(cmd, address >> 8, I2C_MASTER_NACK)); ESP_ERROR_CHECK(i2c_master_write_byte...
Re: i2c_master_cmd_begin() and error code 263 (timeout) PostbyRobMeades»Thu May 11, 2023 11:07 am Ah, that's interesting, thanks for the swift response and the link. I'd kinda assumed that sincei2c_master_cmd_begin()necessarily has to block until it has finished with the bus,...
I am using the ESP32 function i2c_master_cmd_begin() as: err = i2c_master_cmd_begin(I2C_NUM_0, cmd, 1000 / portTICK_RATE_MS); and every now and then this function returns -1 (which is an error). Would there be a reason for this to happen? thanks,ESP...
I am using the ESP32 function i2c_master_cmd_begin() as: err = i2c_master_cmd_begin(I2C_NUM_0, cmd, 1000 / portTICK_RATE_MS); and every now and then this function returns -1 (which is an error). Would there be a reason for this to happen? thanks,ESP...
您好，I2C 总线timeout的原因是因为SCL保持长时间的low电平，导致会触发一个中断，所以发生这个报错，我认为可能需要检查下slave是否处于hang up挂起状态。 您参考下这篇应用手册32.3.7.3部分关于I2C SCL timeout的描述：https://www.ti.com.cn/cn/lit/ug/slau367p...
The Microsoft I2C HID Miniport Driver service is a kernel mode driver. If Microsoft I2C HID Miniport Driver fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the hidi2c service has failed to start....
Looking at the source for i2c_master_cmd_begin, it seems as tick_to_wait is used as the timeout for xQueueReceive. If this times out, the bus is reset. From my experiments it seems that this resets the slave device, making polling impossible. ...
摘要: 采用单片机模拟 I2C 总线的数据传输, 通过 RS-232 串行口与计算机连接, 可以由计算机方便的设置传感器的工作方式. 结果表明: 在 CMOS 图像传感器上采用 I2C 总线控制其各项功能简单,快捷, 是目前图像传感器采用的最普遍的总线.关键词:I2C 总线 CMOS 图像传感器 ...