PCF8574 is a I2C chip which can expand IO up to 8 and the initial state of IO is HIGH. Different from other I2C chips, the PCF8574 has no register, instead, a byte to specify the address on that chip to write to is always used to control the IO: i2cset -y 1 0x20 0xEF 0x20...
Usage:i2cdump [-f] [-y] [-r first-last] I2CBUSADDRESS[MODE [BANK[BANKREG]]]I2CBUS is an integeroran I2CbusnameADDRESSis an integer (0x03-0x77) MODE is one of:b(byte,default) w (word) W (word on even registeraddresses)s (SMBusblock)i (I2Cblock)c (consecutivebyte)Append p fo...
STM32的i2c 我用着没有出过问题：主要是ISL12016和DS3231，
MPU6050 mpu(0x68); //06/23/18 chg to AD0 high addr on 2-motor robot #pragma region MPU6050_SUPPORT uint8_t mpuIntStatus; // holds actual interrupt status byte from MPU. Used in Homer's Overflow routine uint8_t devStatus; // return status after each device operation (0 = success,...
Wire.write(0x0F); // Put WHO_AM_I address in Tx buffer Wire.endTransmission(false); // Send the Tx buffer, but send a restart to keep connection alive Wire.requestFrom(0x3B, 1); // Read two bytes from slave PROM address while (Wire.available()) { ...
ds3231 0x68 在目录下多了一个1-0068 pi@raspberrypi:/sys/class/i2c-adapter/i2c-1 $ ls 1-0068 device name of_node subsystem delete_device i2c-dev new_device power uevent pi@raspberrypi:/sys/class/i2c-adapter/i2c-1 $ cd 1-0068/ pi@raspberrypi:/sys/class/i2c-adapter/i2c-1/1-0068 $...