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# addr shoube the same as the actual setting of A0A1, default 0X48ĭtoverlay=sc16is752-i2c,int_pin=24,addr=0x48 Append the line below to /boot/config.txt file:.#You will get 2.52 information if you install it correctly Open a terminal and run the following commands： Working with Raspberry Pi Enable I2C Interface Supports up to 5 devices by changing the pin, if you want to stack more than five devices, you need to wires them by cable. If you buy the new version which is produced after 10291231, the interrupt pin is configurable by soldering resistors. If you bought the old version which is produced before 20191231, the interrupt pin is connected to GPIO of PI directly, you can only wiring the devices for stacking multi-devices. In theory, you can connect 32 devices to the same developer board by changing address. 【Note】This module A0 and A1 are default welded to 3.3V, with I2C address 0x48

For example, if you connect A1 and A0 to Vdd, the address of the module is 0x90 according to the table, to get the actual address you need to right-shift the data from 1001 000X to 100 1000, that is 0x48. The I2C addresses in the table are 8bits, however, the actual address is 7bits, you need to right-shift one bit to get the actual I2C address. This module uses I2C interface by default, and its device address is hardware configurable by A0 and A1.Ī0, A1 are used to control the I2C address of device, you can change them by soldering 0ohm resistors acccording the table: It also provides the application with 8 additional programmable I/O pins. The SC16IS752 is an I2C-bus/SPI bus interface to a dual-channel high performance UART.