ME310G1/ME910G1/ML865G1 AT Commands Reference Guide
80617ST10991A Rev. 11 Page 544 of 1039 2021-09-23
3.10.10. AT#I2CWR - Write to I2C
This command is used to send data to an I2C peripheral connected to module.
[1] Hardware User's Guide of the used module
AT#I2CWR=<sdaPin>,<sclPin>,<deviceId>,<registerId>,<len>
Execution command sends data to an I2C peripheral connected to module
GPIOs. After the writing activity has been accomplished, the GPIOs will not
be restored to the original setting. Use #GPIO command to see the status
of the used GPIOs. To have information on GPIO pins refer to document [1].
Parameters:
GPIO number for SDA. To know the
range use #I2CWR test command.
GPIO number for SCL. To know the
range use #I2CWR test command.
address of the I2C device (7 bits). The
Least Significant Bit is used for
read/write command, but in this
#I2CWR implementation, it doesn't
matter if the LSB is set to 0 or 1.
Address must be written in
hexadecimal form without 0x.
10 bit address is also supported.
addressing range extended to 10 bit
register to write data to