Rainbow Electronics MG260 - Manual (Page 224)

FLYFOT-MG260-MODULE
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Close I2C bus.
AT+WBM=1,2 +WBM: 0,0,0,4
OK
AT+WBM=1,1 OK
Open I2C Soft bus with the last
configuration :
Scl Gpio : 0
Sda Gpio : 4
AT+WBM = 1,2 +WBM: 1,1,0,4
OK
Defined values
0 : SPI bus.
1 : I2C bus.
2 : Parallel bus.
0 : close bus.
1 : open bus.
2 : get bus status.
0 : rest state is 0, the data is valid on rising edge (default value).
1 : rest state is 0, the data is valid on falling edge.
2 : rest state is 1, the data is valid on rising edge.
3 : rest state is 1, the data is valid on falling edge.
(default 0)
0 : LOW (Chip select signal is valid on low state). (Default value).
1 : HIGH (Chip select signal is valid on high state)