Our mode uses DS90UB948 and DS90UB949 paired, the MCU is connected to the I2C interface of DS90UB949, the I2C bus behind DS90UB948 is connected to multiple slave devices, and the SPI interface of DS90UB948 is also connected to one slave device.
Our purpose is to use both the SPI and I2C interfaces of the DS90UB949. Is it feasible?
My question is:
1. If DS90UB949 and MCU only have I2C interface, can DS90UB948 convert the I2C signal sent by DS90UB949 to SPI signal to communicate with the slave device?
2. If the MCU is connected to the I2C and SPI interfaces of the DS90UB949, can the SPI and I2C interfaces of the DS90UB948 be used at the same time? If they cannot be used at the same time, is it possible to use these two interfaces in a time-sharing manner?
3. If the above two methods are not feasible, is there a recommended way to implement it?