Is there any existing firmware for nRF9160 as LTE co-processor?

[JWizard]

Hello,

Is there any existing firmware where the nRF9160 can act as a coprocessor -- accepting AT commands and the ability to forward LTE data to and from a host application processor over any one bus (SPI, UART, I2C, One-Wire, etc) ?

[Sigurd]

Hi, 

Is there any existing firmware where the nRF9160 can act as a coprocessor -- accepting AT commands and the ability to forward LTE data to and from a host application processor over any one bus (SPI, UART, I2C, One-Wire, etc) ?

Yes. See this and this link.