How can i use 4 Serial peripheral interface on nrf9160

[duxinglang]

I created a project on nrf9160, which connects many peripherals, including SPI,I2C,UART. According to the specification, nrf9160 can use up to 4 sets of serial peripherals at the same time because of address sharing. However, the actual situation is that when I use SPI2,SPI3,I2C1 at the same time, I can't get the binding of SPI2, and when I use SPI2,SPI3,UART1 at the same time, they are all ok, why?

[Martin Lesund]

Hi duxinglang,

Maybe you have earlier configured some board files?

anyway, try to set 

CONFIG_I2C_2=n
CONFIG_I2C_2_NRF_TWIM=n

[duxinglang]

Yes, when I tried this method, I found that my project crashed as soon as it started

[Martin Lesund]

Please provide the error logs from when you compile your project.

[duxinglang]

Now, I use UART1,SPI2,SPI3. When I open I2C0, the program cannot obtain binding. What is the reason?Is it because LOG needs to use UART0?And when I blocked the LOG in pri.conf, my program crashed as soon as it started

CONFIG_LOG=n
CONFIG_LOG_IMMEDIATE=n

# SPI
CONFIG_SPI=y
CONFIG_SPI_NRFX=y
CONFIG_SPI_2=y
CONFIG_SPI_2_NRF_SPIM=y
CONFIG_SPI_3=y
CONFIG_SPI_3_NRF_SPIM=y

# I2C
CONFIG_I2C=y
CONFIG_I2C_NRFX=y
CONFIG_I2C_0=y
CONFIG_I2C_0_NRF_TWIM=y
CONFIG_I2C_2=n
CONFIG_I2C_2_NRF_TWIM=n
CONFIG_I2C_INIT_PRIORITY=60

# UART
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_UART_LINE_CTRL=y
#CONFIG_UART_0_NRF_UARTE=y
#CONFIG_UART_0_NRF_FLOW_CONTROL=n
CONFIG_UART_1_NRF_UARTE=y
CONFIG_UART_1_NRF_FLOW_CONTROL=n

[Martin Lesund]

Correct, you would need to disable UART0.
The console and logging messages uses uart0 as default.