i2c_nrfx_twim: Error 195952641 occurred for message 0

[xinjiang]

It works when I use I2C_2 to communicateon nrf9160. The register value is successfully accessed when i2C_reg_write_byte() is called.

9160dk_9160ns.overlay:

&i2c2 {
	status = "okay";
	sda-pin = <0>;                
    scl-pin = <1>;
	clock-frequency = <400000>;
	da270@26 {
		compatible = "mir,da270";
		reg = <38>;
		label = "DA270";
		int-gpios = <&gpio0 2 0>;
	};
};

I want to change I2C2 to I2C1.

Modified overlay:

&i2c1 {
	compatible = "nordic,nrf-twim";
	status = "okay";
	sda-pin = <0>;                
    scl-pin = <1>;
	clock-frequency = <400000>;
	da270@26 {
		compatible = "mir,da270";
		reg = <38>;
		label = "DA270";
		int-gpios = <&gpio0 2 0>;
	};
};

&uart1 {
	status = "disabled";
};

The following error occurs when i2C_reg_write_byte() is called to access the same register of the slave machine:

The code is the same and I haven't changed it. Why is this a problem?

[JONATHAN LL]

Hi,

In you proj.conf file try to set:

CONFIG_I2C=y

CONFIG_I2C_NRFX=y
CONFIG_I2C_1=y
CONFIG_I2C_1_NRF_TWIM=y

CONFIG_I2C_2=n
CONFIG_I2C_2_NRF_TWIM=n

Regards,
Jonathan

[xinjiang]

The project won't open after I've configured it this way

pri.config:

#CONFIG_TRUSTED_EXECUTION_NONSECURE=y

# LOG
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3

# UART interface
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y

# Segger RTT
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_LOG_BACKEND_RTT=y
#CONFIG_UART_CONSOLE=n
#CONFIG_LOG_BACKEND_UART=n

# Network
CONFIG_NETWORKING=y
CONFIG_NET_NATIVE=n
CONFIG_NET_SOCKETS=y
CONFIG_NET_SOCKETS_OFFLOAD=y

# BSD library
CONFIG_BSD_LIBRARY=y

# LTE link control
CONFIG_LTE_LINK_CONTROL=y
CONFIG_LTE_AUTO_INIT_AND_CONNECT=n
CONFIG_LTE_NETWORK_MODE_NBIOT_GPS=y
CONFIG_LTE_LEGACY_PCO_MODE=y

# ADC
CONFIG_ADC=y
CONFIG_ADC_NRFX_SAADC=y

#DA270
CONFIG_I2C=y
CONFIG_SENSOR=y
CONFIG_DA270=y
CONFIG_DA270_TRIGGER_GLOBAL_THREAD=y
CONFIG_SENSOR_LOG_LEVEL_WRN=y
CONFIG_I2C_NRFX=y
CONFIG_I2C_1=y
CONFIG_I2C_1_NRF_TWIM=y
CONFIG_I2C_2=n
CONFIG_I2C_2_NRF_TWIM=n

# AT host library
CONFIG_AT_HOST_LIBRARY=y
#CONFIG_AT_CMD=y
#CONFIG_AT_NOTIF=y

# Device power management
CONFIG_DEVICE_POWER_MANAGEMENT=y

CONFIG_MAIN_STACK_SIZE=4096
CONFIG_HEAP_MEM_POOL_SIZE=4096
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

ERROR:

These macros are automatically activated when the device tree is configured. I accessed the register error during debug.

[xinjiang]

I tried I2C_3 and it worked. I have used uart0, uart2 and uart3, so I can only use I2C_1 now. This problem has bothered me for a long time.

[JONATHAN LL]

Hi,

uart1 and i2c_1 use the same memory base address and can not be used simultaneously, see https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf9160%2Fmemory.html&cp=2_0_0_3_1_1&anchor=topic for more info on what have the same ID. 

xinjiang said:

tried I2C_3 and it worked.

if this solved you problem then mark it as suggested answer.

Regards,
Jonathan

[xinjiang]

In my overlay file, uart1 is obviously closed