nRF 52 TWI in LSM9DS1

[drVrh]

Hello,

I want to test the IKS01A1 (STM) board with the STEVAL-MKI159v1 board by placing the IKS board in the Arduino connectors on the nRF52 (PCA10056) DK board.

I want to use this driver:

https://github.com/STMicroelectronics/STMems_Standard_C_drivers/tree/master/lsm9ds1_STdC

By writing the platform_write and platform_read functions with the nRF SDK, the way the HAL_I2C_Mem_Read function is written. platform_write and platform_read is In this source: 

https://github.com/STMicroelectronics/STMems_Standard_C_drivers/blob/master/lsm9ds1_STdC/example/read_data_simple.c

From the nRF SDK I only know the writing and reading functions on the TWI from the bus, but there is no function that would write/read in the register of  TWI slave.

I wonder if there is anything like that? And what is the procedure? For HAL_I2C_Mem_Read / Write functions, this is written:

Write an amount of data in blocking mode to a specific memory address using HAL_I2C_Mem_Write ()

(+) Read a number of data in a blocking mode from a specific memory address using HAL_I2C_Mem_Read ()

the functions are, for example, here: 

https://github.com/PaxInstruments/STM32CubeF4/blob/master/Drivers/BSP/STM32469I-Discovery/stm32469i_discovery.c

Im asking for help.

I use: Segger Studio, nRF52 DK

[run_ar]

Hi,

Have you looked at our SDK example: nRF5_SDK_15.3.0_59ac345\examples\peripheral\twi_master_with_twis_slave?

[drVrh]

I solved the problems, as you can see in in the attached code.

github.com/.../nRF52-DK-and-LSM9DS1

For further work we need to include the header file from:

github.com/.../driver

the attached example comed from this source:

https://github.com/STMicroelectronics/STMems_Standard_C_drivers/tree/master/lsm9ds1_STdC/example

Note for Segger studio: 

printf should be enabled in: right mouse click on project > Options > choose Common > in search box type "float" > change Printf Floating Point Supported from No to float.