I connect AD7190 to my STM32F217 board through SPI2. I can read from configuration registers, when power on. For example, I read from Mode and Configuration registers their default values - 0x080060 and 0x000117 respectively. So, I guess, that my schematic and SPI configuration are valid.
But, I have an issue, when I try to write to register. After write operation, I read wrong values from current register.
For example, I write Mode register:
CS -> low, send to AD7190 four bytes - 0x48 (Communication register), 0x28, 0x00, 0x60 (Data), CS -> high.
But, after that, I read only 0xFF.
sorry for my English,