Issues with Sending Data to Microcontroller via SPI Using DE10-Lite Board

Hi,
some issues with the code

- bit_cnt == 8 (else condition) does never happen, need reg [3:0] bit_cnt;

- data_reg is only loaded once on POR, spi_master sends mosi == 0 constantly after first frame

- using always @(posedge sclk) is legal but might cause timing issues in a complexer design. Better use single system clock and modify
clock-enable scheme respectively

What's the indended SPI mode?

Regards
Frank