Hi,
Just for experimentation I am trying to interface two DE10 lite boards, one as a SPI master and one as SPI Slave.
I have tested the Avalon SPI slave core successfully by interfacing with Rasberry pi acting as a SPI master.
I am running into a few issues when testing the Avalon SPI core as a Master.
I have done the following till now:
Instantiated and Synthesize NIOS + Spi Master core as a QSYS system. Exported the SPI conduit and connected them to GPIO pins. The core is configured at SCLK 1 Mhz. I program the FPGA with the elf.
Logic analyser is connected to the GPIO pins
In NIOS eclipse : I have extended the small hello world program and included the SPI related headers ( Registers and the SPI command files)
When I issue the command : "alt_avalon_spi_command(SPI_BASE, 0, 1, &r_data, 0, 0, 0)" I see absolutely no output on the GPIO lines.
Any suggestions on what could be going wrong ?
Thanks
Elizabeth
