Hi.
I have a NIOS2 design that requires real time data in and out via codec.
I'll be processing one data point at a time.
My code will read SPI for data ready, when ready - write data to SPI, then read returned data from SPI.
I ran across the following code on the next thread over - it uses only IOWR and IORD functions, so it is simpler than the examples i've studied, but it's about the complexity i would hope for, for simple A/D/A to/from NIOS2.
Does this code look OK as is? I guess i will need to add a 'reset data-ready flag' instruction, right?
# include <altera_avalon_spi_regs.h># include <altera_avalon_spi.h>
main{
int test;
while (!(IORD_ALTERA_AVALON_SPI_STATUS(SPI_BASE) & ALTERA_AVALON_SPI_STATUS_TRDY_MSK));
IOWR_ALTERA_AVALON_SPI_TXDATA(SPI_BASE, 0xFFFF);
test=IORD_ALTERA_AVALON_SPI_RXDATA(SPI_BASE);
}
To recap then - Is this all i need (in main C NIOS2) to poll, write, read? Any obvious things Missing?
Thanks all,
