I'm using a K60F120M Tower with MQX 4.0.2. I tried to set the CS signal for spi2 to SPI2_CS0/1 with the _io_ctl()-command.
The code looks like this:
uint_32 mcp23s17_CS = SPI_PUSHR_PCS(1 << 0); // Chip-Select-Mask for SPI2_CS0
mcp23s17_SPI = _io_fopen("spi2:", NULL);
_io_ioctl(mcp23s17_SPI, IO_IOCTL_SPI_SET_CS, &mcp23s17_CS);
The BSPCFG_ENABLE_SPI2 is set in user_config.h and the return value of _io_fopen isn't NULL. The return value of _io_ctl() is SPI_OK.
If I measure the CS-signal it is always on high, although the MOSI and the CLK signals are OK.
If I don't try to change the standard settings the CS signal works.
Thanks for any help on this problem.