#include <generated/csr.h> #include "exceptions.h" #include "rtio.h" #include "ttl.h" void ttl_set_o(long long int timestamp, int channel, int value) { rtio_chan_sel_write(channel); rtio_o_timestamp_write(timestamp); rtio_o_address_write(0); rtio_o_data_write(value); rtio_write_and_process_status(timestamp, channel); } void ttl_set_oe(long long int timestamp, int channel, int oe) { rtio_chan_sel_write(channel); rtio_o_timestamp_write(timestamp); rtio_o_address_write(1); rtio_o_data_write(oe); rtio_write_and_process_status(timestamp, channel); } void ttl_set_sensitivity(long long int timestamp, int channel, int sensitivity) { rtio_chan_sel_write(channel); rtio_o_timestamp_write(timestamp); rtio_o_address_write(2); rtio_o_data_write(sensitivity); rtio_write_and_process_status(timestamp, channel); } long long int ttl_get(int channel, long long int time_limit) { long long int r; int status; rtio_chan_sel_write(channel); while((status = rtio_i_status_read())) { if(rtio_i_status_read() & RTIO_I_STATUS_OVERFLOW) { rtio_i_overflow_reset_write(1); exception_raise_params(EID_RTIO_OVERFLOW, channel, 0, 0); } if(rtio_get_counter() >= time_limit) { /* check empty flag again to prevent race condition. * now we are sure that the time limit has been exceeded. */ if(rtio_i_status_read() & RTIO_I_STATUS_EMPTY) return -1; } /* input FIFO is empty - keep waiting */ } r = rtio_i_timestamp_read(); rtio_i_re_write(1); return r; }