occheung/artiq
1
0
Fork 0
forked from M-Labs/artiq
Code Pull Requests Activity

runtime/ttl: use rtio_output and rtio_input_wait

Browse Source
This commit is contained in:
Robert Jördens 2016-02-29 19:20:07 +01:00
parent 5dae9f8aa8
commit ecedbbef4c
1 changed files with 5 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
artiq/runtime/ttl.c
View File

@ -6,53 +6,24 @@
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);
rtio_output(timestamp, channel, 0, value);
}
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);
rtio_output(timestamp, channel, 1, oe);
}
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);
rtio_output(timestamp, channel, 2, sensitivity);
}
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(status & RTIO_I_STATUS_OVERFLOW) {
rtio_i_overflow_reset_write(1);
artiq_raise_from_c("RTIOOverflow",
"RTIO overflow at channel {0}",
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 */
}
rtio_input_wait(time_limit, channel);
r = rtio_i_timestamp_read();
rtio_i_re_write(1);
return r;
@ -60,8 +31,5 @@ long long int ttl_get(int channel, long long int time_limit)
void ttl_clock_set(long long int timestamp, int channel, int ftw)
{
rtio_chan_sel_write(channel);
rtio_o_timestamp_write(timestamp);
rtio_o_data_write(ftw);
rtio_write_and_process_status(timestamp, channel);
rtio_output(timestamp, channel, 0, ftw);
}