grabber: fix frequency counter formula

2018-07-12 20:14:38 +08:00 · 2018-07-12 20:14:38 +08:00 · 46fb5adac3
parent 82def6b535
commit 46fb5adac3
1 changed files with 1 additions and 1 deletions
--- a/artiq/firmware/libboard_artiq/grabber.rs
+++ b/artiq/firmware/libboard_artiq/grabber.rs
@ -80,7 +80,7 @@ fn get_video_clock(g: usize) -> u32 {
    let freq_count = unsafe {
        (csr::GRABBER[g].freq_count_read)()
    } as u32;
-    2*freq_count*(csr::CONFIG_CLOCK_FREQUENCY/1000000)/255
+    2*freq_count*(csr::CONFIG_CLOCK_FREQUENCY/1000)/(511*1000)
 }

 pub fn tick() {