forked from M-Labs/artiq
sayma: properly determine SYSREF coarse calibration target
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@ -135,7 +135,12 @@ fn reach_sysref_ddmtd_target(target: i32, tolerance: i32) -> Result<(), &'static
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}
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fn calibrate_sysref_target(rising_average: i32, falling_average: i32) -> Result<i32, &'static str> {
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let coarse_target = (falling_average - 16 + DDMTD_N) % DDMTD_N; // HACK
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let coarse_target =
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if rising_average < falling_average {
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(rising_average + falling_average)/2
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} else {
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((falling_average - (DDMTD_N - rising_average))/2 + DDMTD_N) % DDMTD_N
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};
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info!("SYSREF calibration coarse target: {}", coarse_target);
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reach_sysref_ddmtd_target(coarse_target, 2)?;
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let target = measure_ddmdt_phase();
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