From a3b9184af454f85da688e8975e248c69418bca02 Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Fri, 2 Apr 2021 14:07:02 -0600
Subject: need to do some measurements sometime to determine if fast or
 phase-correct PWM is better on t1616

---
 hwdef-gchart-fet1-t1616.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/hwdef-gchart-fet1-t1616.h b/hwdef-gchart-fet1-t1616.h
index 3d41951..365ecd7 100644
--- a/hwdef-gchart-fet1-t1616.h
+++ b/hwdef-gchart-fet1-t1616.h
@@ -91,6 +91,9 @@ inline void hwdef_setup() {
 
     // set up the PWM
     // TODO: add references to MCU documentation
+    // TODO: measure 5 MHz fast PWM vs 10 MHz phase-correct, to see if it
+    //       still has issues at 0/255 and 255/255 like older models did
+    //       (and maybe switch to phase-correct@10MHz)
     TCA0.SINGLE.CTRLB = TCA_SINGLE_CMP0EN_bm | TCA_SINGLE_CMP1EN_bm | TCA_SINGLE_WGMODE_SINGLESLOPE_gc;
     TCA0.SINGLE.PER = 255;
     TCA0.SINGLE.CTRLA = TCA_SINGLE_CLKSEL_DIV1_gc | TCA_SINGLE_ENABLE_bm;
-- 
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