From cb30a8d357edd88fd3b2c4d24e1ab3f7d7d16b21 Mon Sep 17 00:00:00 2001
From: g4eml <colin@durbridge.me.uk>
Date: Thu, 22 Dec 2016 16:35:35 +0000
Subject: [PATCH] Adjust ADC pre-trigger setting for external TCXO

External TCXO was not working with Pre-Trigger set to B.
This change sets it to A which appears to work.
---
 IOTeensy.cpp | 1 -
 1 file changed, 1 deletion(-)

diff --git a/IOTeensy.cpp b/IOTeensy.cpp
index ad2e49b..ab75282 100644
--- a/IOTeensy.cpp
+++ b/IOTeensy.cpp
@@ -123,7 +123,6 @@ void CIO::startInt()
 #if defined(EXTERNAL_OSC)
   // Set ADC0 to trigger from the LPTMR at 24 kHz
   SIM_SOPT7   = SIM_SOPT7_ADC0ALTTRGEN |                              // Enable ADC0 alternate trigger
-                SIM_SOPT7_ADC0PRETRGSEL |                             // Enable ADC0 pre-trigger
                 SIM_SOPT7_ADC0TRGSEL(14);                             // Trigger ADC0 by LPTMR0
 
   CORE_PIN13_CONFIG = PORT_PCR_MUX(3);