From dca6dd35dc27d48f593d1cfdff5d35e2dfb95968 Mon Sep 17 00:00:00 2001
From: Jonathan Naylor <naylorjs@yahoo.com>
Date: Wed, 14 Dec 2016 13:24:08 +0000
Subject: [PATCH] Reduce the value of the LPTMR CMR by one.

---
 IOTeensy.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/IOTeensy.cpp b/IOTeensy.cpp
index 4afe045..5e3d24e 100644
--- a/IOTeensy.cpp
+++ b/IOTeensy.cpp
@@ -131,7 +131,7 @@ void CIO::startInt()
   SIM_SCGC5  |= SIM_SCGC5_LPTIMER;                                    // Enable Low Power Timer Access
   LPTMR0_CSR  = 0;                                                    // Disable
   LPTMR0_PSR  = LPTMR_PSR_PBYP;                                       // Bypass prescaler/filter
-  LPTMR0_CMR  = EXTERNAL_OSC / 24000;
+  LPTMR0_CMR  = (EXTERNAL_OSC / 24000) - 1;                           // Frequency divided by CMR + 1
   LPTMR0_CSR  = LPTMR_CSR_TPS(2) |                                    // Pin: 0=CMP0, 1=xtal, 2=pin13
                 LPTMR_CSR_TMS;                                        // Mode Select, 0=timer, 1=counter
   LPTMR0_CSR |= LPTMR_CSR_TEN;                                        // Enable