From c7d33767e06000f9da3befd6a7954b82c42d080d Mon Sep 17 00:00:00 2001
From: Peter <tixiv@gmx.net>
Date: Sat, 10 Sep 2016 15:13:23 +0200
Subject: [PATCH] change qei types to int16_t

---
 os/hal/ports/NRF5/LLD/hal_qei_lld.h        | 2 +-
 os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h | 2 +-
 os/hal/src/hal_qei.c                       | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/os/hal/ports/NRF5/LLD/hal_qei_lld.h b/os/hal/ports/NRF5/LLD/hal_qei_lld.h
index 6328babb..85c96a50 100644
--- a/os/hal/ports/NRF5/LLD/hal_qei_lld.h
+++ b/os/hal/ports/NRF5/LLD/hal_qei_lld.h
@@ -166,7 +166,7 @@ typedef enum {
 /**
  * @brief   QEI counter type.
  */
-typedef int32_t qeicnt_t;
+typedef int16_t qeicnt_t;
 
 /**
  * @brief   QEI delta type.
diff --git a/os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h b/os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h
index c708b5ef..ba33a291 100644
--- a/os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h
+++ b/os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h
@@ -251,7 +251,7 @@ typedef enum {
 /**
  * @brief   QEI counter type.
  */
-typedef uint16_t qeicnt_t;
+typedef int16_t qeicnt_t;
 
 /**
  * @brief   QEI delta type.
diff --git a/os/hal/src/hal_qei.c b/os/hal/src/hal_qei.c
index eb6223e0..9b084f70 100644
--- a/os/hal/src/hal_qei.c
+++ b/os/hal/src/hal_qei.c
@@ -364,7 +364,7 @@ qeidelta_t qeiUpdateI(QEIDriver *qeip) {
                 "invalid state");
 
   cnt = qei_lld_get_count(qeip);
-  delta = cnt - qeip->last;
+  delta = (qeicnt_t)(cnt - qeip->last);
   qeip->last = cnt;
 
   return delta;