qei driver: fix potential overflow in qeiUpdateI

when quiUpdate isn't called for while an cnt(uint16_t) is above 32767 delta(int16_t) can overflow.
2016-05-15 20:11:18 +02:00 · 2016-05-15 20:11:18 +02:00 · 4a36fb944b
parent ec6cada170
commit 4a36fb944b
1 changed files with 1 additions and 1 deletions
--- a/os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h
+++ b/os/hal/ports/STM32/LLD/TIMv1/hal_qei_lld.h
@ -238,7 +238,7 @@ typedef uint16_t qeicnt_t;
 /**
 * @brief   QEI delta type.
 */
-typedef int16_t qeidelta_t;
+typedef int32_t qeidelta_t;

 /**
 * @brief   Driver configuration structure.