STM32 RTC : Prescaler calculation issue

jeromecoutant · jeromecoutant · commit a9552232e447 · 2018-10-22T15:58:32.000+02:00
diff --git a/targets/TARGET_STM/rtc_api_hal.h b/targets/TARGET_STM/rtc_api_hal.h
@@ -81,7 +81,7 @@ void rtc_deactivate_wake_up_timer(void);
 
 /* PREDIV_S : 15-bit synchronous prescaler */
 /* PREDIV_S is set in order to get a 1 Hz clock */
-#define PREDIV_S_VALUE RTC_CLOCK / (PREDIV_A_VALUE + 1) - 1
+#define PREDIV_S_VALUE (RTC_CLOCK / (PREDIV_A_VALUE + 1) - 1)
 
 /** Synchronise the RTC shadow registers.
  *

Original file line number	Diff line number	Diff line change
`@@ -81,7 +81,7 @@ void rtc_deactivate_wake_up_timer(void);`
`81`	`81`
`82`	`82`	`/* PREDIV_S : 15-bit synchronous prescaler */`
`83`	`83`	`/* PREDIV_S is set in order to get a 1 Hz clock */`
`84`		`-#define PREDIV_S_VALUE RTC_CLOCK / (PREDIV_A_VALUE + 1) - 1`
	`84`	`+#define PREDIV_S_VALUE (RTC_CLOCK / (PREDIV_A_VALUE + 1) - 1)`
`85`	`85`
`86`	`86`	`/** Synchronise the RTC shadow registers.`
`87`	`87`	`*`