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jerzy pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-core.git
The following commit(s) were added to refs/heads/master by this push:
new 6d2f840cc hw/mcu/stm32f1: Disable SysTick when RTC is selected as tick
source
6d2f840cc is described below
commit 6d2f840ccd2981e18088a588baf23af160ac757b
Author: Jerzy Kasenberg <[email protected]>
AuthorDate: Wed Jun 12 12:37:27 2024 +0200
hw/mcu/stm32f1: Disable SysTick when RTC is selected as tick source
When tick was provided by RTC instead of SysTick (default)
and MCUboot used SysTick during boot, SysTick was never turned off
and was running in application code.
This resulted in two interrupts advancing mynewt OS tick so clock
was running too fast.
Now os_tick_init() from RTC code disables SysTick that could be
started in bootloader
Signed-off-by: Jerzy Kasenberg <[email protected]>
---
hw/mcu/stm/stm32f1xx/src/rtc_tick_stm32f1xx.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/mcu/stm/stm32f1xx/src/rtc_tick_stm32f1xx.c
b/hw/mcu/stm/stm32f1xx/src/rtc_tick_stm32f1xx.c
index 3220991f3..9f27be4f1 100644
--- a/hw/mcu/stm/stm32f1xx/src/rtc_tick_stm32f1xx.c
+++ b/hw/mcu/stm/stm32f1xx/src/rtc_tick_stm32f1xx.c
@@ -120,6 +120,7 @@ os_tick_init(uint32_t os_ticks_per_sec, int prio)
.PeriphClockSelection = RCC_PERIPHCLK_RTC,
.RTCClockSelection = RCC_RTCCLKSOURCE_LSE,
};
+ SysTick->CTRL = 0;
HAL_RCCEx_PeriphCLKConfig(&clock_init);
__HAL_RCC_RTC_ENABLE();
