diff options
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c')
| -rw-r--r-- | nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c | 108 |
1 files changed, 105 insertions, 3 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c b/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c index 7eb1a896b..d2f2ab0b4 100644 --- a/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c +++ b/nuttx/arch/arm/src/stm32/stm32f40xxx_rtc.c @@ -45,6 +45,7 @@ #include <time.h> #include <errno.h> +#include <debug.h> #include <arch/board/board.h> @@ -72,6 +73,10 @@ # error "CONFIG_STM32_PWR must selected to use this driver" #endif +#ifndef CONFIG_DEBUG +# undef CONFIG_DEBUG_RTC +#endif + /* Constants ************************************************************************/ #define SYNCHRO_TIMEOUT (0x00020000) @@ -80,6 +85,20 @@ #define RTC_PREDIV_S (0xff) #define RTC_PREDIV_A (0x7f) +/* Debug ****************************************************************************/ + +#ifdef CONFIG_DEBUG_RTC +# define rtcdbg dbg +# define rtcvdbg vdbg +# define rtclldbg lldbg +# define rtcllvdbg llvdbg +#else +# define rtcdbg(x...) +# define rtcvdbg(x...) +# define rtclldbg(x...) +# define rtcllvdbg(x...) +#endif + /************************************************************************************ * Private Types ************************************************************************************/ @@ -106,6 +125,76 @@ volatile bool g_rtc_enabled = false; * Private Functions ************************************************************************************/ /************************************************************************************ + * Name: rtc_dumpregs + * + * Description: + * Disable RTC write protection + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ************************************************************************************/ + +#ifdef CONFIG_DEBUG_RTC +static void rtc_dumpregs(FAR const char *msg) +{ + rtclldbg("%s:\n", msg); + rtclldbg(" TR: %08x\n", getreg32(STM32_RTC_TR)); + rtclldbg(" DR: %08x\n", getreg32(STM32_RTC_DR)); + rtclldbg(" CR: %08x\n", getreg32(STM32_RTC_CR)); + rtclldbg(" ISR: %08x\n", getreg32(STM32_RTC_ISR)); + rtclldbg(" PRER: %08x\n", getreg32(STM32_RTC_PRER)); + rtclldbg(" WUTR: %08x\n", getreg32(STM32_RTC_WUTR)); + rtclldbg(" CALIBR: %08x\n", getreg32(STM32_RTC_CALIBR)); + rtclldbg(" ALRMAR: %08x\n", getreg32(STM32_RTC_ALRMAR)); + rtclldbg(" ALRMBR: %08x\n", getreg32(STM32_RTC_ALRMBR)); + rtclldbg(" SHIFTR: %08x\n", getreg32(STM32_RTC_SHIFTR)); + rtclldbg(" TSTR: %08x\n", getreg32(STM32_RTC_TSTR)); + rtclldbg(" TSDR: %08x\n", getreg32(STM32_RTC_TSDR)); + rtclldbg(" TSSSR: %08x\n", getreg32(STM32_RTC_TSSSR)); + rtclldbg(" CALR: %08x\n", getreg32(STM32_RTC_CALR)); + rtclldbg(" TAFCR: %08x\n", getreg32(STM32_RTC_TAFCR)); + rtclldbg("ALRMASSR: %08x\n", getreg32(STM32_RTC_ALRMASSR)); + rtclldbg("ALRMBSSR: %08x\n", getreg32(STM32_RTC_ALRMBSSR)); + rtclldbg(" BK0: %08x\n", getreg32(STM32_RTC_BK0R)); +} +#else +# define tc_dumpregs(msg) +#endif + +/************************************************************************************ + * Name: rtc_dumptime + * + * Description: + * Disable RTC write protection + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ************************************************************************************/ + +#ifdef CONFIG_DEBUG_RTC +static void rtc_dumptime(FAR struct tm *tp, FAR const char *msg) +{ + rtclldbg("%s:\n", msg); + rtclldbg(" tm_sec: %08x\n", tp->tm_sec); + rtclldbg(" tm_min: %08x\n", tp->tm_min); + rtclldbg(" tm_hour: %08x\n", tp->tm_hour); + rtclldbg(" tm_mday: %08x\n", tp->tm_mday); + rtclldbg(" tm_mon: %08x\n", tp->tm_mon); + rtclldbg(" tm_year: %08x\n", tp->tm_year); +} +#else +# define rtc_dumptime(tp, msg) +#endif + +/************************************************************************************ * Name: rtc_wprunlock * * Description: @@ -485,6 +574,8 @@ int up_rtcinitialize(void) uint32_t regval; int ret; + rtc_dumpregs("On reset"); + /* Clocking for the PWR block must be provided. However, this is done * unconditionally in stm32f40xxx_rcc.c on power up. This done unconditionally * because the PWR block is also needed to set the internal voltage regulator for @@ -508,6 +599,10 @@ int up_rtcinitialize(void) /* Perform the one-time setup of the LSE clocking to the RTC */ ret = rtc_setup(); + + /* Remember that the RTC is initialized */ + + putreg32(RTC_MAGIC, STM32_RTC_BK0R); } else { @@ -527,7 +622,7 @@ int up_rtcinitialize(void) */ #ifdef CONFIG_RTC_ALARM -# warning "Missing logic" +# warning "Missing EXTI setup logic" /* Then attach the ALARM interrupt handler */ @@ -536,6 +631,7 @@ int up_rtcinitialize(void) #endif g_rtc_enabled = true; + rtc_dumpregs("After Initialzation"); return OK; } @@ -581,6 +677,8 @@ int up_rtc_getdatetime(FAR struct tm *tp) } while (tmp != dr); + rtc_dumpregs("Reading Time"); + /* Convert the RTC time to fields in struct tm format. All of the STM32 * All of the ranges of values correspond between struct tm and the time * register. @@ -612,6 +710,8 @@ int up_rtc_getdatetime(FAR struct tm *tp) tmp = (dr & (RTC_DR_YU_MASK|RTC_DR_YT_MASK)) >> RTC_DR_YU_SHIFT; tp->tm_year = rtc_bcd2bin(tmp) + 100; + + rtc_dumptime(tp, "Returning"); return OK; } @@ -640,6 +740,7 @@ int up_rtc_settime(FAR const struct timespec *tp) /* Break out the time values (not that the time is set only to units of seconds) */ (void)gmtime_r(&tp->tv_sec, &newtime); + rtc_dumptime(&newtime, "Setting time"); /* Then write the broken out values to the RTC */ @@ -663,8 +764,8 @@ int up_rtc_settime(FAR const struct timespec *tp) */ dr = (rtc_bin2bcd(newtime.tm_mday) << RTC_DR_DU_SHIFT) | - ((rtc_bin2bcd(newtime.tm_mon) + 1) << RTC_DR_MU_SHIFT) | - ((rtc_bin2bcd(newtime.tm_year) - 100) << RTC_DR_YU_SHIFT); + ((rtc_bin2bcd(newtime.tm_mon + 1)) << RTC_DR_MU_SHIFT) | + ((rtc_bin2bcd(newtime.tm_year - 100)) << RTC_DR_YU_SHIFT); dr &= ~RTC_DR_RESERVED_BITS; /* Disable the write protection for RTC registers */ @@ -692,6 +793,7 @@ int up_rtc_settime(FAR const struct timespec *tp) /* Re-enable the write protection for RTC registers */ rtc_wprlock(); + rtc_dumpregs("New time setting"); return ret; } |