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newlib: Fix clock_getres() improves accuracy

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Returns not rounded value of resolution for WITH_RTC and !WITH_FRC
This commit is contained in:
KonstantinKondrashov
2020-10-07 17:39:11 +08:00
parent 80f993bf31
commit 7ae7adf16a
4 changed files with 4 additions and 4 deletions
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2
components/esp_common/include/esp_private/system_internal.h
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@@ -72,7 +72,7 @@ int64_t esp_system_get_time(void);
/** /**
* @brief Get the resolution of the time returned by `esp_system_get_time`. * @brief Get the resolution of the time returned by `esp_system_get_time`.
* *
* @returns the resolution in microseconds * @returns the resolution in nanoseconds
*/ */
uint32_t esp_system_get_time_resolution(void); uint32_t esp_system_get_time_resolution(void);

2
components/esp_system/system_time.c
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@@ -42,5 +42,5 @@ int64_t IRAM_ATTR __attribute__((weak)) esp_system_get_time(void)
uint32_t IRAM_ATTR __attribute__((weak)) esp_system_get_time_resolution(void) uint32_t IRAM_ATTR __attribute__((weak)) esp_system_get_time_resolution(void)
{ {
return 1000000L / rtc_clk_slow_freq_get_hz(); return 1000000000L / rtc_clk_slow_freq_get_hz();
} }

2
components/esp_timer/src/esp_timer.c
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@@ -539,6 +539,6 @@ int64_t IRAM_ATTR esp_system_get_time(void)
uint32_t IRAM_ATTR esp_system_get_time_resolution(void) uint32_t IRAM_ATTR esp_system_get_time_resolution(void)
{ {
return 1; return 1000;
} }
#endif #endif

2
components/newlib/time.c
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@@ -287,7 +287,7 @@ int clock_getres (clockid_t clock_id, struct timespec *res)
} }
res->tv_sec = 0; res->tv_sec = 0;
res->tv_nsec = esp_system_get_time_resolution() * 1000; res->tv_nsec = esp_system_get_time_resolution();
return 0; return 0;
#else #else