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esp_system: link time, not runtime, dependency on esp_timer

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This commit is contained in:
Renz Bagaporo
2020-07-14 14:46:13 +08:00
parent 346cf4430d
commit da88671491
12 changed files with 73 additions and 103 deletions
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39
components/esp_system/system_time.c
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@@ -15,27 +15,32 @@
#include "esp_system.h"
#include "esp_attr.h"
typedef struct {
esp_system_time_fn_t fn; // time provider function
uint32_t resolution; // resolution in microseconds of the time provider
} system_time_provider_t;
#include "soc/spinlock.h"
#include "soc/rtc.h"
// This is expected to be modified only on startup, so
// it should be safe to not put locks on it.
static system_time_provider_t s_system_time_provider;
#include "sdkconfig.h"
int64_t IRAM_ATTR esp_system_get_time(void)
#if CONFIG_IDF_TARGET_ESP32
#include "esp32/rtc.h"
#elif CONFIG_IDF_TARGET_ESP32S2
#include "esp32s2/rtc.h"
#endif
#include "esp_private/startup_internal.h"
// A component in the build should provide strong implementations that make use of
// and actual hardware timer to provide timekeeping functions.
int64_t IRAM_ATTR __attribute__((weak)) esp_system_get_time(void)
{
return (*s_system_time_provider.fn)();
int64_t t = 0;
static spinlock_t s_time_lock = SPINLOCK_INITIALIZER;
spinlock_acquire(&s_time_lock, SPINLOCK_WAIT_FOREVER);
t = (esp_rtc_get_time_us() - g_startup_time);
spinlock_release(&s_time_lock);
return t;
}
uint32_t IRAM_ATTR esp_system_get_time_resolution(void)
uint32_t IRAM_ATTR __attribute__((weak)) esp_system_get_time_resolution(void)
{
return s_system_time_provider.resolution;
}
void esp_system_set_time_provider(esp_system_time_fn_t time_fn, uint32_t resolution)
{
s_system_time_provider.fn = time_fn;
s_system_time_provider.resolution = resolution;
return 1000000L / rtc_clk_slow_freq_get_hz();
}