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feat(newib): Add "usleep" and "sleep" function

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This commit is contained in:
Dong Heng
2018-10-23 10:27:18 +08:00
parent 08355fc42d
commit 7bd6fc051b
3 changed files with 34 additions and 1 deletions
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1
components/esp8266/include/esp8266/rom_functions.h
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@ -17,7 +17,6 @@ uint32_t Wait_SPI_Idle();
void uart_div_modify(uint32_t uart_no, uint32_t baud_div);
void ets_delay_us(uint32_t us);
int ets_io_vprintf(int (*putc)(int), const char* fmt, va_list ap);
void system_soft_wdt_feed();

10
components/esp8266/include/rom/ets_sys.h
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@ -97,6 +97,16 @@ extern uint32_t WDEV_INTEREST_EVENT;
*/
void os_delay_us(uint16_t us);
/**
* @brief CPU do while loop for some time.
* In FreeRTOS task, please call FreeRTOS apis.
*
* @param uint32_t us : Delay time in us.
*
* @return None
*/
void ets_delay_us(uint32_t us);
/**
* @brief Register the print output function.
*

24
components/newlib/newlib/port/time.c
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@ -19,6 +19,7 @@
#include "esp_system.h"
#include "esp_timer.h"
#include "rom/ets_sys.h"
#include "FreeRTOS.h"
#include "task.h"
@ -141,3 +142,26 @@ clock_t _times_r(struct _reent *r, struct tms *tms)
return 0;
}
int usleep(useconds_t us)
{
const int us_per_tick = portTICK_PERIOD_MS * 1000;
if (us < us_per_tick) {
ets_delay_us((uint32_t) us);
} else {
/* since vTaskDelay(1) blocks for anywhere between 0 and portTICK_PERIOD_MS,
* round up to compensate.
*/
vTaskDelay((us + us_per_tick - 1) / us_per_tick);
}
return 0;
}
unsigned int sleep(unsigned int seconds)
{
vTaskDelay(seconds * (1000 / portTICK_PERIOD_MS));
return 0;
}