espressif/ESP8266_RTOS_SDK
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bugfix(pwm): add SLEEP0_CONF reg to stop timer

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This commit is contained in:
xiongyu
2020-06-12 18:10:32 +08:00
parent 72cbf0d55e
commit 8ba4058aec
2 changed files with 15 additions and 5 deletions
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18
components/esp8266/driver/pwm.c
View File

@ -55,7 +55,7 @@ static const char *TAG = "pwm";
#define AHEAD_TICKS3 2
#define MAX_TICKS 10000000ul
#define PWM_VERSION "PWM v3.2"
#define PWM_VERSION "PWM v3.4"
typedef struct {
uint32_t duty; /*!< pwm duty for each channel */
@ -259,9 +259,7 @@ esp_err_t pwm_get_phase(uint8_t channel_num, float *phase_p)
static void pwm_timer_enable(uint8_t enable)
{
if (0 == enable) {
ENTER_CRITICAL();
REG_WRITE(WDEVTSF0TIMER_ENA, REG_READ(WDEVTSF0TIMER_ENA) & (~WDEV_TSF0TIMER_ENA));
EXIT_CRITICAL();
} else {
REG_WRITE(WDEVTSF0TIMER_ENA, WDEV_TSF0TIMER_ENA);
}
@ -310,15 +308,20 @@ static void IRAM_ATTR pwm_timer_intr_handler(void)
pwm_obj->this_target = AHEAD_TICKS1 + AHEAD_TICKS3;
}
REG_WRITE(WDEVTSF0TIMER_ENA, 0);
REG_WRITE(WDEVSLEEP0_CONF, REG_READ(WDEVSLEEP0_CONF) & (~WDEV_TSFUP0_ENA));
REG_WRITE(WDEVTSF0TIMER_ENA, REG_READ(WDEVTSF0TIMER_ENA) & (~WDEV_TSF0TIMER_ENA));
REG_WRITE(WDEVTSFSW0_LO, 0);
//WARNING, pwm_obj->this_target - AHEAD_TICKS1 should be bigger than 2
REG_WRITE(WDEVTSF0_TIMER_LO, pwm_obj->this_target - AHEAD_TICKS1);
REG_WRITE(WDEVTSF0TIMER_ENA, WDEV_TSF0TIMER_ENA);
REG_WRITE(WDEVSLEEP0_CONF, REG_READ(WDEVSLEEP0_CONF) | WDEV_TSFUP0_ENA);
}
static void pwm_timer_start(uint32_t period)
{
ENTER_CRITICAL();
REG_WRITE(WDEVSLEEP0_CONF, REG_READ(WDEVSLEEP0_CONF) & (~WDEV_TSFUP0_ENA));
REG_WRITE(WDEVTSF0TIMER_ENA, REG_READ(WDEVTSF0TIMER_ENA) & (~WDEV_TSF0TIMER_ENA));
// suspend all task to void timer interrupt missed
// TODO, do we need lock interrupt here, I think interrupt context will not take 1ms long
// time low field to 0
@ -335,8 +338,11 @@ static void pwm_timer_start(uint32_t period)
pwm_obj->this_target = US_TO_TICKS(period);
// WARNING: pwm_obj->this_target should bigger than AHEAD_TICKS1
REG_WRITE(WDEVTSF0_TIMER_LO, pwm_obj->this_target - AHEAD_TICKS1);
// enable timer
REG_WRITE(WDEVTSF0TIMER_ENA, WDEV_TSF0TIMER_ENA);
REG_WRITE(WDEVSLEEP0_CONF, REG_READ(WDEVSLEEP0_CONF) | WDEV_TSFUP0_ENA);
//enable timer
pwm_timer_enable(1);
EXIT_CRITICAL();
}
static void pwm_timer_register(void (*handle)(void))
@ -574,7 +580,9 @@ esp_err_t pwm_stop(uint32_t stop_level_mask)
{
int16_t i = 0;
ENTER_CRITICAL();
pwm_timer_enable(0);
EXIT_CRITICAL();
uint32_t level_set = REG_READ(PERIPHS_GPIO_BASEADDR + GPIO_OUT_ADDRESS);
for (i = 0; i < pwm_obj->channel_num; i++) {

2
components/esp8266/include/esp8266/eagle_soc.h
View File

@ -148,12 +148,14 @@
#define WDEVTSF0_TIME_LO 0x3ff21004
#define WDEVTSF0_TIME_HI 0x3ff21008
#define WDEVSLEEP0_CONF 0x3ff21014
#define WDEVTSFSW0_LO 0x3ff21018
#define WDEVTSFSW0_HI 0x3ff2101C
#define WDEVTSF0_TIMER_LO 0x3ff2109c
#define WDEVTSF0_TIMER_HI 0x3ff210a0
#define WDEVTSF0TIMER_ENA 0x3ff21098
#define WDEV_TSF0TIMER_ENA BIT(31)
#define WDEV_TSFUP0_ENA BIT(31)
//Watch dog reg {{
#define PERIPHS_WDT_BASEADDR 0x60000900