From 7c9e3b60c62cbe32852a701a10476c55554377a2 Mon Sep 17 00:00:00 2001 From: morris Date: Thu, 29 Dec 2022 11:33:43 +0800 Subject: [PATCH] rmt: no auto light sleep if xtal is working as the clock source --- components/driver/rmt/rmt_common.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/components/driver/rmt/rmt_common.c b/components/driver/rmt/rmt_common.c index 33af3fc8fa1..24da4b6f022 100644 --- a/components/driver/rmt/rmt_common.c +++ b/components/driver/rmt/rmt_common.c @@ -156,6 +156,14 @@ esp_err_t rmt_select_periph_clock(rmt_channel_handle_t chan, rmt_clock_source_t #if SOC_RMT_SUPPORT_XTAL case RMT_CLK_SRC_XTAL: periph_src_clk_hz = esp_clk_xtal_freq(); +#if CONFIG_PM_ENABLE + sprintf(chan->pm_lock_name, "rmt_%d_%d", group->group_id, channel_id); // e.g. rmt_0_0 + // XTAL will be power down in the light sleep (predefined low power modes) + // acquire a NO_LIGHT_SLEEP lock here to prevent the system go into light sleep automatically + ret = esp_pm_lock_create(ESP_PM_NO_LIGHT_SLEEP, 0, chan->pm_lock_name, &chan->pm_lock); + ESP_RETURN_ON_ERROR(ret, TAG, "create NO_LIGHT_SLEEP lock failed"); + ESP_LOGD(TAG, "install NO_LIGHT_SLEEP lock for RMT channel (%d,%d)", group->group_id, channel_id); +#endif // CONFIG_PM_ENABLE break; #endif // SOC_RMT_SUPPORT_XTAL #if SOC_RMT_SUPPORT_REF_TICK