led_strip: support invert output

led_strip/include/led_strip_types.h

@@ -22,6 +22,9 @@ typedef struct led_strip_t *led_strip_handle_t;
 typedef struct {
     uint32_t strip_gpio_num; /*!< GPIO number that used by LED strip */
     uint32_t max_leds;       /*!< Maximum LEDs in a single strip */
+    struct {
+        uint32_t invert_out: 1; /*!< Invert output signal */
+    } flags;
 } led_strip_config_t;
 
 #ifdef __cplusplus

led_strip/src/led_strip_rmt_dev.c

@@ -90,6 +90,7 @@ esp_err_t led_strip_new_rmt_device(const led_strip_config_t *led_config, const l
         .resolution_hz = resolution,
         .trans_queue_depth = 4,
         .flags.with_dma = rmt_config->flags.with_dma,
+        .flags.invert_out = led_config->flags.invert_out,
     };
     ESP_GOTO_ON_ERROR(rmt_new_tx_channel(&rmt_chan_config, &rmt_strip->rmt_chan), err, TAG, "create RMT TX channel failed");