Merge branch 'fix/ths_enbale_charge_ic' into 'master'

fix(ulp_example): enable the LDO chip at power-up See merge request ae_group/esp-iot-solution!1000
espressif · May 22, 2024 · d7b0715 · d7b0715
2 parents 8481471 + 35ac021
commit d7b0715
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diff --git a/examples/ulp/lp_cpu/lp_environment_sensor/README.md b/examples/ulp/lp_cpu/lp_environment_sensor/README.md
@@ -20,16 +20,17 @@ The example hardware has been open-sourced on [OSHW-Hub](https://oshwhub.com/esp
 
 - Hardware Connection：
 
-| ESP32-C6 | AHT21B | 2.9-inch e-paper display |
-| :------: | :----: | :-----------------------: |
-|  GPIO6   | SDA    |      |
-|  GPIO7   | SCL    |      |
-|  GPIO15  |        | SCL  |
-|  GPIO18  |        | SDA  |
-|  GPIO19  |        | RES  |
-|  GPIO20  |        | DC   |
-|  GPIO21  |        | CS   |
-|  GPIO22  |        | BUSY |
+| ESP32-C6 | AHT21B | 2.9-inch e-paper display | LDO CHIP |
+| :------: | :----: | :----------------------: | :------: |
+|  GPIO2   |        |                          |    EN    |
+|  GPIO6   |  SDA   |                          |          |
+|  GPIO7   |  SCL   |                          |          |
+|  GPIO15  |        |           SCL            |          |
+|  GPIO18  |        |           SDA            |          |
+|  GPIO19  |        |           RES            |          |
+|  GPIO20  |        |            DC            |          |
+|  GPIO21  |        |            CS            |          |
+|  GPIO22  |        |           BUSY           |          |
 
 ### Configure the project
 
@@ -64,10 +65,10 @@ By default, this example configured to disable Rainmaker data reporting, HTTP we
 ```
 I (139) main_task: Started on CPU0
 I (142) main_task: Calling app_main()
-I (147) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
-I (156) gpio: GPIO[19]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
-I (165) gpio: GPIO[20]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
-I (174) gpio: GPIO[22]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:2 
+I (147) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (156) gpio: GPIO[19]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (165) gpio: GPIO[20]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (174) gpio: GPIO[22]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:2
 I (3035) LP_Environment_Sensor: e-paper refresh done.
 I (3036) LP_Environment_Sensor: Enter deep sleep.
 ...
@@ -76,10 +77,10 @@ I (139) main_task: Started on CPU0
 I (142) main_task: Calling app_main()
 wake up by LP CPU.
 I (148) LP_Environment_Sensor: temperature: 25.918961, humidity: 40.086460
-I (156) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
-I (166) gpio: GPIO[19]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
-I (174) gpio: GPIO[20]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
-I (184) gpio: GPIO[22]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:2 
+I (156) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (166) gpio: GPIO[19]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (174) gpio: GPIO[20]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (184) gpio: GPIO[22]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:2
 I (3044) LP_Environment_Sensor: e-paper refresh done.
 I (3045) LP_Environment_Sensor: Enter deep sleep.
 ...

diff --git a/examples/ulp/lp_cpu/lp_environment_sensor/main/lp_environment_sensor.c b/examples/ulp/lp_cpu/lp_environment_sensor/main/lp_environment_sensor.c
@@ -48,6 +48,7 @@ extern const uint8_t lp_core_main_bin_start[] asm("_binary_lp_core_main_bin_star
 extern const uint8_t lp_core_main_bin_end[]   asm("_binary_lp_core_main_bin_end");
 
 /* E-paper power control pin, set to 1 to power off the screen, set to 0 to power on the screen. */
+#define LDO_CHIP_EN                 GPIO_NUM_2
 #define EPAPER_PWR_CTRL             GPIO_NUM_8
 #define EPAPER_BUS_HOST             SPI2_HOST
 #define EPAPER_REFRESH_BIT          BIT(0)
@@ -289,6 +290,15 @@ static void epaper_task(void *pvParameters)
 
 void app_main(void)
 {
+    /*!< Config charge IC enable IO */
+    gpio_config_t io_conf = {
+        .pin_bit_mask = (1ULL << LDO_CHIP_EN),
+        .mode = GPIO_MODE_OUTPUT,
+    };
+    gpio_config(&io_conf);
+    gpio_set_level(LDO_CHIP_EN, 1);
+    gpio_hold_en(LDO_CHIP_EN);
+
     /* To refresh the e-paper screen, it takes at least 1250ms. */
     esp_ths_event_group = xEventGroupCreate();
     if (esp_ths_event_group == NULL) {