From: Advaith Menon <noreply-git@bp4k.net>
Date: Sun, 16 Nov 2025 22:57:21 +0000 (-0500)
Subject: Update GPIO Input Code, Add Output
X-Git-Url: https://git.devinivas.org/?a=commitdiff_plain;h=9a1411e3cfdbb1d9cc0638a9ee6bbba826613156;p=smartwatch.git

Update GPIO Input Code, Add Output
* Add gpio_reset_pin to change pin modes to GPIO
* See https://github.com/espressif/esp-idf/issues/11975 for more info
---

diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 3aeb4cc..ccd5c61 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -1,4 +1,4 @@
 idf_component_register(SRCS "hello_world_main.c"
                        INCLUDE_DIRS "."
-                       PRIV_REQUIRES spi_flash esp_driver_gpio
+                       PRIV_REQUIRES esp_driver_gpio
                        INCLUDE_DIRS "")
diff --git a/main/hello_world_main.c b/main/hello_world_main.c
index 08f0329..5017b86 100644
--- a/main/hello_world_main.c
+++ b/main/hello_world_main.c
@@ -9,9 +9,6 @@
 #include "sdkconfig.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
-#include "esp_chip_info.h"
-#include "esp_flash.h"
-#include "esp_system.h"
 #include "driver/gpio.h"
 
 #define BUTTON_WHITE 0
@@ -19,51 +16,37 @@
 #define BUTTON_YELLOW 11
 #define BUTTON_BLUE 18
 #define BUTTON_RED 15
+#define VIBRATOR 20
 
 void app_main(void)
 {
     printf("Hello world!\n");
 
-    /* Print chip information */
-    esp_chip_info_t chip_info;
-    uint32_t flash_size;
-    esp_chip_info(&chip_info);
-    printf("This is %s chip with %d CPU core(s), %s%s%s%s, ",
-           CONFIG_IDF_TARGET,
-           chip_info.cores,
-           (chip_info.features & CHIP_FEATURE_WIFI_BGN) ? "WiFi/" : "",
-           (chip_info.features & CHIP_FEATURE_BT) ? "BT" : "",
-           (chip_info.features & CHIP_FEATURE_BLE) ? "BLE" : "",
-           (chip_info.features & CHIP_FEATURE_IEEE802154) ? ", 802.15.4 (Zigbee/Thread)" : "");
-
-    unsigned major_rev = chip_info.revision / 100;
-    unsigned minor_rev = chip_info.revision % 100;
-    printf("silicon revision v%d.%d, ", major_rev, minor_rev);
-    if(esp_flash_get_size(NULL, &flash_size) != ESP_OK) {
-        printf("Get flash size failed");
-        return;
-    }
-
-    printf("%" PRIu32 "MB %s flash\n", flash_size / (uint32_t)(1024 * 1024),
-           (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
-
-    printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
-
+    ESP_ERROR_CHECK(gpio_reset_pin(BUTTON_WHITE));
     gpio_set_direction(BUTTON_WHITE, GPIO_MODE_INPUT);
     gpio_pullup_en(BUTTON_WHITE);
 
+    ESP_ERROR_CHECK(gpio_reset_pin(BUTTON_GREEN));
     gpio_set_direction(BUTTON_GREEN, GPIO_MODE_INPUT);
     gpio_pullup_en(BUTTON_GREEN);
 
+    ESP_ERROR_CHECK(gpio_reset_pin(BUTTON_YELLOW));
     gpio_set_direction(BUTTON_YELLOW, GPIO_MODE_INPUT);
     gpio_pullup_en(BUTTON_YELLOW);
 
+    ESP_ERROR_CHECK(gpio_reset_pin(BUTTON_BLUE));
     gpio_set_direction(BUTTON_BLUE, GPIO_MODE_INPUT);
     gpio_pullup_en(BUTTON_BLUE);
 
+    ESP_ERROR_CHECK(gpio_reset_pin(BUTTON_RED));
     gpio_set_direction(BUTTON_RED, GPIO_MODE_INPUT);
     gpio_pullup_en(BUTTON_RED);
 
+    ESP_ERROR_CHECK(gpio_reset_pin(VIBRATOR));
+    gpio_set_direction(VIBRATOR, GPIO_MODE_OUTPUT);
+    ESP_ERROR_CHECK(gpio_set_drive_capability(VIBRATOR, GPIO_DRIVE_CAP_2));
+
+    gpio_dump_io_configuration(stdout, (1ULL << VIBRATOR) | (1ULL << BUTTON_RED));
     /*
     for (int i = 10; i >= 0; i--) {
         printf("Restarting in %d seconds...\n", i);
@@ -74,12 +57,15 @@ void app_main(void)
     esp_restart();
     */
     while (1) {
+        /*
         printf("Button levels: [%d|%d|%d|%d|%d]\n",
                 gpio_get_level(BUTTON_WHITE),
                 gpio_get_level(BUTTON_GREEN),
                 gpio_get_level(BUTTON_YELLOW),
                 gpio_get_level(BUTTON_BLUE),
                 gpio_get_level(BUTTON_RED));
-        vTaskDelay(500 / portTICK_PERIOD_MS);
+                */
+        ESP_ERROR_CHECK(gpio_set_level(VIBRATOR, !gpio_get_level(BUTTON_RED)));
+        vTaskDelay(100 / portTICK_PERIOD_MS);
     }
 }