Version 1.0.0

Initial version.

main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_build_get_property(project_dir PROJECT_DIR)
+idf_component_register(SRCS "main.c" INCLUDE_DIRS "" REQUIRES driver)

main/main.c

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+#include "driver/i2c_master.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#define I2C_PORT (I2C_NUM_MAX - 1)
+
+void app_main(void)
+{
+    i2c_master_bus_config_t i2c_bus_config = {
+        .clk_source = I2C_CLK_SRC_DEFAULT,
+        .i2c_port = I2C_PORT,
+        .scl_io_num = GPIO_NUM_22, // In accordance with used chip.
+        .sda_io_num = GPIO_NUM_21, // In accordance with used chip.
+        .glitch_ignore_cnt = 7,
+        .flags.enable_internal_pullup = true,
+    };
+    i2c_master_bus_handle_t i2c_bus_handle;
+    i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle);
+    for (uint8_t i = 0; i <= 127; ++i)
+    {
+        if (i2c_master_probe(i2c_bus_handle, i, 1000 / portTICK_PERIOD_MS) == ESP_OK)
+        {
+            printf("Address 0x%02X\n", i);
+        }
+    }
+}