44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <i2cdev.h>
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#include <stdio.h>
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void task(void *ignore)
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{
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i2c_dev_t dev = { 0 };
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dev.cfg.sda_io_num = CONFIG_EXAMPLE_I2C_MASTER_SDA;
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dev.cfg.scl_io_num = CONFIG_EXAMPLE_I2C_MASTER_SCL;
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#if HELPER_TARGET_IS_ESP32
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dev.cfg.master.clk_speed = CONFIG_EXAMPLE_I2C_CLOCK_HZ; // 100kHz
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#endif
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while (1)
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{
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esp_err_t res;
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printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n");
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printf("00: ");
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for (uint8_t addr = 3; addr < 0x78; addr++)
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{
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if (addr % 16 == 0)
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printf("\n%.2x:", addr);
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dev.addr = addr;
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res = i2c_dev_probe(&dev, I2C_DEV_WRITE);
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if (res == 0)
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printf(" %.2x", addr);
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else
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printf(" --");
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}
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printf("\n\n");
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vTaskDelay(pdMS_TO_TICKS(1000));
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}
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}
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void app_main()
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{
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// Init i2cdev library
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ESP_ERROR_CHECK(i2cdev_init());
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// Start task
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xTaskCreate(task, "i2c_scanner", configMINIMAL_STACK_SIZE * 3, NULL, 5, NULL);
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}
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