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Alex B.
2025-06-19 01:49:34 -04:00
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@@ -119,13 +119,22 @@ Smart speakers
## I2C Pins
The schematic excerpt provided below illustrates the wiring configuration for the __SDA__ and __SCL__ lines. Specifically, the __SDA__ line is connected to _GPIO 8_, while the __SCL__ line is connected to _GPIO 9_ on the ESP32-S3 module.
<img src="assets/ESP32-Uno-Board-Module-Pinout.png" width="50%"/>
The image of the PCB board below depicts the physical locations of the __SDA__ and __SCL__ terminals.
The schematic excerpt provided below illustrates the wiring configuration for the __SDA__ and __SCL__ lines. Specifically, the __SDA__ line is connected to _GPIO 18_, while the __SCL__ line is connected to _GPIO 19_ on the ESP32-C3 Wroom module. The image of the PCB board below depicts the physical locations of the __SDA__ and __SCL__ terminals.
<img src="assets/ESP32-C3-BreadBoardAdapterPinout.png" width="50%"/>
``` C
i2c_config_t conf = {
    .mode = I2C_MODE_MASTER,
    .sda_io_num = 18,
    .scl_io_num = 19,
    .sda_pullup_en = GPIO_PULLUP_ENABLE,
    .scl_pullup_en = GPIO_PULLUP_ENABLE,
    .master.clk_speed = 100000,
};
i2c_param_config(I2C_NUM_0, &conf);
i2c_driver_install(I2C_NUM_0, conf.mode, 0, 0, 0);
```
### Micropython LED Blinky Code
``` python