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address

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This commit is contained in:
Alex B.
2024-07-08 19:26:44 -04:00
parent ddd3be2fc9
commit c6b83dae1c
16 changed files with 2473 additions and 2356 deletions
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15
ESP32-IDF_BMP280/main/main.c
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@@ -105,6 +105,8 @@ static esp_err_t i2c_master_init(void)
static esp_err_t i2c_driver_initialize(void)
{
int i2c_master_port = 0;
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = GPIO_NUM_21,
@@ -112,9 +114,10 @@ static esp_err_t i2c_driver_initialize(void)
.scl_io_num = GPIO_NUM_22,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_MASTER_FREQ_HZ,
.clk_flags= 0,
};
return i2c_param_config(0, &conf);
return i2c_param_config(i2c_master_port, &conf);
/*int i2c_master_port = 0;
@@ -134,23 +137,23 @@ static esp_err_t i2c_driver_initialize(void)
void app_main(void)
{
//i2c_driver_initialize();
ESP_ERROR_CHECK(i2c_master_init());
ESP_ERROR_CHECK(i2c_driver_initialize());
//ESP_ERROR_CHECK(i2c_master_init());
i2c_driver_install(I2C_NUM_0, I2C_MODE_MASTER, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
uint8_t address = 76;
uint8_t address = 0x76;
i2c_cmd_handle_t command = i2c_cmd_link_create();
i2c_master_start(command);
i2c_master_write_byte(command, (address << 1) | I2C_MASTER_WRITE, 0x1); // 0x1 -> checl ACK from slave
i2c_master_stop(command);
esp_err_t cmd_ret = i2c_master_cmd_begin(I2C_NUM_0, command, 50 / portTICK_PERIOD_MS);
esp_err_t cmd_ret = i2c_master_cmd_begin(I2C_NUM_0, command, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(command);
i2c_driver_delete(I2C_NUM_0);
if (cmd_ret == ESP_OK)
ESP_LOGI(TAG, "I2C device found");
ESP_LOGI(TAG, "I2C device found at address %X", address);
else
ESP_LOGI(TAG, "error %X", cmd_ret);