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ESP32s3 I2c0 SCL一直高电平,没有时钟输出,SDA也是一直高电平
日志显示初始化成功 I (4197) driver-codec: i2s driver init success I (9197) driver-codec: I2C_MASTER_NUM=0,mode=1,speed=100000 I (9197) driver-codec: I2C initialized successfully I (9207) driver-codec: i2c_read cnt = 0, error = -1 代码如下: #define I2C0_MASTER_SCL_IO 18 /*!< GPIO number used for I2C master clock */ #define I2C0_MASTER_SDA_IO 17 /*!< GPIO number used for I2C master data */ static esp_err_t i2c_master_init(void) { int i2c_master_port = I2C_MASTER_NUM; i2c_config_t conf = { .mode = I2C_MODE_MASTER, .sda_io_num = I2C0_MASTER_SDA_IO, .scl_io_num = I2C0_MASTER_SCL_IO, .sda_pullup_en = GPIO_PULLUP_ENABLE, .scl_pullup_en = GPIO_PULLUP_ENABLE, .master.clk_speed = I2C_MASTER_FREQ_HZ, .clk_flags = 0, }; esp_err_t err = i2c_param_config(i2c_master_port, &conf); if (err != ESP_OK) { return err; } ESP_LOGI(TAG, "I2C_MASTER_NUM=%d,mode=%d,speed=%d",i2c_master_port,conf.mode,conf.master.clk_speed); return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0); } uint16_t AW88266A_i2c_read(unsigned char reg_addr) { int ret; uint8_t cnt = 0; uint8_t data_buff[2] = {0}; uint16_t data = 0; while (cnt < I2C_RETRY_TIMES) { ret = i2c_master_write_read_device(I2C_MASTER_NUM, AW88266A_CODEC_ADDR, ®_addr, 1, data_buff, 2, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS); if (ret != 0) ESP_LOGI(TAG, "i2c_read cnt = %d, error = %dn", cnt, ret); else break; cnt++; } data = (((data_buff[0] << 8) & 0xff00) | (data_buff[1] & 0x00ff)); ESP_LOGI(TAG, "i2c_read data = %dn", data); return data; } |
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