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docs: update code example for I2C slave write

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Linda
2024-10-11 16:34:17 +08:00
parent 9ac6e10a1b
commit b02d7060f0
2 changed files with 15 additions and 16 deletions
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14
docs/en/api-reference/peripherals/i2c.rst
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@@ -88,7 +88,7 @@ The I2C driver offers following services:
Resource Allocation
^^^^^^^^^^^^^^^^^^^
Both I2C master bus and I2C slave bus, when supported, are represented by :cpp:type:`i2c_bus_handle_t` in the driver. The available ports are managed in a resource pool that allocates a free port on request.
The I2C master bus is represented by :cpp:type:`i2c_master_bus_handle_t` in the driver. The available ports are managed in a resource pool that allocates a free port on request.
Install I2C master bus and device
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -451,20 +451,20 @@ Simple example for writing data to FIFO:
i2c_slave_config_t i2c_slv_config = {
.addr_bit_len = I2C_ADDR_BIT_LEN_7, // 7-bit address
.clk_source = I2C_CLK_SRC_DEFAULT, // set the clock source
.i2c_port = 0, // set I2C port number
.i2c_port = TEST_I2C_PORT, // set I2C port number
.send_buf_depth = 256, // set TX buffer length
.scl_io_num = 2, // SCL GPIO number
.sda_io_num = 1, // SDA GPIO number
.scl_io_num = I2C_SLAVE_SCL_IO, // SCL GPIO number
.sda_io_num = I2C_SLAVE_SDA_IO, // SDA GPIO number
.slave_addr = 0x58, // slave address
};
i2c_bus_handle_t i2c_bus_handle;
ESP_ERROR_CHECK(i2c_new_slave_device(&i2c_slv_config, &i2c_bus_handle));
i2c_slave_dev_handle_t slave_handle;
ESP_ERROR_CHECK(i2c_new_slave_device(&i2c_slv_config, &slave_handle));
for (int i = 0; i < DATA_LENGTH; i++) {
data_wr[i] = i;
}
ESP_ERROR_CHECK(i2c_slave_transmit(i2c_bus_handle, data_wr, DATA_LENGTH, 10000));
ESP_ERROR_CHECK(i2c_slave_transmit(slave_handle, data_wr, DATA_LENGTH, 10000));
I2C Slave Read
~~~~~~~~~~~~~~