- ESP32
- Example_ShieldBox
+example_test_007_01:
+ <<: *example_test_template
+ tags:
+ - ESP32
+ - Example_I2C_CCS811_SENSOR
+
UT_001_01:
<<: *unit_test_template
tags:
return i2c_master_read_static(cmd_handle, data, data_len, ack);
} else {
if(data_len == 1) {
- return i2c_master_read_byte(cmd_handle, data, I2C_MASTER_NACK);
+ return i2c_master_read_byte(cmd_handle, data, I2C_MASTER_NACK);
} else {
esp_err_t ret;
if((ret = i2c_master_read_static(cmd_handle, data, data_len - 1, I2C_MASTER_ACK)) != ESP_OK) {
}
return i2c_master_read_byte(cmd_handle, data + data_len - 1, I2C_MASTER_NACK);
}
- }
+ }
}
static void IRAM_ATTR i2c_master_cmd_begin_static(i2c_port_t i2c_num)
clear_bus_cnt++;
if(clear_bus_cnt >= I2C_ACKERR_CNT_MAX) {
i2c_master_clear_bus(i2c_num);
- clear_bus_cnt = 0;
+ clear_bus_cnt = 0;
}
ret = ESP_FAIL;
} else {
}
xSemaphoreGive(p_i2c->slv_rx_mux);
return cnt;
-}
\ No newline at end of file
+}
**Note:** The following pin assignments are used by default, you can change them with `i2cconfig` command at any time.
-| | SDA | SCL |
-| ---------------- | ------ | ------ |
-| ESP32 I2C Master | GPIO18 | GPIO19 |
-| Sensor | SDA | SCL |
-
-- master:
- - GPIO18 is assigned as the data signal of I2C master port
- - GPIO19 is assigned as the clock signal of I2C master port
-
-- connection:
- - connect SDA/SCL of CCS811 sensor with GPIO18/GPIO19
+| | SDA | SCL | GND | Other | VCC |
+| ---------------- | ------ | ------ | ---- | ----- | ---- |
+| ESP32 I2C Master | GPIO18 | GPIO19 | GND | GND | 3.3V |
+| Sensor | SDA | SCL | GND | WAK | VCC |
**Note: ** There’s no need to add an external pull-up resistors for SDA/SCL pin, because the driver will enable the internal pull-up resistors itself.
Enter `make menuconfig` if you are using GNU Make based build system or enter `idf.py menuconfig` if you are using CMake based build system. Then go into `Example Configuration` menu.
- You can choose whether or not to save command history into flash in `Store command history in flash` option.
+- You can set the maximum number of command line arguments under `Maximum number of command line arguments` option.
+- You can set the command line buffer length under `Command line buffer length` option.
### Build and Flash
* I don’t find any available address when running `i2cdetect` command.
* Make sure your wiring connection is right.
* Some sensor will have a “wake up” pin, via which user can put the sensor into a sleep mode. So make sure your sensor in **not** in the sleep state.
- * Have a try resetting you I2C device, and then re-run `i2cdetect`.
+ * Reset you I2C device, and then run `i2cdetect` again.
* I can’t get the right content when running `i2cdump` command.
- * Currently the `i2cdump` only support those who have the same content length of registers inside the I2C device. For example, if a device have three legal addresses, and the content length at these address are 1 byte, 2 bytes and 4 bytes. Then you should not expect this command to dump the register correctly.
+ * Currently the `i2cdump` only support those who have the same content length of registers inside the I2C device. For example, if a device have three register addresses, and the content length at these address are 1 byte, 2 bytes and 4 bytes. In this case you should not expect this command to dump the register correctly.
+* I really input argument correctly, but the command line “discard” the last few arguements from time to time.
+ * Enlarge the maximum number of arguments in the menuconfig.
--- /dev/null
+from __future__ import print_function
+import os
+import sys
+test_fw_path = os.getenv("TEST_FW_PATH")
+if test_fw_path and test_fw_path not in sys.path:
+ sys.path.insert(0, test_fw_path)
+import TinyFW
+import IDF
+
+EXPECT_TIMEOUT = 20
+
+
+@IDF.idf_example_test(env_tag='Example_I2C_CCS811_SENSOR')
+def test_i2ctools_example(env, extra_data):
+ # Get device under test, flash and start example. "i2ctool" must be defined in EnvConfig
+ dut = env.get_dut('i2ctools', 'examples/peripherals/i2c/i2c_tools')
+ dut.start_app()
+ dut.expect("esp32>", timeout=EXPECT_TIMEOUT)
+ # Get i2c address
+ dut.write("i2cdetect")
+ dut.expect("5b", timeout=EXPECT_TIMEOUT)
+ # Get chip ID
+ dut.write("i2cget -c 0x5b -r 0x20 -l 1")
+ dut.expect("0x81", timeout=EXPECT_TIMEOUT)
+ # Reset sensor
+ dut.write("i2cset -c 0x5b -r 0xFF 0x11 0xE5 0x72 0x8A")
+ dut.expect("OK", timeout=EXPECT_TIMEOUT)
+ # Get status
+ dut.write("i2cget -c 0x5b -r 0x00 -l 1")
+ dut.expect_any("0x10", timeout=EXPECT_TIMEOUT)
+ # Change work mode
+ dut.write("i2cset -c 0x5b -r 0xF4")
+ dut.expect("OK", timeout=EXPECT_TIMEOUT)
+ dut.write("i2cset -c 0x5b -r 0x01 0x10")
+ dut.expect("OK", timeout=EXPECT_TIMEOUT)
+ # Get new status
+ dut.write("i2cget -c 0x5b -r 0x00 -l 1")
+ dut.expect_any("0x98", "0x90", timeout=EXPECT_TIMEOUT)
+
+
+if __name__ == '__main__':
+ test_i2ctools_example()
command history. If this option is enabled, initalizes a FAT filesystem
and uses it to store command history.
+config MAX_CMD_ARGUMENTS
+ int "Maximum number of command line arguments"
+ default 16
+ range 8 256
+ help
+ maximum number of command line arguments to parse
+
+config MAX_CMD_LENGTH
+ int "Command line buffer length"
+ default 256
+ range 256 512
+ help
+ length of command line buffer, in bytes
+
endmenu
/* Check chip address: "-c" option */
int chip_addr = i2cset_args.chip_address->ival[0];
/* Check register address: "-r" option */
- int data_addr = -1;
+ int data_addr = 0;
if (i2cset_args.register_address->count) {
data_addr = i2cset_args.register_address->ival[0];
}
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, chip_addr << 1 | WRITE_BIT, ACK_CHECK_EN);
- if (data_addr != -1) {
+ if (i2cset_args.register_address->count) {
i2c_master_write_byte(cmd, data_addr, ACK_CHECK_EN);
}
for (int i = 0; i < len; i++) {
/* Initialize the console */
esp_console_config_t console_config = {
- .max_cmdline_args = 8,
- .max_cmdline_length = 256,
+ .max_cmdline_args = CONFIG_MAX_CMD_ARGUMENTS,
+ .max_cmdline_length = CONFIG_MAX_CMD_LENGTH,
#if CONFIG_LOG_COLORS
.hint_color = atoi(LOG_COLOR_CYAN)
#endif
projects / esp-idf / commitdiff