Merge branch 'feature/i2c_support_on_esp8684_esp32h2' into 'master'

i2c: support i2c on esp32c2 and esp32h2

Closes IDF-3918

See merge request espressif/esp-idf!16444
This commit is contained in:
Kevin (Lao Kaiyao)
2022-02-28 13:59:02 +08:00
44 changed files with 565 additions and 670 deletions

View File

@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*
@@ -318,6 +318,7 @@ struct I2CMasterFix {
i2c_port_t port;
};
#if CONFIG_SOC_I2C_SUPPORT_SLAVE
struct I2CSlaveFix {
I2CSlaveFix(CreateAnd flags, i2c_port_t port_arg = 0, size_t buffer_size = 64) : i2c_conf(), port(port_arg)
{
@@ -344,6 +345,7 @@ struct I2CSlaveFix {
i2c_config_t i2c_conf;
i2c_port_t port;
};
#endif // CONFIG_SOC_I2C_SUPPORT_SLAVE
struct I2CCmdLinkFix
{

View File

@@ -376,6 +376,7 @@ TEST_CASE("I2CMaster syncronous transfer (read and write)")
}
}
#if SOC_I2C_SUPPORT_SLAVE
TEST_CASE("I2CSlave parameter configuration fails")
{
CMockFixture fix;
@@ -458,3 +459,4 @@ TEST_CASE("I2CSlave read calls driver functions correctly")
CHECK(read_buffer[i] == WRITE_BUFFER[i]);
}
}
#endif // SOC_I2C_SUPPORT_SLAVE

View File

@@ -155,6 +155,7 @@ vector<uint8_t> I2CMaster::sync_transfer(I2CAddress i2c_addr,
return composed_transfer.do_transfer(i2c_num, i2c_addr)[0];
}
#if CONFIG_SOC_I2C_SUPPORT_SLAVE
I2CSlave::I2CSlave(I2CNumber i2c_number,
SCL_GPIO scl_gpio,
SDA_GPIO sda_gpio,
@@ -191,6 +192,7 @@ int I2CSlave::read_raw(uint8_t *buffer, size_t buffer_len, chrono::milliseconds
{
return i2c_slave_read_buffer(i2c_num.get_value(), buffer, buffer_len, (TickType_t) timeout.count() / portTICK_PERIOD_MS);
}
#endif // CONFIG_SOC_I2C_SUPPORT_SLAVE
I2CWrite::I2CWrite(const vector<uint8_t> &bytes, chrono::milliseconds driver_timeout)
: I2CTransfer<void>(driver_timeout), bytes(bytes)

View File

@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -400,6 +400,7 @@ public:
size_t read_n_bytes);
};
#if CONFIG_SOC_I2C_SUPPORT_SLAVE
/**
* @brief Responsible for initialization and de-initialization of an I2C slave peripheral.
*/
@@ -451,6 +452,7 @@ public:
*/
virtual int read_raw(uint8_t* buffer, size_t buffer_len, std::chrono::milliseconds timeout);
};
#endif // CONFIG_SOC_I2C_SUPPORT_SLAVE
/**
* Implementation for simple I2C writes, which can be executed by \c I2CMaster::transfer().

View File

@@ -54,8 +54,9 @@ struct MasterFixture {
vector<uint8_t> data;
};
#if SOC_I2C_SUPPORT_SALVE
// TODO The I2C driver tests are disabled, so disable them here, too. Probably due to no runners.
#if !TEMPORARY_DISABLED_FOR_TARGETS(ESP32S2, ESP32S3)
#if !TEMPORARY_DISABLED_FOR_TARGETS(ESP32S2, ESP32S3, ESP8684)
static void i2c_slave_read_raw_byte(void)
{
@@ -258,4 +259,5 @@ TEST_CASE_MULTIPLE_DEVICES("I2CMaster Composed transfer", "[cxx i2c][test_env=UT
i2c_master_composed_trans, i2c_slave_composed_trans);
#endif //TEMPORARY_DISABLED_FOR_TARGETS(ESP32S2, ESP32S3)
#endif // SOC_I2C_SUPPORT_SALVE
#endif // __cpp_exceptions

View File

@@ -65,14 +65,14 @@ To run this example, you should have one ESP development board (e.g. ESP32-WROVE
**Note:** It is recommended to add external pull-up resistors for SDA/SCL pins to make the communication more stable, though the driver will enable internal pull-up resistors.
#### Pin Assignment(esp32c3):
#### Pin Assignment(esp32c3, esp32c2, esp32h2):
**Note:** The following pin assignments are used by default, you can change these in the `menuconfig` .
| | SDA | SCL |
| ------------------------- | ------ | ------ |
| ESP32-C3 I2C Master(Slave)| GPIO5 | GPIO6 |
| BH1750 Sensor | SDA | SCL |
| | SDA | SCL |
| ------------------------------------------- | ------ | ------ |
| ESP32-C3/ESP32-C2/ESP32-H2 I2C Master(Slave)| GPIO5 | GPIO6 |
| BH1750 Sensor | SDA | SCL |
- master:
- GPIO5 is assigned to the data signal of the I2C master port
@@ -121,70 +121,70 @@ sensor val: 386.67 [Lux]
TASK[0] MASTER READ FROM SLAVE
*******************
====TASK[0] Slave buffer data ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
====TASK[0] Master read ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
*******************
TASK[1] MASTER READ FROM SLAVE
*******************
====TASK[1] Slave buffer data ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
====TASK[1] Master read ====
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
*******************
TASK[0] MASTER WRITE TO SLAVE
*******************
----TASK[0] Master write ----
0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19
1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29
2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39
3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49
4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59
5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69
6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79
7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89
0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19
1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29
2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39
3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49
4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59
5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69
6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79
7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89
----TASK[0] Slave read: [128] bytes ----
0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19
1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29
2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39
3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49
4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59
5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69
6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79
7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89
0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19
1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29
2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39
3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49
4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59
5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69
6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79
7a 7b 7c 7d 7e 7f 80 81 82 83 84 85 86 87 88 89
```
## Troubleshooting

View File

@@ -3,7 +3,7 @@ menu "Example Configuration"
menu "I2C Master"
config I2C_MASTER_SCL
int "SCL GPIO Num"
default 6 if IDF_TARGET_ESP32C3
default 6 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2 || IDF_TARGET_ESP32H2
default 2 if IDF_TARGET_ESP32S3
default 19 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S2
help
@@ -11,7 +11,7 @@ menu "Example Configuration"
config I2C_MASTER_SDA
int "SDA GPIO Num"
default 5 if IDF_TARGET_ESP32C3
default 5 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2 || IDF_TARGET_ESP32H2
default 1 if IDF_TARGET_ESP32S3
default 18 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S2
help
@@ -20,7 +20,7 @@ menu "Example Configuration"
config I2C_MASTER_PORT_NUM
int "Port Number"
default 1 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
default 0 if IDF_TARGET_ESP32C3
default 0 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2 || IDF_TARGET_ESP32H2
help
Port number for I2C Master device.
@@ -32,6 +32,7 @@ menu "Example Configuration"
endmenu
menu "I2C Slave"
depends on SOC_I2C_NUM > 1
config I2C_SLAVE_SCL
int "SCL GPIO Num"
default 5

View File

@@ -1,3 +1,8 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
/* i2c - Example
For other examples please check:
@@ -25,11 +30,14 @@ static const char *TAG = "i2c-example";
#define RW_TEST_LENGTH 128 /*!< Data length for r/w test, [0,DATA_LENGTH] */
#define DELAY_TIME_BETWEEN_ITEMS_MS 1000 /*!< delay time between different test items */
#define I2C_SLAVE_SCL_IO CONFIG_I2C_SLAVE_SCL /*!< gpio number for i2c slave clock */
#define I2C_SLAVE_SDA_IO CONFIG_I2C_SLAVE_SDA /*!< gpio number for i2c slave data */
#define I2C_SLAVE_NUM I2C_NUMBER(CONFIG_I2C_SLAVE_PORT_NUM) /*!< I2C port number for slave dev */
#define I2C_SLAVE_TX_BUF_LEN (2 * DATA_LENGTH) /*!< I2C slave tx buffer size */
#define I2C_SLAVE_RX_BUF_LEN (2 * DATA_LENGTH) /*!< I2C slave rx buffer size */
#if SOC_I2C_NUM > 1
#define I2C_SLAVE_SCL_IO CONFIG_I2C_SLAVE_SCL /*!< gpio number for i2c slave clock */
#define I2C_SLAVE_SDA_IO CONFIG_I2C_SLAVE_SDA /*!< gpio number for i2c slave data */
#define I2C_SLAVE_NUM I2C_NUMBER(CONFIG_I2C_SLAVE_PORT_NUM) /*!< I2C port number for slave dev */
#define I2C_SLAVE_TX_BUF_LEN (2 * DATA_LENGTH) /*!< I2C slave tx buffer size */
#define I2C_SLAVE_RX_BUF_LEN (2 * DATA_LENGTH) /*!< I2C slave rx buffer size */
#define ESP_SLAVE_ADDR CONFIG_I2C_SLAVE_ADDRESS /*!< ESP32 slave address, you can set any 7bit value */
#endif
#define I2C_MASTER_SCL_IO CONFIG_I2C_MASTER_SCL /*!< gpio number for I2C master clock */
#define I2C_MASTER_SDA_IO CONFIG_I2C_MASTER_SDA /*!< gpio number for I2C master data */
@@ -40,7 +48,6 @@ static const char *TAG = "i2c-example";
#define BH1750_SENSOR_ADDR CONFIG_BH1750_ADDR /*!< slave address for BH1750 sensor */
#define BH1750_CMD_START CONFIG_BH1750_OPMODE /*!< Operation mode */
#define ESP_SLAVE_ADDR CONFIG_I2C_SLAVE_ADDRESS /*!< ESP32 slave address, you can set any 7bit value */
#define WRITE_BIT I2C_MASTER_WRITE /*!< I2C master write */
#define READ_BIT I2C_MASTER_READ /*!< I2C master read */
#define ACK_CHECK_EN 0x1 /*!< I2C master will check ack from slave*/
@@ -50,6 +57,7 @@ static const char *TAG = "i2c-example";
SemaphoreHandle_t print_mux = NULL;
#if SOC_I2C_NUM > 1
/**
* @brief test code to read esp-i2c-slave
* We need to fill the buffer of esp slave device, then master can read them out.
@@ -101,6 +109,7 @@ static esp_err_t __attribute__((unused)) i2c_master_write_slave(i2c_port_t i2c_n
i2c_cmd_link_delete(cmd);
return ret;
}
#endif
/**
* @brief test code to operate on BH1750 sensor
@@ -162,7 +171,7 @@ static esp_err_t i2c_master_init(void)
return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
}
#if !CONFIG_IDF_TARGET_ESP32C3
#if SOC_I2C_NUM > 1
/**
* @brief i2c slave initialization
*/
@@ -205,7 +214,7 @@ static void i2c_test_task(void *arg)
{
int ret;
uint32_t task_idx = (uint32_t)arg;
#if !CONFIG_IDF_TARGET_ESP32C3
#if SOC_I2C_NUM > 1
int i = 0;
uint8_t *data = (uint8_t *)malloc(DATA_LENGTH);
uint8_t *data_wr = (uint8_t *)malloc(DATA_LENGTH);
@@ -232,7 +241,7 @@ static void i2c_test_task(void *arg)
xSemaphoreGive(print_mux);
vTaskDelay((DELAY_TIME_BETWEEN_ITEMS_MS * (task_idx + 1)) / portTICK_PERIOD_MS);
//---------------------------------------------------
#if !CONFIG_IDF_TARGET_ESP32C3
#if SOC_I2C_NUM > 1
for (i = 0; i < DATA_LENGTH; i++) {
data[i] = i;
}
@@ -297,7 +306,7 @@ static void i2c_test_task(void *arg)
void app_main(void)
{
print_mux = xSemaphoreCreateMutex();
#if !CONFIG_IDF_TARGET_ESP32C3
#if SOC_I2C_NUM > 1
ESP_ERROR_CHECK(i2c_slave_init());
#endif
ESP_ERROR_CHECK(i2c_master_init());

View File

@@ -2,14 +2,14 @@ menu "Example Configuration"
config I2C_MASTER_SCL
int "SCL GPIO Num"
default 6 if IDF_TARGET_ESP32C3
default 6 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2 || IDF_TARGET_ESP32H2
default 19 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
help
GPIO number for I2C Master clock line.
config I2C_MASTER_SDA
int "SDA GPIO Num"
default 5 if IDF_TARGET_ESP32C3
default 5 if IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32C2 || IDF_TARGET_ESP32H2
default 18 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
help
GPIO number for I2C Master data line.

View File

@@ -7,7 +7,7 @@
[I2C Tools](https://i2c.wiki.kernel.org/index.php/I2C_Tools) is a simple but very useful tool for developing I2C related applications, which is also famous in Linux platform. This example just implements some of basic features of [I2C Tools](https://i2c.wiki.kernel.org/index.php/I2C_Tools) based on [esp32 console component](https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/console.html). As follows, this example supports five command-line tools:
1. `i2cconfig`: It will configure the I2C bus with specific GPIO number, port number and frequency.
2. `i2cdetect`: It will scan an I2C bus for devices and output a table with the list of detected devices on the bus.
2. `i2cdetect`: It will scan an I2C bus for devices and output a table with the list of detected devices on the bus.
3. `i2cget`: It will read registers visible through the I2C bus.
4. `i2cset`: It will set registers visible through the I2C bus.
5. `i2cdump`: It will examine registers visible through the I2C bus.
@@ -30,6 +30,8 @@ To run this example, you should have any ESP32, ESP32-S and ESP32-C based develo
| ESP32-S2 I2C Master | GPIO18 | GPIO19 | GND | GND | 3.3V |
| ESP32-S3 I2C Master | GPIO1 | GPIO2 | GND | GND | 3.3V |
| ESP32-C3 I2C Master | GPIO5 | GPIO6 | GND | GND | 3.3V |
| ESP32-C2 I2C Master | GPIO5 | GPIO6 | GND | GND | 3.3V |
| ESP32-H2 I2C Master | GPIO5 | GPIO6 | GND | GND | 3.3V |
| Sensor | SDA | SCL | GND | WAK | VCC |
**Note: ** Theres no need to add an external pull-up resistors for SDA/SCL pin, because the driver will enable the internal pull-up resistors itself.
@@ -66,7 +68,7 @@ See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/l
==============================================================
i2c-tools> help
help
help
Print the list of registered commands
i2cconfig [--port=<0|1>] [--freq=<Hz>] --sda=<gpio> --scl=<gpio>
@@ -76,7 +78,7 @@ i2cconfig [--port=<0|1>] [--freq=<Hz>] --sda=<gpio> --scl=<gpio>
--sda=<gpio> Set the gpio for I2C SDA
--scl=<gpio> Set the gpio for I2C SCL
i2cdetect
i2cdetect
Scan I2C bus for devices
i2cget -c <chip_addr> [-r <register_addr>] [-l <length>]
@@ -96,17 +98,17 @@ i2cdump -c <chip_addr> [-s <size>]
-c, --chip=<chip_addr> Specify the address of the chip on that bus
-s, --size=<size> Specify the size of each read
free
free
Get the current size of free heap memory
heap
heap
Get minimum size of free heap memory that was available during program execu
tion
version
version
Get version of chip and SDK
restart
restart
Software reset of the chip
deep_sleep [-t <t>] [--io=<n>] [--io_level=<0|1>]
@@ -124,7 +126,7 @@ light_sleep [-t <t>] [--io=<n>]... [--io_level=<0|1>]...
--io=<n> If specified, wakeup using GPIO with given number
--io_level=<0|1> GPIO level to trigger wakeup
tasks
tasks
Get information about running tasks
```
@@ -143,14 +145,14 @@ esp32> i2cconfig --port=0 --sda=18 --scl=19 --freq=100000
```bash
esp32> i2cdetect
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- 5b -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- 5b -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
```
* Here we found the address of CCS811 is 0x5b.
@@ -159,7 +161,7 @@ esp32> i2cdetect
```bash
esp32> i2cget -c 0x5b -r 0x00 -l 1
0x10
0x10
```
* `-c` option to specify the address of I2C device (acquired from `i2cdetect` command).
@@ -175,7 +177,7 @@ I (734717) cmd_i2ctools: Write OK
esp32> i2cset -c 0x5b -r 0x01 0x10
I (1072047) cmd_i2ctools: Write OK
esp32> i2cget -c 0x5b -r 0x00 -l 1
0x98
0x98
```
* Here we change the mode from boot to application and set a proper measure mode (by writing 0x10 to register 0x01)
@@ -185,7 +187,7 @@ esp32> i2cget -c 0x5b -r 0x00 -l 1
```bash
esp32> i2cget -c 0x5b -r 0x02 -l 8
0x01 0xb0 0x00 0x04 0x98 0x00 0x19 0x8f
0x01 0xb0 0x00 0x04 0x98 0x00 0x19 0x8f
```
* The register 0x02 will output 8 bytes result, mainly including value of eCO~2~、TVOC and there raw value. So the value of eCO~2~ is 0x01b0 ppm and value of TVOC is 0x04 ppb.

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@@ -1,3 +1,8 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
/* cmd_i2ctools.c
This example code is in the Public Domain (or CC0 licensed, at your option.)
@@ -26,7 +31,7 @@ static const char *TAG = "cmd_i2ctools";
#if CONFIG_IDF_TARGET_ESP32S3
static gpio_num_t i2c_gpio_sda = 1;
static gpio_num_t i2c_gpio_scl = 2;
#elif CONFIG_IDF_TARGET_ESP32C3
#elif CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32H2 || CONFIG_IDF_TARGET_ESP8684
static gpio_num_t i2c_gpio_sda = 5;
static gpio_num_t i2c_gpio_scl = 6;
#else

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@@ -3,4 +3,4 @@
nvs, data, nvs, 0x9000, 0x6000,
phy_init, data, phy, 0xf000, 0x1000,
factory, app, factory, 0x10000, 1M,
storage, data, fat, , 1M,
storage, data, fat, , 0x80000,
1 # Name, Type, SubType, Offset, Size, Flags
3 nvs, data, nvs, 0x9000, 0x6000,
4 phy_init, data, phy, 0xf000, 0x1000,
5 factory, app, factory, 0x10000, 1M,
6 storage, data, fat, , 1M, storage, data, fat, , 0x80000,

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@@ -14,4 +14,4 @@ CONFIG_PARTITION_TABLE_FILENAME="partitions_example.csv"
CONFIG_FREERTOS_USE_TRACE_FACILITY=y
CONFIG_FREERTOS_USE_STATS_FORMATTING_FUNCTIONS=y
CONFIG_ESPTOOLPY_FLASHSIZE_4MB=y
CONFIG_ESPTOOLPY_FLASHSIZE_2MB=y