espressif/extended_vfs

uploaded 5 months ago

## GPIO Simple This example shows how to configure and flip GPIO by POSIX APIs, this decreases dependence on hardware and platform. ## How to Use Example Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. ### Hardware Required * A development board based on espressif SoC * A USB cable for power supply and programming * A LED connecting to your configured GPIO and GND ### Configure the Project Open the project configuration menu (`idf.py menuconfig`). In the `Example Configuration` menu: * Set the LED GPIO number used for the signal in the `GPIO Pin Number` option. * Set the LED GPIO blinking count in the `GPIO Pin Testing coun` option. ### Build and Flash Run `idf.py -p PORT flash monitor` to build, flash and monitor the project. (To exit the serial monitor, type ``Ctrl-]``.) ## Example Output As you run the example, you will see the LED blinking and following log: ``` (0) cpu_start: Starting scheduler on APP CPU. I (315) ext_vfs: Extended VFS version: 0.1.0 I (315) gpio: GPIO[9]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 Opening device /dev/gpio/9 for writing OK, fd=3. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. Set GPIO-9 to be 1 OK. Set GPIO-9 to be 0 OK. I (20335) gpio: GPIO[9]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 Close device OK. ```

## I2C BH1750 Example This example shows how to configure I2C bus and read data from BH1750(light intensity sensor) by POSIX APIs, this decreases dependence on hardware and platform. ## How to Use Example Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. ### Hardware Required * A development board based on espressif SoC * A USB cable for power supply and programming * A BH1750 connecting to your configured GPIO, Power and GND, if your development board doesn't integrate BH1750 senor ### Configure the Project Open the project configuration menu (`idf.py menuconfig`). In the `Example Configuration` menu: * Set the I2C GPIO number used for the signal in the following option: - I2C SDA Pin Number - I2C SCL Pin Number * Set the reading sensor data count in the `I2C Testing Count of Reading Sensor's Data` option. ### Build and Flash Run `idf.py -p PORT flash monitor` to build, flash and monitor the project. (To exit the serial monitor, type ``Ctrl-]``.) ## Example Output As you run the example, you will see the light intensity value from following log: ``` I (0) cpu_start: Starting scheduler on APP CPU. I (328) ext_vfs: Extended VFS version: 0.1.0 Opening device /dev/i2c/0 for writing OK, fd=3. Sensor val: 190.00 [Lux]. Sensor val: 173.33 [Lux]. Sensor val: 173.33 [Lux]. Sensor val: 173.33 [Lux]. Sensor val: 173.33 [Lux]. Sensor val: 176.67 [Lux]. Sensor val: 180.00 [Lux]. Sensor val: 186.67 [Lux]. Sensor val: 190.00 [Lux]. Sensor val: 193.33 [Lux]. Close device OK. ```

## I2C TT21100 Example This example shows how to configure I2C bus and read data from TT21100(touch pad) by POSIX APIs, this decreases dependence on hardware and platform. ## How to Use Example Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. ### Hardware Required * A development board based on espressif SoC * A USB cable for power supply and programming * A TT21100 connecting to your configured GPIO, Power and GND, if your development board doesn't integrate TT21100 ### Configure the Project Open the project configuration menu (`idf.py menuconfig`). In the `Example Configuration` menu: * Set the I2C GPIO number used for the signal in the following option: - I2C SDA Pin Number - I2C SCL Pin Number - TT21100 Ready Pin Number * Set the reading sensor data count in the `I2C Testing Count of Reading Sensor's Data` option. ### Build and Flash Run `idf.py -p PORT flash monitor` to build, flash and monitor the project. (To exit the serial monitor, type ``Ctrl-]``.) ## Example Output As you run the example, you will see following log: ``` I (0) cpu_start: Starting scheduler on APP CPU. I (315) ext_vfs: Extended VFS version: 0.1.0 I (315) gpio: GPIO[3]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 TT21100 touch screen is initialized, and start reading touch point information: ``` Then you can touch the TT21100 touch pad and see touch point location information as following: ``` X0=122 Y0=146 X0=122 Y0=146 X0=122 Y0=146 X0=122 Y0=146 X0=122 Y0=146 X0=122 Y0=146 X0=152 Y0=169 X0=152 Y0=169 X0=152 Y0=169 X0=152 Y0=169 X0=152 Y0=169 X0=152 Y0=169 X0=153 Y0=169 X0=153 Y0=169 X0=217 Y0=170 X0=217 Y0=170 X0=219 Y0=170 X0=220 Y0=170 X0=221 Y0=169 X0=221 Y0=169 X0=217 Y0=168 X0=217 Y0=168 X0=106 Y0=186 X0=106 Y0=186 X0=106 Y0=186 X0=106 Y0=186 X0=106 Y0=186 X0=106 Y0=186 X0=106 Y0=186 X0=106 Y0=186 X0=68 Y0=173 X0=68 Y0=173 X0=68 Y0=173 X0=67 Y0=173 X0=67 Y0=173 X0=66 Y0=171 X0=65 Y0=166 X0=65 Y0=166 X0=95 Y0=106 X0=95 Y0=106 X0=95 Y0=106 X0=95 Y0=106 X0=94 Y0=106 X0=93 Y0=106 X0=93 Y0=106 X0=93 Y0=106 X0=91 Y0=79 X0=91 Y0=79 X0=91 Y0=79 X0=90 Y0=79 X0=87 Y0=80 X0=84 Y0=82 X0=82 Y0=84 X0=80 Y0=85 X0=80 Y0=85 X0=54 Y0=106 X0=54 Y0=106 X0=54 Y0=106 X0=53 Y0=108 X0=52 Y0=110 X0=50 Y0=111 X0=50 Y0=112 X0=49 Y0=112 X0=49 Y0=112 X0=48 Y0=141 X0=48 Y0=141 X0=48 Y0=141 X0=47 Y0=141 X0=47 Y0=141 X0=46 Y0=141 X0=45 Y0=141 X0=45 Y0=141 X0=67 Y0=152 X0=67 Y0=152 X0=67 Y0=152 X0=67 Y0=152 X0=67 Y0=152 X0=67 Y0=152 X0=66 Y0=152 X0=66 Y0=152 X0=78 Y0=165 X0=78 Y0=165 X0=78 Y0=164 X0=78 Y0=164 X0=78 Y0=163 X0=79 Y0=163 X0=79 Y0=162 X0=79 Y0=162 X0=140 Y0=139 X0=140 Y0=139 X0=140 Y0=139 X0=140 Y0=139 X0=140 Y0=139 X0=141 Y0=138 X0=142 Y0=137 X0=144 Y0=134 X0=144 Y0=134 X0=178 Y0=128 X0=178 Y0=128 X0=178 Y0=128 I (4145) gpio: GPIO[3]| InputEn: 0| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 Test done and de-initialize TT21100 touch screen. ```

## LEDC Simple This example shows how to configure LEDC by POSIX APIs, this decreases dependence on hardware and platform. ## How to Use Example Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. ### Hardware Required * A development board based on espressif SoC * A USB cable for power supply and programming * A LED connecting to your configured LEDC output GPIO and GND ### Configure the Project Open the project configuration menu (`idf.py menuconfig`). In the `Example Configuration` menu: * Set the LEDC GPIO Frequency value in the `LEDC Frequency(Hz)` option. * Set the LEDC output GPIO number used for the signal in the `LEDC Output Pin` option. ### Build and Flash Run `idf.py -p PORT flash monitor` to build, flash and monitor the project. (To exit the serial monitor, type ``Ctrl-]``.) ## Example Output As you run the example, you will see the LED's brightness changes and following log: ``` I (0) cpu_start: Starting scheduler on APP CPU. I (333) ext_vfs: Extended VFS version: 0.1.0 Opening device /dev/ledc/0 for writing OK, fd=3. Set LEDC duty to be 0 Set LEDC duty to be 20 Set LEDC duty to be 40 Set LEDC duty to be 60 Set LEDC duty to be 80 Set LEDC duty to be 0 Set LEDC duty to be 20 Set LEDC duty to be 40 Set LEDC duty to be 60 Set LEDC duty to be 80 Close device OK. ```

## SPI Master Simple This example shows how to configure SPI master by POSIX APIs, this decreases dependence on hardware and platform. ## How to Use Example Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. And this example should be used together with [SPI Slave Simple](../spi_slave_simple/). ### Hardware Required * 2 development boards based on espressif SoC * 2 USB cables for power supply and programming * 5 DuPont lines connecting SPI pins and GND between 2 development boards ### Configure the Project Open the project configuration menu (`idf.py menuconfig`). In the `Example Configuration` menu: * Select SPI port in the `Select SPI Device` option, please note that not all SoC supports `SPI3` * Set the SPI pins number in the following options according to your development board: - `SPI CS Pin Number` - `SPI SCLK Pin Number` - `SPI MOSI Pin Number` - `SPI MISO Pin Number` * Set transmission count in the `SPI Testing Count of Transmitting Data` ### Build and Flash Run `idf.py -p PORT flash monitor` to build, flash and monitor the project. (To exit the serial monitor, type ``Ctrl-]``.) ## Example Output As you run the example, you will see the following log: ``` I (0) cpu_start: Starting scheduler on APP CPU. I (345) ext_vfs: Extended VFS version: 0.3.0 Opening device /dev/spi/2 for writing OK, fd=3. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. Write text total 32 bytes into device OK. ```

## SPI Slave Simple This example shows how to configure SPI slave by POSIX APIs, this decreases dependence on hardware and platform. ## How to Use Example Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. And this example should be used together with [SPI Master Simple](../spi_master_simple/). ### Hardware Required * 2 development boards based on espressif SoC * 2 USB cables for power supply and programming * 5 DuPont lines connecting SPI pins and GND between 2 development boards ### Configure the Project Open the project configuration menu (`idf.py menuconfig`). In the `Example Configuration` menu: * Select SPI port in the `Select SPI Device` option, please note that not all SoC supports `SPI3` * Set the SPI pins number in the following options according to your development board: - `SPI CS Pin Number` - `SPI SCLK Pin Number` - `SPI MOSI Pin Number` - `SPI MISO Pin Number` ### Build and Flash Run `idf.py -p PORT flash monitor` to build, flash and monitor the project. (To exit the serial monitor, type ``Ctrl-]``.) ## Example Output As you run the example ,you will see the following log: ``` I (0) cpu_start: Starting scheduler on APP CPU. I (344) ext_vfs: Extended VFS version: 0.3.0 Opening device /dev/spi/2 for writing OK, fd=3. Receive total 32 bytes from device: SPI Tx 0 Receive total 32 bytes from device: SPI Tx 1 Receive total 32 bytes from device: SPI Tx 2 Receive total 32 bytes from device: SPI Tx 3 Receive total 32 bytes from device: SPI Tx 4 Receive total 32 bytes from device: SPI Tx 5 Receive total 32 bytes from device: SPI Tx 6 Receive total 32 bytes from device: SPI Tx 7 Receive total 32 bytes from device: SPI Tx 8 Receive total 32 bytes from device: SPI Tx 9 Receive total 32 bytes from device: SPI Tx 10 Receive total 32 bytes from device: SPI Tx 11 ```