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51 lines
3.5 KiB
Markdown
51 lines
3.5 KiB
Markdown
1 year ago
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# Examples for the BSP `raspberrypi-rp2040`
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1 year ago
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## Demos
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All demos that run on the [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/) can also be run on the [RP2040-Plus](https://www.waveshare.com/rp2040-plus.htm) without modification.
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1 year ago
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- [adc](src/adc.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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This example takes periodic samples of the temperature sensor and prints it to the UART using the stdlib logging facility.
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- [blinky](src/blinky.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Blinks the LED on the board.
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- [blinky core1](src/blinky_core1.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Blinks the LED on the board using the second CPU.
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- [flash program](src/flash_program.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Writes and reads data into the flash.
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- [gpio clk](src/gpio_clk.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Enables a `CLKOUT` mode on GPIO0.
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- [i2c bus scan](src/i2c_bus_scan.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Prints all I²C devices on UART0 (Pin 0,1) attached to I²C on SCL=GPIO4, SDA=GPIO5.
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- [pwm](src/pwm.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Slowly blinks the LED on the Pico with a smooth blinking using PWM.
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- [random](src/random.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Showcases how to use the internal random generator.
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- [spi master](src/spi_master.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Showcases how to use the SPI host controller.
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- [squarewave](src/squarewave.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Showcases how to use the PIO to emit a basic square wave.
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- [uart](src/uart.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Showcases how to use the UART together with `std.log`.
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- [usb device](src/usb_device.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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A really basic example for a raw USB device. You can use the Python 3 script [`scripts/usb_device_loopback.py`](scripts/usb_device_loopback.py) to test the USB device.
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- [usb hid](src/usb_hid.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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A really basic example how to implement a USB HID device. You can use the Python 3 script [`scripts/hid_test.py`](scripts/hid_test.py) to test the HID device.
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- [ws2812](src/ws2812.zig) on [RaspberryPi Pico](https://www.raspberrypi.com/products/raspberry-pi-pico/)
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Showcases how to control one WS2812 LED attached to GPIO23.
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1 year ago
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- [tiles](src/tiles.zig) on [RP2040-Matrix](https://www.waveshare.com/rp2040-matrix.htm)
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Showcases how to control the LED matrix on the development board to do a simple color flipper effect.
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## Flashing
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You can flash all examples using either your file browser by dragging the example `.uf2` file from `zig-out/firmware/` to the directory.
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Or you can use [`picotool`](https://github.com/raspberrypi/picotool) to flash a uf2 file:
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```sh-session
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[user@host] raspberrypi-rp2040/ $ picotool load -x zig-out/firmware/${file}.uf2
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Loading into Flash: [==============================] 100%
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The device was rebooted to start the application.
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[user@host] raspberrypi-rp2040/ $
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```
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1 year ago
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