So, we have finished our first Raspberry Pi Pico tutorial. By doing this procedure, the Raspberry Pi Pico will run the program when it is power up. You need to select Raspberry Pi Pico and then name the file as “main.py” and click on save. When you save the code, it will show you a popup as shown below, asking where you want to save the file. ![]() Timer.init(freq=2.5, mode=Timer.PERIODIC, callback=ledblink) The led.toggle() is used to change the state of the led from HIGH to LOW or LOW to HIGH. The “ freq” parameter is used to determine the frequency delay of each callback. This delay can be provided as “ PERIODIC” by using the “ mode” parameter. In this init() method, we can callback a function with some delay. Actually the Timer() has an in-built method named as init(). Now, we need to create a function ledblink() to provide the timer. The Timer() function allows us to use the built-in timer on the Raspberry Pi Pico. I passed two parameters into the Pin() function that is Led and Pin.OUT where the Led is representing the GPIO pin and the Pin.OUT is used to set that GPIO pin as an OUTPUT pin respectively. In my case I made an object by using “led” in the code below. The Pin() function can be called to make an object. We have a machine library in MicroPython which includes all the basics built-in libraries. Now you can refer the following code to blink an LED of the Raspberry Pi Pico. Click on this and follow the installation as per instructed on the window. When you will connect the Pico board you can see under the Interpreter selection menu “ MicroPython (Raspberry Pi Pico)”. Press the button and hold it until you connect the Pico board to the PC or Laptop via USB port. The BOOTSEL button on my board is shown above highlighted red. On the Pico board you can see a White Push Button that is marked as “BOOTSEL”. Now you need to follow the below steps to install the Micropython framework on Raspberry Pi Pico. This can be called as interpreter selection menu. The green section is for selecting the device or python version we are using. In the picture you can see the red circled section has the basic debugging tools. The following Picture is a snapshot of the Thonny IDE. When the installation has been completed we need to perform some basic setup of the Thonny IDE. Installation of Thonny IDE and MicroPython Framework On Raspberry Pi PicoĪt first, you need to install the Thonny IDE to program the Raspberry Pi Pico. I connected the LED to the GPIO 1 or Pin number 2 and the GND pin is connected to the Ground. The following schematic diagram can be referring to connect an LED with Raspberry Pi Pico. The Pico has 26 GPIO pins which are labeled as Green in the picture below. The pin description of the Raspberry Pi Pico has been displayed in the below picture. the presence of the On-chip PLL allows us to vary the core frequency. The RP2040 microcontroller has cortex m0+ at up to 133MHz.Built-in Temperature Sensor, Accurate Clock and Timer on-chip.264KB of SRAM, and 2MB of on-board Flash Memory.Pico board consists of 2 SPI, 2 I2C, 2 UART, 3 12-bit ADC and 16 controllable PWM channels.Raspberry Pi Pico has 26 multi-function GPIO pins and 8 Programmable Input/output (PIO) state machines for custom peripheral support.Following are the key features of the Raspberry Pi Pico board. ![]() Raspberry Pi Pico is a low-cost, high-performance microcontroller board with multi-function GPIO pins. Note that TP4 is not intended to be used externally, and TP5 is not really recommended to be used as it will only swing from 0V to the LED forward voltage.įeatures of the Raspberry Pi Pico Development Board ![]() TP6 can be used to drive the system into mass-storage USB programming mode (by shorting it low at power-up). TP1, TP2 and TP3 can be used to access the USB signals instead of using the micro-USB port. The square pads are generally used as the Test Points (TP1 – TP6) which can be accessed if required, for example if using as a surface mount module. Let’s see what we have at the bottom side of the Pico PCB board in the above image. The red circled button is a white push button that can be used as a boot loader button. The blue colored circle is representing the built-in Led which is internally connected to the GPIO25 pin. ![]() It has an in-built LED alongside to the USB-Connector. If you look at the top, you will find the RP2040 microcontroller chip is placed at the center of the board that is marked in pink circle. It has 3-pin ARM Serial Wire Debug (SWD) that is marked in light brown circle in the picture above, the yellow circle represents the On-board USB1.1. Raspberry Pi Pico is a 40 pin 21x51 ‘DIP’ style 1mm thick PCB with 0.1" through-hole pins also with edge castellation. Let’s see what we have on the Raspberry Pi Pico board.
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