10 LED patterns using 16 LEDs-Raspberry Pi Pico Simulator

I have tried to create 10 LED patterns using the free Pi Pico Simulator. I have to admit that there will be some mistakes or might have missed scope for improvements. I appreciate your feedback to make this better.

I have used Wokwi Raspberry Pi Pico Arduino Simulator to code, compile and see the results.

• 16 LEDs are used - 8 RED LEDs and 8 Blue LEDs
• You can change the LED colours using diagram.json file
• visit the link above and sub links on the above page for more information on the online Pico simulator
• Pico is a small powerful and versatile board from Raspberry Pi. It has RP2040 MCU on it which has a cortexM0+ processor.
• for more details, refer to Pico datasheets and user guide from the below links

https://datasheets.raspberrypi.org/rp2040/rp2040-datasheet.pdf

https://datasheets.raspberrypi.org/pico/getting-started-with-pico.pdf

https://hackaday.io/project/177082-raspberry-pi-pico-emulator

The simulated output on the online Pi Pico Simulator

The Code

/**
Controlling the Pi Pico GPIO with direct register access (SIO registers + IO Bank 0 registers)
Code example from the Raspberry Pi Pico Deep Pico - The Deep Dive course:
https://hackaday.io/course/178733-raspberry-pi-pico-and-rp2040-the-deep-dive
*/
/* Enables the SIO function for the given pin, by writing to the relevant CTRL register.
(e.g. GPIO0_CTRL at 0x40014004) */
void enable_sio(int pin) {
uint32_t *PIN_CTRL_REG = (uint32_t*)IO_BANK0_BASE + pin * 2 + 1;
*PIN_CTRL_REG = 5; // 5 = SIO function
}
void setup() {
// Enable the SIO function for pins GP0 to GP7
for (int i = 0; i < 16; i++) {
enable_sio(i);
}
// Enable output on pins GP0 to GP7:
// sio_hw->gpio_oe points to 0xd0000020 (GPIO_OE)
sio_hw->gpio_oe = 0b1111111111111111;
// Set initial pin pattern
// sio_hw->gpio_out points to 0xd0000010 (GPIO_OUT)
sio_hw->gpio_out = 0b1010101010101010;
}
void loop() {
#if 0
//pattern 1
for (int i = 0; i < 20; i++) {
sio_hw->gpio_togl = 0b1111111111111111;
delay(420 - 20 * i);
}
//pattern 2
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_out = 65535 >> i;
delay(300);
}
//pattern 3
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_out = (65535 >> i);
sio_hw->gpio_togl = 0b1111111111111111;
delay(300);
}
//pattern 4
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_out = 1 << i;
delay(100);
}
#endif
//pattern 5
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_out = 32767 >> i;
delay(100);
}
//pattern 6
sio_hw->gpio_out = 65535;
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_togl = 0b1111111111111111;
delay(200);
}
//pattern 7
sio_hw->gpio_out = 65280;
for (int i = 0; i < 8; i++)
{
sio_hw->gpio_togl = 0b1111111111111111;
delay(300);
}
//pattern 8
sio_hw->gpio_out = 61680;
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_togl = 0b1111111111111111;
delay(300);
}
//pattern 9
sio_hw->gpio_out = 52428;
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_togl = 0b1111111111111111;
delay(300);
}
//pattern 10
sio_hw->gpio_out = 43690;
for (int i = 0; i < 16; i++)
{
sio_hw->gpio_togl = 0b1111111111111111;
delay(300);
}
}

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