Shrike Examples

🟢 Beginner    🟡 Intermediate    🔴 Advanced

#	Example	Folder Name	Category	Difficulty	Why
1	LED Blink	led_blink	Getting Started	🟢 Beginner	Single output signal, no state
2	Breathing LED	breathing_led	Getting Started	🟢 Beginner	Simple PWM counter, single module
3	Button Debouncer	button_debouncer	Getting Started	🟢 Beginner	Basic FSM, introduces synchronous logic
4	LED PMOD	pmod_led_blink	GPIO & I/O	🟢 Beginner	Direct pin drive, PMOD pinout awareness
5	Logic Gates	logic_gates	Digital Logic	🟢 Beginner	Pure combinational, no clock needed
6	4-Bit Counter	counter_4bit	Signal & Timing	🟢 Beginner	Sequential logic, introduces registers
7	PMOD Patterns	pmod_patterns	GPIO & I/O	🟡 Intermediate	Sequenced output, simple state machine
8	GPIO Extender 8-Pin	gpio_extender_8pin	GPIO & I/O	🟡 Intermediate	FPGA-to-RP2040 IO bridge, bus awareness
9	GPIO Extender 14-Pin	gpio_extender_14pin	GPIO & I/O	🟡 Intermediate	FPGA-to-RP2040 IO bridge, wider bus
10	I2C LED	i2c_led	Communication Protocols	🟡 Intermediate	I2C state machine, clock stretching awareness
11	SPI Loopback LED	spi_loopback_led	Communication Protocols	🟡 Intermediate	SPI shift register, MISO/MOSI routing
12	UART LED	uart_led	Communication Protocols	🟡 Intermediate	UART RX framing, baud clock generation
13	Morse Blink	morse_blink	Communication Protocols	🟡 Intermediate	UART input, timing/state machine, serial-to-LED translation
14	UART ALU	uart_alu	Communication Protocols	🟡 Intermediate	UART + datapath, multi-module design
15	PLL Oscillator	pll_oscillator	Signal & Timing	🟡 Intermediate	PLL primitive instantiation, clock domain
16	PWM 4-Channel	pwm_4ch	Signal & Timing	🟡 Intermediate	Multi-channel counter, duty cycle control
17	7-Segment Display Clock	seven_seg_clock	Signal & Timing	🟡 Intermediate	BCD conversion, multiplexed display drive
18	Ultrasonic Sensor	ultrasonic_sensor	Sensors & Peripherals	🟡 Intermediate	Pulse timing, echo measurement FSM
19	WS2812 LED	ws2812_led	Sensors & Peripherals	🟡 Intermediate	Precise bit-bang timing, serial protocol
20	ASK Modulator	ask_modulator	Signal & Timing	🔴 Advanced	RF modulation concepts, carrier + data mixing
21	Stack Processor	stack_processor	Processors & CPUs	🔴 Advanced	Custom ISA, stack-based execution, SPI host
22	Vector-4 CPU	vector4_cpu	Processors & CPUs	🔴 Advanced	Full 4-bit SAP CPU: ALU, PC, registers, decode
23	Vector-8 CPU	vector8_cpu	Processors & CPUs	🔴 Advanced	Full 8-bit SAP CPU: wider datapath, more opcodes

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Summary by Difficulty

Difficulty	Count	Examples
🟢 Beginner	6	led_blink, breathing_led, button_debouncer, pmod_led_blink, logic_gates, counter_4bit
🟡 Intermediate	13	pmod_patterns, gpio_extender_8pin, gpio_extender_14pin, i2c_led, spi_loopback_led, uart_led, morse_blink, uart_alu, pll_oscillator, pwm_4ch, seven_seg_clock, ultrasonic_sensor, ws2812_led
🔴 Advanced	4	ask_modulator, stack_processor, vector4_cpu, vector8_cpu

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