Knowing the RP2040

Introduction

1. What this Book is About
2. The SDK functions
3. The Examples
4. Whom this Book is For
5. Acknowledgments
6. Updates
7. How to Send Feedback

The RP2040 Architecture

1. Processor Subsystem
2. Bus Fabric
3. Address Map
4. Clock Generation
5. Memory
6. PIO
7. Peripherals
8. IOs
9. Future RP Microcontrollers?

The Cortex-M0+ Processor Cores

1. Unprivileged and Privileged Execution
2. Debugger Support
3. Memory Protection Unit (MPU)
4. Instruction Set
5. SIO
6. Systick Timer
7. Selected SDK Functions
8. Example

Reset, Interrupts and Power Control

1. Reset
2. Interrupts
3. Power Control

Memory, Addresses and DMA

1. Memory in the RP2040
2. Addresses
3. Direct Memory Access (DMA)
4. DMA Usage Examples

Clock Generation, Timer, Watchdog and RTC

1. Clock Generation
2. Timer
3. Watchdog
4. RTC

GPIO, Pad and PWM

1. GPIO Overview
2. Function Select
3. PADs
4. Digital Input and Output
5. GPIO Interrupts
6. PWM

The Programmable I/O (PIO)

1. The PIO State Machines
2. The FIFOs
3. Programmer’s Model
4. PIO Configuration
5. Interrupt (IRQ) Flags
6. The Instructions
7. Flow Control
8. Coding, Compiling and Running PIO Programs
9. PIO Assembly Language
10. Selected SDK Functions
11. Examples

Asynchronous Serial Communication: the UARTs

1. Framing
2. FIFOs
3. Control Signals and Hardware Flow Control
4. Baud Rate Generation
5. UART Status and Interrupts
6. Pins Options
7. Selected SDK Functions
8. Using the UART Registers
9. Example

Communication Using I²C

1. I²C Basics
2. I²C in the RP2040
3. Selected SDK Functions
4. Slave Library
5. Examples

Communication Using SPI

1. SPI Basics
2. SPI in the RP2040
3. Selected SDK Functions
4. Example

Analog Input: the ADC

1. Overview
2. Modes of Operation
3. Accuracy of the ADC
4. Temperature Sensor
5. Selected SDK Functions
6. Example

A Brief Introduction to the USB Controller

1. USB Basics
2. Hardware
3. Device Classes
4. TinyUSB
5. Using the USB
6. The HID Device Class
7. Example - Emulating a PC Keyboard
8. Example - Connecting a PC Keyboard to the Pi Pico
9. Example - Serial USB Adapter

Conclusion

Appendix A - CMake Files for RP2040 Programs

Appendix B - Using stdio

1. Selected pico_stdio Functions
2. Selected pico_stdio_uart Functions
3. Selected pico_stdio_usb Functions
4. The printf Function

Appendix C - Debugging Using the SWD Port

1. Picoprobe Connections
2. Software Installation
3. Debugging from the Command Line
4. Debugging from inside Visual Code

Appendix D - Accessing the RP2040 Registers

1. Registers Addresses and Basic Access
2. Special Write Operations
3. Using the SDK Functions for GPIO Output