Overview

The transcript summarizes a lecture on embedded system programming concepts, development environments, and debugging techniques. It provides an overview of key processor families (AVR, ARM, RISC-V), languages (C, Rust, Python), tools (GCC, Arduino, VS Code), and communication protocols (USB, UART). The lecture analyzes tradeoffs between performance, cost, power, and ease of use. Action items include researching processors, comparing development environments, adding I/O devices to boards, and experimenting with languages.

Assignment

group assignment:

browse through the data sheet for your microcontroller
compare the performance and development workflows for other architectures

individual assignment:

write a program for a microcontroller development board that you made,to interact (with local input &/or output devices) and communicate (with remote wired or wireless devices)
extra credit: use different languages &/or development environments
extra credit: connect external components to the board

WorkFlow

Seeed Studio XIAO RP2040

specifications

Item	Value
CPU	Dual-core ARM Cortex M0+ processor up to 133MHz
Flash Memory	2MB
SRAM	264KB
Digital I/O Pins	11
Analog I/O Pins	4
PWM Pins	11
I2C interface	1
SPI interface	1
UART interface	1
Power supply and downloading interface	Type-C
Power	3.3V/5V DC
Dimensions	20×17.5×3.5mm

Solder the Seeed Studio XIAO RP2040 body and pin headers using a gas soldering iron (GP-510SET) with a (GP-510RT-2.4C) tip.
Gas soldering irons are convenient because they are cordless and do not require electricity.

Micro:bit v1

specifications

BBC Micro:bit	V1	V2
Processor	Nordic nRF51822	Nordic nRF52833
Flash memory	256 KB	512 KB
RAM	16KB	128KB
Speed	16 MHz	64 MHz
Bluetooth	Bluetooth 4.0	Bluetooth 5.1 with Bluetooth Low Energy (BLE)
Radio communication	2.4 GHz radio (80 channels)	2.4 GHz radio (80 channels)
Buttons	Two programmable (A and B) and one system (reset)	Two programmable (A and B) and one system (power/reset)
On/off switch	None	Press and hold the rear power button
Touchpad	None	Touch-sensitive logo
Microphone	None	Onboard Knowles SPU0410LR5H-QB-7 MEMS microphone (with LED indicator)
Display	5x5 programmable LED matrix (25 LEDs in total)	5x5 programmable LED matrix (25 LEDs in total)
Speaker	None	Onboard JIANGSU HUANENG MLT-8530 (up to 80 dB)
Motion sensor and compass	LSM303AGR	LSM303AGR
Temperature sensor	On-board temperature sensor	On-core NRF52
Edge connector	25 pins	25 pins