UART terminal (firmware output)

autoscroll

Firmware

eth_http — web client (DHCP+TCP+HTTP)

Load a custom firmware: .bin (raw flash), .hex (Intel HEX), .elf (loadable segments + symbols), or a .map file for the symbol table only. Firmware files boot immediately. Nothing runs until you press Boot preset or load a file.

Network gateway

offline — using the scripted network (netsim)

When connected, all Ethernet frames are sent to a real network stack (openhw-gw + gVisor) instead of netsim. Run openhw-gw locally first. Note: GitHub Pages serves https, which blocks plain ws:// — serve this page over http:// when using a gateway.

Machine state

0instructions

0.0MIPS

0batches

0rounds

—PC

—SP

—XPSR

—firmware

GPIO

LTDC display

scanout idle

OLED SSD1306 (I2C)

no OLED firmware

TFT ILI9341 (SPI)

no TFT firmware

Buzzer (TIM PWM)

no buzzer firmware

Speaker (I2S)

no audio firmware

RTC DS3231 (I2C)

no RTC firmware

Peripherals

Memory Watch

Address (hex, e.g. 0x40023830) Label (optional)

Live 32-bit reads each frame. Poke a hex value to write it. Reads are 32-bit aligned.

CAN injection

CAN ID (hex, 11-bit, e.g. 123) Data (up to 8 hex bytes, space-separated, e.g. 48 45 4C 4C 4F 21 21 21 = "HELLO!!!")

Boot can_host_rx (or can_demo) first, then inject a frame — the firmware receives it on its CAN RX FIFO and prints the ID + data. Standard 11-bit frames only.