openchirp/ccbootutil

How openchirp/ccbootutil works

ccbootutil is a command-line and scriptable interface for programming and inspecting TI CC2538/CC26xx bootloaders over a serial connection. The user supplies a port, command, and—when flashing or verifying—an ELF file. The CLI opens the port and dispatches bootloader operations; programming uses ELF regions to erase and write flash, verification compares CRCs, and the combined command resets after success. The graph reflects the sampled main.go and flash.go; bootloader protocol internals are provided by an external library and were not inspected.

Main entry points: main.go Command CLI · flash.go Flash image

Components 13

Other components

User
Terminal I/O
ccboot library
ELF image
TI bootloader

Connections 20

User → Command CLI: invokes README.md
Command CLI → Serial port: opens port main.go
Command CLI → ccboot library: creates device main.go
Command CLI → Bootloader commands: dispatches commands main.go
Command CLI → Memory inspection: dispatches read main.go
Command CLI → CCFG updates: dispatches updates main.go
Command CLI → Flash image: calls flash main.go
Command CLI → Verify image: calls verify main.go
Command CLI → Serial console: starts console main.go
Serial console → Terminal I/O: copies streams main.go
Serial console → Serial port: reads and writes main.go
Bootloader commands → ccboot library: calls operations main.go
Memory inspection → ccboot library: reads memory main.go
CCFG updates → ccboot library: sets fields main.go
Flash image → ELF image: parses regions flash.go
Verify image → ELF image: reads regions flash.go
Flash image → ccboot library: erases and writes flash.go
Verify image → ccboot library: requests CRC flash.go
ccboot library → TI bootloader: communicates with
User → ELF image: provides image README.md

Drawn by GitDiagram on November 11, 2026 from the repository's file tree, README and source files. Read as Markdown ·

How openchirp/ccbootutil works

Main entry points: main.go Command CLI · flash.go Flash image

Components 13

CLI orchestration

Command CLI main.go
Serial port main.go
Serial console main.go

Device operations

Bootloader commands main.go
Memory inspection main.go
CCFG updates main.go

Image programming

Flash image flash.go
Verify image flash.go

Other components

User
Terminal I/O
ccboot library
ELF image
TI bootloader

Connections 20

User → Command CLI: invokes README.md
Command CLI → Serial port: opens port main.go
Command CLI → ccboot library: creates device main.go
Command CLI → Bootloader commands: dispatches commands main.go
Command CLI → Memory inspection: dispatches read main.go
Command CLI → CCFG updates: dispatches updates main.go
Command CLI → Flash image: calls flash main.go
Command CLI → Verify image: calls verify main.go
Command CLI → Serial console: starts console main.go
Serial console → Terminal I/O: copies streams main.go
Serial console → Serial port: reads and writes main.go
Bootloader commands → ccboot library: calls operations main.go
Memory inspection → ccboot library: reads memory main.go
CCFG updates → ccboot library: sets fields main.go
Flash image → ELF image: parses regions flash.go
Verify image → ELF image: reads regions flash.go
Flash image → ccboot library: erases and writes flash.go
Verify image → ccboot library: requests CRC flash.go
ccboot library → TI bootloader: communicates with
User → ELF image: provides image README.md

Drawn by GitDiagram on November 11, 2026 from the repository's file tree, README and source files. Read as Markdown ·