Overview
An increasing number of ECUs need bootloaders to update firmware in the field via CAN. The use of a complete UDS stack for the bootloader is mostly unsuitable, because of the large flash memory footprint.
Emotas has developed a new UDS Bootloader needs only few memory resources. The bootloader supports only the necessary services. 16 KiB of flash memory are sufficient for the emotas bootloader – and it is still UDS compatible.
The UDSonCAN Bootloader is available for different 16- and 32-bit micro controllers and can easily be adapted to other targets. It is delivered as ANSI-C source code and thus can be extended by customers e.g. with a password protection mechanism, firmware encryption or a manufacturer-specific back door.
UDS services and limitations
- 10h DiagnosticSessionControl
- 11h ECUReset
- 22h ReadDataByIdentifier
- 27h SecurityAccess
- 31h RoutineControl
- 34h RequestDownload (support of fixed/compiled memory address in target only)
- 36h TransferData (download only)
- 37h RequestTransferExit
If additional UDS services or specific "update sequences" are required, we offer an extension or customization of the bootloader according to your requirements.
Highlights
- UDS compatible
- data transfer via ISO/TP
- only little flash resources needed
System requirements
- ANSI-C compiler
Scope of delivery/Licensing
- Bootloader source code (ANSI-C compatible)
- driver for CAN controller, CPU and flash access
- ready to run example application
- user manual and reference manual in electronic format
- incl. 6 (project license) .. 24 (site license) months support by e-mail or phone (depending on license)