User's Manual

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iotTech Corporation, Taiwan
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ITM-FCC3F1 Datasheet
7.Software Introduction
7-1 Software Architecture
Figure 1: The Relationship Between User APP & ROM CODE and Patch
Relationship between APP & ROM Code & Patch
OPL1000 consists of two MCU’s of ARM Cortex M3 and Cortex M0. The so-called OPL1000 APP
Development refers to the application procedure for development users on M3 MCU of OPL1000. The initial
M3, M0 firmware of OPL1000 is comprised in the Chip as ROM CODE. Furthermore, as functions expand and
bugs resolved, OPL1000 also provides firmware patch of M3 and M0. Therefore, the development of user APP
is completed based on the foundation of ROM code and firmware patch. Their relationship can be
demonstrated with Figure 1.
The M0 Patch is sent out via Opulinks in the format of binary files. M3 Patch is provided in the format for
lib documents, as the user APP and SDK source code from Opulinks are used as Keil C project for coding,
therefore, the generated M3 bin document include M3 Firmware Patch, SDK and user APP application
procedure. Ultimately, M0 Patch Bin documents and M3 Bin documents are combined and then downloaded to
external Flash, and after OPL1000 is powered up, M3/M0 Bin documents in the Flash is loaded into RAM to
execute. The overall process can be shown with Figure 2.
Figure 2: Compiling of User APP & Patch, Loading Process (without OTA Function)