Partitioned hvac controller

A computer-implemented method executed by at least one processor within an HVAC field device, the method comprising:

• providing, in a first partition of a non-volatile memory unit, a first set of computer-executable instructions configured to execute an operating system on the HVAC field device;
• providing, in a second partition of the non-volatile memory unit, a second set of computer-executable instructions configured to execute an application module configured to control operation of an HVAC functional device communicatively coupled to the HVAC field device;
• executing the first set of computer-executable instructions in a first memory region of a volatile memory unit;
• executing the second set of computer-executable instructions in a second memory region of the volatile memory unit, wherein the second set of computer-executable instructions is prevented from accessing the first memory region of the volatile memory unit;
• and
• operating the HVAC functional device based at least in part on the execution of the second set of computer-executable instructions.

Non-transitory computer storage media storing instructions that when executed by a system including at least one processor, cause the at least one processor to perform operations comprising:

• providing, in a first partition of a non-volatile memory unit, a first set of computer-executable instructions configured to execute an operating system on an HVAC field device;
• providing, in a second partition of the non-volatile memory unit, a second set of computer-executable instructions configured to execute an application module configured to control operation of an HVAC functional device communicatively coupled to the HVAC field device;
• executing the first set of computer-executable instructions in a first memory region of a volatile memory unit;
• executing the second set of computer-executable instructions in a second memory region of the volatile memory unit, wherein the second set of computer-executable instructions is prevented from accessing the first memory region of the volatile memory unit;
• and
• operating the HVAC functional device based at least in part on the execution of the second set of computer-executable instructions.

An HVAC field device comprising:

• a housing;
• an HVAC functional device;
• a non-volatile memory unit comprising:
• a first set of computer-executable instructions in a first memory partition configured to execute an operating system;
• and
• a second set of computer-executable instructions in a second memory partition configured to execute an application module, wherein the application module is configured to control operation of the HVAC functional device ;
• a volatile memory unit;
• and
• at least one processor configured to:
• execute the operating system in a first memory region of the volatile memory unit and execute the application module in a second memory region of the volatile memory unit, wherein the application module is prevented from accessing the first memory region of the volatile memory unit.