US 12,761,904 B2 · Method and system for FOTA update for higher performance MCU with external flash

Abstract

Systems and methods for updating firmware may include using wait states to reduce or eliminate polling by an executing firmware component. An example includes dedicated firmware update hardware logic components, including a firmware update processing unit that executes firmware update code. The firmware update code may be paused between request of a hardware event and completion of a hardware event and under control of one or more of the hardware logic components. Once a hardware event has been completed, a hardware logic component may determine completion and, in response, restart execution of the firmware update code.

Claims20

Dependent claims

A method comprising:

updating firmware by:
using a first processing unit, initiating a first data write operation to a memory via a memory controller, wherein the first data write operation is configured to write a portion of a first version of the firmware to a first bank of the memory;
determining a duration of a timer between the initiating of the first data write operation and polling to determine a status of the first data write operation;
during the duration of the timer, accessing a second version of the firmware from a second bank of the memory;
after expiration of the timer, using the first processing unit, polling the memory for completion of the first data write operation;
and
subsequent to the polling, determining whether a response to the polling indicates completion of the first data write operation.

4 more elements

A circuit device comprising:

a first processing resource coupled to an interconnect;
firmware update hardware coupled to the interconnect;
a memory;
and
a memory controller coupled to the firmware update hardware, the interconnect, and the memory, the memory controller being configured to read from and write to the memory;
wherein the firmware update hardware includes a second processing resource configured to access computer-readable code, which when executed by the second processing resource, causes the second processing resource to update firmware stored on the memory, including:
requesting access to a bus, wherein the bus is shared with the first processing resource and is coupled to the memory controller;
entering a wait state, under control of the firmware update hardware, during a time in which the firmware update hardware operates to receive access to the bus;
and
exiting the wait state, under control of the firmware update hardware, upon access to the bus being received.

7 more elements

Dependencies are inferred from the claim text.

Method and system for FOTA update for higher performance MCU with external flash

Life of this patent

Method and system for FOTA update for higher performance MCU with external flash

Life of this patent

Abstract

Claims20