METHOD FOR PROCESSING DATA OF A CONTROL UNIT IN A DATA COMMUNICATION DEVICE

• US 20130042079A1
• Filed: 08/09/2012
• Published: 02/14/2013
• Est. Priority Date: 08/09/2011
• Status: Active Grant

• Current Assignee: Dspace GmbH
• Original Assignee: Dspace GmbH
• Inventors: Kellers, Bastian, Hofmann, Daniel, Hufnagel, Thorsten, Dressler, Marc
• Granted Patent: US 9,047,409 B2
• Time in Patent Office: Days
• US Class Current: 711/147
• CPC Class Codes: G06F 11/0709 in a distributed system consisting of a plurality of standalone computer nodes, e.g. clusters, client-server systems
• CPC Class Codes: G06F 11/0739 in a data processing system embedded in automotive or aircraft systems
• CPC Class Codes: G06F 11/0793 Remedial or corrective actions recovery from an exception in an instruction pipeline G06F9/3861; by retry G06F11/1402; for recovering from a failure of a protocol instance or entity H04L69/40
• CPC Class Codes: G06F 11/3656 using a specific debug interface

Abstract

A method for processing data of a control unit in a data communication device, which has a first memory area and a second memory area, and is connected to the control unit through an interface. Data from the control unit is transmitted to the data communication device through the interface. A value is stored identically in the first memory area and in the second memory area. The data communication device tests whether a first trigger is present, and if present, storage in the first memory area is discontinued, or the trigger class of the first trigger is tested and storage in the first memory area is discontinued only in the presence of a predefined trigger class. Subsequently, values of the data are read out from the first memory area, whereby values arriving chronologically after the first trigger are stored in the second memory area by the data communication device.

Claims

1. A method for processing data of a control unit in a data communication device, the data communication device comprising a first memory area and a second memory area and is connectable to the control unit through an interface, the method comprising:

transmitting data from the control unit to the data communication device through the interface, each data item of the data has an address and a value;

identically storing a value in the first memory area and in the second memory area; and

testing, via the data communication device, whether a first trigger is present, if the first trigger is present;

storage in the first memory area is discontinued, or the trigger class of the first trigger is tested and storage in the first memory area is discontinued in the presence of a predefined trigger class,

values of the data stored in the first memory area are read out from the first memory area; and

additional values arriving chronologically after the first trigger are stored in the second memory area by the data communication device.

2. The method according to claim 1, wherein each value is stored identically in the first memory area and in the second memory area until the first trigger is present.

3. The method according to claim 1, wherein the data communication device tests whether a second trigger is present, and if the second trigger is present storage in the second memory area is discontinued, and values of the data are read out from the second memory area.

4. The method according to claim 3, wherein the data communication device has a first data acquisition unit and a second data acquisition unit, and if the first trigger is present, the first data acquisition unit reads the values out of the first memory area, and if the second trigger is present, the second data acquisition unit reads the values out of the second memory area.

5. The method according to claim 3, wherein the first trigger has a first priority and the second trigger has a second priority, and wherein, if the second priority is higher than the first priority, the readout of the values of the first memory area is discontinued and the readout of the values of the second memory area is started.

6. The method according to claim 5, wherein the readout of the values of the first memory area is resumed after the readout of the values of the second memory area.

7. The method according to claim 1, wherein addresses of the first memory area and/or of the second memory area are associated with the first trigger, and wherein, in the presence of a second trigger, addresses of the first memory area and/or of the second memory area are associated with the second trigger.

8. The method according to claim 7, wherein the data communication device is connectable to a data processing device, wherein data are transmitted to the data processing device via the data communication device, and wherein values that are read out from the first memory area or from the second memory area whose addresses are associated with the first trigger and the first trigger having a lower priority than the second trigger of a still unfinished readout process are not transmitted to the data processing device until the values whose addresses are associated with the second trigger have been transmitted to the data processing device.

9. The method according to claim 1, wherein the data communication device has a first buffer memory that is associated with the first memory area, and wherein, during the discontinuation of storage in the first memory area, values of the data arriving chronologically after the first trigger are buffered in the first buffer memory and the buffered values of the data are stored in the first memory area after the readout from the first memory area.

10. The method according to claim 9, wherein a first buffer memory is associated with the first memory area and a second buffer memory is associated with the second memory area, and wherein the first buffer memory and the second buffer memory are each implemented as a separate memory or as a part of a memory with multiple outputs.

11. The method according to claim 9, wherein a common third buffer memory is arranged upstream of the first buffer memory and the second buffer memory.

12. The method according to claim 1, wherein a value in the first memory area obtains a first memory address, wherein a value in the second memory area obtains a second memory address, and wherein the address of the second memory area is obtained for a value in that a predefined address value is added to the first memory address.

13. The method according to claim 1, wherein the first trigger is associated with precisely the first memory area if it is present in the data communication device, wherein the second trigger is associated with precisely the second memory area if it is present in the data communication device, wherein, when the first trigger is present, the values are only read out from the first memory area, and wherein, when the second trigger is present, the values are only read out from the second memory area.

14. The method according to claim 13, wherein an association of the first trigger with the first memory area is rescinded after the readout of the values from the first memory area.

15. The method according to claim 1, wherein the control unit is an electronic control unit.