Design Cases

Develop a Target That Creates PIL and External Mode Features from Scratch

This example shows how to develop targets for two fictitious hardware boards, ABC Ventures Cortex-M3 board and ABC Ventures Cortex-M1 board. You create the target using the ARM® Cortex®-M target as a reference.

The target will support the ABC CORTEX-M3 and ABC CORTEX-M1 hardware board. For both hardware boards, the deployer and appropriate baremetal schedulers will be taken from the reference target. The external mode and profiler features will be defined by the target and applied to both boards.

The hardware to feature mapping of the new target is shown in the following table.

NameHardware

ABC Ventures Cortex-M3 Board

New

ABC Ventures Cortex-M1 Board

New

My Serial External Mode

New

New

My Serial PIL

New

New

GNU Tools for ARM Embedded Processors

From reference

From reference

SysTick Scheduler

From reference

N/A

m0m1m0plus SysTick Scheduler

N/A

From reference

Identify reference target, name the new target, and create the framework in the specified root folder.

referenceTargetName = 'ARM Cortex-M';
myNewTargetName = 'Target for ABC Ventures Cortex-M Boards';
myNewTargetRootFolder = 'c:/abcventures';
myNewTarget = createTarget(myNewTargetName,referenceTargetName,myNewTargetRootFolder);

Define the hardware that you want to support.

myNewHardwareName1 = 'ABC-CORTEX-M3';
myNewHardware1 = createHardware(myNewHardwareName1);
myNewHardware1.DeviceID = 'ARM Cortex-M3';
ioInterfaceName = 'My Serial Connection 1';
serialInterface1 = addNewSerialInterface(myNewHardware1,ioInterfaceName);
serialInterface1.AvailablePorts = {'COM1','COM2'};
serialInterface1.DefaultPort = 'COM1';
map(myNewTarget,myNewHardware1, 'ABC Ventures Cortex-M3 Board');
myNewHardwareName2 = 'ABC-CORTEX-M1';
myNewHardware2 = createHardware(myNewHardwareName2);
myNewHardware2.DeviceID = 'ARM Cortex-M1';
ioInterfaceName = 'My Serial Connection 2';
serialInterface2 = addNewSerialInterface(myNewHardware2,ioInterfaceName);
serialInterface2.AvailablePorts = {'COM1','COM2'};
serialInterface2.DefaultPort = 'COM2';
map(myNewTarget,myNewHardware2, 'ABC Ventures Cortex-M1 Board');

Define the new feature configuration.

myRefSchedulers = getBaremetalScheduler(myNewTarget,'reference');
myNewExtMode = addNewExternalMode(myNewTarget,'My Serial External Mode');
myNewExtMode.SourceFiles = {'$(TARGET_ROOT)/src/abc_rtiostream_serial.c'};
myNewExtMode.PreConnectFcn = 'pause(2)';
myNewPIL = addNewPIL(myNewTarget,'My Serial PIL');
refDeployer = getDeployer(myNewTarget,'name','GNU Tools for ARM Embedded Processors');

Use the new feature configuration for the supported hardware.

map(myNewTarget,myNewHardware1,{refDeployer,myRefSchedulers{1}});
map(myNewTarget,myNewHardware1,myNewPIL,'My Serial Connection 1');
map(myNewTarget,myNewHardware1,myNewExtMode,'My Serial Connection 1');
map(myNewTarget,myNewHardware2,{refDeployer,myRefSchedulers{2}});
map(myNewTarget,myNewHardware2,myNewPIL,'My Serial Connection 2');
map(myNewTarget,myNewHardware2,myNewExtMode,'My Serial Connection 2');

Save the new target.

saveTarget(myNewTarget);