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AVR port: instructions for using PART= to change the CPU target during make.

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Also add TESTS_LOG_STACK parameter so that stack-usage logging can be enabled without editing Makefile.
This commit is contained in:
Kelvin Lawson
2012-06-21 21:29:18 +01:00
parent 22a5af0eae
commit 97a15799b4
2 changed files with 21 additions and 10 deletions
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8
ports/avr/Makefile
View File

@@ -28,6 +28,9 @@ PART=atmega16
# must disable stack-checking to run all of the automated tests.
#STACK_CHECK=true
# Test programs: Log stack usage to UART (if STACK_CHECK is enabled)
#TESTS_LOG_STACK=true
# Directory for built objects
BUILD_DIR=build
@@ -57,10 +60,13 @@ vpath %.hex ./$(BUILD_DIR)
# GCC flags
CFLAGS=-g -mmcu=$(PART) -Wall -Werror
# Enable stack-checking (disable if not required)
# Enable stack-checking options (disable if not required)
ifeq ($(STACK_CHECK),true)
CFLAGS += -DATOM_STACK_CHECKING
endif
ifeq ($(TESTS_LOG_STACK),true)
CFLAGS += -DTESTS_LOG_STACK_USAGE
endif
#################

23
ports/avr/README
View File

@@ -66,9 +66,10 @@ can easily replace UISP by your own favourite programmer if required.
BUILDING THE SOURCE
A Makefile is provided for building the kernel, port and automated tests.
The full build is carried out using simply:
The full build is carried out using the following (replacing PART by the
ATmega device you are using):
* make
* make PART=atmega128
All objects are built into the 'build' folder under ports/avr. The build
process builds separate target applications for each automated test, and
@@ -96,11 +97,12 @@ PROGRAMMING TO THE TARGET DEVICE
Application HEX files which are built into the build folder can be
downloaded to the target using:
* make program app=<appname>
* make PART=<cpu> program app=<appname>
For example to download the 'sem1.hex' test application to the target use:
For example to download the 'sem1.hex' test application to an ATmega128
target use:
* make program app=sem1
* make PART=atmega128 program app=sem1
This uses UISP which will write the application into flash and reset the
CPU to start running the program automatically.
@@ -143,11 +145,11 @@ The full set of tests can be found in the top-level 'tests' folder. Each of
these tests is built as an independent application in the 'build' folder.
Run them individually using:
* make program app=testname
* make PART=<cpu> program app=<testname>
For example to run the 'kern1.c' test use:
For example to run the 'kern1.c' test on an ATmega128 device use:
* make program app=kern1
* make PART=atmega128 program app=kern1
Before running the program and data size for the application is printed
out on the terminal. You can use this to verify that your platform has
@@ -204,7 +206,10 @@ a call to your own application startup code.
PORTING TO OTHER HARDWARE PLATFORMS
If you are using a CPU other than the ATmega16, change the PART definition
in the Makefile to your own CPU.
in the Makefile to your own CPU, or specify the PART on the make command
line using:
* make PART=atmega128
On CPUs with multiple UARTs, the port uses UART0 to output debug
information. If you wish to use an alternative UART you may change the