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Fix LED control logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2773 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2010-07-04 16:22:00 +00:00
parent 0de5b52564
commit d0bf8e8fb3
4 changed files with 171 additions and 226 deletions
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configs/nucleus2g/README.txt
+52 -1
View File
@@ -13,7 +13,7 @@ Contents
IDEs
NuttX buildroot Toolchain
USB Device Controller Functions
OLED
LEDs
Nucleus 2G Configuration Options
Configurations
@@ -208,6 +208,57 @@ NuttX buildroot Toolchain
NOTE: This is an OABI toolchain.
LEDs
^^^^
If CONFIG_ARCH_LEDS is defined, then support for the Nucleus-2G LEDs will be
included in the build. See:
- configs/nucleus2g/include/board.h - Defines LED constants, types and
prototypes the LED interface functions.
- configs/nucleus2g/src/nucleus2g_internal.h - GPIO settings for the LEDs.
- configs/nucleus2g/src/up_leds.c - LED control logic.
The Nucleus2G has 3 LEDs... two on the Babel CAN board and a "heartbeat" LED."
The LEDs on the Babel CAN board are capabl of OFF/GREEN/RED/AMBER status.
In normal usage, the two LEDs on the Babel CAN board would show CAN status, but if
CONFIG_ARCH_LEDS is defined, these LEDs will be controlled as follows for NuttX
debug functionality (where NC means "No Change").
During the boot phases. LED1 and LED2 will show boot status.
/* LED1 LED2 HEARTBEAT */
#define LED_STARTED 0 /* OFF OFF OFF */
#define LED_HEAPALLOCATE 1 /* GREEN OFF OFF */
#define LED_IRQSENABLED 2 /* OFF GREEN OFF */
#define LED_STACKCREATED 3 /* OFF OFF OFF */
#define LED_INIRQ 4 /* NC NC ON (momentary) */
#define LED_SIGNAL 5 /* NC NC ON (momentary) */
#define LED_ASSERTION 6 /* NC NC ON (momentary) */
#define LED_PANIC 7 /* NC NC ON (1Hz flashing) */
After the system is booted, this logic will no longer use LEDs 1 and 2. They
are then available for use the application software using lpc17_led1() and
lpc17_led2():
enum lpc17_ledstate_e
{
LPC17_LEDSTATE_OFF = 0,
LPC17_LEDSTATE_GREEN = 1,
LPC17_LEDSTATE_RED = 2,
LPC17_LEDSTATE_AMBER = (LPC17_LEDSTATE_GREEN|LPC17_LEDSTATE_RED),
};
EXTERN void lpc17_led1(enum lpc17_ledstate_e state);
EXTERN void lpc17_led2(enum lpc17_ledstate_e state);
The heartbeat LED is illuminated during all interrupt and signal procressing.
Normally, it will glow dimly to inicate that the LPC17xx is taking interrupts.
On an assertion PANIC, it will flash at 1Hz.
Nucleus 2G Configuration Options
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^