diff options
Diffstat (limited to 'doc/README.LED')
| -rw-r--r-- | doc/README.LED | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/doc/README.LED b/doc/README.LED index 12211774e..94e552aa0 100644 --- a/doc/README.LED +++ b/doc/README.LED @@ -10,7 +10,7 @@ The first step is to define CONFIG_STATUS_LED in the board config file. If the LED support is only for a single board, define CONFIG_BOARD_SPECIFIC_LED in the board config file. -At a minimum, these macros must be defined at +At a minimum, these macros must be defined at STATUS_LED_BIT STATUS_LED_STATE STATUS_LED_PERIOD @@ -20,7 +20,7 @@ STATUS_LED_BIT<n> STATUS_LED_STATE<n> STATUS_LED_PERIOD<n> -Where <n> can a integer 1 through 3. +Where <n> can a integer 1 through 3. STATUS_LED_BIT is passed into the __led_* functions to identify which LED is being acted on. As such, the value choose must be unique with with respect to @@ -37,25 +37,25 @@ range from 2 to 10. Some other LED macros STATUS_LED_BOOT is the LED to light when the board is booting. This must be a -valid STATUS_LED_BIT value. +valid STATUS_LED_BIT value. STATUS_LED_RED is the red LED. It is used signal errors. This must be a valid STATUS_LED_BIT value. Other similar color LED's are STATUS_LED_YELLOW and -STATUS_LED_BLUE. +STATUS_LED_BLUE. These board must define these functions __led_init is called once to initialize the LED to STATUS_LED_STATE. One time start up code should be placed here. -__led_set is called to change the state of the LED. +__led_set is called to change the state of the LED. __led_toggle is called to toggle the current state of the LED. Colour LED ======================================== -Colour LED's are at present only used by ARM. +Colour LED's are at present only used by ARM. The functions names explain their purpose. |