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Tidy up the comments and use of static function prototypes in the SAM4L_low_power_tick_management.c implementation.

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This commit is contained in:
Richard Barry 2013-06-06 11:19:32 +00:00
parent 3fbee4f0a8
commit 2e5d812022
1 changed files with 14 additions and 7 deletions
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21
FreeRTOS/Demo/CORTEX_M4_ATSAM4L_Atmel_Studio/src/SAM4L_low_power_tick_management.c
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@ -116,6 +116,13 @@ within the Cortex-M core itself. */
*/ */
void AST_ALARM_Handler(void); void AST_ALARM_Handler(void);
/*
* Functions that disable and enable the AST respectively, not returning until
* the operation is known to have taken effect.
*/
static void prvDisableAST( void );
static void prvEnableAST( void );
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Calculate how many clock increments make up a single tick period. */ /* Calculate how many clock increments make up a single tick period. */
@ -175,8 +182,8 @@ void AST_ALARM_Handler(void)
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Override the default definition of vPortSetupTimerInterrupt() that is weakly /* Override the default definition of vPortSetupTimerInterrupt() that is weakly
defined in the FreeRTOS Cortex-M3 port layer layer with a version that defined in the FreeRTOS Cortex-M3 port layer with a version that configures the
configures the asynchronous timer (AST) to generate the tick interrupt. */ asynchronous timer (AST) to generate the tick interrupt. */
void vPortSetupTimerInterrupt( void ) void vPortSetupTimerInterrupt( void )
{ {
struct ast_config ast_conf; struct ast_config ast_conf;
@ -226,7 +233,7 @@ struct ast_config ast_conf;
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
void prvDisableAST( void ) static void prvDisableAST( void )
{ {
while( ast_is_busy( AST ) ) while( ast_is_busy( AST ) )
{ {
@ -240,7 +247,7 @@ void prvDisableAST( void )
} }
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
void prvEnableAST( void ) static void prvEnableAST( void )
{ {
while( ast_is_busy( AST ) ) while( ast_is_busy( AST ) )
{ {
@ -255,9 +262,9 @@ void prvEnableAST( void )
/*-----------------------------------------------------------*/ /*-----------------------------------------------------------*/
/* Override the default definition of vPortSuppressTicksAndSleep() that is weakly /* Override the default definition of vPortSuppressTicksAndSleep() that is weakly
defined in the FreeRTOS Cortex-M3 port layer layer with a version that manages defined in the FreeRTOS Cortex-M3 port layet with a version that manages the
the asynchronous timer (AST), as the tick is generated from the low power AST asynchronous timer (AST), as the tick is generated from the low power AST and
and not the SysTick as would normally be the case on a Cortex-M. */ not the SysTick as would normally be the case on a Cortex-M. */
void vPortSuppressTicksAndSleep( portTickType xExpectedIdleTime ) void vPortSuppressTicksAndSleep( portTickType xExpectedIdleTime )
{ {
uint32_t ulAlarmValue, ulCompleteTickPeriods; uint32_t ulAlarmValue, ulCompleteTickPeriods;