diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c b/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c index 85acdd3ea6..b4373d48b7 100644 --- a/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c +++ b/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c @@ -77,12 +77,10 @@ Clock_isr (rtems_vector_number vector) void Clock_exit (void) { - if (BSP_Configuration.ticks_per_timeslice ) { - /* - * Turn off periodic interval timer - */ - SIMPITR = 0; - } + /* + * Turn off periodic interval timer + */ + SIMPITR = 0; } /****************************************************** @@ -96,34 +94,33 @@ static void Install_clock (rtems_isr_entry clock_isr) { unsigned32 pitr_tmp; + unsigned32 usecs_per_tick; Clock_driver_ticks = 0; - if ( BSP_Configuration.ticks_per_timeslice ) { - set_vector (clock_isr, CLOCK_VECTOR, 1); + set_vector (clock_isr, CLOCK_VECTOR, 1); - /* sets the Periodic Interrupt Control Register PICR */ - /* voir a quoi correspond exactement le Clock Vector */ + /* sets the Periodic Interrupt Control Register PICR */ + /* voir a quoi correspond exactement le Clock Vector */ - SIMPICR = ( CLOCK_IRQ_LEVEL << 8 ) | ( CLOCK_VECTOR ); - - /* sets the PITR count value */ - /* this assumes a 32.765 kHz crystal */ + SIMPICR = ( CLOCK_IRQ_LEVEL << 8 ) | ( CLOCK_VECTOR ); + + /* sets the PITR count value */ + /* this assumes a 32.765 kHz crystal */ - /* find out whether prescaler should be enabled or not */ - if ( BSP_Configuration.microseconds_per_tick <= 31128 ) { - pitr_tmp = ( BSP_Configuration.microseconds_per_tick * 8192 ) / 1000000 ; - } - else { - pitr_tmp = ( BSP_Configuration.microseconds_per_tick / 1000000 ) * 16; - /* enable it */ - pitr_tmp |= 0x100; - } + usecs_per_tick = BSP_Configuration.microseconds_per_tick; + /* find out whether prescaler should be enabled or not */ + if ( usecs_per_tick <= 31128 ) { + pitr_tmp = ( usecs_per_tick * 8192 ) / 1000000 ; + } else { + pitr_tmp = ( usecs_per_tick / 1000000 ) * 16; + /* enable it */ + pitr_tmp |= 0x100; + } - SIMPITR = (unsigned char) pitr_tmp; + SIMPITR = (unsigned char) pitr_tmp; - atexit (Clock_exit); - } + atexit (Clock_exit); } /****************************************************** |