diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc214x/lpc214x_timerisr.c')
| -rw-r--r-- | nuttx/arch/arm/src/lpc214x/lpc214x_timerisr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nuttx/arch/arm/src/lpc214x/lpc214x_timerisr.c b/nuttx/arch/arm/src/lpc214x/lpc214x_timerisr.c index 3ed87a2bc..4a7bbb6c4 100644 --- a/nuttx/arch/arm/src/lpc214x/lpc214x_timerisr.c +++ b/nuttx/arch/arm/src/lpc214x/lpc214x_timerisr.c @@ -54,7 +54,12 @@ * Definitions ****************************************************************************/ -#define PCLKFREQ (LPC214X_FOSC/4) /* PCLK must be FOSC/4 */ +/* The timers count at the rate of PCLK which is determined by PLL_M and + * and APBDIV: + */ + +#define LPC214X_CCLKFREQ (LPC214X_FOSC*LPC214X_PLL_M) +#define LPC214X_PCLKFREQ (LPC214X_CCLKFREQ/LPC214X_APBDIV) #define tmr_getreg8(o) getreg8(LPC214X_TMR0_BASE+(o)) #define tmr_getreg16(o) getreg16(LPC214X_TMR0_BASE+(o)) |