Hi, I'm trying to set up a fast timer interrupt using CLK_M_OSC as clock source for DMTimer2. For initialising this I'm calling DMTimer2ModuleClkConfig() from Starterware code which itself seems to select CLK_M_OSC as source for the timer clock using following code:
/* Select the clock source for the Timer2 instance. */ HWREG(SOC_CM_DPLL_REGS + CM_DPLL_CLKSEL_TIMER2_CLK) &= ~(CM_DPLL_CLKSEL_TIMER2_CLK_CLKSEL); HWREG(SOC_CM_DPLL_REGS + CM_DPLL_CLKSEL_TIMER2_CLK) |= CM_DPLL_CLKSEL_TIMER2_CLK_CLKSEL_CLK_M_OSC; while((HWREG(SOC_CM_DPLL_REGS + CM_DPLL_CLKSEL_TIMER2_CLK) & CM_DPLL_CLKSEL_TIMER2_CLK_CLKSEL) != CM_DPLL_CLKSEL_TIMER2_CLK_CLKSEL_CLK_M_OSC); As fas as I understand there CLK_M_OSC is choosen. Nevertheless the frequency/calling speed of my ISR tells me I'm still at 32 kHz clock, so CLK_M_OSC does not seem to be used. My whole initialisation code looks like this (and mainly comes from the Starterware examples): DMTimerModeConfigure(SOC_DMTIMER_2_REGS, DMTIMER_AUTORLD_NOCMP_ENABLE); DMTimerCounterSet(SOC_DMTIMER_2_REGS, 0xFFFFFFF9u); DMTimerReloadSet(SOC_DMTIMER_2_REGS, 0xFFFFFFF9u); DMTimer2ModuleClkConfig(); --> here CLK_M_OSC should be chosen... IntAINTCInit(); IntRegister(SYS_INT_TINT2, isr_xy2_100); IntPrioritySet(SYS_INT_TINT2, 0, AINTC_HOSTINT_ROUTE_IRQ); IntSystemEnable(SYS_INT_TINT2); IntMasterIRQEnable(); So...what could be wrong? Why isn't the fast clock source used? Thanks! -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
