The Starterware initialisation function already reads back the flag for CLK_M_OSC, so that should fit. Multiplexing is not necessary for DMTimer 2 and 3, so I don't know what to set/check here.
What is TRM? On Sun, Nov 3, 2013 at 4:02 PM, Mark Lazarewicz <lazar...@yahoo.com> wrote: > Did you Read the TRM and manually check the relavent register values > including any mux register values > > > > On Sunday, November 3, 2013 5:46 AM, Satz Klauer <satzkla...@googlemail.com> > wrote: > > 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 beagleboard+unsubscr...@googlegroups.com. > > For more options, visit https://groups.google.com/groups/opt_out. > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/eU77g-KJWdc/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
