altos/lpc: Add fast timer

[fw/altos] / src / lpc / ao_timer_lpc.c

diff --git a/src/lpc/ao_timer_lpc.c b/src/lpc/ao_timer_lpc.c
index 44fb410e7f522b642d1a68f965f46681690a3d74..623559ebe14c4c69127a62c381d8a1161085a945 100644 (file)
--- a/src/lpc/ao_timer_lpc.c
+++ b/src/lpc/ao_timer_lpc.c
@@ -99,7 +99,7 @@ ao_clock_init(void)
                                 (1 << LPC_SCB_SYSAHBCLKCTRL_FLASHARRAY) |
                                 (1 << LPC_SCB_SYSAHBCLKCTRL_GPIO) |
                                 (1 << LPC_SCB_SYSAHBCLKCTRL_IOCON));
-                                
+
        /* Enable the brown-out detection at the highest voltage to
         * make sure the flash part remains happy
         */
@@ -112,21 +112,21 @@ ao_clock_init(void)
        /* Turn the IRC clock back on */
        lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_IRC_PD);
        ao_clock_delay();
-       
+
        /* Switch to the IRC clock */
        lpc_scb.mainclksel = LPC_SCB_MAINCLKSEL_SEL_IRC << LPC_SCB_MAINCLKSEL_SEL;
        lpc_scb.mainclkuen = (0 << LPC_SCB_MAINCLKUEN_ENA);
        lpc_scb.mainclkuen = (1 << LPC_SCB_MAINCLKUEN_ENA);
        while (!(lpc_scb.mainclkuen & (1 << LPC_SCB_MAINCLKUEN_ENA)))
                ;
-       
+
        /* Switch USB to the main clock */
        lpc_scb.usbclksel = (LPC_SCB_USBCLKSEL_SEL_MAIN_CLOCK << LPC_SCB_USBCLKSEL_SEL);
        lpc_scb.usbclkuen = (0 << LPC_SCB_USBCLKUEN_ENA);
        lpc_scb.usbclkuen = (1 << LPC_SCB_USBCLKUEN_ENA);
        while (!(lpc_scb.usbclkuen & (1 << LPC_SCB_USBCLKUEN_ENA)))
                ;
-       
+
        /* Find a PLL post divider ratio that gets the FCCO in range */
        for (p = 0; p < 4; p++)
                if (AO_LPC_CLKOUT << (1 + p) >= AO_LPC_FCCO_MIN)
@@ -163,12 +163,12 @@ ao_clock_init(void)
        lpc_scb.syspllclkuen = (1 << LPC_SCB_SYSPLLCLKUEN_ENA);
        while (!(lpc_scb.syspllclkuen & (1 << LPC_SCB_SYSPLLCLKUEN_ENA)))
                ;
-       
+
        /* Turn on the PLL */
        lpc_scb.pdruncfg &= ~(1 << LPC_SCB_PDRUNCFG_SYSPLL_PD);
 
        /* Wait for it to lock */
-       
+
        for (i = 0; i < 20000; i++)
                if (lpc_scb.syspllstat & (1 << LPC_SCB_SYSPLLSTAT_LOCK))
                        break;
@@ -199,7 +199,7 @@ ao_clock_init(void)
        lpc_scb.usbpllclkuen = (1 << LPC_SCB_USBPLLCLKUEN_ENA);
        while (!(lpc_scb.usbpllclkuen & (1 << LPC_SCB_USBPLLCLKUEN_ENA)))
                ;
-       
+
        /* Power down everything we don't need */
        lpc_scb.pdruncfg = ((1 << LPC_SCB_PDRUNCFG_IRCOUT_PD) |
                            (1 << LPC_SCB_PDRUNCFG_IRC_PD) |