#include "ao.h"
-#define _cat(a,b) a##b
-#define cat(a,b) _cat(a,b)
+#define _cat2(a,b) a##b
+#define cat2(a,b) _cat2(a,b)
#define _cat4(a,b,c,d) a##b##c##d
#define cat4(a,b,c,d) _cat4(a,b,c,d)
#define _cat8(a,b,c,d,e,f,g,h) a##b##c##d##e##f##g##h
#define cat8(a,b,c,d,e,f,g,h) _cat8(a,b,c,d,e,f,g,h)
-#define AO_TIMER_CLKCTRL cat(LPC_SCB_SYSAHBCLKCTRL_CT32B, BEEPER_TIMER)
-#define AO_TIMER cat(lpc_ct32b, BEEPER_TIMER)
-#define AO_TIMER_EMC cat(LPC_CT32B_EMR_EMC, BEEPER_OUTPUT)
-#define AO_TIMER_PIO cat4(pio, BEEPER_PORT, _, BEEPER_PIN)
-/* LPC_IOCONF_FUNC_PIO0_14_CT32B1_MAT1 */
-#define AO_TIMER_FUNC cat8(LPC_IOCONF_FUNC_PIO, BEEPER_PORT, _, BEEPER_PIN, _CT32B, BEEPER_TIMER, _MAT, BEEPER_OUTPUT)
+#ifndef AO_LPC_BEEP_TIMER
+#define AO_LPC_BEEP_TIMER 1
+#define AO_LPC_BEEP_CHANNEL 1
+#define AO_LPC_BEEP_PORT 0
+#define AO_LPC_BEEP_PIN 14
+#endif
+
+#define AO_LPC_CT_BEEP cat2(lpc_ct32b, AO_LPC_BEEP_TIMER)
+#define AO_LPC_CT_BEEP_CLKCTRL cat2(LPC_SCB_SYSAHBCLKCTRL_CT32B, AO_LPC_BEEP_TIMER)
+#define AO_LPC_CT_BEEP_EMR cat2(LPC_CT32B_EMR_EMC, AO_LPC_BEEP_CHANNEL)
+#define AO_LPC_CT_BEEP_MR AO_LPC_BEEP_CHANNEL
+#define AO_LPC_CT_BEEP_PWMC cat2(LPC_CT32B_PWMC_PWMEN, AO_LPC_BEEP_CHANNEL)
+#define AO_LPC_CT_BEEP_IOCONF cat4(pio,AO_LPC_BEEP_PORT,_,AO_LPC_BEEP_PIN)
+#define AO_LPC_CT_BEEP_FUNC cat8(LPC_IOCONF_FUNC_PIO,AO_LPC_BEEP_PORT,_,AO_LPC_BEEP_PIN,_CT32B,AO_LPC_BEEP_TIMER,_MAT,AO_LPC_BEEP_CHANNEL)
void
ao_beep(uint8_t beep)
{
if (beep == 0) {
- AO_TIMER.tcr = ((0 << LPC_CT32B_TCR_CEN) |
+ AO_LPC_CT_BEEP.tcr = ((0 << LPC_CT32B_TCR_CEN) |
(1 << LPC_CT32B_TCR_CRST));
- lpc_scb.sysahbclkctrl &= ~(1UL << AO_TIMER_CLKCTRL);
+ lpc_scb.sysahbclkctrl &= ~(1UL << AO_LPC_CT_BEEP_CLKCTRL);
} else {
- lpc_scb.sysahbclkctrl |= (1 << AO_TIMER_CLKCTRL);
+ lpc_scb.sysahbclkctrl |= (1UL << AO_LPC_CT_BEEP_CLKCTRL);
/* Set prescaler to match cc1111 clocks
*/
- AO_TIMER.pr = AO_LPC_SYSCLK / 750000 - 1;
+ AO_LPC_CT_BEEP.pr = AO_LPC_SYSCLK / 750000 - 1;
/* Write the desired data in the match registers */
/* Reset after two time units */
- AO_TIMER.mr[0] = beep << 1;
+ AO_LPC_CT_BEEP.mr[0] = beep << 1;
/* PWM width is half of that */
- AO_TIMER.mr[1] = beep;
+ AO_LPC_CT_BEEP.mr[AO_LPC_CT_BEEP_MR] = beep;
- /* Flip output 1 on PWM match */
- AO_TIMER.emr = (LPC_CT32B_EMR_EMC_TOGGLE << LPC_CT32B_EMR_EMC1);
+ /* Flip output on PWM match */
+ AO_LPC_CT_BEEP.emr = (LPC_CT32B_EMR_EMC_TOGGLE << AO_LPC_CT_BEEP_EMR);
/* Reset on match 0 */
- AO_TIMER.mcr = (1 << LPC_CT32B_MCR_MR0R);
+ AO_LPC_CT_BEEP.mcr = (1 << LPC_CT32B_MCR_MR0R);
- /* PWM on match 1 */
- AO_TIMER.pwmc = (1 << LPC_CT32B_PWMC_PWMEN1);
+ /* PWM on match */
+ AO_LPC_CT_BEEP.pwmc = (1 << AO_LPC_CT_BEEP_PWMC);
/* timer mode */
- AO_TIMER.ctcr = 0;
+ AO_LPC_CT_BEEP.ctcr = 0;
/* And turn the timer on */
- AO_TIMER.tcr = ((1 << LPC_CT32B_TCR_CEN) |
+ AO_LPC_CT_BEEP.tcr = ((1 << LPC_CT32B_TCR_CEN) |
(0 << LPC_CT32B_TCR_CRST));
}
}
void
ao_beep_init(void)
{
- lpc_ioconf.AO_TIMER_PIO = ((AO_TIMER_FUNC << LPC_IOCONF_FUNC) |
+ /* Our beeper is on c32b1_mat1
+ * which is on pin pio0_14
+ */
+
+ lpc_ioconf.AO_LPC_CT_BEEP_IOCONF = ((AO_LPC_CT_BEEP_FUNC << LPC_IOCONF_FUNC) |
(LPC_IOCONF_MODE_INACTIVE << LPC_IOCONF_MODE) |
(0 << LPC_IOCONF_HYS) |
(0 << LPC_IOCONF_INV) |
(1 << LPC_IOCONF_ADMODE) |
(0 << LPC_IOCONF_OD));
+
+ lpc_scb.sysahbclkctrl |= (1 << AO_LPC_CT_BEEP_CLKCTRL);
+
+ /* Disable the counter and reset the value */
+ AO_LPC_CT_BEEP.tcr = ((0 << LPC_CT32B_TCR_CEN) |
+ (1 << LPC_CT32B_TCR_CRST));
}