#include "ao.h"
-#ifndef BEEPER_CHANNEL
-#define BEEPER_CHANNEL 1
+#if BEEPER_TIMER == 2
+#define stm_beeper stm_tim2
+#define RCC_BEEPER STM_RCC_APB1ENR_TIM2EN
+#define BEEPER_AFR STM_AFR_AF1
+#elif BEEPER_TIMER == 3
+#define stm_beeper stm_tim3
+#define RCC_BEEPER STM_RCC_APB1ENR_TIM3EN
+#define BEEPER_AFR STM_AFR_AF2
+#elif BEEPER_TIMER == 4
+#define stm_beeper stm_tim4
+#define RCC_BEEPER STM_RCC_APB1ENR_TIM4EN
+#define BEEPER_AFR STM_AFR_AF2
+#else
+#error BEEPER_TIMER must be 2, 3 or 4
#endif
void
ao_beep(uint8_t beep)
{
if (beep == 0) {
- stm_tim3.cr1 = 0;
- stm_rcc.apb1enr &= ~(1 << STM_RCC_APB1ENR_TIM3EN);
+ stm_beeper.cr1 = 0;
+ stm_rcc.apb1enr &= ~(1 << RCC_BEEPER);
} else {
- stm_rcc.apb1enr |= (1 << STM_RCC_APB1ENR_TIM3EN);
+ stm_rcc.apb1enr |= (1 << RCC_BEEPER);
- stm_tim3.cr2 = ((0 << STM_TIM234_CR2_TI1S) |
+ stm_beeper.cr2 = ((0 << STM_TIM234_CR2_TI1S) |
(STM_TIM234_CR2_MMS_RESET << STM_TIM234_CR2_MMS) |
(0 << STM_TIM234_CR2_CCDS));
/* Set prescaler to match cc1111 clocks
*/
- stm_tim3.psc = AO_TIM23467_CLK / 750000;
+ stm_beeper.psc = AO_TIM23467_CLK / 750000;
/* 1. Select the counter clock (internal, external, prescaler).
*
* Setting SMCR to zero means use the internal clock
*/
- stm_tim3.smcr = 0;
+ stm_beeper.smcr = 0;
/* 2. Write the desired data in the TIMx_ARR and TIMx_CCRx registers. */
- stm_tim3.arr = beep;
- stm_tim3.ccr1 = beep;
+ stm_beeper.arr = beep;
+#if BEEPER_CHANNEL == 1
+ stm_beeper.ccr1 = beep;
+#elif BEEPER_CHANNEL == 2
+ stm_beeper.ccr2 = beep;
+#elif BEEPER_CHANNEL == 3
+ stm_beeper.ccr3 = beep;
+#elif BEEPER_CHANNEL == 4
+ stm_beeper.ccr4 = beep;
+#else
+#error invalid BEEPER_CHANNEL
+#endif
/* 3. Set the CCxIE and/or CCxDE bits if an interrupt and/or a
* DMA request is to be generated.
* is enabled and active high.
*/
-#if BEEPER_CHANNEL == 1
- stm_tim3.ccmr1 = ((0 << STM_TIM234_CCMR1_OC2CE) |
- (STM_TIM234_CCMR1_OC2M_FROZEN << STM_TIM234_CCMR1_OC2M) |
- (0 << STM_TIM234_CCMR1_OC2PE) |
- (0 << STM_TIM234_CCMR1_OC2FE) |
- (STM_TIM234_CCMR1_CC2S_OUTPUT << STM_TIM234_CCMR1_CC2S) |
-
- (0 << STM_TIM234_CCMR1_OC1CE) |
- (STM_TIM234_CCMR1_OC1M_TOGGLE << STM_TIM234_CCMR1_OC1M) |
- (0 << STM_TIM234_CCMR1_OC1PE) |
- (0 << STM_TIM234_CCMR1_OC1FE) |
- (STM_TIM234_CCMR1_CC1S_OUTPUT << STM_TIM234_CCMR1_CC1S));
-
- stm_tim3.ccer = ((0 << STM_TIM234_CCER_CC4NP) |
- (0 << STM_TIM234_CCER_CC4P) |
- (0 << STM_TIM234_CCER_CC4E) |
- (0 << STM_TIM234_CCER_CC3NP) |
- (0 << STM_TIM234_CCER_CC3P) |
- (0 << STM_TIM234_CCER_CC3E) |
- (0 << STM_TIM234_CCER_CC2NP) |
- (0 << STM_TIM234_CCER_CC2P) |
- (0 << STM_TIM234_CCER_CC2E) |
- (0 << STM_TIM234_CCER_CC1NP) |
- (0 << STM_TIM234_CCER_CC1P) |
- (1 << STM_TIM234_CCER_CC1E));
+#define OC1M (BEEPER_CHANNEL == 1 ? STM_TIM234_CCMR1_OC1M_TOGGLE : STM_TIM234_CCMR1_OC1M_FROZEN)
+#define OC2M (BEEPER_CHANNEL == 2 ? STM_TIM234_CCMR1_OC2M_TOGGLE : STM_TIM234_CCMR1_OC2M_FROZEN)
+#define OC3M (BEEPER_CHANNEL == 3 ? STM_TIM234_CCMR2_OC3M_TOGGLE : STM_TIM234_CCMR2_OC3M_FROZEN)
+#define OC4M (BEEPER_CHANNEL == 4 ? STM_TIM234_CCMR2_OC4M_TOGGLE : STM_TIM234_CCMR2_OC4M_FROZEN)
+
+#define CCER(n) (BEEPER_CHANNEL == (n) ? 1 : 0)
+
+#if BEEPER_CHANNEL == 1 || BEEPER_CHANNEL == 2
+ stm_beeper.ccmr1 = ((0 << STM_TIM234_CCMR1_OC2CE) |
+ (OC2M << STM_TIM234_CCMR1_OC2M) |
+ (0 << STM_TIM234_CCMR1_OC2PE) |
+ (0 << STM_TIM234_CCMR1_OC2FE) |
+ (STM_TIM234_CCMR1_CC2S_OUTPUT << STM_TIM234_CCMR1_CC2S) |
+
+ (0 << STM_TIM234_CCMR1_OC1CE) |
+ (OC1M << STM_TIM234_CCMR1_OC1M) |
+ (0 << STM_TIM234_CCMR1_OC1PE) |
+ (0 << STM_TIM234_CCMR1_OC1FE) |
+ (STM_TIM234_CCMR1_CC1S_OUTPUT << STM_TIM234_CCMR1_CC1S));
+#elif BEEPER_CHANNEL == 3 || BEEPER_CHANNEL == 4
+ stm_beeper.ccmr2 = ((0 << STM_TIM234_CCMR2_OC4CE) |
+ (OC4M << STM_TIM234_CCMR2_OC4M) |
+ (0 << STM_TIM234_CCMR2_OC4PE) |
+ (0 << STM_TIM234_CCMR2_OC4FE) |
+ (STM_TIM234_CCMR2_CC4S_OUTPUT << STM_TIM234_CCMR2_CC4S) |
+
+ (0 << STM_TIM234_CCMR2_OC3CE) |
+ (OC3M << STM_TIM234_CCMR2_OC3M) |
+ (0 << STM_TIM234_CCMR2_OC3PE) |
+ (0 << STM_TIM234_CCMR2_OC3FE) |
+ (STM_TIM234_CCMR2_CC3S_OUTPUT << STM_TIM234_CCMR2_CC3S));
+#else
+#error invalid BEEPER_CHANNEL
#endif
-#if BEEPER_CHANNEL == 4
- stm_tim3.ccmr2 = ((0 << STM_TIM234_CCMR2_OC4CE) |
- (STM_TIM234_CCMR2_OC4M_TOGGLE << STM_TIM234_CCMR2_OC4M) |
- (0 << STM_TIM234_CCMR2_OC4PE) |
- (0 << STM_TIM234_CCMR2_OC4FE) |
- (STM_TIM234_CCMR2_CC4S_OUTPUT << STM_TIM234_CCMR2_CC4S) |
-
- (0 << STM_TIM234_CCMR2_OC3CE) |
- (STM_TIM234_CCMR2_OC3M_FROZEN << STM_TIM234_CCMR2_OC3M) |
- (0 << STM_TIM234_CCMR2_OC3PE) |
- (0 << STM_TIM234_CCMR2_OC3FE) |
- (STM_TIM234_CCMR2_CC3S_OUTPUT << STM_TIM234_CCMR2_CC3S));
-
- stm_tim3.ccer = ((0 << STM_TIM234_CCER_CC4NP) |
- (0 << STM_TIM234_CCER_CC4P) |
- (1 << STM_TIM234_CCER_CC4E) |
- (0 << STM_TIM234_CCER_CC3NP) |
- (0 << STM_TIM234_CCER_CC3P) |
- (0 << STM_TIM234_CCER_CC3E) |
- (0 << STM_TIM234_CCER_CC2NP) |
- (0 << STM_TIM234_CCER_CC2P) |
- (0 << STM_TIM234_CCER_CC2E) |
- (0 << STM_TIM234_CCER_CC1NP) |
- (0 << STM_TIM234_CCER_CC1P) |
- (0 << STM_TIM234_CCER_CC1E));
-#endif
-
+ stm_beeper.ccer = ((0 << STM_TIM234_CCER_CC4NP) |
+ (0 << STM_TIM234_CCER_CC4P) |
+ (CCER(4) << STM_TIM234_CCER_CC4E) |
+ (0 << STM_TIM234_CCER_CC3NP) |
+ (0 << STM_TIM234_CCER_CC3P) |
+ (CCER(3) << STM_TIM234_CCER_CC3E) |
+ (0 << STM_TIM234_CCER_CC2NP) |
+ (0 << STM_TIM234_CCER_CC2P) |
+ (CCER(2) << STM_TIM234_CCER_CC2E) |
+ (0 << STM_TIM234_CCER_CC1NP) |
+ (0 << STM_TIM234_CCER_CC1P) |
+ (CCER(1) << STM_TIM234_CCER_CC1E));
/* 5. Enable the counter by setting the CEN bit in the TIMx_CR1 register. */
- stm_tim3.cr1 = ((STM_TIM234_CR1_CKD_1 << STM_TIM234_CR1_CKD) |
+ stm_beeper.cr1 = ((STM_TIM234_CR1_CKD_1 << STM_TIM234_CR1_CKD) |
(0 << STM_TIM234_CR1_ARPE) |
(STM_TIM234_CR1_CMS_EDGE << STM_TIM234_CR1_CMS) |
(0 << STM_TIM234_CR1_DIR) |
(1 << STM_TIM234_CR1_CEN));
/* Update the values */
- stm_tim3.egr = (1 << STM_TIM234_EGR_UG);
+ stm_beeper.egr = (1 << STM_TIM234_EGR_UG);
}
}
void
-ao_beep_for(uint8_t beep, uint16_t ticks)
+ao_beep_for(uint8_t beep, uint16_t ticks)
{
ao_beep(beep);
ao_delay(ticks);
void
ao_beep_init(void)
{
-#if BEEPER_CHANNEL == 1
-
- /* Our beeper is on PC6, which is hooked to TIM3_CH1.
- */
- stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOCEN);
-
- stm_afr_set(&stm_gpioc, 6, STM_AFR_AF2);
-#endif
-#if BEEPER_CHANNEL == 4
-
- /* Our beeper is on PB1, which is hooked to TIM3_CH4.
- */
- stm_rcc.ahbenr |= (1 << STM_RCC_AHBENR_GPIOBEN);
-
- stm_afr_set(&stm_gpiob, 1, STM_AFR_AF2);
-#endif
+ ao_enable_port(BEEPER_PORT);
+ stm_afr_set(BEEPER_PORT, BEEPER_PIN, BEEPER_AFR);
/* Leave the timer off until requested */
-
- stm_rcc.apb1enr &= ~(1 << STM_RCC_APB1ENR_TIM3EN);
+ stm_rcc.apb1enr &= ~(1 << RCC_BEEPER);
}
projects / fw / altos / blobdiff