#error BEEPER_CHANNEL undefined
#endif
+#ifndef BEEPER_TIMER
+#define BEEPER_TIMER 1
+#endif
+
+#ifndef BEEPER_AFR
+#define BEEPER_AFR STM_AFR_AF2
+#endif
+
+#if BEEPER_TIMER == 1
+#define timer stm_tim1
+#define STM_RCC_TIMER STM_RCC_APB2ENR_TIM1EN
+#define stm_rcc_enr stm_rcc.apb2enr
+#endif
+
+#if BEEPER_TIMER == 2
+#define timer stm_tim2
+#define STM_RCC_TIMER STM_RCC_APB1ENR_TIM2EN
+#define stm_rcc_enr stm_rcc.apb1enr
+#endif
+
+#if BEEPER_TIMER == 3
+#define timer stm_tim3
+#define STM_RCC_TIMER STM_RCC_APB1ENR_TIM3EN
+#define stm_rcc_enr stm_rcc.apb1enr
+#endif
+
+#ifndef timer
+#error BEEPER_TIMER invalid
+#endif
+
+static inline void
+disable(void)
+{
+ timer.cr1 = 0;
+#if BEEPER_TIMER == 1
+ timer.bdtr = 0;
+#endif
+ stm_rcc_enr &= ~(1 << STM_RCC_TIMER);
+
+ /* Disconnect the timer from the pin */
+ stm_afr_set(BEEPER_PORT, BEEPER_PIN, STM_AFR_NONE);
+}
+
void
ao_beep(uint8_t beep)
{
if (beep == 0) {
- stm_tim1.cr1 = 0;
- stm_tim1.bdtr = 0;
- stm_rcc.apb2enr &= ~(1 << STM_RCC_APB2ENR_TIM1EN);
+ disable();
} else {
- stm_rcc.apb2enr |= (1 << STM_RCC_APB2ENR_TIM1EN);
+ stm_rcc_enr |= (1 << STM_RCC_TIMER);
+#if BEEPER_TIMER == 1
/* Master output enable */
stm_tim1.bdtr = (1 << STM_TIM1_BDTR_MOE);
/* Update the values */
stm_tim1.egr = (1 << STM_TIM1_EGR_UG);
+#endif
+#if BEEPER_TIMER == 2 || BEEPER_TIMER == 3
+
+ timer.cr2 = ((0 << STM_TIM23_CR2_TI1S) |
+ (STM_TIM23_CR2_MMS_RESET << STM_TIM23_CR2_MMS) |
+ (0 << STM_TIM23_CR2_CCDS));
+
+ /* Set prescaler to match cc1111 clocks
+ */
+ timer.psc = AO_TIM_CLK / 750000;
+
+ /* 1. Select the counter clock (internal, external, prescaler).
+ *
+ * Setting SMCR to zero means use the internal clock
+ */
+
+ timer.smcr = 0;
+
+ /* 2. Write the desired data in the TIMx_ARR and TIMx_CCRx registers. */
+ timer.arr = beep;
+ timer.ccr1 = beep;
+
+ /* 3. Set the CCxIE and/or CCxDE bits if an interrupt and/or a
+ * DMA request is to be generated.
+ */
+ /* don't want this */
+
+ /* 4. Select the output mode. For example, you must write
+ * OCxM=011, OCxPE=0, CCxP=0 and CCxE=1 to toggle OCx output
+ * pin when CNT matches CCRx, CCRx preload is not used, OCx
+ * is enabled and active high.
+ */
+
+#if BEEPER_CHANNEL == 1
+ timer.ccmr1 = ((0 << STM_TIM23_CCMR1_OC2CE) |
+ (STM_TIM23_CCMR1_OC2M_FROZEN << STM_TIM23_CCMR1_OC2M) |
+ (0 << STM_TIM23_CCMR1_OC2PE) |
+ (0 << STM_TIM23_CCMR1_OC2FE) |
+ (STM_TIM23_CCMR1_CC2S_OUTPUT << STM_TIM23_CCMR1_CC2S) |
+
+ (0 << STM_TIM23_CCMR1_OC1CE) |
+ (STM_TIM23_CCMR1_OC1M_TOGGLE << STM_TIM23_CCMR1_OC1M) |
+ (0 << STM_TIM23_CCMR1_OC1PE) |
+ (0 << STM_TIM23_CCMR1_OC1FE) |
+ (STM_TIM23_CCMR1_CC1S_OUTPUT << STM_TIM23_CCMR1_CC1S));
+
+ timer.ccer = ((0 << STM_TIM23_CCER_CC4P) |
+ (0 << STM_TIM23_CCER_CC4E) |
+ (0 << STM_TIM23_CCER_CC3NP) |
+ (0 << STM_TIM23_CCER_CC3P) |
+ (0 << STM_TIM23_CCER_CC3E) |
+ (0 << STM_TIM23_CCER_CC2NP) |
+ (0 << STM_TIM23_CCER_CC2P) |
+ (0 << STM_TIM23_CCER_CC2E) |
+ (0 << STM_TIM23_CCER_CC1P) |
+ (1 << STM_TIM23_CCER_CC1E));
+#endif
+#if BEEPER_CHANNEL == 2
+ timer.ccmr1 = ((0 << STM_TIM23_CCMR1_OC2CE) |
+ (STM_TIM23_CCMR1_OC2M_TOGGLE << STM_TIM23_CCMR1_OC2M) |
+ (0 << STM_TIM23_CCMR1_OC2PE) |
+ (0 << STM_TIM23_CCMR1_OC2FE) |
+ (STM_TIM23_CCMR1_CC2S_OUTPUT << STM_TIM23_CCMR1_CC2S) |
+
+ (0 << STM_TIM23_CCMR1_OC1CE) |
+ (STM_TIM23_CCMR1_OC1M_FROZEN << STM_TIM23_CCMR1_OC1M) |
+ (0 << STM_TIM23_CCMR1_OC1PE) |
+ (0 << STM_TIM23_CCMR1_OC1FE) |
+ (STM_TIM23_CCMR1_CC1S_OUTPUT << STM_TIM23_CCMR1_CC1S));
+
+ timer.ccer = ((0 << STM_TIM23_CCER_CC4P) |
+ (0 << STM_TIM23_CCER_CC4E) |
+ (0 << STM_TIM23_CCER_CC3NP) |
+ (0 << STM_TIM23_CCER_CC3P) |
+ (0 << STM_TIM23_CCER_CC3E) |
+ (0 << STM_TIM23_CCER_CC2NP) |
+ (0 << STM_TIM23_CCER_CC2P) |
+ (1 << STM_TIM23_CCER_CC2E) |
+ (0 << STM_TIM23_CCER_CC1P) |
+ (0 << STM_TIM23_CCER_CC1E));
+#endif
+#if BEEPER_CHANNEL == 3
+ timer.ccmr2 = ((0 << STM_TIM23_CCMR2_OC4CE) |
+ (STM_TIM23_CCMR2_OC4M_FROZEN << STM_TIM23_CCMR2_OC4M) |
+ (0 << STM_TIM23_CCMR2_OC4PE) |
+ (0 << STM_TIM23_CCMR2_OC4FE) |
+ (STM_TIM23_CCMR2_CC4S_OUTPUT << STM_TIM23_CCMR2_CC4S) |
+
+ (0 << STM_TIM23_CCMR2_OC3CE) |
+ (STM_TIM23_CCMR2_OC3M_TOGGLE << STM_TIM23_CCMR2_OC3M) |
+ (0 << STM_TIM23_CCMR2_OC3PE) |
+ (0 << STM_TIM23_CCMR2_OC3FE) |
+ (STM_TIM23_CCMR2_CC3S_OUTPUT << STM_TIM23_CCMR2_CC3S));
+
+ timer.ccer = ((0 << STM_TIM23_CCER_CC4P) |
+ (0 << STM_TIM23_CCER_CC4E) |
+ (0 << STM_TIM23_CCER_CC3NP) |
+ (0 << STM_TIM23_CCER_CC3P) |
+ (1 << STM_TIM23_CCER_CC3E) |
+ (0 << STM_TIM23_CCER_CC2NP) |
+ (0 << STM_TIM23_CCER_CC2P) |
+ (0 << STM_TIM23_CCER_CC2E) |
+ (0 << STM_TIM23_CCER_CC1P) |
+ (0 << STM_TIM23_CCER_CC1E));
+#endif
+#if BEEPER_CHANNEL == 4
+ timer.ccmr2 = ((0 << STM_TIM23_CCMR2_OC4CE) |
+ (STM_TIM23_CCMR2_OC4M_TOGGLE << STM_TIM23_CCMR2_OC4M) |
+ (0 << STM_TIM23_CCMR2_OC4PE) |
+ (0 << STM_TIM23_CCMR2_OC4FE) |
+ (STM_TIM23_CCMR2_CC4S_OUTPUT << STM_TIM23_CCMR2_CC4S) |
+
+ (0 << STM_TIM23_CCMR2_OC3CE) |
+ (STM_TIM23_CCMR2_OC3M_FROZEN << STM_TIM23_CCMR2_OC3M) |
+ (0 << STM_TIM23_CCMR2_OC3PE) |
+ (0 << STM_TIM23_CCMR2_OC3FE) |
+ (STM_TIM23_CCMR2_CC3S_OUTPUT << STM_TIM23_CCMR2_CC3S));
+
+ timer.ccer = ((0 << STM_TIM23_CCER_CC4P) |
+ (1 << STM_TIM23_CCER_CC4E) |
+ (0 << STM_TIM23_CCER_CC3NP) |
+ (0 << STM_TIM23_CCER_CC3P) |
+ (0 << STM_TIM23_CCER_CC3E) |
+ (0 << STM_TIM23_CCER_CC2NP) |
+ (0 << STM_TIM23_CCER_CC2P) |
+ (0 << STM_TIM23_CCER_CC2E) |
+ (0 << STM_TIM23_CCER_CC1P) |
+ (0 << STM_TIM23_CCER_CC1E));
+#endif
+ /* 5. Enable the counter by setting the CEN bit in the TIMx_CR1 register. */
+
+ timer.cr1 = ((STM_TIM23_CR1_CKD_1 << STM_TIM23_CR1_CKD) |
+ (0 << STM_TIM23_CR1_ARPE) |
+ (STM_TIM23_CR1_CMS_EDGE << STM_TIM23_CR1_CMS) |
+ (0 << STM_TIM23_CR1_DIR) |
+ (0 << STM_TIM23_CR1_OPM) |
+ (0 << STM_TIM23_CR1_URS) |
+ (0 << STM_TIM23_CR1_UDIS) |
+ (1 << STM_TIM23_CR1_CEN));
+
+ /* Update the values */
+ timer.egr = (1 << STM_TIM23_EGR_UG);
+
+ /* Hook the timer up to the beeper pin */
+ stm_afr_set(BEEPER_PORT, BEEPER_PIN, BEEPER_AFR);
+#endif
}
}
void
ao_beep_init(void)
{
-#if BEEPER_CHANNEL == 3
- /* Our beeper is on PA10, which is hooked to TIM1_CH3.
- */
- ao_enable_port(&stm_gpioa);
- stm_afr_set(&stm_gpioa, 10, STM_AFR_AF2);
-#else
- ao_enable_port(BEEPER_PORT);
- stm_afr_set(BEEPER_PORT, BEEPER_PIN, STM_AFR_AF2);
-#endif
- /* Leave the timer off until requested */
+ ao_enable_output(BEEPER_PORT, BEEPER_PIN, BEEPER, 0);
- stm_rcc.apb2enr &= ~(1 << STM_RCC_APB2ENR_TIM1EN);
+ /* Leave the timer off until requested */
+ stm_rcc_enr &= ~(1 << STM_RCC_TIMER);
}
projects / fw / altos / blobdiff