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Diffstat (limited to 'ports/stm/common-hal/pulseio/PulseIn.c')
-rw-r--r--ports/stm/common-hal/pulseio/PulseIn.c92
1 files changed, 42 insertions, 50 deletions
diff --git a/ports/stm/common-hal/pulseio/PulseIn.c b/ports/stm/common-hal/pulseio/PulseIn.c
index 015ee8536..ece02f66a 100644
--- a/ports/stm/common-hal/pulseio/PulseIn.c
+++ b/ports/stm/common-hal/pulseio/PulseIn.c
@@ -38,21 +38,18 @@
#include STM32_HAL_H
#define STM32_GPIO_PORT_SIZE 16
-static pulseio_pulsein_obj_t* _objs[STM32_GPIO_PORT_SIZE];
+static pulseio_pulsein_obj_t *_objs[STM32_GPIO_PORT_SIZE];
STATIC TIM_HandleTypeDef tim_handle;
static uint32_t overflow_count = 0;
STATIC uint8_t refcount = 0;
-static void assign_EXTI_Interrupt(pulseio_pulsein_obj_t* self, uint8_t num);
+static void assign_EXTI_Interrupt(pulseio_pulsein_obj_t *self, uint8_t num);
-void pulsein_timer_event_handler(void)
-{
+void pulsein_timer_event_handler(void) {
// Detect TIM Update event
- if (__HAL_TIM_GET_FLAG(&tim_handle, TIM_FLAG_UPDATE) != RESET)
- {
- if (__HAL_TIM_GET_IT_SOURCE(&tim_handle, TIM_IT_UPDATE) != RESET)
- {
+ if (__HAL_TIM_GET_FLAG(&tim_handle, TIM_FLAG_UPDATE) != RESET) {
+ if (__HAL_TIM_GET_IT_SOURCE(&tim_handle, TIM_IT_UPDATE) != RESET) {
__HAL_TIM_CLEAR_IT(&tim_handle, TIM_IT_UPDATE);
overflow_count++;
}
@@ -67,13 +64,15 @@ static void pulsein_exti_event_handler(uint8_t num) {
// Interrupt register must be cleared manually
EXTI->PR = 1 << num;
- pulseio_pulsein_obj_t* self = _objs[num];
- if ( !self ) return;
+ pulseio_pulsein_obj_t *self = _objs[num];
+ if (!self) {
+ return;
+ }
if (self->first_edge) {
// first pulse is opposite state from idle
bool state = HAL_GPIO_ReadPin(pin_port(self->pin->port), pin_mask(self->pin->number));
- if ( self->idle_state != state ) {
+ if (self->idle_state != state) {
self->first_edge = false;
}
} else {
@@ -109,20 +108,20 @@ void pulsein_reset(void) {
refcount = 0;
}
-void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t* self, const mcu_pin_obj_t* pin,
- uint16_t maxlen, bool idle_state) {
+void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t *self, const mcu_pin_obj_t *pin,
+ uint16_t maxlen, bool idle_state) {
// STM32 has one shared EXTI for each pin number, 0-15
uint8_t p_num = pin->number;
- if(_objs[p_num]) {
+ if (_objs[p_num]) {
mp_raise_ValueError(translate("Pin number already reserved by EXTI"));
}
_objs[p_num] = self;
// Allocate pulse buffer
- self->buffer = (uint16_t *) m_malloc(maxlen * sizeof(uint16_t), false);
+ self->buffer = (uint16_t *)m_malloc(maxlen * sizeof(uint16_t), false);
if (self->buffer == NULL) {
mp_raise_msg_varg(&mp_type_MemoryError, translate("Failed to allocate RX buffer of %d bytes"),
- maxlen * sizeof(uint16_t));
+ maxlen * sizeof(uint16_t));
}
// Set internal variables
@@ -138,12 +137,12 @@ void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t* self, const mcu
if (HAL_TIM_Base_GetState(&tim_handle) == HAL_TIM_STATE_RESET) {
// Find a suitable timer
- TIM_TypeDef * tim_instance = stm_peripherals_find_timer();
+ TIM_TypeDef *tim_instance = stm_peripherals_find_timer();
stm_peripherals_timer_reserve(tim_instance);
// Set ticks to 1us
uint32_t source = stm_peripherals_timer_get_source_freq(tim_instance);
- uint32_t prescaler = source/1000000;
+ uint32_t prescaler = source / 1000000;
// Enable clocks and IRQ, set callback
stm_peripherals_timer_preinit(tim_instance, 4, pulsein_timer_event_handler);
@@ -151,7 +150,7 @@ void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t* self, const mcu
// Set the new period
tim_handle.Instance = tim_instance;
tim_handle.Init.Prescaler = prescaler - 1;
- tim_handle.Init.Period = 0x10000 - 1; //65 ms period (maximum)
+ tim_handle.Init.Period = 0x10000 - 1; // 65 ms period (maximum)
HAL_TIM_Base_Init(&tim_handle);
// Set registers manually
@@ -178,15 +177,15 @@ void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t* self, const mcu
common_hal_mcu_pin_claim(pin);
}
-bool common_hal_pulseio_pulsein_deinited(pulseio_pulsein_obj_t* self) {
- return (self->pin == NULL);
+bool common_hal_pulseio_pulsein_deinited(pulseio_pulsein_obj_t *self) {
+ return self->pin == NULL;
}
-void common_hal_pulseio_pulsein_deinit(pulseio_pulsein_obj_t* self) {
+void common_hal_pulseio_pulsein_deinit(pulseio_pulsein_obj_t *self) {
if (common_hal_pulseio_pulsein_deinited(self)) {
return;
}
- //Remove pulsein slot from shared array
+ // Remove pulsein slot from shared array
_objs[self->pin->number] = NULL;
reset_pin_number(self->pin->port, self->pin->number);
self->pin = NULL;
@@ -197,14 +196,14 @@ void common_hal_pulseio_pulsein_deinit(pulseio_pulsein_obj_t* self) {
}
}
-void common_hal_pulseio_pulsein_pause(pulseio_pulsein_obj_t* self) {
+void common_hal_pulseio_pulsein_pause(pulseio_pulsein_obj_t *self) {
HAL_NVIC_DisableIRQ(self->irq);
self->paused = true;
}
-void common_hal_pulseio_pulsein_resume(pulseio_pulsein_obj_t* self, uint16_t trigger_duration) {
+void common_hal_pulseio_pulsein_resume(pulseio_pulsein_obj_t *self, uint16_t trigger_duration) {
// Make sure we're paused.
- if ( !self->paused ) {
+ if (!self->paused) {
common_hal_pulseio_pulsein_pause(self);
}
@@ -235,14 +234,14 @@ void common_hal_pulseio_pulsein_resume(pulseio_pulsein_obj_t* self, uint16_t tri
HAL_NVIC_EnableIRQ(self->irq);
}
-void common_hal_pulseio_pulsein_clear(pulseio_pulsein_obj_t* self) {
+void common_hal_pulseio_pulsein_clear(pulseio_pulsein_obj_t *self) {
HAL_NVIC_DisableIRQ(self->irq);
self->start = 0;
self->len = 0;
HAL_NVIC_EnableIRQ(self->irq);
}
-uint16_t common_hal_pulseio_pulsein_get_item(pulseio_pulsein_obj_t* self, int16_t index) {
+uint16_t common_hal_pulseio_pulsein_get_item(pulseio_pulsein_obj_t *self, int16_t index) {
HAL_NVIC_DisableIRQ(self->irq);
if (index < 0) {
index += self->len;
@@ -256,7 +255,7 @@ uint16_t common_hal_pulseio_pulsein_get_item(pulseio_pulsein_obj_t* self, int16_
return value;
}
-uint16_t common_hal_pulseio_pulsein_popleft(pulseio_pulsein_obj_t* self) {
+uint16_t common_hal_pulseio_pulsein_popleft(pulseio_pulsein_obj_t *self) {
if (self->len == 0) {
mp_raise_IndexError_varg(translate("pop from empty %q"), MP_QSTR_PulseIn);
}
@@ -269,19 +268,19 @@ uint16_t common_hal_pulseio_pulsein_popleft(pulseio_pulsein_obj_t* self) {
return value;
}
-uint16_t common_hal_pulseio_pulsein_get_maxlen(pulseio_pulsein_obj_t* self) {
+uint16_t common_hal_pulseio_pulsein_get_maxlen(pulseio_pulsein_obj_t *self) {
return self->maxlen;
}
-bool common_hal_pulseio_pulsein_get_paused(pulseio_pulsein_obj_t* self) {
+bool common_hal_pulseio_pulsein_get_paused(pulseio_pulsein_obj_t *self) {
return self->paused;
}
-uint16_t common_hal_pulseio_pulsein_get_len(pulseio_pulsein_obj_t* self) {
+uint16_t common_hal_pulseio_pulsein_get_len(pulseio_pulsein_obj_t *self) {
return self->len;
}
-static void assign_EXTI_Interrupt(pulseio_pulsein_obj_t* self, uint8_t num) {
+static void assign_EXTI_Interrupt(pulseio_pulsein_obj_t *self, uint8_t num) {
if (num == 0) {
self->irq = EXTI0_IRQn;
} else if (num == 1) {
@@ -292,49 +291,42 @@ static void assign_EXTI_Interrupt(pulseio_pulsein_obj_t* self, uint8_t num) {
self->irq = EXTI3_IRQn;
} else if (num == 4) {
self->irq = EXTI4_IRQn;
- } else if (num >= 5 && num <= 9 ) {
+ } else if (num >= 5 && num <= 9) {
self->irq = EXTI9_5_IRQn;
} else if (num >= 10 && num <= 15) {
self->irq = EXTI15_10_IRQn;
}
}
-void EXTI0_IRQHandler(void)
-{
+void EXTI0_IRQHandler(void) {
pulsein_exti_event_handler(0);
}
-void EXTI1_IRQHandler(void)
-{
+void EXTI1_IRQHandler(void) {
pulsein_exti_event_handler(1);
}
-void EXTI2_IRQHandler(void)
-{
+void EXTI2_IRQHandler(void) {
pulsein_exti_event_handler(2);
}
-void EXTI3_IRQHandler(void)
-{
+void EXTI3_IRQHandler(void) {
pulsein_exti_event_handler(3);
}
-void EXTI4_IRQHandler(void)
-{
+void EXTI4_IRQHandler(void) {
pulsein_exti_event_handler(4);
}
-void EXTI9_5_IRQHandler(void)
-{
+void EXTI9_5_IRQHandler(void) {
uint32_t pending = EXTI->PR;
for (uint i = 5; i <= 9; i++) {
- if(pending & (1 << i)) {
+ if (pending & (1 << i)) {
pulsein_exti_event_handler(i);
}
}
}
-void EXTI15_10_IRQHandler(void)
-{
+void EXTI15_10_IRQHandler(void) {
uint32_t pending = EXTI->PR;
for (uint i = 10; i <= 15; i++) {
- if(pending & (1 << i)) {
+ if (pending & (1 << i)) {
pulsein_exti_event_handler(i);
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2026-08-08 08:16:25 +0000