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/*
ChibiOS - Copyright (C) 2006..2017 Giovanni Di Sirio
Copyright (C) 2017 Fabien Poussin (fabien.poussin (at) google's mail)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file STM32/hal_comp_lld.c
* @brief STM32 Comp subsystem low level driver header.
*
* @addtogroup COMP
* @{
*/
#include "hal.h"
#if HAL_USE_COMP || defined(__DOXYGEN__)
#include "hal_comp.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/**
* @brief COMPD1 driver identifier.
* @note The driver COMPD1 allocates the comparator COMP1 when enabled.
*/
#if STM32_COMP_USE_COMP1 || defined(__DOXYGEN__)
COMPDriver COMPD1;
#endif
/**
* @brief COMPD2 driver identifier.
* @note The driver COMPD2 allocates the comparator COMP2 when enabled.
*/
#if STM32_COMP_USE_COMP2 || defined(__DOXYGEN__)
COMPDriver COMPD2;
#endif
/**
* @brief COMPD3 driver identifier.
* @note The driver COMPD3 allocates the comparator COMP3 when enabled.
*/
#if STM32_COMP_USE_COMP3 || defined(__DOXYGEN__)
COMPDriver COMPD3;
#endif
/**
* @brief COMPD4 driver identifier.
* @note The driver COMPD4 allocates the comparator COMP4 when enabled.
*/
#if STM32_COMP_USE_COMP4 || defined(__DOXYGEN__)
COMPDriver COMPD4;
#endif
/**
* @brief COMPD5 driver identifier.
* @note The driver COMPD5 allocates the comparator COMP5 when enabled.
*/
#if STM32_COMP_USE_COMP5 || defined(__DOXYGEN__)
COMPDriver COMPD5;
#endif
/**
* @brief COMPD6 driver identifier.
* @note The driver COMPD6 allocates the comparator COMP6 when enabled.
*/
#if STM32_COMP_USE_COMP6 || defined(__DOXYGEN__)
COMPDriver COMPD6;
#endif
/**
* @brief COMPD7 driver identifier.
* @note The driver COMPD7 allocates the comparator COMP7 when enabled.
*/
#if STM32_COMP_USE_COMP7 || defined(__DOXYGEN__)
COMPDriver COMPD7;
#endif
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level COMP driver initialization.
*
* @notapi
*/
void comp_lld_init(void) {
#if STM32_COMP_USE_COMP1
/* Driver initialization.*/
compObjectInit(&COMPD1);
COMPD1.reg = COMP;
COMPD1.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP1_2_3_IRQn, STM32_COMP_1_2_3_IRQ_PRIORITY);
#endif
#endif
#if STM32_COMP_USE_COMP2
/* Driver initialization.*/
compObjectInit(&COMPD2);
COMPD2.reg = COMP2;
COMPD2.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP1_2_3_IRQn, STM32_COMP_1_2_3_IRQ_PRIORITY);
#endif
#endif
#if STM32_COMP_USE_COMP3
/* Driver initialization.*/
compObjectInit(&COMPD3);
COMPD3.reg = COMP3;
COMPD3.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP1_2_3_IRQn, STM32_COMP_1_2_3_IRQ_PRIORITY);
#endif
#endif
#if STM32_COMP_USE_COMP4
/* Driver initialization.*/
compObjectInit(&COMPD4);
COMPD4.reg = COMP4;
COMPD4.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP4_5_6_IRQn, STM32_COMP_1_2_3_IRQ_PRIORITY);
#endif
#endif
#if STM32_COMP_USE_COMP5
/* Driver initialization.*/
compObjectInit(&COMPD5);
COMPD5.reg = COMP5;
COMPD5.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP4_5_6_IRQn, STM32_COMP_1_2_3_IRQ_PRIORITY);
#endif
#endif
#if STM32_COMP_USE_COMP6
/* Driver initialization.*/
compObjectInit(&COMPD6);
COMPD6.reg = COMP6;
COMPD6.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP4_5_6_IRQn, STM32_COMP_1_2_3_IRQ_PRIORITY);
#endif
#endif
#if STM32_COMP_USE_COMP7
/* Driver initialization.*/
compObjectInit(&COMPD7);
COMPD7.reg = COMP7;
COMPD7.reg->CSR = 0;
#if STM32_COMP_USE_INTERRUPTS
nvicEnableVector(COMP7_IRQn, STM32_COMP_7_IRQ_PRIORITY);
#endif
#endif
}
/**
* @brief COMP1, COMP2, COMP3 interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(Vector140) {
uint32_t pr;
OSAL_IRQ_PROLOGUE();
pr = EXTI->PR;
pr &= EXTI->IMR & ((1U << 21) | (1U << 22) | (1U << 29));
EXTI->PR = pr;
#if STM32_COMP_USE_COMP1
if (pr & (1U << 21) && COMPD1.config->cb != NULL)
COMPD1.config->cb(&COMPD1);
#endif
#if STM32_COMP_USE_COMP2
if (pr & (1U << 22) && COMPD2.config->cb != NULL)
COMPD2.config->cb(&COMPD2);
#endif
#if STM32_COMP_USE_COMP3
if (pr & (1U << 29) && COMPD3.config->cb != NULL)
COMPD3.config->cb(&COMPD3);
#endif
OSAL_IRQ_EPILOGUE();
}
/**
* @brief COMP4, COMP5, COMP6 interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(Vector144) {
uint32_t pr;
OSAL_IRQ_PROLOGUE();
pr = EXTI->PR;
pr &= EXTI->IMR & ((1U << 30) | (1U << 31));
EXTI->PR = pr;
#if STM32_COMP_USE_COMP4
if (pr & (1U << 30) && COMPD4.config->cb != NULL)
COMPD4.config->cb(&COMPD4);
#endif
#if STM32_COMP_USE_COMP5
if (pr & (1U << 31) && COMPD5.config->cb != NULL)
COMPD5.config->cb(&COMPD5);
#endif
#if STM32_COMP_USE_COMP6
pr = EXTI->PR2 & EXTI->IMR2 & (1U << 0);
EXTI->PR2 = pr;
if (pr & (1U << 0) && COMPD6.config->cb != NULL)
COMPD6.config->cb(&COMPD6);
#endif
OSAL_IRQ_EPILOGUE();
}
/**
* @brief COMP7 interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(Vector148) {
uint32_t pr2;
OSAL_IRQ_PROLOGUE();
pr2 = EXTI->PR2;
pr2 = EXTI->IMR & (1U << 1);
EXTI->PR2 = pr2;
#if STM32_COMP_USE_COMP7
if (pr2 & (1U << 1) && COMPD7.config->cb != NULL)
COMPD7.config->cb(&COMPD7);
#endif
OSAL_IRQ_EPILOGUE();
}
/**
* @brief Configures and activates the COMP peripheral.
*
* @param[in] compp pointer to the @p COMPDriver object
*
* @notapi
*/
void comp_lld_start(COMPDriver *compp) {
// Apply CSR Execpt the enable bit.
compp->reg->CSR = compp->config->csr & ~COMP_CSR_COMPxEN;
// Inverted output
if (compp->config->mode == COMP_OUTPUT_INVERTED)
compp->reg->CSR |= COMP_CSR_COMPxPOL;
}
/**
* @brief Deactivates the comp peripheral.
*
* @param[in] compp pointer to the @p COMPDriver object
*
* @notapi
*/
void comp_lld_stop(COMPDriver *compp) {
if (compp->state == COMP_READY) {
compp->reg->CSR = 0;
}
}
/**
* @brief Enables the output.
*
* @param[in] compp pointer to the @p COMPDriver object
*
* @notapi
*/
void comp_lld_enable(COMPDriver *compp) {
compp->reg->CSR |= COMP_CSR_COMPxEN; /* Enable */
}
/**
* @brief Disables the output.
*
* @param[in] compp pointer to the @p COMPDriver object
*
* @notapi
*/
void comp_lld_disable(COMPDriver *compp) {
compp->reg->CSR &= ~COMP_CSR_COMPxEN; /* Disable */
}
#endif /* HAL_USE_COMP */
/** @} */
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