diff options
Diffstat (limited to 'os/hal/ports/STM32/LLD/OPAMPv1/hal_opamp_lld.c')
| -rw-r--r-- | os/hal/ports/STM32/LLD/OPAMPv1/hal_opamp_lld.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/OPAMPv1/hal_opamp_lld.c b/os/hal/ports/STM32/LLD/OPAMPv1/hal_opamp_lld.c new file mode 100644 index 0000000..7251002 --- /dev/null +++ b/os/hal/ports/STM32/LLD/OPAMPv1/hal_opamp_lld.c @@ -0,0 +1,184 @@ +/* + ChibiOS - Copyright (C) 2006..2019 Giovanni Di Sirio + Copyright (C) 2019 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_opamp_lld.c + * @brief STM32 Operational Amplifier subsystem low level driver header. + * + * @addtogroup OPAMP + * @{ + */ + +#include "hal.h" + +#if HAL_USE_OPAMP || defined(__DOXYGEN__) + +#include "hal_opamp.h" + +/*===========================================================================*/ +/* Driver local definitions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver exported variables. */ +/*===========================================================================*/ + +/** + * @brief OPAMPD1 driver identifier. + * @note The driver OPAMPD1 allocates the comparator OPAMP1 when enabled. + */ +#if STM32_OPAMP_USE_OPAMP1 || defined(__DOXYGEN__) +OPAMPDriver OPAMPD1; +#endif + +/** + * @brief OPAMPD2 driver identifier. + * @note The driver OPAMPD2 allocates the comparator OPAMP2 when enabled. + */ +#if STM32_OPAMP_USE_OPAMP2 || defined(__DOXYGEN__) +OPAMPDriver OPAMPD2; +#endif + +/** + * @brief OPAMPD3 driver identifier. + * @note The driver OPAMPD3 allocates the comparator OPAMP3 when enabled. + */ +#if STM32_OPAMP_USE_OPAMP3 || defined(__DOXYGEN__) +OPAMPDriver OPAMPD3; +#endif + +/** + * @brief OPAMPD4 driver identifier. + * @note The driver OPAMPD4 allocates the comparator OPAMP4 when enabled. + */ +#if STM32_OPAMP_USE_OPAMP4 || defined(__DOXYGEN__) +OPAMPDriver OPAMPD4; +#endif + +/*===========================================================================*/ +/* Driver local variables and types. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver local functions. */ +/*===========================================================================*/ + + +/*===========================================================================*/ +/* Driver interrupt handlers. */ +/*===========================================================================*/ + + +/*===========================================================================*/ +/* Driver exported functions. */ +/*===========================================================================*/ + +/** + * @brief Low level OPAMP driver initialization. + * + * @notapi + */ +void opamp_lld_init(void) { + +#if STM32_OPAMP_USE_OPAMP1 + /* Driver initialization.*/ + opampObjectInit(&OPAMPD1); + OPAMPD1.reg = OPAMP; + OPAMPD1.reg->CSR = 0; +#endif + +#if STM32_OPAMP_USE_OPAMP2 + /* Driver initialization.*/ + opampObjectInit(&OPAMPD2); + OPAMPD2.reg = OPAMP2; + OPAMPD2.reg->CSR = 0; +#endif + +#if STM32_OPAMP_USE_OPAMP3 + /* Driver initialization.*/ + opampObjectInit(&OPAMPD3); + OPAMPD3.reg = OPAMP3; + OPAMPD3.reg->CSR = 0; +#endif + +#if STM32_OPAMP_USE_OPAMP4 + /* Driver initialization.*/ + opampObjectInit(&OPAMPD4); + OPAMPD4.reg = OPAMP4; + OPAMPD4.reg->CSR = 0; +#endif + +} + +/** + * @brief Configures and activates the OPAMP peripheral. + * + * @param[in] compp pointer to the @p OPAMPDriver object + * + * @notapi + */ +void opamp_lld_start(OPAMPDriver *compp) { + + // Apply CSR Execpt the enable bit. + compp->reg->CSR = compp->config->csr & ~OPAMP_CSR_OPAMPxEN; + +} + +/** + * @brief Deactivates the comp peripheral. + * + * @param[in] compp pointer to the @p OPAMPDriver object + * + * @notapi + */ +void opamp_lld_stop(OPAMPDriver *compp) { + + if (compp->state == OPAMP_READY) { + + compp->reg->CSR = 0; + } + +} + +/** + * @brief Enables the output. + * + * @param[in] compp pointer to the @p OPAMPDriver object + * + * @notapi + */ +void opamp_lld_enable(OPAMPDriver *compp) { + + compp->reg->CSR |= OPAMP_CSR_OPAMPxEN; /* Enable */ +} + +/** + * @brief Disables the output. + * + * @param[in] compp pointer to the @p OPAMPDriver object + * + * @notapi + */ +void opamp_lld_disable(OPAMPDriver *compp) { + + compp->reg->CSR &= ~OPAMP_CSR_OPAMPxEN; /* Disable */ +} + +#endif /* HAL_USE_OPAMP */ + +/** @} */ |