diff options
Diffstat (limited to 'os/hal/ports/STM32/STM32F37x/hal_adc_lld.c')
| -rw-r--r-- | os/hal/ports/STM32/STM32F37x/hal_adc_lld.c | 735 |
1 files changed, 735 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/STM32F37x/hal_adc_lld.c b/os/hal/ports/STM32/STM32F37x/hal_adc_lld.c new file mode 100644 index 000000000..5262c1ed8 --- /dev/null +++ b/os/hal/ports/STM32/STM32F37x/hal_adc_lld.c @@ -0,0 +1,735 @@ +/*
+ ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
+
+ 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 STM32F37x/adc_lld.c
+ * @brief STM32F37x ADC subsystem low level driver source.
+ *
+ * @addtogroup ADC
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_ADC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#define SDADC_FORBIDDEN_CR1_FLAGS (SDADC_CR1_INIT | SDADC_CR1_RDMAEN | \
+ SDADC_CR1_RSYNC | SDADC_CR1_JSYNC | \
+ SDADC_CR1_ROVRIE | SDADC_CR1_REOCIE | \
+ SDADC_CR1_JEOCIE | SDADC_CR1_EOCALIE)
+
+#define SDADC_ENFORCED_CR1_FLAGS (SDADC_CR1_JDMAEN | SDADC_CR1_JOVRIE)
+
+#define SDADC_FORBIDDEN_CR2_FLAGS (SDADC_CR2_RSWSTART | \
+ SDADC_CR2_RCONT | \
+ SDADC_CR2_RCH | \
+ SDADC_CR2_JCONT | \
+ SDADC_CR2_STARTCALIB | \
+ SDADC_CR2_CALIBCNT)
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/** @brief ADC1 driver identifier.*/
+#if STM32_ADC_USE_ADC1 || defined(__DOXYGEN__)
+ADCDriver ADCD1;
+#endif
+
+/** @brief SDADC1 driver identifier.*/
+#if STM32_ADC_USE_SDADC1 || defined(__DOXYGEN__)
+ADCDriver SDADCD1;
+#endif
+
+/** @brief SDADC2 driver identifier.*/
+#if STM32_ADC_USE_SDADC2 || defined(__DOXYGEN__)
+ADCDriver SDADCD2;
+#endif
+
+/** @brief SDADC3 driver identifier.*/
+#if STM32_ADC_USE_SDADC3 || defined(__DOXYGEN__)
+ADCDriver SDADCD3;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+static const ADCConfig adc_lld_default_config = {
+#if STM32_ADC_USE_SDADC
+ 0,
+ {
+ 0,
+ 0,
+ 0
+ }
+#else /* !STM32_ADC_USE_SDADC */
+ 0
+#endif /* !STM32_ADC_USE_SDADC */
+};
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Stops, reconfigures and restarts an ADC/SDADC.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ */
+static void adc_lld_reconfig(ADCDriver *adcp) {
+
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ if (adcp->adc != NULL)
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_ADC
+ {
+ /* ADC initial setup, starting the analog part here in order to reduce
+ the latency when starting a conversion.*/
+ uint32_t cr2 = adcp->adc->CR2 & ADC_CR2_TSVREFE;
+ adcp->adc->CR2 = cr2;
+ adcp->adc->CR1 = 0;
+ adcp->adc->CR2 = cr2 | ADC_CR2_ADON;
+
+ }
+#endif /* STM32_ADC_USE_ADC */
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ else if (adcp->sdadc != NULL)
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_SDADC
+ {
+ /* SDADC initial setup, starting the analog part here in order to reduce
+ the latency when starting a conversion.*/
+ adcp->sdadc->CR2 = 0;
+ adcp->sdadc->CR1 = (adcp->config->cr1 | SDADC_ENFORCED_CR1_FLAGS) &
+ ~SDADC_FORBIDDEN_CR1_FLAGS;
+ adcp->sdadc->CONF0R = (adcp->sdadc->CONF0R & SDADC_CONFR_OFFSET_MASK) |
+ adcp->config->confxr[0];
+ adcp->sdadc->CONF1R = (adcp->sdadc->CONF1R & SDADC_CONFR_OFFSET_MASK) |
+ adcp->config->confxr[1];
+ adcp->sdadc->CONF2R = (adcp->sdadc->CONF2R & SDADC_CONFR_OFFSET_MASK) |
+ adcp->config->confxr[2];
+ adcp->sdadc->CR2 = SDADC_CR2_ADON;
+ }
+#endif /* STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+else {
+ osalDbgAssert(FALSE, "invalid state");
+ }
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+}
+
+/**
+ * @brief ADC DMA ISR service routine.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ * @param[in] flags pre-shifted content of the ISR register
+ *
+ * @notapi
+ */
+static void adc_lld_serve_dma_interrupt(ADCDriver *adcp, uint32_t flags) {
+
+ /* DMA errors handling.*/
+ if ((flags & (STM32_DMA_ISR_TEIF | STM32_DMA_ISR_DMEIF)) != 0) {
+ /* DMA, this could help only if the DMA tries to access an unmapped
+ address space or violates alignment rules.*/
+ _adc_isr_error_code(adcp, ADC_ERR_DMAFAILURE);
+ }
+ else {
+ /* It is possible that the conversion group has already be reset by the
+ ADC error handler, in this case this interrupt is spurious.*/
+ if (adcp->grpp != NULL) {
+ if ((flags & STM32_DMA_ISR_TCIF) != 0) {
+ /* Transfer complete processing.*/
+ _adc_isr_full_code(adcp);
+ }
+ else if ((flags & STM32_DMA_ISR_HTIF) != 0) {
+ /* Half transfer processing.*/
+ _adc_isr_half_code(adcp);
+ }
+ }
+ }
+}
+
+#if STM32_ADC_USE_ADC || defined(__DOXYGEN__)
+/**
+ * @brief ADC ISR service routine.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ * @param[in] sr content of the ISR register
+ *
+ * @notapi
+ */
+static void adc_lld_serve_interrupt(ADCDriver *adcp, uint32_t sr) {
+
+ /* It could be a spurious interrupt caused by overflows after DMA disabling,
+ just ignore it in this case.*/
+ if (adcp->grpp != NULL) {
+ if (sr & ADC_SR_AWD) {
+ /* Analog watchdog error.*/
+ _adc_isr_error_code(adcp, ADC_ERR_AWD1);
+ }
+ }
+}
+#endif /* STM32_ADC_USE_ADC */
+
+#if STM32_ADC_USE_SDADC || defined(__DOXYGEN__)
+/**
+ * @brief ADC ISR service routine.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ * @param[in] isr content of the ISR register
+ *
+ * @notapi
+ */
+static void sdadc_lld_serve_interrupt(ADCDriver *adcp, uint32_t isr) {
+
+ /* It could be a spurious interrupt caused by overflows after DMA disabling,
+ just ignore it in this case.*/
+ if (adcp->grpp != NULL) {
+ /* Note, an overflow may occur after the conversion ended before the driver
+ is able to stop the ADC, this is why the DMA channel is checked too.*/
+ if ((isr & SDADC_ISR_JOVRF) &&
+ (dmaStreamGetTransactionSize(adcp->dmastp) > 0)) {
+ /* ADC overflow condition, this could happen only if the DMA is unable
+ to read data fast enough.*/
+ _adc_isr_error_code(adcp, ADC_ERR_OVERFLOW);
+ }
+ }
+}
+#endif /* STM32_ADC_USE_SDADC */
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+#if STM32_ADC_USE_ADC1 || defined(__DOXYGEN__)
+/**
+ * @brief ADC1 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector88) {
+ uint32_t sr;
+
+ OSAL_IRQ_PROLOGUE();
+
+ sr = ADC1->SR;
+ ADC1->SR = 0;
+ adc_lld_serve_interrupt(&ADCD1, sr);
+
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* STM32_ADC_USE_ADC1 */
+
+#if STM32_ADC_USE_SDADC1 || defined(__DOXYGEN__)
+/**
+ * @brief SDADC1 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector134) {
+ uint32_t isr;
+
+ OSAL_IRQ_PROLOGUE();
+
+ isr = SDADC1->ISR;
+ SDADC1->CLRISR = isr;
+ sdadc_lld_serve_interrupt(&SDADCD1, isr);
+
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* STM32_ADC_USE_SDADC1 */
+
+#if STM32_ADC_USE_SDADC2 || defined(__DOXYGEN__)
+/**
+ * @brief SDADC2 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector138) {
+ uint32_t isr;
+
+ OSAL_IRQ_PROLOGUE();
+
+ isr = SDADC2->ISR;
+ SDADC2->CLRISR = isr;
+ sdadc_lld_serve_interrupt(&SDADCD2, isr);
+
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* STM32_ADC_USE_SDADC2 */
+
+#if STM32_ADC_USE_SDADC3 || defined(__DOXYGEN__)
+/**
+ * @brief SDADC3 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector13C) {
+ uint32_t isr;
+
+ OSAL_IRQ_PROLOGUE();
+
+ isr = SDADC3->ISR;
+ SDADC3->CLRISR = isr;
+ sdadc_lld_serve_interrupt(&SDADCD3, isr);
+
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* STM32_ADC_USE_SDADC3 */
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level ADC driver initialization.
+ *
+ * @notapi
+ */
+void adc_lld_init(void) {
+
+#if STM32_ADC_USE_ADC1
+ /* Driver initialization.*/
+ adcObjectInit(&ADCD1);
+ ADCD1.adc = ADC1;
+#if STM32_ADC_USE_SDADC
+ ADCD1.sdadc = NULL;
+#endif
+ ADCD1.dmastp = STM32_DMA1_STREAM1;
+ ADCD1.dmamode = STM32_DMA_CR_CHSEL(ADC1_DMA_CHANNEL) |
+ STM32_DMA_CR_PL(STM32_ADC_ADC1_DMA_PRIORITY) |
+ STM32_DMA_CR_DIR_P2M |
+ STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD |
+ STM32_DMA_CR_MINC | STM32_DMA_CR_TCIE |
+ STM32_DMA_CR_DMEIE | STM32_DMA_CR_TEIE;
+ nvicEnableVector(ADC1_IRQn, STM32_ADC_ADC1_IRQ_PRIORITY);
+#endif
+
+#if STM32_ADC_USE_SDADC1
+ /* Driver initialization.*/
+ adcObjectInit(&SDADCD1);
+#if STM32_ADC_USE_ADC
+ SDADCD1.adc = NULL;
+#endif
+ SDADCD1.sdadc = SDADC1;
+ SDADCD1.dmastp = STM32_DMA2_STREAM3;
+ SDADCD1.dmamode = STM32_DMA_CR_CHSEL(SDADC1_DMA_CHANNEL) |
+ STM32_DMA_CR_PL(STM32_ADC_SDADC1_DMA_PRIORITY) |
+ STM32_DMA_CR_DIR_P2M |
+ STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD |
+ STM32_DMA_CR_MINC | STM32_DMA_CR_TCIE |
+ STM32_DMA_CR_DMEIE | STM32_DMA_CR_TEIE;
+ nvicEnableVector(SDADC1_IRQn, STM32_ADC_SDADC1_IRQ_PRIORITY);
+#endif
+
+#if STM32_ADC_USE_SDADC2
+ /* Driver initialization.*/
+ adcObjectInit(&SDADCD2);
+#if STM32_ADC_USE_ADC
+ SDADCD2.adc = NULL;
+#endif
+ SDADCD2.sdadc = SDADC2;
+ SDADCD2.dmastp = STM32_DMA2_STREAM4;
+ SDADCD2.dmamode = STM32_DMA_CR_CHSEL(SDADC2_DMA_CHANNEL) |
+ STM32_DMA_CR_PL(STM32_ADC_SDADC2_DMA_PRIORITY) |
+ STM32_DMA_CR_DIR_P2M |
+ STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD |
+ STM32_DMA_CR_MINC | STM32_DMA_CR_TCIE |
+ STM32_DMA_CR_DMEIE | STM32_DMA_CR_TEIE;
+ nvicEnableVector(SDADC2_IRQn, STM32_ADC_SDADC2_IRQ_PRIORITY);
+#endif
+
+#if STM32_ADC_USE_SDADC3
+ /* Driver initialization.*/
+ adcObjectInit(&SDADCD3);
+#if STM32_ADC_USE_ADC
+ SDADCD3.adc = NULL;
+#endif
+ SDADCD3.sdadc = SDADC3;
+ SDADCD3.dmastp = STM32_DMA2_STREAM5;
+ SDADCD3.dmamode = STM32_DMA_CR_CHSEL(SDADC3_DMA_CHANNEL) |
+ STM32_DMA_CR_PL(STM32_ADC_SDADC3_DMA_PRIORITY) |
+ STM32_DMA_CR_DIR_P2M |
+ STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD |
+ STM32_DMA_CR_MINC | STM32_DMA_CR_TCIE |
+ STM32_DMA_CR_DMEIE | STM32_DMA_CR_TEIE;
+ nvicEnableVector(SDADC3_IRQn, STM32_ADC_SDADC3_IRQ_PRIORITY);
+#endif
+}
+
+/**
+ * @brief Configures and activates the ADC peripheral.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adc_lld_start(ADCDriver *adcp) {
+
+ if (adcp->config == NULL)
+ adcp->config = &adc_lld_default_config;
+
+ /* If in stopped state then enables the ADC and DMA clocks.*/
+ if (adcp->state == ADC_STOP) {
+#if STM32_ADC_USE_ADC1
+ if (&ADCD1 == adcp) {
+ bool b = dmaStreamAllocate(adcp->dmastp,
+ STM32_ADC_ADC1_DMA_IRQ_PRIORITY,
+ (stm32_dmaisr_t)adc_lld_serve_dma_interrupt,
+ (void *)adcp);
+ osalDbgAssert(!b, "stream already allocated");
+ dmaStreamSetPeripheral(adcp->dmastp, &ADC1->DR);
+ rccEnableADC1(FALSE);
+ }
+#endif /* STM32_ADC_USE_ADC1 */
+
+#if STM32_ADC_USE_SDADC1
+ if (&SDADCD1 == adcp) {
+ bool b = dmaStreamAllocate(adcp->dmastp,
+ STM32_ADC_SDADC1_DMA_IRQ_PRIORITY,
+ (stm32_dmaisr_t)adc_lld_serve_dma_interrupt,
+ (void *)adcp);
+ osalDbgAssert(!b, "stream already allocated");
+ dmaStreamSetPeripheral(adcp->dmastp, &SDADC1->JDATAR);
+ rccEnableSDADC1(FALSE);
+ PWR->CR |= PWR_CR_SDADC1EN;
+ adcp->sdadc->CR2 = 0;
+ adcp->sdadc->CR1 = (adcp->config->cr1 | SDADC_ENFORCED_CR1_FLAGS) &
+ ~SDADC_FORBIDDEN_CR1_FLAGS;
+ adcp->sdadc->CR2 = SDADC_CR2_ADON;
+ }
+#endif /* STM32_ADC_USE_SDADC1 */
+
+#if STM32_ADC_USE_SDADC2
+ if (&SDADCD2 == adcp) {
+ bool b = dmaStreamAllocate(adcp->dmastp,
+ STM32_ADC_SDADC2_DMA_IRQ_PRIORITY,
+ (stm32_dmaisr_t)adc_lld_serve_dma_interrupt,
+ (void *)adcp);
+ osalDbgAssert(!b, "stream already allocated");
+ dmaStreamSetPeripheral(adcp->dmastp, &SDADC2->JDATAR);
+ rccEnableSDADC2(FALSE);
+ PWR->CR |= PWR_CR_SDADC2EN;
+ adcp->sdadc->CR2 = 0;
+ adcp->sdadc->CR1 = (adcp->config->cr1 | SDADC_ENFORCED_CR1_FLAGS) &
+ ~SDADC_FORBIDDEN_CR1_FLAGS;
+ adcp->sdadc->CR2 = SDADC_CR2_ADON;
+ }
+#endif /* STM32_ADC_USE_SDADC2 */
+
+#if STM32_ADC_USE_SDADC3
+ if (&SDADCD3 == adcp) {
+ bool b = dmaStreamAllocate(adcp->dmastp,
+ STM32_ADC_SDADC3_DMA_IRQ_PRIORITY,
+ (stm32_dmaisr_t)adc_lld_serve_dma_interrupt,
+ (void *)adcp);
+ osalDbgAssert(!b, "stream already allocated");
+ dmaStreamSetPeripheral(adcp->dmastp, &SDADC3->JDATAR);
+ rccEnableSDADC3(FALSE);
+ PWR->CR |= PWR_CR_SDADC3EN;
+ adcp->sdadc->CR2 = 0;
+ adcp->sdadc->CR1 = (adcp->config->cr1 | SDADC_ENFORCED_CR1_FLAGS) &
+ ~SDADC_FORBIDDEN_CR1_FLAGS;
+ adcp->sdadc->CR2 = SDADC_CR2_ADON;
+ }
+#endif /* STM32_ADC_USE_SDADC3 */
+ }
+
+ adc_lld_reconfig(adcp);
+}
+
+/**
+ * @brief Deactivates the ADC peripheral.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adc_lld_stop(ADCDriver *adcp) {
+
+ /* If in ready state then disables the ADC clock.*/
+ if (adcp->state == ADC_READY) {
+ dmaStreamRelease(adcp->dmastp);
+
+#if STM32_ADC_USE_ADC1
+ if (&ADCD1 == adcp) {
+ adcp->adc->CR1 = 0;
+ adcp->adc->CR2 = 0;
+ rccDisableADC1(FALSE);
+ }
+#endif
+
+#if STM32_ADC_USE_SDADC1
+ if (&SDADCD1 == adcp) {
+ adcp->sdadc->CR1 = 0;
+ adcp->sdadc->CR2 = 0;
+ rccDisableSDADC1(FALSE);
+ PWR->CR &= ~PWR_CR_SDADC1EN;
+ }
+#endif
+
+#if STM32_ADC_USE_SDADC2
+ if (&SDADCD2 == adcp) {
+ adcp->sdadc->CR1 = 0;
+ adcp->sdadc->CR2 = 0;
+ rccDisableSDADC2(FALSE);
+ PWR->CR &= ~PWR_CR_SDADC2EN;
+ }
+#endif
+
+#if STM32_ADC_USE_SDADC3
+ if (&SDADCD3 == adcp) {
+ adcp->sdadc->CR1 = 0;
+ adcp->sdadc->CR2 = 0;
+ rccDisableSDADC3(FALSE);
+ PWR->CR &= ~PWR_CR_SDADC3EN;
+ }
+#endif
+ }
+}
+
+/**
+ * @brief Starts an ADC conversion.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adc_lld_start_conversion(ADCDriver *adcp) {
+ uint32_t mode;
+ const ADCConversionGroup* grpp = adcp->grpp;
+
+ /* DMA setup.*/
+ mode = adcp->dmamode;
+ if (grpp->circular) {
+ mode |= STM32_DMA_CR_CIRC;
+ if (adcp->depth > 1) {
+ /* If circular buffer depth > 1, then the half transfer interrupt
+ is enabled in order to allow streaming processing.*/
+ mode |= STM32_DMA_CR_HTIE;
+ }
+ }
+ dmaStreamSetMemory0(adcp->dmastp, adcp->samples);
+ dmaStreamSetTransactionSize(adcp->dmastp,
+ (uint32_t)grpp->num_channels *
+ (uint32_t)adcp->depth);
+ dmaStreamSetMode(adcp->dmastp, mode);
+ dmaStreamEnable(adcp->dmastp);
+
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ if (adcp->adc != NULL)
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_ADC
+ {
+ uint32_t cr2 = adcp->adc->CR2 & ADC_CR2_TSVREFE;
+ cr2 |= grpp->u.adc.cr2 | ADC_CR2_DMA | ADC_CR2_ADON;
+ if ((cr2 & ADC_CR2_SWSTART) != 0)
+ cr2 |= ADC_CR2_CONT;
+ adcp->adc->CR2 = cr2;
+
+ /* ADC setup.*/
+ adcp->adc->SR = 0;
+ adcp->adc->LTR = grpp->u.adc.ltr;
+ adcp->adc->HTR = grpp->u.adc.htr;
+ adcp->adc->SMPR1 = grpp->u.adc.smpr[0];
+ adcp->adc->SMPR2 = grpp->u.adc.smpr[1];
+ adcp->adc->SQR1 = grpp->u.adc.sqr[0] |
+ ADC_SQR1_NUM_CH(grpp->num_channels);
+ adcp->adc->SQR2 = grpp->u.adc.sqr[1];
+ adcp->adc->SQR3 = grpp->u.adc.sqr[2];
+
+ /* ADC conversion start, the start is performed using the method
+ specified in the CR2 configuration, usually ADC_CR2_SWSTART.*/
+ adcp->adc->CR1 = grpp->u.adc.cr1 | ADC_CR1_AWDIE | ADC_CR1_SCAN;
+ adcp->adc->CR2 = adcp->adc->CR2; /* Triggers the conversion start.*/
+ }
+#endif /* STM32_ADC_USE_ADC */
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ else if (adcp->sdadc != NULL)
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_SDADC
+ {
+ uint32_t cr2 = (grpp->u.sdadc.cr2 & ~SDADC_FORBIDDEN_CR2_FLAGS) |
+ SDADC_CR2_ADON;
+ if ((grpp->u.sdadc.cr2 & SDADC_CR2_JSWSTART) != 0)
+ cr2 |= SDADC_CR2_JCONT;
+
+ /* Entering initialization mode.*/
+ adcp->sdadc->CR1 |= SDADC_CR1_INIT;
+ while ((adcp->sdadc->ISR & SDADC_ISR_INITRDY) == 0)
+ ;
+
+ /* SDADC setup.*/
+ adcp->sdadc->JCHGR = grpp->u.sdadc.jchgr;
+ adcp->sdadc->CONFCHR1 = grpp->u.sdadc.confchr[0];
+ adcp->sdadc->CONFCHR2 = grpp->u.sdadc.confchr[1];
+
+ /* SDADC trigger modes, this write must be performed when
+ SDADC_CR1_INIT=1.*/
+ adcp->sdadc->CR2 = cr2;
+
+ /* Leaving initialization mode.*/
+ adcp->sdadc->CR1 &= ~SDADC_CR1_INIT;
+
+ /* Special case, if SDADC_CR2_JSWSTART is specified it has to be
+ written after SDADC_CR1_INIT has been set to zero. Just a write is
+ performed, any other bit is ingore if not in initialization mode.*/
+ adcp->sdadc->CR2 = cr2;
+ }
+#endif /* STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ else {
+ osalDbgAssert(FALSE, "invalid state");
+ }
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+}
+
+/**
+ * @brief Stops an ongoing conversion.
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ *
+ * @notapi
+ */
+void adc_lld_stop_conversion(ADCDriver *adcp) {
+
+ /* Disabling the associated DMA stream.*/
+ dmaStreamDisable(adcp->dmastp);
+
+ /* Stopping and restarting the whole ADC, apparently the only way to stop
+ a conversion.*/
+ adc_lld_reconfig(adcp);
+}
+
+/**
+ * @brief Calibrates an ADC unit.
+ * @note The calibration must be performed after calling @p adcStart().
+ * @note For SDADC units it is assumed that the field SDADC_CR2_CALIBCNT
+ * has been
+ *
+ * @param[in] adcp pointer to the @p ADCDriver object
+ *
+ * @api
+ */
+void adcSTM32Calibrate(ADCDriver *adcp) {
+
+ osalDbgAssert((adcp->state == ADC_READY) ||
+ (adcp->state == ADC_COMPLETE) ||
+ (adcp->state == ADC_ERROR),
+ "not ready");
+
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ if (adcp->adc != NULL)
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_ADC
+ {
+ /* Resetting calibration just to be safe.*/
+ ADC1->CR2 = ADC_CR2_ADON | ADC_CR2_RSTCAL;
+ while ((ADC1->CR2 & ADC_CR2_RSTCAL) != 0)
+ ;
+
+ /* Calibration.*/
+ ADC1->CR2 = ADC_CR2_ADON | ADC_CR2_CAL;
+ while ((ADC1->CR2 & ADC_CR2_CAL) != 0)
+ ;
+ }
+#endif /* STM32_ADC_USE_ADC */
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ else if (adcp->sdadc != NULL)
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_SDADC
+ {
+ /* Selecting a full calibration in three steps.*/
+ adcp->sdadc->CR2 = (adcp->sdadc->CR2 & ~SDADC_CR2_CALIBCNT) |
+ SDADC_CR2_CALIBCNT_1;
+
+ /* Calibration.*/
+ adcp->sdadc->CR2 |= SDADC_CR2_STARTCALIB;
+ while ((adcp->sdadc->ISR & SDADC_ISR_EOCALF) == 0)
+ ;
+
+ /* Clearing the EOCALF flag.*/
+ adcp->sdadc->CLRISR |= SDADC_ISR_CLREOCALF;
+ }
+#endif /* STM32_ADC_USE_SDADC */
+#if STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC
+ else {
+ osalDbgAssert(FALSE, "invalid state");
+ }
+#endif /* STM32_ADC_USE_ADC && STM32_ADC_USE_SDADC */
+}
+
+#if STM32_ADC_USE_ADC || defined(__DOXYGEN__)
+/**
+ * @brief Enables the TSVREFE bit.
+ * @details The TSVREFE bit is required in order to sample the internal
+ * temperature sensor and internal reference voltage.
+ * @note This is an STM32-only functionality.
+ *
+ * @api
+ */
+void adcSTM32EnableTSVREFE(void) {
+
+ ADC1->CR2 |= ADC_CR2_TSVREFE;
+}
+
+/**
+ * @brief Disables the TSVREFE bit.
+ * @details The TSVREFE bit is required in order to sample the internal
+ * temperature sensor and internal reference voltage.
+ * @note This is an STM32-only functionality.
+ *
+ * @api
+ */
+void adcSTM32DisableTSVREFE(void) {
+
+ ADC1->CR2 &= ~ADC_CR2_TSVREFE;
+}
+
+/**
+ * @brief Enables the VBATE bit.
+ * @details The VBATE bit is required in order to sample the VBAT channel.
+ * @note This is an STM32-only functionality.
+ *
+ * @api
+ */
+void adcSTM32EnableVBATE(void) {
+
+ SYSCFG->CFGR1 |= SYSCFG_CFGR1_VBAT;
+}
+
+/**
+ * @brief Disables the VBATE bit.
+ * @details The VBATE bit is required in order to sample the VBAT channel.
+ * @note This is an STM32-only functionality.
+ *
+ * @api
+ */
+void adcSTM32DisableVBATE(void) {
+
+ SYSCFG->CFGR1 &= ~SYSCFG_CFGR1_VBAT;
+}
+#endif /* STM32_ADC_USE_ADC */
+
+#endif /* HAL_USE_ADC */
+
+/** @} */
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