From 8ca210a4af9fd039e290cfcc309adde543999c1f Mon Sep 17 00:00:00 2001 From: gdisirio Date: Fri, 9 Aug 2013 08:24:22 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6108 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/platforms/STM32F1xx/adc_lld.c | 235 ----------------------------------- 1 file changed, 235 deletions(-) delete mode 100644 os/hal/platforms/STM32F1xx/adc_lld.c (limited to 'os/hal/platforms/STM32F1xx/adc_lld.c') diff --git a/os/hal/platforms/STM32F1xx/adc_lld.c b/os/hal/platforms/STM32F1xx/adc_lld.c deleted file mode 100644 index 9e9bbfb7d..000000000 --- a/os/hal/platforms/STM32F1xx/adc_lld.c +++ /dev/null @@ -1,235 +0,0 @@ -/* - ChibiOS/RT - Copyright (C) 2006-2013 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 STM32F1xx/adc_lld.c - * @brief STM32F1xx ADC subsystem low level driver source. - * - * @addtogroup ADC - * @{ - */ - -#include "ch.h" -#include "hal.h" - -#if HAL_USE_ADC || defined(__DOXYGEN__) - -/*===========================================================================*/ -/* Driver local definitions. */ -/*===========================================================================*/ - -/*===========================================================================*/ -/* Driver exported variables. */ -/*===========================================================================*/ - -/** @brief ADC1 driver identifier.*/ -#if STM32_ADC_USE_ADC1 || defined(__DOXYGEN__) -ADCDriver ADCD1; -#endif - -/*===========================================================================*/ -/* Driver local variables and types. */ -/*===========================================================================*/ - -/*===========================================================================*/ -/* Driver local functions. */ -/*===========================================================================*/ - -/** - * @brief Shared ADC DMA ISR service routine. - * - * @param[in] adcp pointer to the @p ADCDriver object - * @param[in] flags pre-shifted content of the ISR register - */ -static void adc_lld_serve_rx_interrupt(ADCDriver *adcp, uint32_t flags) { - - /* DMA errors handling.*/ - if ((flags & STM32_DMA_ISR_TEIF) != 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 { - if ((flags & STM32_DMA_ISR_HTIF) != 0) { - /* Half transfer processing.*/ - _adc_isr_half_code(adcp); - } - if ((flags & STM32_DMA_ISR_TCIF) != 0) { - /* Transfer complete processing.*/ - _adc_isr_full_code(adcp); - } - } -} - -/*===========================================================================*/ -/* Driver interrupt handlers. */ -/*===========================================================================*/ - -/*===========================================================================*/ -/* 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; - ADCD1.dmastp = STM32_DMA1_STREAM1; - ADCD1.dmamode = STM32_DMA_CR_PL(STM32_ADC_ADC1_DMA_PRIORITY) | - STM32_DMA_CR_MSIZE_HWORD | STM32_DMA_CR_PSIZE_HWORD | - STM32_DMA_CR_MINC | STM32_DMA_CR_TCIE | - STM32_DMA_CR_TEIE; - - /* Temporary activation.*/ - rccEnableADC1(FALSE); - ADC1->CR1 = 0; - ADC1->CR2 = ADC_CR2_ADON; - - /* Reset 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) - ; - - /* Return the ADC in low power mode.*/ - ADC1->CR2 = 0; - rccDisableADC1(FALSE); -#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 in stopped state then enables the ADC and DMA clocks.*/ - if (adcp->state == ADC_STOP) { -#if STM32_ADC_USE_ADC1 - if (&ADCD1 == adcp) { - bool_t b; - b = dmaStreamAllocate(adcp->dmastp, - STM32_ADC_ADC1_IRQ_PRIORITY, - (stm32_dmaisr_t)adc_lld_serve_rx_interrupt, - (void *)adcp); - chDbgAssert(!b, "adc_lld_start(), #1", "stream already allocated"); - dmaStreamSetPeripheral(adcp->dmastp, &ADC1->DR); - rccEnableADC1(FALSE); - } -#endif - - /* ADC setup, the calibration procedure has already been performed - during initialization.*/ - adcp->adc->CR1 = 0; - adcp->adc->CR2 = 0; - } -} - -/** - * @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) { -#if STM32_ADC_USE_ADC1 - if (&ADCD1 == adcp) { - ADC1->CR1 = 0; - ADC1->CR2 = 0; - dmaStreamRelease(adcp->dmastp); - rccDisableADC1(FALSE); - } -#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, n, cr2; - const ADCConversionGroup *grpp = adcp->grpp; - - /* DMA setup.*/ - mode = adcp->dmamode; - if (grpp->circular) - mode |= STM32_DMA_CR_CIRC; - if (adcp->depth > 1) { - /* If the buffer depth is greater than one then the half transfer interrupt - interrupt is enabled in order to allows streaming processing.*/ - mode |= STM32_DMA_CR_HTIE; - n = (uint32_t)grpp->num_channels * (uint32_t)adcp->depth; - } - else - n = (uint32_t)grpp->num_channels; - dmaStreamSetMemory0(adcp->dmastp, adcp->samples); - dmaStreamSetTransactionSize(adcp->dmastp, n); - dmaStreamSetMode(adcp->dmastp, mode); - dmaStreamEnable(adcp->dmastp); - - /* ADC setup.*/ - adcp->adc->CR1 = grpp->cr1 | ADC_CR1_SCAN; - cr2 = grpp->cr2 | ADC_CR2_DMA | ADC_CR2_ADON; - if ((cr2 & (ADC_CR2_EXTTRIG | ADC_CR2_JEXTTRIG)) == 0) - cr2 |= ADC_CR2_CONT; - adcp->adc->CR2 = grpp->cr2 | cr2; - adcp->adc->SMPR1 = grpp->smpr1; - adcp->adc->SMPR2 = grpp->smpr2; - adcp->adc->SQR1 = grpp->sqr1; - adcp->adc->SQR2 = grpp->sqr2; - adcp->adc->SQR3 = grpp->sqr3; - - /* ADC start by writing ADC_CR2_ADON a second time.*/ - adcp->adc->CR2 = cr2; -} - -/** - * @brief Stops an ongoing conversion. - * - * @param[in] adcp pointer to the @p ADCDriver object - * - * @notapi - */ -void adc_lld_stop_conversion(ADCDriver *adcp) { - - dmaStreamDisable(adcp->dmastp); - adcp->adc->CR2 = 0; -} - -#endif /* HAL_USE_ADC */ - -/** @} */ -- cgit v1.2.3