/**+
−
  ******************************************************************************+
−
  * @file    adc.c +
−
  * @author  heinrichs weikamp gmbh+
−
  * @version V0.0.1+
−
  * @date    11-Dec-2014+
−
  * @brief   ADC for ambient light sensor+
−
  *           +
−
  @verbatim                 +
−
  ============================================================================== +
−
                        ##### How to use #####+
−
  ============================================================================== +
−
  @endverbatim+
−
  ******************************************************************************+
−
  * @attention+
−
  *+
−
  * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>+
−
  *+
−
  ******************************************************************************+
−
  */ +
−
+
−
/* Includes ------------------------------------------------------------------*/+
−
+
−
#include "stm32f4xx_hal.h"+
−
#include "adc.h"+
−
+
−
/* Exported variables --------------------------------------------------------*/+
−
/* Private variables ---------------------------------------------------------*/+
−
	ADC_HandleTypeDef    AdcHandle;+
−
__IO uint16_t uhADCxConvertedValue = 0;+
−
+
−
/* Private types -------------------------------------------------------------*/+
−
#define ADCx                            ADC1+
−
#define ADCx_CLK_ENABLE()               __ADC1_CLK_ENABLE();+
−
#define ADCx_CHANNEL_GPIO_CLK_ENABLE()  __GPIOF_CLK_ENABLE()+
−
     +
−
#define ADCx_FORCE_RESET()              __ADC_FORCE_RESET()+
−
#define ADCx_RELEASE_RESET()            __ADC_RELEASE_RESET()+
−
+
−
/* Definition for ADCx Channel Pin */+
−
#define ADCx_GPIO_PIN                		GPIO_PIN_0+
−
#define ADCx_GPIO_PORT         					GPIOB +
−
#define ADCx_GPIO_CLK_ENABLE()          __GPIOB_CLK_ENABLE()+
−
#define ADCx_GPIO_CLK_DISABLE()         __GPIOB_CLK_DISABLE()+
−
+
−
/* Definition for ADCx's Channel */+
−
#define ADCx_CHANNEL                    ADC_CHANNEL_8+
−
+
−
/* Definition for ADCx's NVIC */+
−
//#define ADCx_IRQn                      ADC_IRQn+
−
+
−
/* Private function prototypes -----------------------------------------------*/+
−
void ADC_Start_single_IT_Conversion(void);+
−
+
−
/* Exported functions --------------------------------------------------------*/+
−
+
−
uint16_t get_ambient_light_level(void)+
−
{+
−
	#ifdef OSTC_ON_DISCOVERY_HARDWARE+
−
		return 800;+
−
	#endif+
−
	+
−
	return uhADCxConvertedValue;+
−
}+
−
+
−
+
−
static void ADCx_MspInit(ADC_HandleTypeDef *hadc)+
−
{+
−
	#ifdef OSTC_ON_DISCOVERY_HARDWARE+
−
		return;+
−
	#endif+
−
	+
−
  GPIO_InitTypeDef  GPIO_InitStruct;+
−
+
−
  ADCx_GPIO_CLK_ENABLE();+
−
  +
−
  GPIO_InitStruct.Pin = ADCx_GPIO_PIN ;+
−
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;+
−
  GPIO_InitStruct.Pull = GPIO_NOPULL;+
−
  HAL_GPIO_Init(ADCx_GPIO_PORT, &GPIO_InitStruct);+
−
+
−
  ADCx_CLK_ENABLE(); +
−
+
−
//  HAL_NVIC_SetPriority(ADCx_IRQn, 2, 0);+
−
//  HAL_NVIC_EnableIRQ(ADCx_IRQn);+
−
}+
−
+
−
+
−
void ADCx_DeInit(void)+
−
{+
−
//	HAL_ADC_Stop_IT(&AdcHandle);+
−
  HAL_ADC_DeInit(&AdcHandle);+
−
}+
−
+
−
+
−
void ADCx_Init(void)+
−
{+
−
	#ifdef OSTC_ON_DISCOVERY_HARDWARE+
−
		return;+
−
	#endif+
−
	+
−
	ADC_ChannelConfTypeDef sConfig;+
−
	+
−
  AdcHandle.Instance          = ADCx;+
−
  +
−
  AdcHandle.Init.ClockPrescaler				 = ADC_CLOCKPRESCALER_PCLK_DIV4;+
−
	AdcHandle.Init.Resolution            = ADC_RESOLUTION12b;+
−
	AdcHandle.Init.DataAlign             = ADC_DATAALIGN_RIGHT;+
−
	AdcHandle.Init.ContinuousConvMode    = DISABLE;+
−
	AdcHandle.Init.DiscontinuousConvMode = DISABLE;+
−
	AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_NONE;+
−
	AdcHandle.Init.EOCSelection          = EOC_SINGLE_CONV;+
−
	AdcHandle.Init.NbrOfConversion       = 1;+
−
	AdcHandle.Init.DMAContinuousRequests = DISABLE;    +
−
      +
−
	ADCx_MspInit(&AdcHandle);+
−
	HAL_ADC_Init(&AdcHandle);+
−
+
−
	sConfig.Channel = ADCx_CHANNEL;+
−
  sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;+
−
  sConfig.Rank = 1;+
−
  sConfig.Offset = 0;+
−
+
−
	HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);+
−
	+
−
//	ADC_Start_single_IT_Conversion();+
−
}+
−
+
−
+
−
uint32_t adc_debug_status = 0;+
−
+
−
void adc_ambient_light_sensor_get_data(void)+
−
{+
−
	#ifdef OSTC_ON_DISCOVERY_HARDWARE+
−
		return;+
−
	#endif+
−
	+
−
	HAL_ADC_Start(&AdcHandle);+
−
  HAL_ADC_PollForConversion(&AdcHandle, 10);+
−
	adc_debug_status = HAL_ADC_GetState(&AdcHandle);+
−
  if(adc_debug_status == HAL_ADC_STATE_EOC_REG + HAL_ADC_STATE_READY) // new HAL_ADC_STATE_READY 160613+
−
//  if(HAL_ADC_GetState(&AdcHandle) == HAL_ADC_STATE_EOC_REG)+
−
  uhADCxConvertedValue = HAL_ADC_GetValue(&AdcHandle);+
−
	HAL_ADC_Stop(&AdcHandle);+
−
}+
−
+
−
+
−
/* Private functions ---------------------------------------------------------*/+
−
/*+
−
void ADC_Start_single_IT_Conversion(void)+
−
{+
−
	HAL_ADC_Start_IT(&AdcHandle);+
−
}+
−
+
−
+
−
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)+
−
{+
−
	extern void copyAmbientLightData(void);+
−
+
−
  uhADCxConvertedValue = HAL_ADC_GetValue(AdcHandle);+
−
	copyAmbientLightData();+
−
	ADC_Start_single_IT_Conversion();+
−
}+
−
*/+
−
+
−
/************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/+
−