73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/***************************************************************************//**
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* @file drv_adc.h
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* @brief ADC driver of RT-Thread RTOS for EFM32
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* COPYRIGHT (C) 2012, RT-Thread Development Team
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* @author onelife
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* @version 1.0
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*******************************************************************************
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* @section License
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* The license and distribution terms for this file may be found in the file
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* LICENSE in this distribution or at http://www.rt-thread.org/license/LICENSE
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*******************************************************************************
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* @section Change Logs
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* Date Author Notes
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* 2011-02-21 onelife Initial creation for EFM32
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* 2011-07-14 onelife Add multiple channels support for scan mode
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******************************************************************************/
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#ifndef __DRV_ADC_H__
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#define __DRV_ADC_H__
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/* Includes ------------------------------------------------------------------*/
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/* Exported types ------------------------------------------------------------*/
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struct efm32_adc_device_t
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{
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ADC_TypeDef *adc_device;
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rt_uint8_t mode;
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rt_uint8_t singleCount;
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rt_uint8_t singleDmaChannel;
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rt_uint8_t scanCount;
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rt_uint8_t scanDmaChannel;
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};
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struct efm32_adc_control_single_t
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{
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rt_uint8_t count;
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rt_uint8_t dmaChannel;
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ADC_InitSingle_TypeDef *init;
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};
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struct efm32_adc_control_scan_t
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{
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rt_uint8_t count;
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rt_uint8_t dmaChannel;
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ADC_InitScan_TypeDef *init;
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};
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struct efm32_adc_control_t
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{
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rt_uint8_t mode;
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struct efm32_adc_control_scan_t scan;
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struct efm32_adc_control_single_t single;
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};
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struct efm32_adc_result_t
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{
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rt_uint8_t mode;
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void *buffer;
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};
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/* Exported constants --------------------------------------------------------*/
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/* Exported macro ------------------------------------------------------------*/
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#define ADC_MODE_SINGLE (0x01)
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#define ADC_MODE_SCAN (0x02)
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#define ADC_MODE_TAILGATE (0x04)
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#define ADC_OP_SINGLE_REPEAT (0x10)
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#define ADC_OP_SCAN_REPEAT (0x20)
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#define ADC_MASK_MODE (0x0f)
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#define ADC_MASK_OP (0xf0)
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/* Exported functions ------------------------------------------------------- */
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void rt_hw_adc_init(void);
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#endif /*__DRV_ADC_H__ */
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