110 lines
4.9 KiB
C
110 lines
4.9 KiB
C
#ifndef __SWM341_ADC_H__
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#define __SWM341_ADC_H__
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typedef struct {
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uint8_t clk_src; //ADC转换时钟源：ADC_CLKSRC_HRC、ADC_CLKSRC_XTAL、...
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uint8_t samplAvg; //采样取平均，触发启动ADC转换后，ADC在一个通道上连续采样、转换多次，并将它们的平均值作为该通道转换结果
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uint8_t EOC_IEn; //EOC中断使能， 可针对每个序列设置，其有效值为ADC_SEQ0、ADC_SEQ1、ADC_SEQ2、ADC_SEQ3及其组合（即“按位或”运算）
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uint8_t HalfIEn; //FIFO半满中断使能，可针对每个序列设置，其有效值为ADC_SEQ0、ADC_SEQ1、ADC_SEQ2、ADC_SEQ3及其组合（即“按位或”运算）
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} ADC_InitStructure;
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typedef struct {
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uint16_t channels; //ADC序列转换通道选中，ADC_CH0、ADC_CH1、... ... 、ADC_CH7及其组合（即“按位或”运算）
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uint8_t trig_src; //ADC序列触发方式：ADC_TRIGGER_SW、ADC_TRIGGER_TIMER2、ADC_TRIGGER_TIMER3、... ...
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uint16_t conv_cnt; //ADC序列转换次数，可取值1--256
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uint8_t samp_tim; //ADC序列采样时间，可取值ADC_SAMPLE_1CLOCK、ADC_SAMPLE_2CLOCK、ADC_SAMPLE_4CLOCK、ADC_SAMPLE_8CLOCK
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} ADC_SEQ_InitStructure;
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typedef struct {
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uint16_t UpperLimit; //比较上限值
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uint16_t UpperLimitIEn; //ADC转换结果大于UpperLimit中断使能
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uint16_t LowerLimit; //比较下限值
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uint16_t LowerLimitIEn; //ADC转换结果小于LowerLimit中断使能
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} ADC_CMP_InitStructure;
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#define ADC_CH0 0x001
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#define ADC_CH1 0x002
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#define ADC_CH2 0x004
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#define ADC_CH3 0x008
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#define ADC_CH4 0x010
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#define ADC_CH5 0x020
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#define ADC_CH6 0x040
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#define ADC_CH7 0x080
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#define ADC_CH8 0x100
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#define ADC_CH9 0x200
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#define ADC_CH10 0x400
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#define ADC_CH11 0x800
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#define ADC_SEQ0 0x1
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#define ADC_SEQ1 0x2
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#define ADC_SEQ2 0x4
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#define ADC_SEQ3 0x8
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#define ADC_CLKSRC_HRC ((0 << 2) | 0)
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#define ADC_CLKSRC_XTAL ((0 << 2) | 1)
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#define ADC_CLKSRC_PLL ((0 << 2) | 2)
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#define ADC_CLKSRC_HRC_DIV4 ((2 << 2) | 0)
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#define ADC_CLKSRC_XTAL_DIV4 ((2 << 2) | 1)
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#define ADC_CLKSRC_PLL_DIV4 ((2 << 2) | 2)
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#define ADC_CLKSRC_HRC_DIV8 ((3 << 2) | 0)
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#define ADC_CLKSRC_XTAL_DIV8 ((3 << 2) | 1)
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#define ADC_CLKSRC_PLL_DIV8 ((3 << 2) | 2)
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#define ADC_AVG_SAMPLE1 0
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#define ADC_AVG_SAMPLE2 1 //一次启动连续采样、转换2次，并计算两次结果的平均值作为转换结果
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#define ADC_AVG_SAMPLE4 2
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#define ADC_AVG_SAMPLE8 3
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#define ADC_TRIGGER_NO 0
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#define ADC_TRIGGER_SW 1 //软件启动
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#define ADC_TRIGGER_TIMER2 2
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#define ADC_TRIGGER_TIMER3 3
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#define ADC_TRIGGER_EXTRIG0 4
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#define ADC_TRIGGER_EXTRIG1 5
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#define ADC_TRIGGER_PWM0 0x10
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#define ADC_TRIGGER_PWM1 0x11
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#define ADC_TRIGGER_PWM2 0x12
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#define ADC_TRIGGER_PWM3 0x13
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#define ADC_TRIGGER_PWM4 0x14
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#define ADC_SAMPLE_1CLOCK 0
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#define ADC_SAMPLE_2CLOCK 1
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#define ADC_SAMPLE_4CLOCK 2
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#define ADC_SAMPLE_8CLOCK 3
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#define ADC_SAMPLE_16CLOCK 4
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#define ADC_SAMPLE_32CLOCK 5
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#define ADC_SAMPLE_64CLOCK 6
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#define ADC_SAMPLE_128CLOCK 7
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/* Interrupt Type */
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#define ADC_IT_EOC (1 << 0) //End Of Conversion
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#define ADC_IT_FIFO_OVF (1 << 1) //FIFO Overflow
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#define ADC_IT_FIFO_HALF (1 << 2) //FIFO Half Full
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#define ADC_IT_FIFO_FULL (1 << 3) //FIFO Full
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#define ADC_IT_CMP_MAX (1 << 4) //转换结果大于COMP.MAX
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#define ADC_IT_CMP_MIN (1 << 5) //转换结果小于COMP.MIN
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void ADC_Init(ADC_TypeDef * ADCx, ADC_InitStructure * initStruct); //ADC模数转换器初始化
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void ADC_SEQ_Init(ADC_TypeDef * ADCx, uint32_t seq, ADC_SEQ_InitStructure * initStruct); //ADC序列初始化
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void ADC_CMP_Init(ADC_TypeDef * ADCx, uint32_t seq, ADC_CMP_InitStructure * initStruct); //ADC比较功能初始化
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void ADC_Open(ADC_TypeDef * ADCx); //ADC开启，可以软件启动、或硬件触发ADC转换
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void ADC_Calibrate(ADC_TypeDef * ADCx); //ADC校准
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void ADC_Close(ADC_TypeDef * ADCx); //ADC关闭，无法软件启动、或硬件触发ADC转换
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void ADC_Start(ADC_TypeDef * ADCx, uint32_t seq); //启动指定ADC，开始模数转换
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void ADC_Stop(ADC_TypeDef * ADCx, uint32_t seq); //关闭指定ADC，停止模数转换
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uint32_t ADC_Read(ADC_TypeDef * ADCx, uint32_t seq, uint32_t *chn); //从指定通道读取转换结果
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uint32_t ADC_DataAvailable(ADC_TypeDef * ADCx, uint32_t seq); //指定序列是否有数据可读取
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void ADC_INTEn(ADC_TypeDef * ADCx, uint32_t seq, uint32_t it);
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void ADC_INTEn(ADC_TypeDef * ADCx, uint32_t seq, uint32_t it);
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void ADC_INTClr(ADC_TypeDef * ADCx, uint32_t seq, uint32_t it);
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uint32_t ADC_INTStat(ADC_TypeDef * ADCx, uint32_t seq, uint32_t it);
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#endif //__SWM341_ADC_H__
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