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网站建设的报价为什么不同,阜平网站seo,logo做ppt模板下载网站,石家庄百度推广开户MM32F3273G8P火龙果开发板MindSDK开发教程12 -获取msa311加速器的敲击事件 1、功能描述 msa311可以识别单击、双击事件，类似手机上的点击返回，双击截屏功能。 单击，双击都能产生中断事件。 中断事件产生后，从对应的状态寄存器读…

MM32F3273G8P火龙果开发板MindSDK开发教程12 -获取msa311加速器的敲击事件

1、功能描述

msa311可以识别单击、双击事件，类似手机上的点击返回，双击截屏功能。
单击，双击都能产生中断事件。
中断事件产生后，从对应的状态寄存器读取是双击还是单击。
中断需要打开映射。
单双击可设置阈值。
对应寄存器的描述如下：
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在这里插入图片描述
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在这里插入图片描述

2、设置相关寄存器

a、设置tap_quite
b、设置tap_shock
c、设置tap_duration
在这里插入图片描述
d、设置tap_threshole
e、设置中断映射
f、设置中断使能。

对应代码：

    #if ENABLE_TAP_DETECT == 1Msa311_SetTapQuiteParam(MSA311_TAPQUITE_30_MS);Msa311_GetTapQuiteParam(&tapQuite);printf("Msa311_getTapQuiteParam == %s\r\n",tapQuite == MSA311_TAPQUITE_30_MS ? "MSA311_TAPQUITE_30_MS" : "MSA311_TAPQUITE_20_MS");Msa311_SetTapShockParam(MSA311_TAPSHOCK_50_MS);Msa311_GetTapShockParam(&tapShock);printf("Msa311_GetTapShockParam == %s\r\n",tapShock == MSA311_TAPSHOCK_50_MS ? "MSA311_TAPSHOCK_50_MS" : "MSA311_TAPSHOCK_70_MS");Msa311_SetTapDurationParam(MSA311_TAPDUR_250_MS);Msa311_GetTapDurationParam(&tapDuration);printf("Msa311_GetTapDurationParam == 0x%02x\r\n",tapDuration);Msa311_ThresholdConvertToRegister(1.0f,&reg);Msa311_SetTapThresholdParam(reg);Msa311_GetTapThresholdParam(&threshold);printf("Msa311_GetTapThresholdParam  == 0x%02x\r\n",threshold);//使能S_TAP D_TAP IntMsa311_SetInterruptMap0(MSA311_INTERRUPT_D_TAP,MSA311_BOOL_TRUE);Msa311_SetInterruptMap0(MSA311_INTERRUPT_S_TAP,MSA311_BOOL_TRUE);Msa311_GetInterruptMap0(MSA311_INTERRUPT_D_TAP,&enable);printf("Msa311_GetInterruptMap0 MSA311_INTERRUPT_D_TAP %s\r\n",enable==MSA311_BOOL_TRUE ? "enable" : "disable");Msa311_GetInterruptMap0(MSA311_INTERRUPT_S_TAP,&enable);printf("Msa311_GetInterruptMap0 MSA311_INTERRUPT_S_TAP %s\r\n",enable==MSA311_BOOL_TRUE ? "enable" : "disable");Msa311_SetInterrupt0Enable(MSA311_INTERRUPT_D_TAP_EN,MSA311_BOOL_TRUE);Msa311_GetInterrupt0Enable(MSA311_INTERRUPT_D_TAP_EN,&enable);printf("Msa311_GetInterrupt0Enable MSA311_INTERRUPT_D_TAP %s\r\n",enable==MSA311_BOOL_TRUE ? "enable" : "disable");Msa311_SetInterrupt0Enable(MSA311_INTERRUPT_S_TAP_EN,MSA311_BOOL_TRUE);Msa311_GetInterrupt0Enable(MSA311_INTERRUPT_S_TAP_EN,&enable);printf("Msa311_GetInterrupt0Enable MSA311_INTERRUPT_S_TAP_EN %s\r\n",enable==MSA311_BOOL_TRUE ? "enable" : "disable");#endif

每个功能函数：

static bool Msa311_SetTapQuiteParam(msa311_tapquite_t tapQuite)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPDUR,&r_data);if (bRet == false){perror("Msa311_SetTapQuiteParam read error\n");return false;}w_data = ((r_data & MSA311_TAP_QUITE_MASK) | tapQuite);bRet = Msa311_WirteReg(MSA311_REG_TAPDUR,w_data);if (bRet == false){perror("Msa311_SetTapQuiteParam write error\n");return false;}return bRet;
}static bool Msa311_GetTapQuiteParam(msa311_tapquite_t *tapQuite)
{    uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPDUR,&r_data);if (bRet == false){perror("Msa311_GetRange read error\n");return false;}*tapQuite = (r_data & ~(MSA311_TAP_QUITE_MASK));return bRet;
}static bool Msa311_SetTapShockParam(msa311_tapshock_t tapShock)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPDUR,&r_data);if (bRet == false){perror("Msa311_SetTapShockParam read error\n");return false;}w_data = ((r_data & MSA311_TAP_SHOCK_MASK) | tapShock);bRet = Msa311_WirteReg(MSA311_REG_TAPDUR,w_data);if (bRet == false){perror("Msa311_SetTapShockParam write error\n");return false;}return bRet;
}static bool Msa311_GetTapShockParam(msa311_tapshock_t *tapShock)
{    uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPDUR,&r_data);if (bRet == false){perror("Msa311_GetTapShockParam read error\n");return false;}*tapShock = (r_data & ~(MSA311_TAP_SHOCK_MASK));return bRet;
}static bool Msa311_SetTapDurationParam(msa311_tapduration_t tapDuration)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPDUR,&r_data);if (bRet == false){perror("Msa311_SetTapDurationParam read error\n");return false;}w_data = ((r_data & MSA311_TAP_DUR_MASK) | tapDuration);bRet = Msa311_WirteReg(MSA311_REG_TAPDUR,w_data);if (bRet == false){perror("Msa311_SetTapDurationParam write error\n");return false;}return bRet;
}static bool Msa311_GetTapDurationParam(msa311_tapduration_t *tapDuration)
{    uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPDUR,&r_data);if (bRet == false){perror("Msa311_GetTapDurationParam read error\n");return false;}*tapDuration = (r_data & ~(MSA311_TAP_DUR_MASK));return bRet;
}static uint8_t Msa311_ThresholdConvertToRegister(float g, uint8_t *reg)
{msa311_range_t range;Msa311_GetRange(&range);switch (range){case MSA311_RANGE_2_G/* constant-expression */:/* code */*reg = (int8_t)(g / 0.0625f);    break;case MSA311_RANGE_4_G/* constant-expression */:/* code */*reg = (int8_t)(g / 0.125f);    break;case MSA311_RANGE_8_G/* constant-expression */:/* code */*reg = (int8_t)(g / 0.250f);    break;case MSA311_RANGE_16_G/* constant-expression */:/* code */*reg = (int8_t)(g / 0.5f);    break;        default:printf("Msa311_ThresholdConvertToRegister error\r\n");break;}return 0;                                                                             
}static uint8_t Msa311_ThresholdConvertToData(uint8_t reg, float *g)
{msa311_range_t range;Msa311_GetRange(&range);switch (range){case MSA311_RANGE_2_G/* constant-expression */:/* code */*g = (float)(reg) * 0.0625f;   break;case MSA311_RANGE_4_G/* constant-expression */:/* code */*g = (float)(reg) * 0.125f;     break;case MSA311_RANGE_8_G/* constant-expression */:/* code */*g = (float)(reg) * 0.250f;     break;case MSA311_RANGE_16_G/* constant-expression */:/* code */*g = (float)(reg) * 0.500f;    break;        default:printf("Msa311_ThresholdConvertToData error\r\n");break;}*g = (float)(reg) * 0.0039f;    return 0;
}static bool Msa311_SetTapThresholdParam(uint8_t threshold)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;w_data = threshold;bRet = Msa311_WirteReg(MSA311_REG_TAPTH,w_data);if (bRet == false){perror("Msa311_SetTapThresholdParam write error\n");return false;}return bRet;
}static bool Msa311_GetTapThresholdParam(uint8_t *threshold)
{    uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_TAPTH,&r_data);if (bRet == false){perror("Msa311_SetTapThresholdParam read error\n");return false;}*threshold = r_data;return bRet;
}static bool Msa311_SetInterruptMap0(msa311_interrupt_map0_t type, msa311_bool_t enable)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_INTMAP0,&r_data);if (bRet == false){perror("Msa311_SetInterruptMap0 read error\n");return false;}r_data &= ~(1 << type);                                                                   /* clear type */r_data |= enable << type; bRet = Msa311_WirteReg(MSA311_REG_INTMAP0,r_data);if (bRet == false){perror("Msa311_SetInterruptMap0 write error\n");return false;}return bRet;
}static bool Msa311_GetInterruptMap0(msa311_interrupt_map0_t type, msa311_bool_t *enable)
{uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_INTMAP0,&r_data);if (bRet == false){perror("Msa311_SetInterruptMap0 read error\n");return false;}r_data &= (1 << type);                                                                    /* clear config */*enable = (msa311_bool_t)(r_data >> type);   return 0;
}static bool Msa311_SetInterrupt0Enable(msa311_interrupt_sw0_t type, msa311_bool_t enable)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_INTSET0,&r_data);if (bRet == false){perror("Msa311_SetInterrupt0Enable read error\n");return false;}r_data &= ~(1 << type);                                                                   /* clear type */r_data |= enable << type; bRet = Msa311_WirteReg(MSA311_REG_INTSET0,r_data);if (bRet == false){perror("Msa311_SetInterrupt0Enable write error\n");return false;}return bRet;
}static bool Msa311_GetInterrupt0Enable(msa311_interrupt_sw0_t type, msa311_bool_t *enable)
{uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_INTMAP0,&r_data);if (bRet == false){perror("Msa311_GetInterrupt0Enable read error\n");return false;}r_data &= (1 << type);                                                                    /* clear config */*enable = (msa311_bool_t)(r_data >> type);   return 0;
}static bool Msa311_SetInterrupt1Enable(msa311_interrupt_sw1_t type, msa311_bool_t enable)
{uint8_t r_data;uint8_t w_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_INTSET1,&r_data);if (bRet == false){perror("Msa311_SetInterrupt1Enable read error\n");return false;}r_data &= ~(1 << type);                                                                   /* clear type */r_data |= enable << type; bRet = Msa311_WirteReg(MSA311_REG_INTSET1,r_data);if (bRet == false){perror("Msa311_SetInterrupt1Enable write error\n");return false;}return bRet;
}static bool Msa311_GetInterrupt1Enable(msa311_interrupt_sw1_t type, msa311_bool_t *enable)
{uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_INTMAP1,&r_data);if (bRet == false){perror("Msa311_GetInterrupt1Enable read error\n");return false;}r_data &= (1 << type);                                                                    /* clear config */*enable = (msa311_bool_t)(r_data >> type);   return 0;
}static bool Msa311_GetInterruptState(msa311_int_state_t state, msa311_bool_t *enable)
{uint8_t r_data;bool bRet = 0;bRet = Msa311_ReadReg(MSA311_REG_MOTIONINT,&r_data);if (bRet == false){perror("Msa311_GetInterrupt1Enable read error\n");return false;}r_data &= (1 << state);                                                                    /* clear config */*enable = (msa311_bool_t)(r_data >> state);   return 0;
}

对应头文件：

#ifndef __MSA311_H__
#define __MSA311_H__#define MSA311_I2CADDR_DEFAULT_7 (0x62) ///< Fixed I2C address
#define MSA311_I2CADDR_DEFAULT_8 (0xC4) ///< Fixed I2C address/*=========================================================================*/#define MSA311_REG_RESET                    0x00    ///< Register soft reset
#define MSA311_REG_PARTID                   0x01    ///< Register that contains the part ID
#define MSA311_REG_OUT_X_L                  0x02    ///< Register address for X axis lower byte
#define MSA311_REG_OUT_X_H                  0x03    ///< Register address for X axis higher byte
#define MSA311_REG_OUT_Y_L                  0x04    ///< Register address for Y axis lower byte
#define MSA311_REG_OUT_Y_H                  0x05    ///< Register address for Y axis higher byte
#define MSA311_REG_OUT_Z_L                  0x06    ///< Register address for Z axis lower byte
#define MSA311_REG_OUT_Z_H                  0x07    ///< Register address for Z axis higher byte
#define MSA311_REG_MOTIONINT                0x09    ///< Register address for motion interrupt
#define MSA311_REG_DATAINT                  0x0A    ///< Register address for data interrupt
#define MSA311_REG_CLICKSTATUS              0x0B    ///< Register address for click/doubleclick status
#define MSA311_REG_ORIENTATION_STATUS       0x0C    ///< Register address for orientation status
#define MSA311_REG_RESRANGE                 0x0F    ///< Register address for resolution range
#define MSA311_REG_ODR                      0x10    ///< Register address for data rate setting
#define MSA311_REG_POWERMODE                0x11    ///< Register address for power mode setting
#define MSA311_REG_INTSET0                  0x16    ///< Register address for interrupt setting #0
#define MSA311_REG_INTSET1                  0x17    ///< Register address for interrupt setting #1
#define MSA311_REG_INTMAP0                  0x19    ///< Register address for interrupt map #0
#define MSA311_REG_INTMAP1                  0x1A    ///< Register address for interrupt map #1
#define MSA311_REG_TAPDUR                   0x2A    ///< Register address for tap duration
#define MSA311_REG_TAPTH                    0x2B    ///< Register address for tap threshold#define MSA311_REG_OFFSET_X                 0x38
#define MSA311_REG_OFFSET_Y                 0x39
#define MSA311_REG_OFFSET_Z                 0x3A#define MSA311_POWER_MODE_MSAK				0x3F
#define MSA311_POWER_MODE_SHIFT				0x05u/** The accelerometer power mode */
typedef enum {MSA311_NORMALMODE 	= 0x00,   	    ///< Normal (high speed) modeMSA311_LOWPOWERMODE 	= 0x40, 	///< Low power (slow speed) modeMSA311_SUSPENDMODE 	= 0xC0, 	    ///< Suspend (sleep) mode
} msa311_powermode_t;#define MSA311_AXES_ENABLE_MSAK				0x1F
typedef enum{AXES_DISABLE 	= 0x00,AXES_ENABLE 	= 0xE0,
}msa311_axes_state_t;#define MSA311_DATA_RATE_MASK				0xF0			
/** The accelerometer data rate */
typedef enum {MSA311_DATARATE_1_HZ 			= 0x00,     	///<  1 HzMSA311_DATARATE_1_95_HZ 		= 0x01,  		///<  1.95 HzMSA311_DATARATE_3_9_HZ 			= 0x02,   		///<  3.9 HzMSA311_DATARATE_7_81_HZ 		= 0x03,  		///<  7.81 HzMSA311_DATARATE_15_63_HZ 		= 0x04, 		///<  15.63 HzMSA311_DATARATE_31_25_HZ 		= 0x05, 		///<  31.25 HzMSA311_DATARATE_62_5_HZ 		= 0x06,  		///<  62.5 HzMSA311_DATARATE_125_HZ 			= 0x07,   		///<  125 HzMSA311_DATARATE_250_HZ 			= 0x08,   		///<  250 HzMSA311_DATARATE_500_HZ 			= 0x09,   		///<  500 HzMSA311_DATARATE_1000_HZ 		= 0x0A,  		///<  1000 Hz
} msa311_dataRate_t;#define MSA311_BAND_WIDTH_MASK				0xE1
/** The accelerometer bandwidth */
typedef enum {MSA301_BANDWIDTH_1_95_HZ 		= 0x00,  	///<  1.95 HzMSA301_BANDWIDTH_3_9_HZ 		= 0x06,   	///<  3.9 HzMSA301_BANDWIDTH_7_81_HZ 		= 0x08,  	///<  7.81 HzMSA301_BANDWIDTH_15_63_HZ 	= 0x0A, 	///<  15.63 HzMSA301_BANDWIDTH_31_25_HZ 	= 0x0C, 	///<  31.25 HzMSA301_BANDWIDTH_62_5_HZ 		= 0x0E,  	///<  62.5 HzMSA301_BANDWIDTH_125_HZ 		= 0x10,   	///<  125 HzMSA301_BANDWIDTH_250_HZ 		= 0x12,   	///<  250 HzMSA301_BANDWIDTH_500_HZ 		= 0x14,   	///<  500 Hz
} msa301_bandwidth_t;#define MSA311_RANG_MASK					0xFC
/** The accelerometer ranges */
typedef enum {MSA311_RANGE_2_G 			= 0x00,  		///< +/- 2g (default value)MSA311_RANGE_4_G 			= 0x01,  		///< +/- 4gMSA311_RANGE_8_G 			= 0x02,  		///< +/- 8gMSA311_RANGE_16_G			= 0x03, 		///< +/- 16g
} msa311_range_t;#define MSA311_TAP_DUR_MASK      			0xF8
/** Tap duration parameter */
typedef enum {MSA311_TAPDUR_50_MS 		= 0x00,  		///< 50 millisMSA311_TAPDUR_100_MS 		= 0x01, 		///< 100 millisMSA311_TAPDUR_150_MS 		= 0x02, 		///< 150 millisMSA311_TAPDUR_200_MS 		= 0x03, 		///< 200 millisMSA311_TAPDUR_250_MS 		= 0x04, 		///< 250 millisMSA311_TAPDUR_375_MS 		= 0x05, 		///< 375 millisMSA311_TAPDUR_500_MS 		= 0x06, 		///< 500 millisMSA311_TAPDUR_700_MS 		= 0x07, 		///< 50 millis700 millis
} msa311_tapduration_t;#define MSA311_TAP_QUITE_MASK				0x7F
typedef enum{MSA311_TAPQUITE_20_MS		= 0x80,MSA311_TAPQUITE_30_MS		= 0x00,
}msa311_tapquite_t;#define MSA311_TAP_SHOCK_MASK				0xBF	typedef enum{MSA311_TAPSHOCK_50_MS   	= 0x00,MSA311_TAPSHOCK_70_MS		= 0x40,}msa311_tapshock_t;typedef enum
{MSA311_BOOL_FALSE = 0x00,        /**< false */MSA311_BOOL_TRUE  = 0x01,        /**< true */
} msa311_bool_t;typedef enum
{MSA311_INTERRUPT_FREE_FALL 	= 0x00,        /**< free fall */MSA311_INTERRUPT_ACTIVE		= 0x02,MSA311_INTERRUPT_D_TAP		= 0x04,MSA311_INTERRUPT_S_TAP		= 0x05,MSA311_INTERRUPT_ORIENT		= 0x06,} msa311_interrupt_map0_t;typedef enum
{MSA311_INTERRUPT_ACTIVE_EN_X 	= 0x00, MSA311_INTERRUPT_ACTIVE_EN_Y 	= 0x01,    MSA311_INTERRUPT_ACTIVE_EN_Z 	= 0x02,   MSA311_INTERRUPT_D_TAP_EN		= 0x04,MSA311_INTERRUPT_S_TAP_EN		= 0x05,MSA311_INTERRUPT_ORIENT_EN		= 0x06,
} msa311_interrupt_sw0_t;typedef enum
{MSA311_INTERRUPT_FREE_FALLEN 	= 0x03, MSA311_INTERRUPT_NEW_DATA_EN 	= 0x04,    
} msa311_interrupt_sw1_t;typedef enum{MSA311_INT_S_TAP_MESSAGE   		= 0x00,MSA311_INT_D_TAP_MESSAGE   		= 0x01,}msa311_int_message_type;typedef enum
{MSA311_FREE_FALL_INT_STATE 		= 0x00,MSA311_ACTIVE_INT_STATE			= 0x02,MSA311_D_TAP_INT_STATE			= 0x04,MSA311_S_TAP_INT_STATE			= 0x05,MSA311_ORIENT_INT_STATE			= 0x06,}msa311_int_state_t;// golbal function
void Msa311_Init(void);
void handle_int_message(void);
#endif

这样设置好msa311的寄存器后，当我们敲击的时候，int脚会拉低。所以我们只需要连接mm32一个gpio，并且配成中断模式，就可以捕获对应的敲击事件了。

3、中断接收并处理数据

将msa311的Int脚连接至mm32 的PC8.
pc8适配中断代码如下：

void BOARD_InitPins(void)
{/* 调用GPIO的HAL库对象结构体声明GPIO对象 */GPIO_Init_Type gpio_init;//pc 8 for msa311 inter detectuint32_t prioritygroup = 0;RCC_EnableAPB2Periphs(RCC_APB2_PERIPH_SYSCFG, true);/* 设置GPIO的模式 */gpio_init.PinMode  = GPIO_PinMode_In_PullUp;gpio_init.Speed = GPIO_Speed_50MHz;/* 选择引脚初始化 */gpio_init.Pins  = GPIO_PIN_8;GPIO_Init(GPIOC, &gpio_init);/* 将外部中断线设置为复用模式 */SYSCFG_SetExtIntMux(SYSCFG_EXTIPort_GPIOC, SYSCFG_EXTILine_8);/* 设置外部中断线的触发方式 */EXTI_SetTriggerIn(EXTI, EXTI_LINE_8, EXTI_TriggerIn_FallingEdge); /* 使能外部中断线 */EXTI_EnableLineInterrupt(EXTI, EXTI_LINE_8, true);prioritygroup = NVIC_GetPriorityGrouping();NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(prioritygroup, 0, 2));/* 使能对应的外部中断 */NVIC_EnableIRQ(EXTI9_5_IRQn);
}

对应的中断处理函数：

void EXTI9_5_IRQHandler(void)
{uint32_t flags = EXTI_GetLineStatus(EXTI);if ( 0u != ( flags & EXTI_LINE_8 ) ) /* Interrupts. */{handle_int_message();}EXTI_ClearLineStatus(EXTI, flags);
}

中断处理函数将事件处理交给handle_int_message()函数，此函数在msa311.c中定义。

void handle_int_message(void)
{uint8_t state;bool bRet;bRet = Msa311_ReadReg(MSA311_REG_MOTIONINT,&state);if (bRet == false){perror("Msa311_GetInterrupt1Enable read error\n");return;}if (state & (1 << MSA311_S_TAP_INT_STATE)){printf("this is s_tap \r\n");}else if (state & (1 << MSA311_D_TAP_INT_STATE)){printf("this is d_tap \r\n");}
}

在中断处理函数中，我们做个一件事，就是去读一下0x09寄存器的值，当第四位为1的时候，表示双击，第五位为1的时候，表示单击。
在这里插入图片描述

4、现象

在这里插入图片描述
单击模块时候打印 this is s_tap
双击模块时候打印 this is d_tap

5、代码

代码下载

http://www.15wanjia.com/news/45582.html

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