546 lines
19 KiB
C
546 lines
19 KiB
C
#include "MPU6050.h"
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#include "I2C.h"
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#include "usart.h"
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#define PRINT_ACCEL (0x01)
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#define PRINT_GYRO (0x02)
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#define PRINT_QUAT (0x04)
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#define ACCEL_ON (0x01)
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#define GYRO_ON (0x02)
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#define MOTION (0)
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#define NO_MOTION (1)
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#define DEFAULT_MPU_HZ (200)
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#define FLASH_SIZE (512)
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#define FLASH_MEM_START ((void*)0x1800)
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#define q30 1073741824.0f
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short gyro[3], accel[3], sensors;
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//零点漂移计数
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int Deviation_Count;
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short sum_gyro[3];
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short sum_accel[3];
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// Gyro static error, raw data
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//陀螺仪静差，原始数据
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short Deviation_gyro[3],Original_gyro[3];
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short Deviation_accel[3],Original_accel[3];
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float q0=1.0f,q1=0.0f,q2=0.0f,q3=0.0f;
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//static signed char gyro_orientation[9] = {-1, 0, 0,
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// 0,-1, 0,
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// 0, 0, 1};
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//static unsigned short inv_row_2_scale(const signed char *row)
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//{
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// unsigned short b;
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// if (row[0] > 0)
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// b = 0;
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// else if (row[0] < 0)
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// b = 4;
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// else if (row[1] > 0)
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// b = 1;
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// else if (row[1] < 0)
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// b = 5;
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// else if (row[2] > 0)
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// b = 2;
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// else if (row[2] < 0)
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// b = 6;
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// else
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// b = 7; // error
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// return b;
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//}
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void MPU6050_task(void *pvParameters)
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{
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u32 lastWakeTime = getSysTickCnt();
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while(1)
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{
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//This task runs at 100Hz
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//此任务以100Hz的频率运行
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vTaskDelayUntil(&lastWakeTime, F2T(RATE_100_HZ));
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//Read the gyroscope zero before starting
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//开机前，读取陀螺仪零点
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if(Deviation_Count<CONTROL_DELAY)
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{
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Deviation_Count++;
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sum_gyro[0]+=gyro[0];
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sum_gyro[1]+=gyro[1];
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sum_gyro[2]+=gyro[2];
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sum_accel[0]+=accel[0];
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sum_accel[1]+=accel[1];
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sum_accel[2]+=accel[2];
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for(int i=0;i<3;i++)
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{
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Deviation_gyro[i] = (short)(sum_gyro[i] / (short)Deviation_Count);
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}
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// memcpy(Deviation_gyro,gyro,sizeof(gyro));
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memcpy(Deviation_accel,accel,sizeof(accel));
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}
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MPU_Get_Gyroscope(); //得到陀螺仪数据
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MPU_Get_Accelscope(); //获得加速度计值(原始值)
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}
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}
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//static unsigned short inv_orientation_matrix_to_scalar(
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// const signed char *mtx)
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//{
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// unsigned short scalar;
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// scalar = inv_row_2_scale(mtx);
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// scalar |= inv_row_2_scale(mtx + 3) << 3;
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// scalar |= inv_row_2_scale(mtx + 6) << 6;
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// return scalar;
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//}
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//static void run_self_test(void)
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//{
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// int result;
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// long gyro[3], accel[3];
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// result = mpu_run_self_test(gyro, accel);
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// if (result == 0x7) {
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// /* Test passed. We can trust the gyro data here, so let's push it down
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// * to the DMP.
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// */
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// float sens;
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// unsigned short accel_sens;
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// mpu_get_gyro_sens(&sens);
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// gyro[0] = (long)(gyro[0] * sens);
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// gyro[1] = (long)(gyro[1] * sens);
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// gyro[2] = (long)(gyro[2] * sens);
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// dmp_set_gyro_bias(gyro);
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// mpu_get_accel_sens(&accel_sens);
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// accel[0] *= accel_sens;
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// accel[1] *= accel_sens;
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// accel[2] *= accel_sens;
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// dmp_set_accel_bias(accel);
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// //printf("setting bias succesfully ......\r\n");
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// }
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//}
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uint8_t buffer[14];
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int16_t MPU6050_FIFO[6][11];
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int16_t Gx_offset=0,Gy_offset=0,Gz_offset=0;
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/**************************************************************************
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Function: The new ADC data is updated to FIFO array for filtering
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Input : ax，ay，az：x，y, z-axis acceleration data；gx，gy，gz：x. Y, z-axis angular acceleration data
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Output : none
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函数功能：将新的ADC数据更新到 FIFO数组，进行滤波处理
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入口参数：ax，ay，az：x，y，z轴加速度数据；gx，gy，gz：x，y，z轴角加速度数据
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返回 值：无
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**************************************************************************/
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void MPU6050_newValues(int16_t ax,int16_t ay,int16_t az,int16_t gx,int16_t gy,int16_t gz)
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{
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unsigned char i ;
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int32_t sum=0;
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for(i=1;i<10;i++){ //FIFO 操作
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MPU6050_FIFO[0][i-1]=MPU6050_FIFO[0][i];
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MPU6050_FIFO[1][i-1]=MPU6050_FIFO[1][i];
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MPU6050_FIFO[2][i-1]=MPU6050_FIFO[2][i];
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MPU6050_FIFO[3][i-1]=MPU6050_FIFO[3][i];
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MPU6050_FIFO[4][i-1]=MPU6050_FIFO[4][i];
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MPU6050_FIFO[5][i-1]=MPU6050_FIFO[5][i];
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}
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MPU6050_FIFO[0][9]=ax;//将新的数据放置到 数据的最后面
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MPU6050_FIFO[1][9]=ay;
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MPU6050_FIFO[2][9]=az;
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MPU6050_FIFO[3][9]=gx;
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MPU6050_FIFO[4][9]=gy;
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MPU6050_FIFO[5][9]=gz;
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sum=0;
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for(i=0;i<10;i++){ //求当前数组的合，再取平均值
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sum+=MPU6050_FIFO[0][i];
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}
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MPU6050_FIFO[0][10]=sum/10;
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sum=0;
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for(i=0;i<10;i++){
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sum+=MPU6050_FIFO[1][i];
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}
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MPU6050_FIFO[1][10]=sum/10;
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sum=0;
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for(i=0;i<10;i++){
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sum+=MPU6050_FIFO[2][i];
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}
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MPU6050_FIFO[2][10]=sum/10;
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sum=0;
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for(i=0;i<10;i++){
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sum+=MPU6050_FIFO[3][i];
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}
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MPU6050_FIFO[3][10]=sum/10;
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sum=0;
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for(i=0;i<10;i++){
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sum+=MPU6050_FIFO[4][i];
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}
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MPU6050_FIFO[4][10]=sum/10;
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sum=0;
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for(i=0;i<10;i++){
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sum+=MPU6050_FIFO[5][i];
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}
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MPU6050_FIFO[5][10]=sum/10;
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}
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/**************************************************************************
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Function: Setting the clock source of mpu6050
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Input : source：Clock source number
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Output : none
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函数功能：设置 MPU6050 的时钟源
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入口参数：source：时钟源编号
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返回 值：无
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* CLK_SEL | Clock Source
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* --------+--------------------------------------
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* 0 | Internal oscillator
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* 1 | PLL with X Gyro reference
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* 2 | PLL with Y Gyro reference
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* 3 | PLL with Z Gyro reference
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* 4 | PLL with external 32.768kHz reference
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* 5 | PLL with external 19.2MHz reference
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* 6 | Reserved
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* 7 | Stops the clock and keeps the timing generator in reset
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**************************************************************************/
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void MPU6050_setClockSource(uint8_t source){
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I2C_WriteBits(devAddr, MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_CLKSEL_BIT, MPU6050_PWR1_CLKSEL_LENGTH, source);
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}
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/** Set full-scale gyroscope range.
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* @param range New full-scale gyroscope range value
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* @see getFullScaleRange()
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* @see MPU6050_GYRO_FS_250
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* @see MPU6050_RA_GYRO_CONFIG
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* @see MPU6050_GCONFIG_FS_SEL_BIT
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* @see MPU6050_GCONFIG_FS_SEL_LENGTH
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*/
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void MPU6050_setFullScaleGyroRange(uint8_t range) {
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I2C_WriteBits(devAddr, MPU6050_RA_GYRO_CONFIG, MPU6050_GCONFIG_FS_SEL_BIT, MPU6050_GCONFIG_FS_SEL_LENGTH, range);
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}
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/**************************************************************************
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Function: Setting the maximum range of mpu6050 accelerometer
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Input : range：Acceleration maximum range number
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Output : none
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函数功能：设置 MPU6050 加速度计的最大量程
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入口参数：range：加速度最大量程编号
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返回 值：无
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**************************************************************************/
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//#define MPU6050_ACCEL_FS_2 0x00 //===最大量程+-2G
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//#define MPU6050_ACCEL_FS_4 0x01 //===最大量程+-4G
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//#define MPU6050_ACCEL_FS_8 0x02 //===最大量程+-8G
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//#define MPU6050_ACCEL_FS_16 0x03 //===最大量程+-16G
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void MPU6050_setFullScaleAccelRange(uint8_t range) {
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I2C_WriteBits(devAddr, MPU6050_RA_ACCEL_CONFIG, MPU6050_ACONFIG_AFS_SEL_BIT, MPU6050_ACONFIG_AFS_SEL_LENGTH, range);
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}
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/**************************************************************************
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Function: Set mpu6050 to sleep mode or not
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Input : enable：1，sleep；0，work；
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Output : none
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函数功能：设置 MPU6050 是否进入睡眠模式
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入口参数：enable：1，睡觉；0，工作；
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返回 值：无
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**************************************************************************/
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void MPU6050_setSleepEnabled(uint8_t enabled) {
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I2C_WriteOneBit(devAddr, MPU6050_RA_PWR_MGMT_1, MPU6050_PWR1_SLEEP_BIT, enabled);
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}
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/**************************************************************************
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Function: Read identity
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Input : none
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Output : 0x68
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函数功能：读取 MPU6050 WHO_AM_I 标识
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入口参数：无
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返回 值：0x68
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**************************************************************************/
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uint8_t MPU6050_getDeviceID(void) {
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return I2C_ReadOneByte(devAddr,MPU6050_RA_WHO_AM_I);
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// IICreadBytes(devAddr, MPU6050_RA_WHO_AM_I, 1, buffer);
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// return buffer[0];
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}
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/**************************************************************************
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Function: Check whether mpu6050 is connected
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Input : none
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Output : 1：Connected；0：Not connected
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函数功能：检测MPU6050 是否已经连接
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入口参数：无
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返回 值：1：已连接；0：未连接
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**************************************************************************/
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uint8_t MPU6050_testConnection(void) {
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if(MPU6050_getDeviceID() == 0x68) //0b01101000;
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return 1;
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else return 0;
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}
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/**************************************************************************
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Function: Setting whether mpu6050 is the host of aux I2C cable
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Input : enable：1，yes；0;not
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Output : none
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函数功能：设置 MPU6050 是否为AUX I2C线的主机
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入口参数：enable：1，是；0：否
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返回 值：无
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**************************************************************************/
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void MPU6050_setI2CMasterModeEnabled(uint8_t enabled) {
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I2C_WriteOneBit(devAddr, MPU6050_RA_USER_CTRL, MPU6050_USERCTRL_I2C_MST_EN_BIT, enabled);
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}
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/**************************************************************************
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Function: Setting whether mpu6050 is the host of aux I2C cable
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Input : enable：1，yes；0;not
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Output : none
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函数功能：设置 MPU6050 是否为AUX I2C线的主机
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入口参数：enable：1，是；0：否
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返回 值：无
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**************************************************************************/
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void MPU6050_setI2CBypassEnabled(uint8_t enabled) {
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I2C_WriteOneBit(devAddr, MPU6050_RA_INT_PIN_CFG, MPU6050_INTCFG_I2C_BYPASS_EN_BIT, enabled);
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}
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/**************************************************************************
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Function: initialization Mpu6050 to enter the available state
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Input : none
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Output : none
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函数功能：初始化 MPU6050 以进入可用状态
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入口参数：无
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返回 值：无
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**************************************************************************/
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u8 MPU6050_initialize(void)
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{
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u8 res;
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//IIC_Init(); //Initialize the IIC bus //初始化IIC总线
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I2C_WriteOneByte(devAddr,MPU6050_RA_PWR_MGMT_1,0X80); //Reset MPUrobot_select_init.h //复位MPUrobot_select_init.h
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delay_ms(200); //Delay 200 ms //延时200ms
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I2C_WriteOneByte(devAddr,MPU6050_RA_PWR_MGMT_1,0X00); //Wake mpurobot_select_init.h //唤醒MPUrobot_select_init.h
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//MPU6050_Set_Gyro_Fsr(1); //Gyroscope sensor //陀螺仪传感器,±500dps=±500°/s ±32768 (gyro/32768*500)*PI/180(rad/s)=gyro/3754.9(rad/s)
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MPU6050_setFullScaleGyroRange(MPU6050_GYRO_FS_500);
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//MPU6050_Set_Accel_Fsr(0); //Acceleration sensor //加速度传感器,±2g=±2*9.8m/s^2 ±32768 accel/32768*19.6=accel/1671.84
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MPU6050_setFullScaleAccelRange(MPU6050_ACCEL_FS_2);
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MPU6050_Set_Rate(50); //Set the sampling rate to 50Hz //设置采样率50Hz
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I2C_WriteOneByte(devAddr,MPU6050_RA_INT_ENABLE,0X00); //Turn off all interrupts //关闭所有中断
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I2C_WriteOneByte(devAddr,MPU6050_RA_USER_CTRL,0X00); //The I2C main mode is off //I2C主模式关闭
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I2C_WriteOneByte(devAddr,MPU6050_RA_FIFO_EN,0X00); //Close the FIFO //关闭FIFO
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//The INT pin is low, enabling bypass mode to read the magnetometer directly
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//INT引脚低电平有效，开启bypass模式，可以直接读取磁力计
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I2C_WriteOneByte(devAddr,MPU6050_RA_INT_PIN_CFG,0X80);
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//Read the ID of MPU6050
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//读取MPU6050的ID
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res=I2C_ReadOneByte(devAddr,MPU6050_RA_WHO_AM_I);
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if(res==MPU6050_DEFAULT_ADDRESS) //The device ID is correct, The correct device ID depends on the AD pin //器件ID正确, 器件ID的正确取决于AD引脚
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{
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I2C_WriteOneByte(devAddr,MPU6050_RA_PWR_MGMT_1,0X01); //Set CLKSEL,PLL X axis as reference //设置CLKSEL,PLL X轴为参考
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I2C_WriteOneByte(devAddr,MPU6050_RA_PWR_MGMT_2,0X00); //Acceleration and gyroscope both work //加速度与陀螺仪都工作
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MPU6050_Set_Rate(50); //Set the sampling rate to 50Hz //设置采样率为50Hz
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}else return 1;
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return 0;
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}
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/**************************************************************************
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Function: Initialization of DMP in mpu6050
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Input : none
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Output : none
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函数功能：MPU6050内置DMP的初始化
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入口参数：无
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返回 值：无
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**************************************************************************/
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//void DMP_Init(void)
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//{
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// u8 temp[1]={0};
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// i2cRead(0x68,0x75,1,temp);
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// printf("mpu_set_sensor complete ......\r\n");
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// if(temp[0]!=0x68)NVIC_SystemReset();
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// if(!mpu_init())
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// {
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// if(!mpu_set_sensors(INV_XYZ_GYRO | INV_XYZ_ACCEL))
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// printf("mpu_set_sensor complete ......\r\n");
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// if(!mpu_configure_fifo(INV_XYZ_GYRO | INV_XYZ_ACCEL))
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// printf("mpu_configure_fifo complete ......\r\n");
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// if(!mpu_set_sample_rate(DEFAULT_MPU_HZ))
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// printf("mpu_set_sample_rate complete ......\r\n");
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// if(!dmp_load_motion_driver_firmware())
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// printf("dmp_load_motion_driver_firmware complete ......\r\n");
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// if(!dmp_set_orientation(inv_orientation_matrix_to_scalar(gyro_orientation)))
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// printf("dmp_set_orientation complete ......\r\n");
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// if(!dmp_enable_feature(DMP_FEATURE_6X_LP_QUAT | DMP_FEATURE_TAP |
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// DMP_FEATURE_ANDROID_ORIENT | DMP_FEATURE_SEND_RAW_ACCEL | DMP_FEATURE_SEND_CAL_GYRO |
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// DMP_FEATURE_GYRO_CAL))
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// printf("dmp_enable_feature complete ......\r\n");
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// if(!dmp_set_fifo_rate(DEFAULT_MPU_HZ))
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// printf("dmp_set_fifo_rate complete ......\r\n");
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// run_self_test();
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// if(!mpu_set_dmp_state(1))
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// printf("mpu_set_dmp_state complete ......\r\n");
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// }
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//}
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/**************************************************************************
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Function: Read the attitude information of DMP in mpu6050
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Input : none
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Output : none
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函数功能：读取MPU6050内置DMP的姿态信息
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入口参数：无
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返回 值：无
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**************************************************************************/
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//void Read_DMP(void)
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//{
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// unsigned long sensor_timestamp;
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// unsigned char more;
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// long quat[4];
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// dmp_read_fifo(gyro, accel, quat, &sensor_timestamp, &sensors, &more); //读取DMP数据
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// if (sensors & INV_WXYZ_QUAT )
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// {
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// q0=quat[0] / q30;
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// q1=quat[1] / q30;
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// q2=quat[2] / q30;
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// q3=quat[3] / q30; //四元数
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// Roll = asin(-2 * q1 * q3 + 2 * q0* q2)* 57.3; //计算出横滚角
|
||
// Pitch = atan2(2 * q2 * q3 + 2 * q0 * q1, -2 * q1 * q1 - 2 * q2* q2 + 1)* 57.3; // 计算出俯仰角
|
||
// Yaw = atan2(2*(q1*q2 + q0*q3),q0*q0+q1*q1-q2*q2-q3*q3) * 57.3; //计算出偏航角
|
||
// }
|
||
|
||
//}
|
||
/**************************************************************************
|
||
Function: Read mpu6050 built-in temperature sensor data
|
||
Input : none
|
||
Output : Centigrade temperature
|
||
函数功能：读取MPU6050内置温度传感器数据
|
||
入口参数：无
|
||
返回 值：摄氏温度
|
||
**************************************************************************/
|
||
int Read_Temperature(void)
|
||
{
|
||
float Temp;
|
||
Temp=(I2C_ReadOneByte(devAddr,MPU6050_RA_TEMP_OUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_TEMP_OUT_L);
|
||
if(Temp>32768) Temp-=65536; //数据类型转换
|
||
Temp=(36.53f+Temp/340)*10; //温度放大十倍存放
|
||
return (int)Temp;
|
||
}
|
||
|
||
/**************************************************************************
|
||
Function: Initialize TIM2 as the encoder interface mode
|
||
Input : LPF: Digital low-pass filtering frequency (Hz)
|
||
Output : 0: Settings successful, others: Settings failed
|
||
函数功能：设置MPUrobot_select_init.h的数字低通滤波器
|
||
入口参数：lpf:数字低通滤波频率(Hz)
|
||
返回 值：0:设置成功, 其他:设置失败
|
||
**************************************************************************/
|
||
unsigned char MPU6050_Set_LPF(u16 lpf)
|
||
{
|
||
u8 data=0;
|
||
if(lpf>=188)data=1;
|
||
else if(lpf>=98)data=2;
|
||
else if(lpf>=42)data=3;
|
||
else if(lpf>=20)data=4;
|
||
else if(lpf>=10)data=5;
|
||
else data=6;
|
||
return I2C_WriteOneByte(devAddr,MPU6050_RA_CONFIG,data); //Set the digital lowpass filter//设置数字低通滤波器
|
||
}
|
||
/**************************************************************************
|
||
Function: Initialize TIM2 as the encoder interface mode
|
||
Input : rate:4~1000(Hz)
|
||
Output : 0: Settings successful, others: Settings failed
|
||
函数功能：设置MPUrobot_select_init.h的采样率(假定Fs=1KHz)
|
||
入口参数：rate:4~1000(Hz)
|
||
返回 值：0:设置成功, 其他:设置失败
|
||
**************************************************************************/
|
||
unsigned char MPU6050_Set_Rate(u16 rate)
|
||
{
|
||
u8 data;
|
||
if(rate>1000)rate=1000;
|
||
if(rate<4)rate=4;
|
||
data=1000/rate-1;
|
||
data=I2C_WriteOneByte(devAddr,MPU6050_RA_SMPLRT_DIV,data); //Set the digital lowpass filter//设置数字低通滤波器
|
||
return MPU6050_Set_LPF(rate/2); //Automatically sets LPF to half of the sampling rate //自动设置LPF为采样率的一半
|
||
}
|
||
|
||
/**************************************************************************
|
||
Function: Initialize TIM2 as the encoder interface mode
|
||
Input : Gx, Gy, Gz: raw readings (plus or minus) of the x,y, and z axes of the gyroscope
|
||
Output : 0: success, others: error code
|
||
函数功能：获得陀螺仪值(原始值)
|
||
**************************************************************************/
|
||
void MPU_Get_Gyroscope(void)
|
||
{
|
||
gyro[0]=(I2C_ReadOneByte(devAddr,MPU6050_RA_GYRO_XOUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_GYRO_XOUT_L); //读取X轴陀螺仪
|
||
gyro[1]=(I2C_ReadOneByte(devAddr,MPU6050_RA_GYRO_YOUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_GYRO_YOUT_L); //读取Y轴陀螺仪
|
||
gyro[2]=(I2C_ReadOneByte(devAddr,MPU6050_RA_GYRO_ZOUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_GYRO_ZOUT_L); //读取Z轴陀螺仪
|
||
|
||
if(Deviation_Count<CONTROL_DELAY) // 10 seconds before starting //开机前10秒
|
||
{
|
||
|
||
Led_Count=1; //LED high frequency flashing //LED高频闪烁
|
||
Flag_Stop=1; //The software fails to flag location 1 //软件失能标志位置1
|
||
}
|
||
else //10 seconds after starting //开机10秒后
|
||
{
|
||
if(Deviation_Count==CONTROL_DELAY)
|
||
Flag_Stop=0; //The software fails to flag location 0 //软件失能标志位置0
|
||
Led_Count=300; //The LED returns to normal flicker frequency //LED恢复正常闪烁频率
|
||
|
||
//Save the raw data to update zero by clicking the user button
|
||
//保存原始数据用于单击用户按键更新零点
|
||
Original_gyro[0] =gyro[0];
|
||
Original_gyro[1] =gyro[1];
|
||
Original_gyro[2]= gyro[2];
|
||
|
||
//Removes zero drift data
|
||
//去除零点漂移的数据
|
||
gyro[0] =Original_gyro[0]-Deviation_gyro[0];
|
||
gyro[1] =Original_gyro[1]-Deviation_gyro[1];
|
||
gyro[2]= Original_gyro[2]-Deviation_gyro[2];
|
||
}
|
||
|
||
}
|
||
/**************************************************************************
|
||
Function: Initialize TIM2 as the encoder interface mode
|
||
Input : Gx, Gy, Gz: raw readings (plus or minus) of the x,y, and z axes of the gyroscope
|
||
Output : 0: success, others: error code
|
||
函数功能：获得加速度计值(原始值)
|
||
**************************************************************************/
|
||
void MPU_Get_Accelscope(void)
|
||
{
|
||
accel[0]=(I2C_ReadOneByte(devAddr,MPU6050_RA_ACCEL_XOUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_ACCEL_XOUT_L); //读取X轴加速度计
|
||
accel[1]=(I2C_ReadOneByte(devAddr,MPU6050_RA_ACCEL_YOUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_ACCEL_YOUT_L); //读取X轴加速度计
|
||
accel[2]=(I2C_ReadOneByte(devAddr,MPU6050_RA_ACCEL_ZOUT_H)<<8)+I2C_ReadOneByte(devAddr,MPU6050_RA_ACCEL_ZOUT_L); //读取Z轴加速度计
|
||
|
||
if(Deviation_Count<CONTROL_DELAY) // 10 seconds before starting //开机前10秒
|
||
{
|
||
|
||
}
|
||
else //10 seconds after starting //开机10秒后
|
||
{
|
||
//Save the raw data to update zero by clicking the user button
|
||
//保存原始数据用于单击用户按键更新零点
|
||
Original_accel[0] =accel[0];
|
||
Original_accel[1] =accel[1];
|
||
Original_accel[2]= accel[2];
|
||
|
||
//Removes zero drift data
|
||
//去除零点漂移的数据
|
||
accel[0] =Original_accel[0]-Deviation_accel[0];
|
||
accel[1] =Original_accel[1]-Deviation_accel[1];
|
||
accel[2]= Original_accel[2]-Deviation_accel[2]+16384;
|
||
}
|
||
}
|
||
|
||
//------------------End of File----------------------------
|