带PIC18F27K42和MCC的MPU6050没有从模块中获取数据

大家好，其他项目用PIC18F27 K42和另一个时间，我正在寻找一些帮助与接口。我设置一个项目与MPLAB X和MCC工作的I2C从PIC18F27 K42在64 MHz的内部振荡器，以获得数据从MPU6050模块，我要的是获得陀螺仪数据从M我试图遵循这些项目，用PIC18F450实现同一个模块：不幸的是，我没有从模块中获取数据。在读取了数据表和寄存器映射和描述之后，我试着从模块WOHYAMAMI（0x75）读取一个寄存器（这给了我从模块的默认从属地址：0x68）向MPU6050从属设备发送一个读，我使用TFT显示器来查看I2C通信的输出。第一次是在那个时候（1）它可以读取从地址，并且我在TFT中看到它是十进制值（104），并且我用ASCII转换它。表是0x68！但我只得到了一个“0”作为回应。我不太清楚什么地方出了问题，我第一次读奴隶地址，然后我根本看不懂它。我的一个想法是，我目前以最简单的方式设置MCC，根据数据表，代码似乎在I2C通信期间寻找一些NACK，我不确定当前MCC函数正在开发中。我将分享代码和设置来显示。Mc.C.文件：MPU6050yRESUnjult.h文件：I2C2.C文件，这是MCC生成的：我也从MCC上传了我生成的项目和我以前共享的网站的项目模型。谢谢你的时间，让我们来解决这个问题吧！
项目模型从GPU6050.ZIP（7.14 KB）到G.A下载36次



      以下为原文

    Hello guys.

Other project with PIC18F27K42 and another time that I'm looking for some help with the interface.

I setup a project with MPLAB X and MCC to work with the I2C from PIC18F27K42 at 64MHz Internal Oscillator to get data from MPU6050 module, what I want is to get the gyroscope data from the module.

I was trying to follow these project where was implemented the same module with a PIC18F4550:
http://www.electronicwings.com/pic/mpu6050-gyroscope-accelerometer-temperature-interface-with-pic18f4550

And unfortunately I'm not getting the data from the module.

After read the datasheet and the Register Map and description, I try to read one register from the module WHO_AM_I (0x75) (which gives me the default slave address of the module: 0x68) sending a read to the MPU6050 Slave, I'm using a TFT Display to see the output from the I2C Communication.

The first time that goes the while(1) it can read the slave address and I saw it in the TFT as a decimal value (104) and I convert  it with the ASCII table and is 0x68! but then I only get a "0" as a response.

I'm not pretty sure what is going wrong, the first time I can read the slave address, then I can't read it at all... One of my thougts is that my current setup the MCC at the simplest way possible, and according to datasheet, the code seems to look for some Nacks during the I2C communication that I'm not sure that the current MCC functions generated are developing right now.

I will share the code and setup to show you clearly what's going on.
main.c file:
#include
#include
#include

#include "mcc_generated_files/mcc.h"
#include "spi_pic18f.h"
#include "font.h"
#include "ili9341.h"
#include "time_delay.h"
#include "MPU6050_res_define.h"
//#include "MPU6050.h"

#define MPU6050_ADDRESS 0x69 // AD0 as high!

void main(void)
{
    char buffer[20];
int Ax,Ay,Az,T,Gx,Gy,Gz;
float Xa,Ya,Za,t,Xg,Yg,Zg;
    // Initialize the device
    SYSTEM_Initialize();
    SPI1_Close();
    SPI1_Init();
    TFT_Init();
    TFT_MemoryAccessControl(TFT_HORIZONTAL);
    TFT_FillScreen(BLACK);
    TFT_SetFont(Courier_New_Bold_20, 1);
    TFT_ConstText("MPU hello", 20, 10, WHITE, BLACK);
    //MPU6050_Init();
    uint8_t value = 0;
   
    while(1)
    {
      
        value = i2c2_read1ByteRegister(MPU6050_ADDRESS, GYRO_XOUT_H);
        //value = i2c2_read1ByteRegister(MPU6050_ADDRESS, WHO_AM_I);
        if(value != 0)
        {
            sprintf(buffer, "mpu Gx = %3d ", value);
            TFT_Text(buffer, 20, 104, WHITE, BLACK);
        }
            
        Delay_ms(2000);
    }
}


MPU6050_res_define.h file:
#ifndef MPU6050_RES_DEFINE_H_
#define MPU6050_RES_DEFINE_H_

#define XG_OFFS_TC 0x00
#define YG_OFFS_TC 0x01
#define ZG_OFFS_TC 0x02
#define X_FINE_GAIN 0x03
#define Y_FINE_GAIN 0x04
#define Z_FINE_GAIN 0x05
#define XA_OFFS_H 0x06
#define XA_OFFS_L_TC 0x07
#define YA_OFFS_H 0x08
#define YA_OFFS_L_TC 0x09
#define ZA_OFFS_H 0x0A
#define ZA_OFFS_L_TC 0x0B
#define XG_OFFS_USRH 0x13
#define XG_OFFS_USRL 0x14
#define YG_OFFS_USRH 0x15
#define YG_OFFS_USRL 0x16
#define ZG_OFFS_USRH 0x17
#define ZG_OFFS_USRL 0x18
#define SMPLRT_DIV 0x19
#define CONFIG 0x1A
#define GYRO_CONFIG 0x1B
#define ACCEL_CONFIG 0x1C
#define FF_THR 0x1D
#define FF_DUR 0x1E
#define MOT_THR 0x1F
#define MOT_DUR 0x20
#define ZRMOT_THR 0x21
#define ZRMOT_DUR 0x22
#define FIFO_EN 0x23
#define I2C_MST_CTRL 0x24
#define I2C_SLV0_ADDR 0x25
#define I2C_SLV0_REG 0x26
#define I2C_SLV0_CTRL 0x27
#define I2C_SLV1_ADDR 0x28
#define I2C_SLV1_REG 0x29
#define I2C_SLV1_CTRL 0x2A
#define I2C_SLV2_ADDR 0x2B
#define I2C_SLV2_REG 0x2C
#define I2C_SLV2_CTRL 0x2D
#define I2C_SLV3_ADDR 0x2E
#define I2C_SLV3_REG 0x2F
#define I2C_SLV3_CTRL 0x30
#define I2C_SLV4_ADDR 0x31
#define I2C_SLV4_REG 0x32
#define I2C_SLV4_DO 0x33
#define I2C_SLV4_CTRL 0x34
#define I2C_SLV4_DI 0x35
#define I2C_MST_STATUS 0x36
#define INT_PIN_CFG 0x37
#define INT_ENABLE 0x38
#define DMP_INT_STATUS 0x39
#define INT_STATUS 0x3A
#define ACCEL_XOUT_H 0x3B
#define ACCEL_XOUT_L 0x3C
#define ACCEL_YOUT_H 0x3D
#define ACCEL_YOUT_L 0x3E
#define ACCEL_ZOUT_H 0x3F
#define ACCEL_ZOUT_L 0x40
#define TEMP_OUT_H 0x41
#define TEMP_OUT_L 0x42
#define GYRO_XOUT_H 0x43
#define GYRO_XOUT_L 0x44
#define GYRO_YOUT_H 0x45
#define GYRO_YOUT_L 0x46
#define GYRO_ZOUT_H 0x47
#define GYRO_ZOUT_L 0x48
#define EXT_SENS_DATA_00 0x49
#define EXT_SENS_DATA_01 0x4A
#define EXT_SENS_DATA_02 0x4B
#define EXT_SENS_DATA_03 0x4C
#define EXT_SENS_DATA_04 0x4D
#define EXT_SENS_DATA_05 0x4E
#define EXT_SENS_DATA_06 0x4F
#define EXT_SENS_DATA_07 0x50
#define EXT_SENS_DATA_08 0x51
#define EXT_SENS_DATA_09 0x52
#define EXT_SENS_DATA_10 0x53
#define EXT_SENS_DATA_11 0x54
#define EXT_SENS_DATA_12 0x55
#define EXT_SENS_DATA_13 0x56
#define EXT_SENS_DATA_14 0x57
#define EXT_SENS_DATA_15 0x58
#define EXT_SENS_DATA_16 0x59
#define EXT_SENS_DATA_17 0x5A
#define EXT_SENS_DATA_18 0x5B
#define EXT_SENS_DATA_19 0x5C
#define EXT_SENS_DATA_20 0x5D
#define EXT_SENS_DATA_21 0x5E
#define EXT_SENS_DATA_22 0x5F
#define EXT_SENS_DATA_23 0x60
#define MOT_DETECT_STATUS 0x61
#define I2C_SLV0_DO 0x63
#define I2C_SLV1_DO 0x64
#define I2C_SLV2_DO 0x65
#define I2C_SLV3_DO 0x66
#define I2C_MST_DELAY_CTRL 0x67
#define SIGNAL_PATH_RESET 0x68
#define MOT_DETECT_CTRL 0x69
#define USER_CTRL 0x6A
#define PWR_MGMT_1 0x6B
#define PWR_MGMT_2 0x6C
#define BANK_SEL 0x6D
#define MEM_START_ADDR 0x6E
#define MEM_R_W 0x6F
#define DMP_CFG_1 0x70
#define DMP_CFG_2 0x71
#define FIFO_COUNTH 0x72
#define FIFO_COUNTL 0x73
#define FIFO_R_W 0x74
#define WHO_AM_I 0x75


i2c2.c file, this is generated from MCC:
#include
#include
#include "i2c2.h"
#include "mcc.h"
static i2c_error lastError = I2C2_GOOD;

void I2C2_Initialize(void)
{
if(!I2C2CON0bits.EN || lastError != I2C2_GOOD)
    {
  lastError = I2C2_GOOD;
  // TXU 0; CSD Clock Stretching enabled; ACKT 0; RXO 0; ACKDT Acknowledge; ACKSTAT ACK received; ACKCNT Acknowledge;
  I2C2CON1 = 0x00;
  // ABD enabled; GCEN disabled; ACNT disabled; SDAHT 300 ns hold time; BFRET 8 I2C Clock pulses; FME disabled;
  I2C2CON2 = 0x00;
  // CLK MFINTOSC;
  I2C2CLK = 0x03;
  // CSTR Enable clocking; S Cleared by hardware after Start; MODE 7-bit address; EN enabled; RSEN disabled;
  I2C2CON0 = 0x84;
  I2C2PIR = 0;// ;Clear all the error flags
  I2C2ERR = 0;
}
}

i2c_error i2c2_getLastError(void)
{
    return lastError;
}

static inline void sendByte(uint8_t data)
{
    uint8_t delayCounter = 255;
    if(lastError == I2C2_GOOD)
    {
        while(--delayCounter)
        {
            if(I2C2STAT1bits.TXBE)
            {
                I2C2TXB = data;
                return;
            }
            else
            {
                __delay_us(1);
            }
        }
        lastError = I2C2_FAIL_TIMEOUT;
    }
}

static inline uint8_t receiveByte(void)
{
    uint8_t delayCounter = 255;
    if(lastError == I2C2_GOOD)
    {
        while(--delayCounter)
        {
            if(I2C2STAT1bits.RXBF)
            {
                return I2C2RXB;
            }
            else
            {
                __delay_us(1);
            }
        }
        lastError = I2C2_FAIL_TIMEOUT;
    }
return 0;
}

static inline void wait4Stop(void)
{
    uint8_t waitCount=255;
    if(lastError == I2C2_GOOD)
    {
        while(--waitCount)
        {
            if(I2C2PIRbits.PCIF)
            {
                return;
            }
            else
            {
                __delay_us(1);
            }
        }
        lastError = I2C2_FAIL_TIMEOUT;
    }
}

static inline void wait4Ack(void)
{
    uint8_t waitCount=255;
    if(lastError == I2C2_GOOD)
    {
        while(--waitCount)
        {
            if(!I2C2CON1bits.ACKSTAT)
            {
                return;
            }
            else
            {
                __delay_us(1);
            }
        }
        lastError = I2C2_FAIL_TIMEOUT;
    }
}

static inline void wait4MDRSetcount(uint8_t count)
{
    uint8_t waitCount=255;
    if(lastError == I2C2_GOOD)
    {
        while(--waitCount)
        {
            if(I2C2CON0bits.MDR)
            {
                I2C2CNT = count;
                return;
            }
            else
            {
                __delay_us(1);
            }
        }
        lastError = I2C2_FAIL_TIMEOUT;
    }
}

void i2c2_write1ByteRegister(uint8_t address, uint8_t reg, uint8_t data)
{
    I2C2_Initialize();
    I2C2ADB1= (uint8_t)(address<<1);
    I2C2CNT=2;
    I2C2CON0bits.S=1;
    sendByte(reg);
    sendByte(data);
    wait4Stop();
}

void i2c2_writeNBytes(uint8_t address, void* data, uint8_t len)
{
    uint8_t *dataPointer = data;

    I2C2_Initialize();
    I2C2ADB1= (uint8_t)(address<<1);
    I2C2CNT=len;
    I2C2CON0bits.S=1; //Start
    while(len--)
    {
        sendByte(*dataPointer++);
    }
    wait4Stop();
}

uint8_t i2c2_read1ByteRegister(uint8_t address, uint8_t reg)
{
    uint8_t result;

    I2C2_Initialize();
    I2C2ADB1= (uint8_t)(address<<1);
    I2C2CNT=1;
    I2C2CON0bits.RSEN=1;
    I2C2CON0bits.S=1; //Start
    while (I2C2CON0bits.S);
    sendByte(reg);
    wait4MDRSetcount(1);
    address = (uint8_t)(address<<1);
    I2C2ADB1= (uint8_t)(address| 0x01); //Change the R/W bit for read
    I2C2CON0bits.S=1; //Start
    I2C2CON0bits.RSEN=0;
    result = receiveByte();
    wait4Stop();
    return result;
}


uint16_t i2c2_read2ByteRegister(uint8_t address, uint8_t reg)
{
    uint16_t result;

    I2C2_Initialize();
    I2C2ADB1= (uint8_t)(address<<1);
    I2C2CNT=1;
    I2C2CON0bits.RSEN=1;
    I2C2CON0bits.S=1; //Start
    while (I2C2CON0bits.S);
    sendByte(reg);
    wait4Ack();
    wait4MDRSetcount(2);
    address=(uint8_t)(address<<1);
    I2C2ADB1= (uint8_t)(address| 0x01); //Change the R/W bit for read
    I2C2CON0bits.S=1; //Start
    while(I2C2CON0bits.S);
    I2C2CON0bits.RSEN=0;
    result = receiveByte();//read MSB of the 2byte register
    result = result<<8;
    result = result | receiveByte();//read LSB of the 2byte register
    wait4Stop();
    return result;
}

void i2c2_write2ByteRegister(uint8_t address, uint8_t reg, uint16_t data)
{
    I2C2_Initialize();
    I2C2ADB1= (uint8_t)(address<<1);
    I2C2CNT=3;
    I2C2CON0bits.S=1; //Start
    sendByte(reg);
    sendByte(data>>8);
    sendByte(data & 0x00FF);
    wait4Stop();
}

void i2c2_readDataBlock(uint8_t address, uint8_t reg, char *data, uint8_t len)
{
    I2C2_Initialize();
    I2C2ADB1= (uint8_t)(address<<1);
    I2C2CNT=1;
    I2C2CON0bits.RSEN=1;
    I2C2CON0bits.S=1; //Start
    sendByte(reg);
    wait4Ack();
    wait4MDRSetcount(len);
    address=(uint8_t)(address<<1);
    I2C2ADB1= (uint8_t)(address| 0x01); //Change the R/W bit for read
    I2C2CON0bits.S=1; //Start
    I2C2CON0bits.RSEN=0;
    while(len--)
    {
        *data++ = receiveByte();
    }
    wait4Stop();
}



I'm also uploading my generated project from MCC and the project model from the website that I shared before.

Thank you for your time and let's figure this out!
   Attachment(s)

mcc_generated_project_files.zip (30.25 KB) - downloaded 40 times
Project model to g...a from MPU6050.zip (7.14 KB) - downloaded 36 times

0