基于arduino的VL53L0X驅動做的C51適配VL53L0X驅動

ID:1096690 · 發表于 2023-10-31 20:13

1.簡介

在研究了各位大神的代碼后，結合購買模塊時商家提供的arduino的VL53L0X驅動，我修改ardiuno的驅動寫出了兼容C51的VL53L0X驅動。我的測試的單片機是STC8H3K64S4，IIC通信使用的時STC硬件的IIC。大家只需要把我的IIC驅動和顯示代碼修改成自己的，最后添加一個定時1ms的定時器作為VL53L0X的時基，就可以直接拿來用了。
這是本人第一次發帖，做的工作也比較簡單，如果有什么做的不好的還請諒解。

參考的網站：
http://www.zg4o1577.cn/bbs/dpj-167298-1.html

使用上面網站的代碼寫出來的程序，這個代碼只有最基本的測距功能，測距誤差大概在±5%。對我剛剛接觸VL53L0X時啟發很大。
在使用商家提供的arduino的VL53L0X驅動后，由于設置了VL53L0X的相關寄存器，精度可以達到±1%。當然超過模塊的1.2m的測距范圍精度還是會差很多。

2.上代碼

主函數 main.c
人機交互的相關代碼替換成自己的就行了

#include"inc/VL53L0X.h"

復制代碼

VL53L0X的驅動 VL53L0X.c

代碼太多了只顯示一部分，詳情看附件，大家用的時候記得添加時基就行了。

// Most of the functionality of this library is based on the VL53L0X API
// provided by ST (STSW-IMG005), and some of the explanatory comments are quoted
// or paraphrased from the API source code, API user manual (UM2039), and the
// VL53L0X datasheet.
#include "inc/VL53L0X.h"
#include "inc/VL53L0X_IIC.h"
#include "NodeHandler.h"
#include <string.h>
unsigned char stop_variable;
unsigned long measurement_timing_budget_us;
unsigned int io_timeout = 0, timeout_start_ms, t2;
bit did_timeout;
//===================================
//你自己的定時器時基定時1ms
void Time2() interrupt 12
{
t2++;
}
//==================================================
// Defines /////////////////////////////////////////////////////////////////////
// The Arduino two-wire interface uses a 7-bit number for the address,
// and sets the last bit correctly based on reads and writes
#define ADDRESS_DEFAULT 0x52
// Record the current time to check an upcoming timeout against
#define startTimeout() (timeout_start_ms = t2)
// Check if timeout is enabled (set to nonzero value) and has expired
#define checkTimeoutExpired() (io_timeout > 0 && ((unsigned int)t2 - timeout_start_ms) > io_timeout)
// Decode VCSEL (vertical cavity surface emitting laser) pulse period in PCLKs
// from register value
// based on VL53L0X_decode_vcsel_period()
#define decodeVcselPeriod(reg_val) (((reg_val) + 1) << 1)
// Encode VCSEL pulse period register value from period in PCLKs
// based on VL53L0X_encode_vcsel_period()
#define encodeVcselPeriod(period_pclks) (((period_pclks) >> 1) - 1)

復制代碼

IIC驅動
有人喜歡模擬IIC，有人喜歡硬件IIC，他們各有各的優點，大家按照自己的喜好替換調我的IIC驅動就行了

#define VL53L0X_address 0x52
//IIC寫8位數據
void VL53L0X_Write(unsigned char address, unsigned char value)
{
P_SW2 = 0xB0;
Start();
SendData(VL53L0X_address);
RecvACK();
SendData(address);
RecvACK();
SendData(value);
RecvACK();
Stop();
Delay();
P_SW2 = 0x00;
}
//IIC寫16位數據
void VL53L0X_Write16Bit(unsigned char address, unsigned int value)
{
P_SW2 = 0xB0;
VL53L0X_Write(address++, (value >> 8) & 0xFF);
VL53L0X_Write(address++, value & 0xFF);
P_SW2 = 0x00;
}
//IIC寫32位數據
//void VL53L0X_Write32Bit(unsigned char address, unsigned long value)
//{
// Start();
// SendData(VL53L0X_address);
// RecvACK();
// SendData(address);
// RecvACK();
// SendData((value >> 24) & 0xFF);
// RecvACK();
// SendData((value >> 16) & 0xFF);
// RecvACK();
// SendData((value >> 8) & 0xFF);
// RecvACK();
// SendData(value & 0xFF);
// RecvACK();
// Stop();
// Delay();
//}
//寫多位數據
void VL53L0X_WriteMulti(unsigned char address, unsigned char const * src, unsigned char count)
{
P_SW2 = 0xB0;
while(count--)
{
VL53L0X_Write(address++, *(src++));
}
P_SW2 = 0x00;
}
//IIC讀8位數據
unsigned char VL53L0X_Read(unsigned char address)
{
unsigned char receive;
P_SW2 = 0xB0;
Start();
SendData(VL53L0X_address);
RecvACK();
SendData(address);
RecvACK();
Start();
SendData(VL53L0X_address + 1);
RecvACK();
receive = RecvData();
SendNAK();
Stop();
Delay();
P_SW2 = 0x00;
return receive;
}
//IIC讀16位數據
unsigned int VL53L0X_Read16Bit(unsigned char address)
{
unsigned int receive;
P_SW2 = 0xB0;
receive = VL53L0X_Read(address++) << 8;
receive |= VL53L0X_Read(address);
P_SW2 = 0x00;
return receive;
}
//IIC讀多位數據
void VL53L0X_ReadMulti(unsigned char address, unsigned char * dst, unsigned char count)
{
while(count--)
{
*(dst++) = VL53L0X_Read(address++);
}
P_SW2 = 0x00;
}