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pe43xx衰减器使用教程

前言

距离上次使用已经有段时间了，很多细节已经忘记，若本文有疏漏，还请多多包涵

使用方法

将下列代码加入用户文件

/********************************************************************************* @file           : pe43xx.c* @author         : Silencecmsj* @brief          : None* @attention      : None* @date           : 2024/7/31*******************************************************************************                             _ooOoo_*                            o8888888o*                            88" . "88*                            (| -_- |)*                            O\  =  /O*                         ____/`---'\____*                       .'  \\|     |//  `.*                      /  \\|||  :  |||//  \*                     /  _||||| -:- |||||-  \*                     |   | \\\  -  /// |   |*                     | \_|  ''\---/''  |   |*                     \  .-\__  `-`  ___/-. /*                   ___`. .'  /--.--\  `. . __*                ."" '<  `.___\_<|>_/___.'  >'"".*               | | :  `- \`.;`\ _ /`;.`/ - ` : | |*               \  \ `-.   \_ __\ /__ _/   .-` /  /*          ======`-.____`-.___\_____/___.-`____.-'======*                             `=---='*          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*******************************************************************************/#include "pe43xx.h"uint8_t _type;
float _max;
float _step;
float _level;//type写PE43xx (PE4302/PE4306/PE4312)void PE43xx_f( uint8_t type) {
//	_pin_le = pin_le;
//	_pin_clock = pin_clock;
//	_pin_data = pin_data;_type = type;
}void begin() {// set our internal max and step valuesswitch (_type) {case PE4302:case PE4312:_max = 31.5;_step = 0.5;break;case PE4306:_max = 30;_step = 1;break;default:#warning type not certain, going with defaults, step=1 max=30_step = 1;_max = 30;break;}// set level to 0setLevel(0);
}int setLevel(float level) {// bounds checkif(level < 0 || level > getMax() ) {return 0;}_level = level;_writeLevel();return 1;
}void _writeLevel() {// PE4302 and PE4312 wants something like this//// C16  C8  C4  C2  C1  C0.5  =>  result//  0    0   0   0   0    0   =>  0db//  0    0   0   0   0    1   =>  0.5db//  0    0   1   1   0    1   =>  6.5db//  1    1   1   1   1    1   => 31.5db// for PE4306 (which has only 1db resolution)//// C16  C8  C4  C2  C1  =>  result//  0    0   0   0   0  =>  0db//  0    0   0   0   1  =>  1db//  0    1   0   0   1  =>  9db//  1    1   1   1   1  => 31db// so the big different is that one can set the .5 bit or not// get the integer part, it will be the same for both chipsint intlevel = _level;//_level==31.5...,int intlevel==31// default to 5 bitsint bits = 5;// if our step is less than 1 the chip supports the 0.5 decimalif(_step < 1) {// one more bitbits = 6;// if the decimal is not 0 shift 1 into our levelif( (_level*10 - intlevel*10) > 0) //有小数部分{intlevel = intlevel << 1;
//            bitWrite(intlevel, 0, 1);intlevel+=1;} else {intlevel = intlevel << 1;
//            bitWrite(intlevel, 0, 0);}}// LE and CLOCK down to get the chip listen
//    digitalWrite(_pin_le, LOW);
//    digitalWrite(_pin_clock,LOW);HAL_GPIO_WritePin(_pin_le_GPIO_Port, _pin_le_Pin, GPIO_PIN_RESET);HAL_GPIO_WritePin(_pin_clock_GPIO_Port, _pin_clock_Pin, GPIO_PIN_RESET);// Write the level out MSB firstint b;for (int bit = bits; bit > 0; bit--) {b = ((intlevel << 1) >> bit) & 0x01;HAL_GPIO_WritePin(_pin_data_GPIO_Port, _pin_data_Pin, b);HAL_GPIO_WritePin(_pin_clock_GPIO_Port, _pin_clock_Pin, GPIO_PIN_SET);HAL_GPIO_WritePin(_pin_clock_GPIO_Port, _pin_clock_Pin, GPIO_PIN_RESET);}// toggle LE to latch
//    digitalWrite(_pin_le, HIGH); // Toggle LE high to enable latch
//    digitalWrite(_pin_le, LOW);  // and then low again to hold it.HAL_GPIO_WritePin(_pin_le_GPIO_Port, _pin_le_Pin, GPIO_PIN_SET);HAL_GPIO_WritePin(_pin_le_GPIO_Port, _pin_le_Pin, GPIO_PIN_RESET);
}// getters
float getLevel() {return _level;
}float getMax() {return _max;
}float getStep() {return _step;
}//main调用函数
void PE43xx_init(uint8_t type,float level)//第一次用
{PE43xx_f(type);begin();setLevel(level);}
void PE43xx_changelevel(float level)//非第一次用
{setLevel(level);}

/********************************************************************************* @file           : pe43xx.h* @author         : Silencecmsj* @brief          : None* @attention      : None* @date           : 2024/7/31*******************************************************************************                             _ooOoo_*                            o8888888o*                            88" . "88*                            (| -_- |)*                            O\  =  /O*                         ____/`---'\____*                       .'  \\|     |//  `.*                      /  \\|||  :  |||//  \*                     /  _||||| -:- |||||-  \*                     |   | \\\  -  /// |   |*                     | \_|  ''\---/''  |   |*                     \  .-\__  `-`  ___/-. /*                   ___`. .'  /--.--\  `. . __*                ."" '<  `.___\_<|>_/___.'  >'"".*               | | :  `- \`.;`\ _ /`;.`/ - ` : | |*               \  \ `-.   \_ __\ /__ _/   .-` /  /*          ======`-.____`-.___\_____/___.-`____.-'======*                             `=---='*          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*******************************************************************************/#ifndef TEST_PE43XX_H
#define TEST_PE43XX_H#include "main.h"
// Define types of sensors.
#define PE4302 02
// untested as I don't own these
#define PE4306 06
#define PE4312 12void PE43xx_f( uint8_t type);
void begin();
int setLevel(float level);
void _writeLevel();
float getLevel();
float getMax();
float getStep();void PE43xx_init(uint8_t type,float level);
void PE43xx_changelevel(float level);#endif //TEST_PE43XX_H

投降了，太久不用全忘光了，印象中这个模块配置相当简单，到手即用的程度，感兴趣的将上述代码喂给AI问问用法吧。