106 lines
2.4 KiB
C++
106 lines
2.4 KiB
C++
#include "PowerMeter.h"
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PowerMeter* PowerMeter::uniqueInstanceMach = nullptr;
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PowerMeter* PowerMeter::uniqueInstanceLight = nullptr;
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PowerMeter* PowerMeter::MachInstance()
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{
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if (!uniqueInstanceMach) {
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uniqueInstanceMach = new PowerMeter();
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}
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return uniqueInstanceMach;
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}
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PowerMeter* PowerMeter::LightInstance()
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{
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if (!uniqueInstanceLight) {
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uniqueInstanceLight = new PowerMeter();
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}
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return uniqueInstanceLight;
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}
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PowerMeter::PowerMeter()
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{
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}
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PowerMeter::~PowerMeter()
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{
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}
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//int PowerMeter::GetValue(char *data, unsigned short data_len,float * Value)
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int PowerMeter::GetValue(float * Value)
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{
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int ret;
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char cmd[50];
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char revBuf[50] = {0};
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::EnterCriticalSection(&mCsRead);
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memset(revData,0,4096);
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sprintf_s(cmd, "$POW\r\n");
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ret = SendCmd(reinterpret_cast<char*>(cmd), strlen(cmd) ,reinterpret_cast<unsigned char*>(revData), &revDataLen);
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if (ret == 0)
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{
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//revData[strlen(revData) - 2] = 0;
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memcpy_s(revBuf,50,revData,strlen(revData));
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for (int i=0;i<(int)strlen(revData);i++)
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{
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if ((revData[i] == '\r') || (revData[i] == '\n'))
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revBuf[i] = 0;
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}
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*Value = convert(revBuf);
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}
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::LeaveCriticalSection(&mCsRead);
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return ret;
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}
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float PowerMeter::convert(char *num)
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{
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//printf("开始转换%s\n", num);
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float num1 = 0.0, num2 = 0.0;
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int sign = 1;
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int exp = 1, cishu = 0;
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//表示e后面是正号还是负号，正号为1，负号为-1
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//cishu表示是几次饭
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char *p = num;
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if (*p == '-') {
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sign = -1;
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p++;
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//如果小数是复数
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}
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while (isdigit(*p)) {
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num1 = num1 * 10 + *p - '0';
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p++;
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//小数点前面的部分
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}
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//printf("num1:%f\n", num1);
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float i = 0.1;
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p++;
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while (isdigit(*p)) {
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num2 += i * (*p - '0');
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i *= 0.1;
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p++;
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}
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//小数点后面的部分
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//printf("num2:%f\n", num2);
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if (*p == 'e' || *p == 'E')
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p++;
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if (*p == '-') {
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exp = -1;
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p++;
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}
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else if (*p == '+')p++;
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while (*p != '\0') {
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cishu = cishu * 10 + *p - '0';
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p++;
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}
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//printf("cishu:%d\n", cishu);
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float result = sign * (num1 + num2);
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if (exp == -1) i = 0.1;
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else i = 10;
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for (int j = 0; j < cishu; j++) result *= i;
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return result;
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}
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