135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
//
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// Created by Timothy Yin on 2025/3/29.
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//
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#include "IM1281B.h"
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uint8_t IM1281B_ID = 0x01;
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uint8_t IM_TxBuf[8] = {0};
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uint8_t IM_RxBuf[40] = {0};
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uint8_t IM_ReadFlag = 0;
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uint8_t IM_RecvDone = 0;
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uint8_t IM_RecvLen = 0;
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uint32_t IM_Volt = 0;
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uint32_t IM_Curr = 0;
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uint32_t IM_Power = 0;
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uint32_t IM_Energy = 0;
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uint32_t IM_PF = 0;
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uint32_t IM_CO2 = 0;
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unsigned int Calc_CRC(const unsigned char crc_buf, unsigned int crc)
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{
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crc = crc ^ crc_buf;
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for (unsigned char i = 0; i < 8; i++)
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{
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const unsigned char chk = crc & 1;
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crc = crc >> 1;
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crc = crc & 0x7fff;
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if (chk == 1)
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crc = crc ^ 0xa001;
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crc = crc & 0xffff;
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}
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return crc;
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}
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unsigned int Check_CRC(const unsigned char* buf, const unsigned char len)
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{
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unsigned int crc = 0xFFFF;
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for (unsigned int i = 0; i < len; i++)
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{
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crc = Calc_CRC(*buf, crc);
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buf++;
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}
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const unsigned char MSB = crc % 256;
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const unsigned char LSB = crc / 256;
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crc = (unsigned int)MSB << 8 | LSB;
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return crc;
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}
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void IM_Read(void)
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{
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if (IM_ReadFlag == 1) // 到时间抄读模块，抄读间隔 1 秒钟(或其他)
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{
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union crc_data
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{
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unsigned int word16;
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unsigned char byte[2];
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} new_crc;
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IM_ReadFlag = 0;
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IM_TxBuf[0] = IM1281B_ID; //模块的 ID 号，默认 ID 为 0x01
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IM_TxBuf[1] = 0x03;
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IM_TxBuf[2] = 0x00;
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IM_TxBuf[3] = 0x48;
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IM_TxBuf[4] = 0x00;
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IM_TxBuf[5] = 0x06;
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new_crc.word16 = Check_CRC(IM_TxBuf, 6);
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IM_TxBuf[6] = new_crc.byte[1]; //CRC 效验低字节在前
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IM_TxBuf[7] = new_crc.byte[0];
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for (unsigned int i = 0; i < 8; i++)
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{
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HAL_UART_Transmit(&huart1, &IM_TxBuf[i], 1, HAL_MAX_DELAY);
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}
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}
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}
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void IM_Analyze(void)
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{
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if (IM_RecvDone == 1) //接收完成
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{
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IM_RecvDone = 0;
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if (IM_RxBuf[0] == IM1281B_ID) //确认 ID 正确
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{
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union crc_data
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{
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unsigned int word16;
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unsigned char byte[2];
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} new_crc;
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new_crc.word16 = Check_CRC(IM_RxBuf, IM_RecvLen - 2); //IM_RecvLen 是接收数据总长度
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if (new_crc.byte[0] == IM_RxBuf[IM_RecvLen - 1] && new_crc.byte[1] == IM_RxBuf[IM_RecvLen - 2])
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{
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// 01 03 18 00 23 81 d8 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 e7 00 00 00 00 84 5c
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IM_Volt =
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(uint32_t)IM_RxBuf[3] << 24
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| (uint32_t)IM_RxBuf[4] << 16
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| (uint32_t)IM_RxBuf[5] << 8
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| IM_RxBuf[6];
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IM_Curr =
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(uint32_t)IM_RxBuf[7] << 24
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| (uint32_t)IM_RxBuf[8] << 16
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| (uint32_t)IM_RxBuf[9] << 8
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| IM_RxBuf[10];
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IM_Power =
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(uint32_t)IM_RxBuf[11] << 24
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| (uint32_t)IM_RxBuf[12] << 16
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| (uint32_t)IM_RxBuf[13] << 8
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| IM_RxBuf[14];
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IM_Energy =
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(uint32_t)IM_RxBuf[15] << 24
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| (uint32_t)IM_RxBuf[16] << 16
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| (uint32_t)IM_RxBuf[17] << 8
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| IM_RxBuf[18];
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IM_PF =
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(uint32_t)IM_RxBuf[19] << 24
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| (uint32_t)IM_RxBuf[20] << 16
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| (uint32_t)IM_RxBuf[21] << 8
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| IM_RxBuf[22];
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IM_CO2 =
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(uint32_t)IM_RxBuf[23] << 24
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| (uint32_t)IM_RxBuf[24] << 16
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| (uint32_t)IM_RxBuf[25] << 8
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| IM_RxBuf[26];
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}
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else
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{
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IM_Volt = 199;
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}
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}
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else
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{
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IM_Volt = 99;
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}
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}
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}
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