45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
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#include "McuNHN206ADrv.h"
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#include <string.h>
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#define MCU_NHN206A_DRV_DATA_ADDRESS 0x0000
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int McuHNH206ADrvGetValue(HNH206A_OBJ *BlueObj)
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{
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uint32_t tmp = 0;
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uint32_t tmp1 = 0;
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float tmp2 = 1.0f;
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int i = 0;
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uint16_t Crc16 = 0xffff;
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uint8_t wdata[8] = {0x06,0x03,0x00,0x00,0x00,0x04,0x00,0x00};
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uint8_t rdata[13] = {0};
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wdata[2] = MCU_NHN206A_DRV_DATA_ADDRESS & 0xff00;
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wdata[3] = MCU_NHN206A_DRV_DATA_ADDRESS & 0x00ff;
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BlueObj->Crc(wdata, 6, &Crc16);
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wdata[6] = (uint8_t)(Crc16 & 0x00ff);
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wdata[7] = (uint8_t)((Crc16 & 0xff00) >> 8);
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BlueObj->Nnh206aSend(wdata, sizeof(wdata));
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BlueObj->Nnh206aRecv(rdata, sizeof(rdata));
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Crc16 = 0xffff;
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BlueObj->Crc(rdata, 11, &Crc16);
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if (Crc16 != ((((uint16_t)rdata[12]) << 8) | rdata[11])) {
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return -1;
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}
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/* 获取氨氮 */
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tmp = ((uint16_t)rdata[3] << 8) | ((uint16_t)rdata[4]);
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tmp1 = ((uint16_t)rdata[5] << 8) | ((uint16_t)rdata[6]);
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for (i = 0; i < tmp1; i++) {
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tmp2 = tmp2 * 10;
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}
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BlueObj->Nhn = tmp / tmp2;
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/* 获取温度值 */
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tmp = ((uint16_t)rdata[7] << 8) | ((uint16_t)rdata[8]);
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tmp1 = ((uint16_t)rdata[9] << 8) | ((uint16_t)rdata[10]);
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tmp2 = 1.0f;
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for (i = 0; i < tmp1; i++) {
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tmp2 = tmp2 * 10;
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}
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BlueObj->Temp = tmp / tmp2;
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return 0;
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}
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