每次初始化都必须设置模式，在热启动和冷启动的情况下都能使用
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07fcb61353
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@ -102,27 +102,31 @@ typedef union {
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SHT30::SHT30()
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{
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IIC = nullptr;
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Address = 0x44; // ADDR=VSS
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IIC = nullptr;
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Address = 0x44; // ADDR=VSS
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//Address = 0x45; // ADDR=VDD
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Pwr = nullptr;
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Pwr = nullptr;
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Mode = 2;
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Freq = 5;
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Repeat = 2;
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Mode = 2;
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Freq = 5;
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Repeat = 2;
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Opened = false;
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}
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SHT30::~SHT30()
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{
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if(Pwr) *Pwr = false;
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if (Pwr) *Pwr = false;
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delete IIC;
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IIC = nullptr;
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}
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void SHT30::Init()
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bool SHT30::Open()
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{
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if (Opened) return true;
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#if DEBUG
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debug_printf("\r\nSHT30::Init Addr=0x%02X ", Address);
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switch (Mode)
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@ -154,13 +158,13 @@ void SHT30::Init()
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debug_printf("\r\n");
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#endif
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IIC->SubWidth = 2;
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IIC->Address = Address << 1;
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IIC->Retry = 2;
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IIC->SubWidth = 2;
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IIC->Address = Address << 1;
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IIC->Retry = 2;
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if(Pwr) *Pwr = true;
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if (Pwr) *Pwr = true;
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bool rs = CheckStatus();
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bool rs = CheckStatus();
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/*
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SHT30三种采集数据方式：
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@ -171,21 +175,27 @@ void SHT30::Init()
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//Read4(CMD_MEAS_CLOCKSTR_H);
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//Read4(CMD_MEAS_POLLING_H);
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//Write(CMD_MEAS_PERI_1_H); // 高精度重复读取，每秒一次
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if(rs) SetMode();
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//if(rs)
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// 每次初始化都必须设置模式，在热启动和冷启动的情况下都能使用
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SetMode();
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return Opened = true;
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}
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uint SHT30::ReadSerialNumber() const
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uint SHT30::ReadSerialNumber()
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{
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return Read4(CMD_READ_SERIALNBR);
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}
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ushort SHT30::ReadStatus() const
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ushort SHT30::ReadStatus()
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{
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return Read2(CMD_READ_STATUS);
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}
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bool SHT30::Read(ushort& temp, ushort& humi)
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{
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if (!Open()) return false;
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/*
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SHT30三种采集数据方式：
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1，Stretch阻塞模式，发送命令后采集，需要长时间等待SCL拉高，才能发送读取头然后读取数据
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@ -198,10 +208,10 @@ bool SHT30::Read(ushort& temp, ushort& humi)
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//uint data = Read4(CMD_FETCH_DATA);
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uint data = Read4(GetMode());
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//tc.Show();
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if(!data)
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if (!data)
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{
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bool rs = CheckStatus();
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if(rs) SetMode();
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bool rs = CheckStatus();
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if (rs) SetMode();
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return false;
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}
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@ -220,20 +230,19 @@ bool SHT30::Read(ushort& temp, ushort& humi)
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bool SHT30::Write(ushort cmd)
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{
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//debug_printf("cmd=0x%04X \r\n", cmd);
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// 只有子操作码，没有数据
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bool rs = IIC->Write(cmd, ByteArray(0));
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if(!rs) debug_printf("SHT30::Write 0x%04X 失败\r\n", cmd);
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if (!rs) debug_printf("SHT30::Write 0x%04X 失败\r\n", cmd);
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return rs;
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}
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ushort SHT30::Read2(ushort cmd) const
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ushort SHT30::Read2(ushort cmd)
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{
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ByteArray rs(3);
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if(IIC->Read(cmd, rs) == 0)
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if (IIC->Read(cmd, rs) == 0)
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{
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Opened = false;
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debug_printf("SHT30::Read2 0x%04X 失败\r\n", cmd);
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return 0;
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}
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@ -242,13 +251,14 @@ ushort SHT30::Read2(ushort cmd) const
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}
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// 同时读取温湿度并校验Crc
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uint SHT30::Read4(ushort cmd) const
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uint SHT30::Read4(ushort cmd)
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{
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if(!cmd) return 0;
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if (!cmd) return 0;
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ByteArray rs(6);
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if(IIC->Read(cmd, rs) == 0)
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if (IIC->Read(cmd, rs) == 0)
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{
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Opened = false;
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debug_printf("SHT30::Read4 0x%04X 失败\r\n", cmd);
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return 0;
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}
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@ -263,15 +273,15 @@ uint SHT30::Read4(ushort cmd) const
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bool SHT30::CheckStatus()
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{
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ushort st = ReadStatus();
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ushort st = ReadStatus();
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regStatus rs;
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rs.u16 = st;
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rs.u16 = st;
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#if DEBUG
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if(st != 0)
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//if(st != 0)
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{
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uint sn = ReadSerialNumber();
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debug_printf("SNum=%p Status=0x%04X \r\n", sn, st);
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debug_printf("Status=0x%04X \r\n", st);
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uint sn = ReadSerialNumber();
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debug_printf("SerialNumber=%p Status=0x%04X \r\n", sn, st);
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//debug_printf("Status=0x%04X \r\n", st);
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//if(rs.bit.ResetDetected) debug_printf(" RstDet"); // ResetDetected
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//if(rs.bit.HeaterStatus) debug_printf(" HatSta"); // HeaterStatus
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//if(rs.bit.AlertPending) debug_printf(" AltPed"); // AlertPending
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@ -279,7 +289,7 @@ bool SHT30::CheckStatus()
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}
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#endif
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if(!rs.bit.ResetDetected) return false;
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if (!rs.bit.ResetDetected) return false;
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Write(CMD_CLEAR_STATUS);
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@ -288,47 +298,47 @@ bool SHT30::CheckStatus()
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void SHT30::SetMode()
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{
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if(Mode != 2) return;
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//if (Mode != 2) return;
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debug_printf("SHT30::SetMode Repeat=%d Freq=%d \r\n", Repeat, Freq);
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//Write(CMD_MEAS_PERI_1_H); // 高精度重复读取，每秒一次
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static ushort cmds[] = {
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static ushort cmds[] = {
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CMD_MEAS_PERI_05_H, CMD_MEAS_PERI_1_H, CMD_MEAS_PERI_2_H, CMD_MEAS_PERI_4_H, CMD_MEAS_PERI_10_H,
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CMD_MEAS_PERI_05_M, CMD_MEAS_PERI_1_M, CMD_MEAS_PERI_2_M, CMD_MEAS_PERI_4_M, CMD_MEAS_PERI_10_M,
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CMD_MEAS_PERI_05_L, CMD_MEAS_PERI_1_L, CMD_MEAS_PERI_2_L, CMD_MEAS_PERI_4_L, CMD_MEAS_PERI_10_L,
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};
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static byte maps[] = { 0, 1, 2, 0, 3, 0, 0, 0, 0, 0, 4 };
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static byte maps[] = { 0, 1, 2, 0, 3, 0, 0, 0, 0, 0, 4 };
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// 5/1/2/4/10 转为 0/1/2/3/4
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byte map = maps[Freq];
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ushort cmd = cmds[map + Repeat * 5];
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bool rs = Write(cmd);
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byte map = maps[Freq];
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ushort cmd = cmds[map + Repeat * 5];
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bool rs = Write(cmd);
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// 软重启
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if(!rs) rs = Write(CMD_SOFT_RESET);
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if (!rs) rs = Write(CMD_SOFT_RESET);
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// 硬重启
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if(!rs && Pwr) Pwr->Down(100);
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if (!rs && Pwr) Pwr->Down(100);
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}
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ushort SHT30::GetMode() const
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{
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static ushort cs[] = {CMD_MEAS_CLOCKSTR_L, CMD_MEAS_CLOCKSTR_M, CMD_MEAS_CLOCKSTR_H};
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static ushort ps[] = {CMD_MEAS_POLLING_L, CMD_MEAS_POLLING_M, CMD_MEAS_POLLING_H};
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switch(Mode)
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static ushort cs[] = { CMD_MEAS_CLOCKSTR_L, CMD_MEAS_CLOCKSTR_M, CMD_MEAS_CLOCKSTR_H };
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static ushort ps[] = { CMD_MEAS_POLLING_L, CMD_MEAS_POLLING_M, CMD_MEAS_POLLING_H };
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switch (Mode)
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{
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case 0:
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{
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if(Repeat < ArrayLength(cs)) return cs[Repeat];
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break;
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}
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case 1:
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{
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if(Repeat < ArrayLength(ps)) return ps[Repeat];
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break;
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}
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case 2:
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{
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return CMD_FETCH_DATA;
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}
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case 0:
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{
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if (Repeat < ArrayLength(cs)) return cs[Repeat];
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break;
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}
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case 1:
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{
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if (Repeat < ArrayLength(ps)) return ps[Repeat];
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break;
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}
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case 2:
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{
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return CMD_FETCH_DATA;
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}
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}
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return 0;
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@ -336,7 +346,7 @@ ushort SHT30::GetMode() const
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void SHT30::ChangePower(int level)
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{
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if(!level) Write(CMD_NO_SLEEP);
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if (!level) Write(CMD_NO_SLEEP);
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// 进入低功耗时，直接关闭
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//if(level) Close();
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}
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@ -18,12 +18,15 @@ public:
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OutputPort* Pwr; // 电源
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bool Opened;
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SHT30();
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virtual ~SHT30();
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void Init();
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uint ReadSerialNumber() const;
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ushort ReadStatus() const;
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bool Open();
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uint ReadSerialNumber();
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ushort ReadStatus();
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bool Read(ushort& temp, ushort& humi);
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// 电源等级变更（如进入低功耗模式）时调用
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@ -31,9 +34,9 @@ public:
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private:
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bool Write(ushort cmd);
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ushort Read2(ushort cmd) const;
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ushort Read2(ushort cmd);
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// 同时读取温湿度并校验Crc
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uint Read4(ushort cmd) const;
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uint Read4(ushort cmd);
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bool CheckStatus();
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void SetMode();
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