'************************************************************************ '* Title : Humidity and Temperature with SMT10 * '* Last Updated : 2013/08/06 * '* Micro Contoroler : ATMEGA32 * '* Clock frequency : 1.000000 MHz * '* Compiler : Bascom AVR v1.11.9.0 * '************************************************************************ $regfile = "m32def.dat" $crystal = 1000000 Config Lcdpin = Pin , Rs = Pina.0 , E = Pina.2 , Db4 = Pina.4 , Db5 = Pina.5 , Db6 = Pina.6 , Db7 = Pina.7 Config Lcd = 16 * 2 Cursor Off Cls Dim I As Byte Dim Z As Single Dim Data_byte As Byte Dim Data_msb As Byte Dim Data_lsb As Byte Dim Data_word As Word Dim Crc As Byte Dim Temp As Single Dim Rh_liner As Single Dim Command As Byte Sck Alias Portc.1 Dataout Alias Portc.0 Datain Alias Pinc.0 Config Portc.1 = Output Config Portc.0 = Output Gosub Signal_reset : Waitms 10 Do Command = &B00000101 : Gosub Get_sht10 Gosub Calcula_rh_liner_12bit Command = &B00000011 : Gosub Get_sht10 Gosub Calcula_temp_14bit Gosub Display_lcd Wait 1 Loop End '******************************************* Status_register_write: Gosub Signal_start Command = &B00000110 : Shiftout Dataout , Sck , Command , 1 Gosub Signal_ack Command = &B00000000 : Shiftout Dataout , Sck , Command , 1 Gosub Signal_ack Return '******************************************* Status_register_read: Gosub Signal_start Command = &B00000111 Shiftout Dataout , Sck , Command , 1 Gosub Signal_ack Gosub Read_byte : Data_msb = Data_byte Gosub Signal_ack Gosub Read_byte : Crc = Data_byte Print "Status Register=" ; Data_msb Print "Checksum=" ; Crc Print Return '******************************************* Setting_default: Gosub Signal_start Command = &B00011110 : Shiftout Dataout , Sck , Command , 1 Gosub Signal_ack Waitms 100 Return '******************************************* Get_sht10: Gosub Signal_start Gosub Send_command Gosub Signal_ack Gosub Wait_for_data_ready Gosub Read_byte : Data_msb = Data_byte Gosub Signal_ack Gosub Read_byte : Data_lsb = Data_byte Gosub Signal_ack Gosub Read_byte : Crc = Data_byte Gosub Signal_end Data_msb = Data_msb And &B00111111 Data_word = Makeint(data_lsb , Data_msb) Return '******************************************* Signal_reset: Config Portc.1 = Output ': Portc.1 = 1 Config Portc.0 = Output ': Portc.0 = 1 Reset Sck : Set Dataout : Waitus 1 For I = 1 To 9 Set Sck : : Waitus 1 : Reset Dataout : Waitus 1 Next I Return '******************************************* Signal_start: Config Portc.1 = Output ': Portc.1 = 1 Config Portc.0 = Output ': Portc.0 = 1 Reset Sck : Set Dataout : Waitus 1 Set Sck : : Waitus 1 : Reset Dataout : Waitus 1 Reset Sck : Waitus 1 Set Sck : Waitus 1 Set Dataout : : Waitus 1 Reset Sck : Waitus 1 Crc = 0 Return '******************************************* Send_command: Config Portc.1 = Output : Portc.1 = 0 Config Portc.0 = Output : Portc.0 = 0 Shiftout Dataout , Sck , Command , 1 Return '******************************************* Wait_for_data_ready: Config Portc.1 = Output ': Portc.1 = 0 Config Portc.0 = Input ': Portc.0 = 0 Set Dataout For I = 1 To 255 If Dataout = 0 Then Exit For Waitms 1 Next Return '******************************************* Read_byte: Config Portc.1 = Output : Portc.1 = 0 Config Portc.0 = Input : Portc.0 = 1 Shiftin Datain , Sck , Data_byte , 1 Return '******************************************* Signal_ack: Config Portc.1 = Output ': Portc.1 = 0 Config Portc.0 = Output ': Portc.0 = 0 Reset Dataout : Reset Sck Set Sck : Waitus 1 Reset Sck Return '******************************************* Signal_end: Config Portc.1 = Output ': Portc.1 = 1 Config Portc.0 = Output ': Portc.0 = 1 Set Dataout : Waitus 1 Set Sck : Waitus 1 Reset Sck : Waitus 1 Return '******************************************* Calcula_rh_liner_12bit: Rh_liner = Data_word * Data_word Rh_liner = Rh_liner * -0.0000015955 Z = 0.0367 * Data_word Rh_liner = Rh_liner + Z Rh_liner = Rh_liner - 2.0468 Return '******************************************* Calcula_temp_14bit: Temp = 0.01 * Data_word Temp = Temp - 40.1 Return '******************************************* Display_lcd: Deflcdchar 0 , 7 , 5 , 7 , 32 , 32 , 32 , 32 , 32 Locate 1 , 1 : Lcd "RH: " ; Fusing(rh_liner , "#.#") ; "% " Locate 2 , 1 : Lcd "Temp: " ; Fusing(temp , "#.#") ; Chr(0) ; "C " Return
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