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Re: Ansteuerung pcf8591 Kategorie: Programmierung Basic (von acer - 10.02.2006 19:50)

Als Antwort auf Re: Ansteuerung pcf8591 von Windt H.J. - 10.02.2006 19:37

acer nutzt:  CC1-M-Unit V1.2/2.0

Hi H.J. I'm impressed, will try it out as soon as possible and tell you if it works (probably on Tuesday)! Thank you Greeez, acer > Hello, > Your connections look good. > I have read through the datasheet of the PCF8591 and just maybe I can help you. > I have written a test program according to the data sheet. > I canÂ’t test it but maybe it will work. > Let me know how it works out. > Greetings, > H.J. Windt > > '* PCF8591 Example b1.0 for CCIUM2.01 with CCIAB2.0 *' > '**************** I/O PORTS ****************' > define lcd_backlight_off port[16] > '*******************************************' > '**************** A/D PORTS ****************' > > '*******************************************' > '**************** D/A PORTS ****************' > > '*******************************************' > '**************** VARIABLES ****************' > define configuration byte[1] > define iic_nack bit[7] > define iic_nack_count byte[2] > define pcf8591_i2c_address byte[3] > define pcf8591_ad0 byte[4] > define pcf8591_ad1 byte[5] > define pcf8591_ad2 byte[6] > define pcf8591_ad3 byte[7] > '*******************************************' > '**************** CONSTANTS ****************' > > '*******************************************' > '****************** SETUP ******************' > put 0 : print"#ON_LCD#";"#INIT#";"#CLR#";"#OFF#"; : lcd_backlight_off = off > '*******************************************' > '***************** PROGRAM *****************' > #start > pcf8591_i2c_address = 144 > gosub get_pcf8591_ad_data > print"#ON_LCD#"; > print"#L101#";"ad0=";pcf8591_ad0;" ad1=";pcf8591_ad1;"    "; > print"#L201#";"ad2=";pcf8591_ad2;" ad3=";pcf8591_ad3;"    "; > print"#OFF#"; > goto start > '*******************************************' > '*************** SUBROUTINES ***************' > #get_pcf8591_ad_data > print"#ON_IIC#"; > print"#START#"; > put pcf8591_i2c_address > put &b01000100 > print"#STOP#"; > print"#OFF#"; > gosub check_iic_nack > if iic_nack then goto pass_reading_pcf8591_data > print"#ON_IIC#"; > print"#START#"; > put pcf8591_i2c_address + 1 > get pcf8591_ad0 'start conversion of ad1' > get pcf8591_ad1 'start conversion of ad2' > get pcf8591_ad2 'start conversion of ad3' > get pcf8591_ad3 'start conversion of ad0' > get pcf8591_ad0 'read ad0' > get pcf8591_ad1 'read ad1' > get pcf8591_ad2 'read ad2' > get pcf8591_ad3 'read ad3' > print"#STOP#"; > print"#OFF#"; > gosub check_iic_nack > #pass_reading_pcf8591_data > if iic_nack_count > 3 then gosub no_ack_from_pcf8591 > if iic_nack then goto get_pcf8591_ad_data > return > > #check_iic_nack > print"#ON_CONFIG#"; > get configuration > if not iic_nack then goto pass_iic_nack_clear > iic_nack = 0 > put configuration > iic_nack = 1 > iic_nack_count = iic_nack_count + 1 > print"#OFF#"; > return > #pass_iic_nack_clear > iic_nack_count = 0 > print"#OFF#"; > return > '*******************************************' > '******* INITIALIZATION SUBROUTINES ********' > > '*******************************************' > '********* CALIBRATION SUBROUTINES *********' > > '*******************************************' > '****************** DATA *******************' > > '*******************************************' > '************* ERROR MESSAGES **************' > #no_ack_from_pcf8591 > beep 1,1,1:beep 10,1,1:beep 1,1,1:beep 10,1,1 > print"#ON_LCD#"; > print"#CLR#"; > print"IIC ERROR:"; > print"#L201#"; > print"PCF8591 NACK"; > pause 300 > print"#CLR#"; > print"#OFF#"; > return > '*******************************************'

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