INFO - FAQ - CC2-Forum - CCPro-Forum |
Please, who can help me to program a PCF8574. What is wrong in the program given below. I like to turn a stepper connnected to P4-P7 (of the PCF8574) when a switch) connected to P3 is depressed. P0/P3 are connected with a pull-up to 5V . By pressing the switch P3 will be connected with a pull-up to 5 V define .......etc SDA=on SCL=on zaehler=&B00001000 #loop 'reading ON/OFF of P3 gosub start datenW=65 gosub I2C_write gosub I2C_read gosub Noack gosub Stop if datenR=&B00001111 then gosub motor else goto loop goto loop #motor zaehler =zaehler shl 1 gosub start datenW=64 gosub I2C_write datenW=Zaehler gosub I2C_write gosub stop if zaehler=&B10000000 then zaehler=&B00001000 return #start please refer to [1] #stop please refer to [1] #I2C_write please refer to [1] read instead of daten : datenW #I2C_read please refer to [1] read instead of daten: datenR #Ack please refer to [1] #Noack please refer to [1] [1] Messen, Steueren, Regeln mit dem C-Control/BASIC System von Kainka (page 163 u.w.) thank you very much |
Antwort schreiben |