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> Hello, > > thank you for your answer. > Unfortunately I have no application board and no lcd display. > > Greetings > Gaston Hello again, well - this should not be a hindrance. Important are only the I2C routines wich take care of clock stretching. Its worth a try and as far as I can see by theorie, it should work, as long as no other tricky features are used with the RN-Motor (I mentioned that in a former post). Below I shortended the code to make the essentials clearer. What's missing are I2C read routines, but the fundamental functions of the RN-Motor can be accessed by writing only. So ein Mist --- jetzt hab ich das auf Englisch getippt und bin zu faul nochmal zu übersetzen. Hoffe es ist auch so verständlich. Grüße Henrik > > '*************** INS and OUTS **************' > > define sda port[4] > > define scl port[5] > > define lcd_backlight_off port[16] > > '*******************************************' > > '**************** VARIABLES ****************' > > define i2c_nack bit[1] > > define i2c_last bit[2] > > define i2c_nack_count byte[2] > > define i2c_byte byte[3] > > define i2c_out_bit bit[24] > > define i2c_in_bit bit[17] > > define loop byte[4] > > > > define address byte[5] > > '*******************************************' > > ... Hier steht Dein Programm ... ... ... > > '*************** SUBROUTINES ***************' > > > > #start_i2c > > sda = 0 : scl = 0 > > return > ----- > > #stop_i2c > > sda = 0 : deact scl : deact sda > > return > ----- > > #write_byte_i2c > > for loop = 1 to 8 > > sda = i2c_out_bit > > deact scl > > #write_byte_i2c_clock_stretch > > if not scl then goto write_byte_i2c_clock_stretch > > scl = 0 > > i2c_byte = i2c_byte shl 1 > > next > > deact sda > > deact scl > > #write_byte_i2c_ack_clock_stretch > > if not scl then goto write_byte_i2c_ack_clock_stretch > > i2c_nack = sda > > scl = 0 > > if i2c_nack then goto i2c_error > > i2c_nack_count = 0 > > return > > #i2c_error > > i2c_nack_count = i2c_nack_count + 1 > > goto stop_i2c Meine Homepage: http://www.henrik-reimers.de/control/ |
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Re: RN-Motor an I2C-Bus (von Gaston - 3.07.2005 10:38)