Skip to content
Snippets Groups Projects
Select Git revision
  • d10296252e93269b5388b57333c6eb119f4399fa
  • master default protected
  • dither_on_off_disabled
  • yocto
  • pypcc2
  • pypcc3
  • 2020-12-07-the_only_working_copy
  • v2.1
  • v2.0
  • v1.0
  • v0.9
  • Working-RCU_ADC,ID
  • 2020-12-11-Holiday_Season_release
13 results

SPIbitbang2.py

Blame
  • Code owners
    Assign users and groups as approvers for specific file changes. Learn more.
    SPIbitbang2.py 2.21 KiB
    from I2Cdevices import *;
    import numpy as np
    import logging
    
    class SPIbitbang2(I2Cdevices):
        def I2CSet(self,dev,reg,value,I2Ccallback,width=8,bitoffset=0):
              SPI=Find(self.D['I2C_devices'],'dev_name',dev)
              Reg=Find(SPI['dev_registers'],'reg_name',reg)  
              reg_address=(Reg['reg_addr'] if Reg else int(reg))
              SetBit=I2Ccallback
    
    #          dev_rw    = 0x00 # 0 for write, 1 for read
    #          data2 =  ( reg_address << 9 ) + ( dev_rw << 8 ) + value[0]
              data2 =  ( reg_address << 9 ) + value[0]
              
              bit_array = "{0:{fill}16b}".format(data2, fill='0')
          #    logging.info(bit_array)
              SetBit('CS',0) #enable
              for bit in bit_array:
                  SetBit('SDI',int(bit)) 
                  SetBit('CLK',1) 
                  SetBit('CLK',0) 
              SetBit('CS',1) 
              return True;
              
    
        def I2CGet(self,dev,reg,value,I2Ccallback,width=8,bitoffset=0):
              
              SPI=Find(self.D['I2C_devices'],'dev_name',dev)
              Reg=Find(SPI['dev_registers'],'reg_name',reg)  
              reg_address=(Reg['reg_addr'] if Reg else int(reg))
    #          logging.info(ADC_reg_address,CS,SDIOdir,SDI,SDO,CLK)
              SetBit=I2Ccallback
              ADC_bytes = 0x00
    
    #          ADC_rw    = 0x01 # 0 for write, 1 for read
              data =  ( reg_address << 7 ) +  1
            
              SetBit('CS',0) #enable
    
              bit_array = "{0:{fill}8b}".format(data, fill='0')
              for bit in bit_array:
                  SetBit('SDI',int(bit))
                  SetBit('CLK',1)
                  SetBit('CLK',0)
    
    #          SetBit('CS',1) #disable
    
              #    logging.info("read byte")
    #          SetBit('SDIOdir',1) #inpute
    #          SetBit('CS',0) #enable
              a=[0]
              read_bit = ''
              for cnt in range(8*(ADC_bytes+1)):
                  ret_value=SetBit('SDO',0,True)
                  read_bit += str(ret_value)
                  SetBit('CLK',1)
                  SetBit('CLK',0) #read after falling edge
              SetBit('CS',1) #disable
    #          SetBit(SDO,1) 
    #          SetBit(CLK,1) 
    #          logging.info(read_bit)
              stri = "Read back data is: {0:2x} ".format(int(read_bit, 2))
              logging.info(stri)
              value[0]=int(read_bit, 2)
              return True;