src/bsv/peripheral_gen/twi.py

   1 from bsv.peripheral_gen.base import PBase
   2
   3
   4 class twi(PBase):
   5
   6     def slowimport(self):
   7         return "import I2C_top           :: *;"
   8
   9     def irq_name(self):
  10         return "twi{0}_isint"
  11
  12     def slowifdecl(self):
  13         return "interface I2C_out twi{0}_out;\n" + \
  14                "method Bit#(1) %s;" % self.irq_name()
  15
  16     def num_axi_regs32(self):
  17         return 8
  18
  19     def mkslow_peripheral(self, size=0):
  20         return "I2C_IFC twi{0} <- mkI2CController();"
  21
  22     def _mk_connection(self, name=None, count=0):
  23         return "twi{0}.slave_i2c_axi"
  24
  25     def pinname_out(self, pname):
  26         return {'sda': 'out.sda_out',
  27                 'scl': 'out.scl_out'}.get(pname, '')
  28
  29     def pinname_in(self, pname):
  30         return {'sda': 'out.sda_in',
  31                 'scl': 'out.scl_in'}.get(pname, '')
  32
  33     def pinname_outen(self, pname):
  34         return {'sda': 'out.sda_out_en',
  35                 'scl': 'out.scl_out_en'}.get(pname, '')
  36
  37     def num_irqs(self):
  38         return 3
  39
  40     def plic_object(self, pname, idx):
  41         return ["{0}.isint()",
  42                 "{0}.timerint()",
  43                 "{0}.isber()"
  44                 ][idx].format(pname)
  45
  46     def mk_ext_ifacedef(self, iname, inum):
  47         name = self.get_iname(inum)
  48         return "method {0}_isint = {0}.isint;".format(name)
  49
  50     def slowifdeclmux(self, name, inum):
  51         sname = self.get_iname(inum)
  52         return "method Bit#(1) %s_isint;" % sname