from string import digits
-## dictionary of properties of signals that are supported.
-dictionary={
- "uart_rx" :"input",
- "uart_tx" :"output",
- "spi_sclk" :"output",
- "spi_mosi" :"output",
- "spi_ss" :"output",
- "spi_miso" :"input",
- "twi_sda" :"inout",
- "twi_scl" :"inout"
+# dictionary of properties of signals that are supported.
+dictionary = {
+ "uart_rx" : "input",
+ "uart_tx" : "output",
+ "spi_sclk" : "output",
+ "spi_mosi" : "output",
+ "spi_ss" : "output",
+ "spi_miso" : "input",
+ "twi_sda" : "inout",
+ "twi_scl" : "inout"
}
-
-########### common bsv templates ############
-assign_cell='''cell{0}_out=wrmux{0}=={1}?'''
-# first argument is the io-cell number being assigned.
-# second argument is the mux value.
+
+# ============== common bsv templates ============ #
+assign_cell = '''cell{0}_out=wrmux{0}=={1}?'''
+# first argument is the io-cell number being assigned.
+# second argument is the mux value.
# Third argument is the signal from the pinmap file
-input_wire='''
- rule assign_{2}_on_cell{0}(wrmux{0}=={1});
- {2}<=cell{0}_in;
- endrule
+input_wire = '''
+ rule assign_{2}_on_cell{0}(wrmux{0}=={1});
+ {2}<=cell{0}_in;
+ endrule
'''
-#########################################
-pinmux=''' '''
-pinmap_file=open("./pinmap.txt","r")
-dedicated=False
-for lineno,line in enumerate(pinmap_file):
- line1=line.split()
- if("muxed" in line):
- dedicated=False
- elif("dedicated" in line):
- dedicated=True
- ############################## Logic for muxed pins ##############################
- if(len(line1)>1 and not(dedicated)):
- if(lineno>N_IO):
- print("ERROR: Parameter N_IO("+str(N_IO)+") is less than the pin number in line: "+str(lineno)+" of pinmap.txt")
- exit(1)
- ######## Mux each generic IO cell with the mapping######
- # provided in the pinmap file
- pinmux=pinmux+" cell"+str(line1[0])+"_out="
- i=0
- while(i<len(line1)-1):
- pinmux=pinmux+"wrmux"+str(line1[0])+"=="+str(i)+"?"+line1[i+1]+"_io:"
- if(i+2==len(line1)-1):
- pinmux=pinmux+line1[i+2]+"_io"
- i=i+2
- else:
- i=i+1
- pinmux=pinmux+";\n"
- ########################################################
-
- ###### check each cell if "peripheral input/inout" then assign its wire ########
- ## Here we check the direction of each signal in the dictionary.
- ## We choose to keep the dictionary within the code and not user-input
- ## since the interfaces are always standard and cannot change from user-to-user.
- ## Plus this also reduces human-error as well :)
- for i in range(0,len(line1)-1):
- digits = str.maketrans(dict.fromkeys('0123456789'))
- temp=line1[i+1].translate(digits)
- x=dictionary.get(temp);
- if(x==None):
- print("Error: The signal : "+str(line1[i+1])+" in lineno: "+str(lineno)+"of pinmap.txt is not present in the current dictionary.\nSoln: Either update the dictionary or fix typo.")
- exit(1)
- if(x=="input"):
- pinmux=pinmux+input_wire.format(line1[0],i,"wr"+line1[i+1])+"\n"
- elif(x=="inout"):
- pinmux=pinmux+input_wire.format(line1[0],i,"wr"+line1[i+1]+"_in")+"\n"
- ################################################################################
+# ============================================================
+pinmux = ''' '''
+pinmap_file = open("./pinmap.txt", "r")
+dedicated = False
+for lineno, line in enumerate(pinmap_file):
+ line1 = line.split()
+ if("muxed" in line):
+ dedicated = False
+ elif("dedicated" in line):
+ dedicated = True
+ # ==== Logic for muxed pins ==== #
+ if(len(line1) > 1 and not(dedicated)):
+ if(lineno > N_IO):
+ print(
+ "ERROR: Parameter N_IO(" +
+ str(N_IO) +
+ ") is less than the pin number in line: " +
+ str(lineno) +
+ " of pinmap.txt")
+ exit(1)
+ # ==== Mux each generic IO cell with the mapping ===== #
+ # provided in the pinmap file
+ pinmux = pinmux + " cell" + str(line1[0]) + "_out="
+ i = 0
+ while(i < len(line1) - 1):
+ pinmux = pinmux + "wrmux" + \
+ str(line1[0]) + "==" + str(i) + "?" + line1[i + 1] + "_io:"
+ if(i + 2 == len(line1) - 1):
+ pinmux = pinmux + line1[i + 2] + "_io"
+ i = i + 2
+ else:
+ i = i + 1
+ pinmux = pinmux + ";\n"
+ # ======================================================== #
- ############################## Logic for dedicated pins ##############################
- elif(len(line1)>1 and dedicated):
- pinmux=pinmux+" cell"+str(line1[0])+"_out="+line1[1]+"_io;\n"
-###########################################
+ # check each cell if "peripheral input/inout" then assign its wire
+ # Here we check the direction of each signal in the dictionary.
+ # We choose to keep the dictionary within the code and not user-input
+ # since the interfaces are always standard and cannot change from
+ # user-to-user. Plus this also reduces human-error as well :)
+ for i in range(0, len(line1) - 1):
+ digits = str.maketrans(dict.fromkeys('0123456789'))
+ temp = line1[i + 1].translate(digits)
+ x = dictionary.get(temp)
+ if(x is None):
+ print(
+ "Error: The signal : " +
+ str(line1[i + 1]) +
+ " in lineno: " +
+ str(lineno) + "of pinmap.txt isn't present in the \
+ current dictionary.\nUpdate dictionary or fix-typo.")
+ exit(1)
+ if(x == "input"):
+ pinmux = pinmux + \
+ input_wire.format(line1[0], i, "wr" + line1[i + 1]) + "\n"
+ elif(x == "inout"):
+ pinmux = pinmux + \
+ input_wire.format(line1[0], i, "wr" + line1[i + 1] +
+ "_in") + "\n"
+ # ============================================================ #
+ # ================== Logic for dedicated pins ========= #
+ elif(len(line1) > 1 and dedicated):
+ pinmux = pinmux + " cell" + \
+ str(line1[0]) + "_out=" + line1[1] + "_io;\n"
+ # ======================================================= #
+# =========================================================
projects / pinmux.git / blobdiff