tcl/chip/atmel/at91/usarts.tcl

   1 # the DBGU and USARTs are 'almost' indentical'
   2 set DBGU_CR         [expr $AT91C_BASE_DBGU + 0x00000000]
   3 set DBGU_MR         [expr $AT91C_BASE_DBGU + 0x00000004]
   4 set DBGU_IER        [expr $AT91C_BASE_DBGU + 0x00000008]
   5 set DBGU_IDR        [expr $AT91C_BASE_DBGU + 0x0000000C]
   6 set DBGU_IMR        [expr $AT91C_BASE_DBGU + 0x00000010]
   7 set DBGU_CSR        [expr $AT91C_BASE_DBGU + 0x00000014]
   8 set DBGU_RHR        [expr $AT91C_BASE_DBGU + 0x00000018]
   9 set DBGU_THR        [expr $AT91C_BASE_DBGU + 0x0000001C]
  10 set DBGU_BRGR       [expr $AT91C_BASE_DBGU + 0x00000020]
  11 # no RTOR
  12 # no TTGR
  13 # no FIDI
  14 # no NER
  15 set DBGU_CIDR       [expr $AT91C_BASE_DBGU + 0x00000040]
  16 set DBGU_EXID       [expr $AT91C_BASE_DBGU + 0x00000044]
  17 set DBGU_FNTR       [expr $AT91C_BASE_DBGU + 0x00000048]
  18
  19
  20 set USx_CR           0x00000000
  21 set USx_MR           0x00000004
  22 set USx_IER          0x00000008
  23 set USx_IDR          0x0000000C
  24 set USx_IMR          0x00000010
  25 set USx_CSR          0x00000014
  26 set USx_RHR          0x00000018
  27 set USx_THR          0x0000001C
  28 set USx_BRGR         0x00000020
  29 set USx_RTOR         0x00000024
  30 set USx_TTGR         0x00000028
  31 set USx_FIDI         0x00000040
  32 set USx_NER          0x00000044
  33 set USx_IF           0x0000004C
  34
  35 # Create all the uarts that exist..
  36 # we blow up if there are >9
  37
  38
  39 proc show_mmr_USx_MR_helper { NAME ADDR VAL } {
  40     # First - just print it
  41
  42     set x [show_normalize_bitfield $VAL 3 0]
  43     if { $x == 0 } {
  44         echo "\tNormal operation"
  45     } else {
  46         echo [format "\tNon Normal operation mode: 0x%02x" $x]
  47     }
  48
  49     set x [show_normalize_bitfield $VAL 11 9]
  50     set s "unknown"
  51     switch -exact $x {
  52         0 { set s "Even" }
  53         1 { set s "Odd" }
  54         2 { set s "Force=0" }
  55         3 { set s "Force=1" }
  56         * {
  57             set $x [expr $x & 6]
  58             switch -exact $x {
  59                 4 { set s "None" }
  60                 6 { set s "Multidrop Mode" }
  61             }
  62         }
  63     }
  64     echo [format "\tParity: %s " $s]
  65
  66     set x [expr 5 + [show_normalize_bitfield $VAL 7 6]]
  67     echo [format "\tDatabits: %d" $x]
  68
  69     set x [show_normalize_bitfield $VAL 13 12]
  70     switch -exact $x {
  71         0 { echo "\tStop bits: 1" }
  72         1 { echo "\tStop bits: 1.5" }
  73         2 { echo "\tStop bits: 2" }
  74         3 { echo "\tStop bits: Illegal/Reserved" }
  75     }
  76 }
  77
  78 # For every possbile usart...
  79 foreach WHO { US0 US1 US2 US3 US4 US5 US6 US7 US8 US9 } {
  80     set n AT91C_BASE_[set WHO]
  81     set str ""
  82
  83     # Only if it exists on the chip
  84     if [ info exists $n ] {
  85         # Hence: $n - is like AT91C_BASE_USx
  86         # For every sub-register
  87         foreach REG {CR MR IER IDR IMR CSR RHR THR BRGR RTOR TTGR FIDI NER IF}  {
  88             # vn = variable name
  89             set vn [set WHO]_[set REG]
  90             # vn = USx_IER
  91             # vv = variable value
  92             set vv [expr $$n + [set USx_[set REG]]]
  93             # And VV is the address in memory of that register
  94
  95
  96             # make that VN a GLOBAL so others can find it
  97             global $vn
  98             set $vn $vv
  99
 100             # Create a command for this specific register.
 101             proc show_$vn { } "show_mmr32_reg $vn"
 102
 103             # Add this command to the Device(as a whole) command
 104             set str "$str\nshow_$vn"
 105         }
 106         # Now - create the DEVICE(as a whole) command
 107         set fn show_$WHO
 108         proc $fn { } $str
 109     }
 110 }
 111
 112 # The Debug Uart is special..
 113 set str ""
 114
 115
 116 # For every sub-register
 117 foreach REG {DBGU_CR DBGU_MR DBGU_IER DBGU_IDR DBGU_IMR
 118     DBGU_CSR DBGU_RHR DBGU_THR DBGU_BRGR DBGU_CIDR DBGU_EXID DBGU_FNTR} {
 119
 120     # Create a command for this specific register.
 121     proc show_$REG { } "show_mmr32_reg $REG"
 122
 123     # Add this command to the Device(as a whole) command
 124     set str "$str\nshow_$REG"
 125 }
 126
 127 # Now - create the DEVICE(as a whole) command
 128 proc show_DBGU { } $str
 129
 130 unset str
 131
 132 proc show_DBGU_MR_helper { NAME ADDR VAL } { show_mmr_USx_MR_helper $NAME $ADDR $VAL }
 133
 134
 135