fmcdio_vhdci_eem: add dirctl word computation functions

artiq/coredevice/fmcdio_vhdci_eem.py

@@ -4,3 +4,36 @@ eem_fmc_connections = {
     2: [17, 16, 24, 19, 20, 21, 22, 23],
     3: [18, 25, 26, 27, 28, 29, 30, 31],
 }
+
+
+def shiftreg_bits(eem, out_pins):
+    r = 0
+    for i in range(8):
+        if i in out_pins:
+            shift = eem_fmc_connections[eem][i]
+            r |= 1 << shift
+    return r
+
+
+dio_bank0_out_pins = set(range(4))
+dio_bank1_out_pins = set(range(4, 8))
+urukul_out_pins = {
+    0,       # clk
+    1,       # mosi
+    3, 4, 5, # cs_n
+    6,       # io_update
+    7,       # dds_reset
+}
+urukul_out_pins_aux = {
+    4,       # sw0
+    5,       # sw1
+    6,       # sw2
+    7,       # sw3
+}
+zotino_out_pins = {
+    0,       # clk
+    1,       # mosi
+    3, 4,    # cs_n
+    5,       # ldac_n
+    7,       # clr_n
+}