add generate_csr_locations

firmware/Makefile

@@ -8,3 +8,6 @@ clean:
 overlay.dts overlay.config: csr.json litex_json2dts_zephyr.py
 	# NOTE: Broken in LiteX 2022.4.
 	$(DEVICETREE_GEN_DIR)/litex_json2dts_zephyr.py --dts overlay.dts --config overlay.config csr.json
+
+pin_io.h: csr.json generate_csr_locations.py
+	python3 generate_csr_locations.py > pin_io.h

firmware/generate_csr_locations.py

@@ -0,0 +1,26 @@
+#!/usr/bin/python3
+import json
+
+reg_names = {
+        "adc" : ("conv", "sck", "sdo"),
+        "dac" : ("miso", "ctrl")
+}
+max_num = 8
+
+def get_reg(j, name, num, pos):
+    return j["csr_registers"][f"{name}{num}_{pos}"]["addr"]
+
+j = json.load(open("csr.json"))
+
+print('''#pragma once
+         typedef volatile uint32_t *csr_t;
+      ''')
+
+for conv in iter(reg_names):
+    for reg in reg_names[conv]:
+        print(f"const csr_t {conv}_{reg}[{max_num}] =", "{")
+        for i in range(0,max_num):
+            print("\t", get_reg(j, conv, i, reg), end='')
+            if i != max_num - 1:
+                print(",")
+        print("\n};")