(1) Changed API addresses for ctrl and status registers - HEADSUP: this might break SW that tries to do discard. Updated core version to reflect api changes. (2) Added support for reading discard and test mode bits in control register.

1 files changed, 5 insertions, 3 deletions

diff --git a/src/rtl/trng.v b/src/rtl/trng.v
index 728fa39..06af515 100644
--- a/src/rtl/trng.v
+++ b/src/rtl/trng.v
@@ -76,17 +76,18 @@ module trng(
   localparam ADDR_NAME1              = 8'h01;
   localparam ADDR_VERSION            = 8'h02;
 
-  localparam ADDR_TRNG_CTRL          = 8'h10;
+  localparam ADDR_TRNG_CTRL          = 8'h08;
   localparam TRNG_CTRL_DISCARD_BIT   = 0;
   localparam TRNG_CTRL_TEST_MODE_BIT = 1;
 
-  localparam ADDR_TRNG_STATUS        = 8'h11;
+  localparam ADDR_TRNG_STATUS        = 8'h09;
+
   localparam ADDR_DEBUG_CTRL         = 8'h12;
   localparam ADDR_DEBUG_DELAY        = 8'h13;
 
   localparam TRNG_NAME0              = 32'h74726e67; // "trng"
   localparam TRNG_NAME1              = 32'h20202020; // "    "
-  localparam TRNG_VERSION            = 32'h302e3530; // "0.50"
+  localparam TRNG_VERSION            = 32'h302e3531; // "0.51"
 
   // 20x/s @ 50 MHz.
   localparam DEFAULT_DEBUG_DELAY     = 32'h002625a0;
@@ -556,6 +557,7 @@ module trng(
 
                 ADDR_TRNG_CTRL:
                   begin
+                    trng_api_read_data = {30'h0000000, test_mode_reg, discard_reg};
                   end
 
                 ADDR_TRNG_STATUS: