From: Uwe Hermann <redacted>
Date: Sun, 6 Nov 2016 16:49:28 +0000 (+0100)
Subject: spiflash: Implement WRSR command.
X-Git-Tag: libsigrokdecode-0.5.0~123
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=0a89f2ae27d7ba9e6f009df9745f45c4524234fd;p=libsigrokdecode.git

spiflash: Implement WRSR command.
---

diff --git a/decoders/spiflash/pd.py b/decoders/spiflash/pd.py
index d33ac0c..3afafba 100644
--- a/decoders/spiflash/pd.py
+++ b/decoders/spiflash/pd.py
@@ -174,7 +174,20 @@ class Decoder(srd.Decoder):
         self.cmdstate += 1
 
     def handle_wrsr(self, mosi, miso):
-        pass # TODO
+        # Write status register: Master asserts CS#, sends WRSR command,
+        # writes 1 or 2 status register byte(s).
+        # When done, the master de-asserts CS# again. If this doesn't happen
+        # the WRSR command will not be executed.
+        if self.cmdstate == 1:
+            # Byte 1: Master sends command ID.
+            self.putx([3, ['Command: %s' % cmds[self.state][1]]])
+        elif self.cmdstate in (2, 3):
+            # Bytes 2 and/or 3: Master sends status register byte(s).
+            self.putx([24, ['Status register: 0x%02x' % miso]])
+            self.putx([25, [decode_status_reg(miso)]])
+            # TODO: Handle status register 2 correctly.
+
+        self.cmdstate += 1
 
     def handle_read(self, mosi, miso):
         # Read data bytes: Master asserts CS#, sends READ command, sends