From 781ef9450d82a9c7381aef17fb4974a1e49ec2d2 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Fri, 8 Jun 2012 16:07:02 +0200 Subject: [PATCH] srd: mx25lxx05d: Further fixes/simplifications. Also handle (not yet implemented) special-case command names such as 'RDP/RES' and 'FAST/READ' correctly. --- decoders/mx25lxx05d/mx25lxx05d.py | 52 ++++++++++++------------------- 1 file changed, 20 insertions(+), 32 deletions(-) diff --git a/decoders/mx25lxx05d/mx25lxx05d.py b/decoders/mx25lxx05d/mx25lxx05d.py index f3c74ef..be86d2f 100644 --- a/decoders/mx25lxx05d/mx25lxx05d.py +++ b/decoders/mx25lxx05d/mx25lxx05d.py @@ -32,7 +32,7 @@ cmds = { 0x05: ('RDSR', 'Read status register'), 0x01: ('WRSR', 'Write status register'), 0x03: ('READ', 'Read data'), - 0x0b: ('FAST_READ', 'Fast read data'), + 0x0b: ('FAST/READ', 'Fast read data'), 0xbb: ('2READ', '2x I/O read'), 0x20: ('SE', 'Sector erase'), 0xd8: ('BE', 'Block erase'), @@ -41,9 +41,7 @@ cmds = { 0x02: ('PP', 'Page program'), 0xad: ('CP', 'Continuously program mode'), 0xb9: ('DP', 'Deep power down'), - # 0xab: ('RDP', 'Release from deep powerdown'), - # 0xab: ('RES', 'Read electronic ID'), - 0xab: ('RDP_RES', 'Release from deep powerdown / Read electronic ID'), + 0xab: ('RDP/RES', 'Release from deep powerdown / Read electronic ID'), 0x90: ('REMS', 'Read electronic manufacturer & device ID'), 0xef: ('REMS2', 'Read ID for 2x I/O mode'), 0xb1: ('ENSO', 'Enter secured OTP'), @@ -99,14 +97,14 @@ class Decoder(srd.Decoder): {'id': 'hold', 'name': 'HOLD#', 'desc': 'TODO.'}, {'id': 'wp_acc', 'name': 'WP#/ACC', 'desc': 'TODO.'}, ] - options = {} # TODO + options = {} annotations = [ ['Text', 'Human-readable text'], ] def __init__(self, **kwargs): self.state = None - self.cmdstate = 1 # TODO + self.cmdstate = 1 self.addr = 0 self.data = [] @@ -122,7 +120,7 @@ class Decoder(srd.Decoder): self.put(self.ss, self.es, self.out_ann, data) def handle_wren(self, mosi, miso): - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) self.state = None # TODO: Check/display device ID / name @@ -130,7 +128,7 @@ class Decoder(srd.Decoder): if self.cmdstate == 1: # Byte 1: Master sends command ID. self.start_sample = self.ss - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) elif self.cmdstate == 2: # Byte 2: Slave sends the JEDEC manufacturer ID. self.putx([0, ['Manufacturer ID: 0x%02x' % miso]]) @@ -158,7 +156,7 @@ class Decoder(srd.Decoder): # Byte 1: Master sends command ID. self.addr = 0 self.start_sample = self.ss - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) elif self.cmdstate in (2, 3, 4): # Bytes 2/3/4: Master sends sectror address (24bits, MSB-first). self.addr |= (mosi << ((4 - self.cmdstate) * 8)) @@ -181,7 +179,7 @@ class Decoder(srd.Decoder): if self.cmdstate == 1: # Byte 1: Master sends command ID. self.start_sample = self.ss - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) elif self.cmdstate in (2, 3): # Bytes 2/3: Master sends two dummy bytes. # TODO: Check dummy bytes? Check reply from device? @@ -203,9 +201,6 @@ class Decoder(srd.Decoder): self.ids.append(miso) d = 'Manufacturer' if self.manufacturer_id_first else 'Device' self.putx([0, ['%s ID' % d]]) - else: - # TODO: Error? - pass if self.cmdstate == 6: self.end_sample = self.es @@ -222,7 +217,7 @@ class Decoder(srd.Decoder): # When done, the master de-asserts CS# again. if self.cmdstate == 1: # Byte 1: Master sends command ID. - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) elif self.cmdstate >= 2: # Bytes 2-x: Slave sends status register as long as master clocks. if self.cmdstate <= 3: # TODO: While CS# asserted. @@ -240,7 +235,7 @@ class Decoder(srd.Decoder): # page address, sends >= 1 data bytes, de-asserts CS#. if self.cmdstate == 1: # Byte 1: Master sends command ID. - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) elif self.cmdstate in (2, 3, 4): # Bytes 2/3/4: Master sends page address (24bits, MSB-first). self.addr |= (mosi << ((4 - self.cmdstate) * 8)) @@ -271,7 +266,7 @@ class Decoder(srd.Decoder): # 3-byte address, reads >= 1 data bytes, de-asserts CS#. if self.cmdstate == 1: # Byte 1: Master sends command ID. - self.putx([0, ['Command: %s' % cmds[self.cmd][1]]]) + self.putx([0, ['Command: %s' % cmds[self.state][1]]]) elif self.cmdstate in (2, 3, 4): # Bytes 2/3/4: Master sends read address (24bits, MSB-first). self.addr |= (mosi << ((4 - self.cmdstate) * 8)) @@ -302,37 +297,30 @@ class Decoder(srd.Decoder): ptype, mosi, miso = data # if ptype == 'DATA': - # s = 'MOSI: 0x%02x, MISO: 0x%02x' % (mosi, miso) - # self.put(0, 0, self.out_ann, [0, [s]]) - # pass + # self.putx([0, ['MOSI: 0x%02x, MISO: 0x%02x' % (mosi, miso)]]) # if ptype == 'CS-CHANGE': # if mosi == 1 and miso == 0: - # self.put(0, 0, self.out_ann, [0, ['Asserting CS#']]) + # self.putx([0, ['Asserting CS#']]) # elif mosi == 0 and miso == 1: - # self.put(0, 0, self.out_ann, [0, ['De-asserting CS#']]) - # return + # self.putx([0, ['De-asserting CS#']]) if ptype != 'DATA': return - cmd = mosi self.ss, self.es = ss, es # If we encountered a known chip command, enter the resp. state. if self.state == None: - if cmd in cmds: - self.state = cmd - self.cmd = cmd # TODO: Eliminate? - self.cmdstate = 1 - else: - pass # TODO + self.state = mosi + self.cmdstate = 1 # Handle commands. - if self.state in cmds.keys(): - handle_reg = getattr(self, 'handle_%s' % cmds[self.cmd][0].lower()) + if self.state in cmds: + s = 'handle_%s' % cmds[self.state][0].lower().replace('/', '_') + handle_reg = getattr(self, s) handle_reg(mosi, miso) else: - self.put(0, 0, self.out_ann, [0, ['Unknown command: 0x%02x' % cmd]]) + self.putx([0, ['Unknown command: 0x%02x' % mosi]]) self.state = None -- 2.30.2