import sigrokdecode as srd
-cmd_name = {
- # Normal commands (CMD)
+# Normal commands (CMD)
+cmd_names = {
0: 'GO_IDLE_STATE',
1: 'SEND_OP_COND',
6: 'SWITCH_FUNC',
58: 'READ_OCR',
59: 'CRC_ON_OFF',
# CMD60-63: Reserved for manufacturer
+}
- # Application-specific commands (ACMD)
+# Application-specific commands (ACMD)
+acmd_names = {
13: 'SD_STATUS',
18: 'Reserved for SD security applications',
22: 'SEND_NUM_WR_BLOCKS',
51: 'SEND_SCR',
}
-def cmd_list():
- l = []
- for i in range(63 + 1):
- l.append(('cmd%d' % i, 'CMD%d' % i))
-
- return tuple(l)
-
class Decoder(srd.Decoder):
api_version = 2
id = 'sdcard_spi'
license = 'gplv2+'
inputs = ['spi']
outputs = ['sdcard_spi']
- annotations = cmd_list() + (
- ('cmd-desc', 'Command description'),
+ annotations = \
+ tuple(('cmd%d' % i, 'CMD%d' % i) for i in range(64)) + \
+ tuple(('acmd%d' % i, 'ACMD%d' % i) for i in range(64)) + ( \
('r1', 'R1 reply'),
('r1b', 'R1B reply'),
('r2', 'R2 reply'),
('bit-warnings', 'Bit warnings'),
)
annotation_rows = (
- ('bits', 'Bits', (70, 71)),
- ('cmd-reply', 'Commands/replies',
- tuple(range(0, 63 + 1)) + tuple(range(65, 69 + 1))),
- ('cmd-token', 'Command tokens', (64,)),
+ ('bits', 'Bits', (134, 135)),
+ ('cmd-reply', 'Commands/replies', tuple(range(134))),
)
def __init__(self, **kwargs):
def putb(self, data):
self.put(self.bit_ss, self.bit_es, self.out_ann, data)
+ def cmd_name(self, cmd):
+ c = acmd_names if self.is_acmd else cmd_names
+ return c.get(cmd, 'Unknown')
+
def handle_command_token(self, mosi, miso):
# Command tokens (6 bytes) are sent (MSB-first) by the host.
#
# Bits[47:47]: Start bit (always 0)
bit, self.bit_ss, self.bit_es = tb(5, 7)[0], tb(5, 7)[1], tb(5, 7)[2]
if bit == 0:
- self.putb([70, ['Start bit: %d' % bit]])
+ self.putb([134, ['Start bit: %d' % bit]])
else:
- self.putb([71, ['Start bit: %s (Warning: Must be 0!)' % bit]])
+ self.putb([135, ['Start bit: %s (Warning: Must be 0!)' % bit]])
# Bits[46:46]: Transmitter bit (1 == host)
bit, self.bit_ss, self.bit_es = tb(5, 6)[0], tb(5, 6)[1], tb(5, 6)[2]
if bit == 1:
- self.putb([70, ['Transmitter bit: %d' % bit]])
+ self.putb([134, ['Transmitter bit: %d' % bit]])
else:
- self.putb([71, ['Transmitter bit: %d (Warning: Must be 1!)' % bit]])
+ self.putb([135, ['Transmitter bit: %d (Warning: Must be 1!)' % bit]])
# Bits[45:40]: Command index (BCD; valid: 0-63)
cmd = self.cmd_index = t[0] & 0x3f
self.bit_ss, self.bit_es = tb(5, 5)[1], tb(5, 0)[2]
- self.putb([70, ['Command: %s%d (%s)' % (s, cmd, cmd_name[cmd])]])
+ self.putb([134, ['Command: %s%d (%s)' % (s, cmd, self.cmd_name(cmd))]])
# Bits[39:8]: Argument
self.arg = (t[1] << 24) | (t[2] << 16) | (t[3] << 8) | t[4]
self.bit_ss, self.bit_es = tb(4, 7)[1], tb(1, 0)[2]
- self.putb([70, ['Argument: 0x%04x' % self.arg]])
+ self.putb([134, ['Argument: 0x%04x' % self.arg]])
# Bits[7:1]: CRC7
# TODO: Check CRC7.
crc = t[5] >> 1
self.bit_ss, self.bit_es = tb(0, 7)[1], tb(0, 1)[2]
- self.putb([70, ['CRC7: 0x%01x' % crc]])
+ self.putb([134, ['CRC7: 0x%01x' % crc]])
# Bits[0:0]: End bit (always 1)
bit, self.bit_ss, self.bit_es = tb(0, 0)[0], tb(0, 0)[1], tb(0, 0)[2]
- self.putb([70, ['End bit: %d' % bit]])
+ self.putb([134, ['End bit: %d' % bit]])
if bit == 1:
- self.putb([70, ['End bit: %d' % bit]])
+ self.putb([134, ['End bit: %d' % bit]])
else:
- self.putb([71, ['End bit: %d (Warning: Must be 1!)' % bit]])
+ self.putb([135, ['End bit: %d (Warning: Must be 1!)' % bit]])
# Handle command.
if cmd in (0, 1, 9, 16, 17, 41, 49, 55, 59):
self.state = 'HANDLE CMD%d' % cmd
- self.cmd_str = '%s%d (%s)' % (s, cmd, cmd_name[cmd])
+ self.cmd_str = '%s%d (%s)' % (s, cmd, self.cmd_name(cmd))
else:
self.state = 'HANDLE CMD999'
a = '%s%d: %02x %02x %02x %02x %02x %02x' % ((s, cmd) + tuple(t))
self.putx([cmd, [a]])
- # ...
- if self.is_acmd and cmd != 55:
- self.is_acmd = False
-
def handle_cmd0(self):
# CMD0: GO_IDLE_STATE
self.putc(0, 'Reset the SD card')
hcs = (self.arg & (1 << 30)) >> 30
self.bit_ss = self.cmd_token_bits[5 - 4][6][1]
self.bit_es = self.cmd_token_bits[5 - 4][6][2]
- self.putb([70, ['HCS: %d' % hcs]])
+ self.putb([134, ['HCS: %d' % hcs]])
self.state = 'GET RESPONSE R1'
def handle_cmd9(self):
self.read_buf = []
self.state = 'GET RESPONSE R1'
- def handle_cmd41(self):
- # ACMD41: SD_SEND_OP_COND
- self.putc(41, 'Send HCS info and activate the card init process')
- self.state = 'GET RESPONSE R1'
-
def handle_cmd49(self):
self.state = 'GET RESPONSE R1'
self.putc(59, 'Turn the SD card CRC option %s' % s)
self.state = 'GET RESPONSE R1'
+ def handle_acmd41(self):
+ # ACMD41: SD_SEND_OP_COND
+ self.putc(64 + 41, 'Send HCS info and activate the card init process')
+ self.state = 'GET RESPONSE R1'
+
def handle_cmd999(self):
self.state = 'GET RESPONSE R1'
def putbit(bit, data):
b = self.miso_bits[bit]
self.bit_ss, self.bit_es = b[1], b[2]
- self.putb([70, data])
+ self.putb([134, data])
# Bit 0: 'In idle state' bit
s = '' if (res & (1 << 0)) else 'not '
elif self.state.startswith('HANDLE CMD'):
self.miso, self.mosi = miso, mosi
# Call the respective handler method for the command.
- s = 'handle_cmd%s' % self.state[10:].lower()
- handle_cmd = getattr(self, s)
+ a, cmdstr = 'a' if self.is_acmd else '', self.state[10:].lower()
+ handle_cmd = getattr(self, 'handle_%scmd%s' % (a, cmdstr))
handle_cmd()
self.cmd_token = []
self.cmd_token_bits = []
+ # Leave ACMD mode again after the first command after CMD55.
+ if self.is_acmd and cmdstr != '55':
+ self.is_acmd = False
elif self.state.startswith('GET RESPONSE'):
# Ignore stray 0xff bytes, some devices seem to send those!?
if miso == 0xff: # TODO?