## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
-## along with this program; if not, write to the Free Software
-## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+## along with this program; if not, see <http://www.gnu.org/licenses/>.
##
import sigrokdecode as srd
from .parts import *
+class Ann:
+ PE, RSB0, RSB1, RSB2, CE, RFB, RHFB, REFB, \
+ RLB, REEM, RP, LPMP, WP, WARN, DEV, = range(15)
+
VENDOR_CODE_ATMEL = 0x1e
class Decoder(srd.Decoder):
- api_version = 2
+ api_version = 3
id = 'avr_isp'
name = 'AVR ISP'
longname = 'AVR In-System Programming'
- desc = 'Protocol for in-system programming Atmel AVR MCUs.'
+ desc = 'Atmel AVR In-System Programming (ISP) protocol.'
license = 'gplv2+'
inputs = ['spi']
- outputs = ['avr_isp']
+ outputs = []
+ tags = ['Debug/trace']
annotations = (
('pe', 'Programming enable'),
('rsb0', 'Read signature byte 0'),
('rfb', 'Read fuse bits'),
('rhfb', 'Read high fuse bits'),
('refb', 'Read extended fuse bits'),
- ('warnings', 'Warnings'),
+ ('rlb', 'Read lock bits'),
+ ('reem', 'Read EEPROM memory'),
+ ('rp', 'Read program memory'),
+ ('lpmp' , 'Load program memory page'),
+ ('wp', 'Write program memory'),
+ ('warning', 'Warning'),
('dev', 'Device'),
)
annotation_rows = (
- ('bits', 'Bits', ()),
- ('commands', 'Commands', tuple(range(7 + 1))),
- ('warnings', 'Warnings', (8,)),
- ('dev', 'Device', (9,)),
+ ('commands', 'Commands', (Ann.PE, Ann.RSB0, Ann.RSB1, Ann.RSB2,
+ Ann.CE, Ann.RFB, Ann.RHFB, Ann.REFB,
+ Ann.RLB, Ann.REEM, Ann.RP, Ann.LPMP, Ann.WP,)),
+ ('warnings', 'Warnings', (Ann.WARN,)),
+ ('devs', 'Devices', (Ann.DEV,)),
)
def __init__(self):
+ self.reset()
+
+ def reset(self):
self.state = 'IDLE'
self.mosi_bytes, self.miso_bytes = [], []
self.ss_cmd, self.es_cmd = 0, 0
def handle_cmd_programming_enable(self, cmd, ret):
# Programming enable.
# Note: The chip doesn't send any ACK for 'Programming enable'.
- self.putx([0, ['Programming enable']])
+ self.putx([Ann.PE, ['Programming enable']])
# Sanity check on reply.
if ret[1:4] != [0xac, 0x53, cmd[2]]:
- self.putx([8, ['Warning: Unexpected bytes in reply!']])
+ self.putx([Ann.WARN, ['Warning: Unexpected bytes in reply!']])
def handle_cmd_read_signature_byte_0x00(self, cmd, ret):
# Signature byte 0x00: vendor code.
self.vendor_code = ret[3]
v = vendor_code[self.vendor_code]
- self.putx([1, ['Vendor code: 0x%02x (%s)' % (ret[3], v)]])
+ self.putx([Ann.RSB0, ['Vendor code: 0x%02x (%s)' % (ret[3], v)]])
# Store for later.
self.xx = cmd[1] # Same as ret[2].
# Sanity check on reply.
if ret[1] != 0x30 or ret[2] != cmd[1]:
- self.putx([8, ['Warning: Unexpected bytes in reply!']])
+ self.putx([Ann.WARN, ['Warning: Unexpected bytes in reply!']])
# Sanity check for the vendor code.
if self.vendor_code != VENDOR_CODE_ATMEL:
- self.putx([8, ['Warning: Vendor code was not 0x1e (Atmel)!']])
+ self.putx([Ann.WARN, ['Warning: Vendor code was not 0x1e (Atmel)!']])
def handle_cmd_read_signature_byte_0x01(self, cmd, ret):
# Signature byte 0x01: part family and memory size.
self.part_fam_flash_size = ret[3]
- self.putx([2, ['Part family / memory size: 0x%02x' % ret[3]]])
+ self.putx([Ann.RSB1, ['Part family / memory size: 0x%02x' % ret[3]]])
# Store for later.
self.mm = cmd[3]
# Sanity check on reply.
if ret[1] != 0x30 or ret[2] != cmd[1] or ret[0] != self.yy:
- self.putx([8, ['Warning: Unexpected bytes in reply!']])
+ self.putx([Ann.WARN, ['Warning: Unexpected bytes in reply!']])
def handle_cmd_read_signature_byte_0x02(self, cmd, ret):
# Signature byte 0x02: part number.
self.part_number = ret[3]
- self.putx([3, ['Part number: 0x%02x' % ret[3]]])
+ self.putx([Ann.RSB2, ['Part number: 0x%02x' % ret[3]]])
- p = part[(self.part_fam_flash_size, self.part_number)]
- data = [9, ['Device: Atmel %s' % p]]
- self.put(self.ss_device, self.es_cmd, self.out_ann, data)
+ # Part name if known
+ key = (self.part_fam_flash_size, self.part_number)
+ if key in part:
+ p = part[key]
+ data = [Ann.DEV, ['Device: Atmel %s' % p]]
+ self.put(self.ss_device, self.es_cmd, self.out_ann, data)
# Sanity check on reply.
if ret[1] != 0x30 or ret[2] != self.xx or ret[0] != self.mm:
- self.putx([8, ['Warning: Unexpected bytes in reply!']])
+ self.putx([Ann.WARN, ['Warning: Unexpected bytes in reply!']])
self.xx, self.yy, self.zz, self.mm = 0, 0, 0, 0
# Chip erase (erases both flash an EEPROM).
# Upon successful chip erase, the lock bits will also be erased.
# The only way to end a Chip Erase cycle is to release RESET#.
- self.putx([4, ['Chip erase']])
+ self.putx([Ann.CE, ['Chip erase']])
# TODO: Check/handle RESET#.
# Sanity check on reply.
bit = (ret[2] & (1 << 7)) >> 7
if ret[1] != 0xac or bit != 1 or ret[3] != cmd[2]:
- self.putx([8, ['Warning: Unexpected bytes in reply!']])
+ self.putx([Ann.WARN, ['Warning: Unexpected bytes in reply!']])
def handle_cmd_read_fuse_bits(self, cmd, ret):
# Read fuse bits.
- self.putx([5, ['Read fuse bits: 0x%02x' % ret[3]]])
+ self.putx([Ann.RFB, ['Read fuse bits: 0x%02x' % ret[3]]])
# TODO: Decode fuse bits.
# TODO: Sanity check on reply.
def handle_cmd_read_fuse_high_bits(self, cmd, ret):
# Read fuse high bits.
- self.putx([6, ['Read fuse high bits: 0x%02x' % ret[3]]])
+ self.putx([Ann.RHFB, ['Read fuse high bits: 0x%02x' % ret[3]]])
# TODO: Decode fuse bits.
# TODO: Sanity check on reply.
def handle_cmd_read_extended_fuse_bits(self, cmd, ret):
# Read extended fuse bits.
- self.putx([7, ['Read extended fuse bits: 0x%02x' % ret[3]]])
+ self.putx([Ann.REFB, ['Read extended fuse bits: 0x%02x' % ret[3]]])
# TODO: Decode fuse bits.
# TODO: Sanity check on reply.
+ def handle_cmd_read_lock_bits(self, cmd, ret):
+ # Read lock bits
+ self.putx([Ann.RLB, ['Read lock bits: 0x%02x' % ret[3]]])
+
+ def handle_cmd_read_eeprom_memory(self, cmd, ret):
+ # Read EEPROM Memory
+ _addr = ((cmd[1] & 1) << 8) + cmd[2]
+ self.putx([Ann.REEM, ['Read EEPROM Memory: [0x%03x]: 0x%02x' % (_addr, ret[3])]])
+
+ def handle_cmd_read_program_memory(self, cmd, ret):
+ # Read Program Memory
+ _HL = 'Low'
+ _H = 'L'
+ if cmd[0] & 0x08:
+ _HL = 'High'
+ _H = 'H'
+ _addr = ((cmd[1] & 0x0f) << 8) + cmd[2]
+ self.putx([Ann.RP, [
+ 'Read program memory %s: [0x%03x]: 0x%02x' % (_HL, _addr, ret[3]),
+ '[%03x%s]:%02x' % (_addr, _H, ret[3]),
+ '%02x' % ret[3]
+ ]])
+
+ def handle_cmd_load_program_memory_page(self, cmd, ret):
+ # Load Program Memory Page
+ _HL = 'Low'
+ _H = 'L'
+ if cmd[0] & 0x08:
+ _HL = 'High'
+ _H = 'H'
+ _addr = cmd[2] & 0x1F
+ self.putx([Ann.LPMP, [
+ 'Load program memory page %s: [0x%03x]: 0x%02x' % (_HL, _addr, cmd[3]),
+ '[%03x%s]=%02x' % (_addr, _H, cmd[3]),
+ '%02x' % cmd[3]
+ ]])
+
+ def handle_cmd_write_program_memory_page(self, cmd, ret):
+ # Write Program Memory Page
+ _addr = ((cmd[1] & 0x0F) << 3) + (cmd[2] << 5)
+ self.putx([Ann.WP, ['Write program memory page: 0x%02x' % _addr]])
+
def handle_command(self, cmd, ret):
if cmd[:2] == [0xac, 0x53]:
self.handle_cmd_programming_enable(cmd, ret)
self.handle_cmd_read_signature_byte_0x01(cmd, ret)
elif cmd[0] == 0x30 and cmd[2] == 0x02:
self.handle_cmd_read_signature_byte_0x02(cmd, ret)
+ elif cmd[:2] == [0x58, 0x00]:
+ self.handle_cmd_read_lock_bits(cmd,ret)
+ elif cmd[0] == 0xa0 and (cmd[1] & (3 << 6)) == (0 << 6):
+ self.handle_cmd_read_eeprom_memory(cmd, ret)
+ elif (cmd[0] == 0x20 or cmd[0] == 0x28) and ((cmd[1] & 0xf0) == 0x00):
+ self.handle_cmd_read_program_memory(cmd, ret)
+ elif (cmd[0] == 0x40 or cmd[0] == 0x48) and ((cmd[1] & 0xf0) == 0x00):
+ self.handle_cmd_load_program_memory_page(cmd, ret)
+ elif (cmd[0] == 0x4C and ((cmd[1] & 0xf0) == 0x00)):
+ self.handle_cmd_write_program_memory_page(cmd, ret)
else:
c = '%02x %02x %02x %02x' % tuple(cmd)
r = '%02x %02x %02x %02x' % tuple(ret)
- self.putx([0, ['Unknown command: %s (reply: %s)!' % (c, r)]])
+ self.putx([Ann.WARN, ['Unknown command: %s (reply: %s)!' % (c, r)]])
def decode(self, ss, es, data):
ptype, mosi, miso = data
projects / libsigrokdecode.git / blobdiff