Started working on internal checksum transfers

unicmd.py

@@ -32,6 +32,12 @@ def crc16_fdl(data: bytes): # used in FDL1/2 mode
     crc += (crc >> 16)
     return ~crc & 0xffff
 
+def chksum32(data: bytes): # used in flashing mode
+    cksum = 0
+    for c in data:
+        cksum = (cksum + c) & 0xffffffff
+    return cksum
+
 def hdlc_encode(data, fdl = False, nocrc = False):
     if nocrc:
         crc = 0
@@ -120,18 +126,14 @@ BSL_CMD_READ_MIDST = 0x11
 BSL_CMD_READ_END = 0x12
 
 BSL_CMD_KEEP_CHARGE = 0x13
-BSL_CMD_EXTTABLE = 0x14
 BSL_CMD_READ_FLASH_UID = 0x15
-BSL_CMD_READ_SOFTSIM_EID = 0x16
 BSL_CMD_POWER_OFF = 0x17
-BSL_CMD_CHECK_ROOT = 0x19
-BSL_CMD_READ_CHIP_UID = 0x1a
-BSL_CMD_ENABLE_WRITE_FLASH = 0x1b
-BSL_CMD_ENABLE_SECUREBOOT = 0x1c
-BSL_CMD_READ_RF_TRANSCEIVER_TYPE = 0x24
-BSL_CMD_CHECK_BAUD = FLAG_BYTE
+BSL_CMD_READ_CHIP_UID = 0x1A
+BSL_CMD_ENABLE_WRITE_FLASH = 0x1B
+BSL_CMD_ENABLE_SECUREBOOT = 0x1C
+BSL_CMD_EXEC_NAND_INIT = 0x21
 
-BSL_DDR_VERIFY = 0x26
+BSL_CMD_CHECK_BAUD = FLAG_BYTE
 
 BSL_CMD_END_PROCESS = 0x7F
 
@@ -218,8 +220,11 @@ def shape_data_packet(dtype, data, dlen = 0):
     packethdr = pack('>HH', dtype, dlen)
     return packethdr + data
 
-def cmd_data_start(targetAddr, targetLen):
-    datahdr = pack('>LL', targetAddr, targetLen)
+def cmd_data_start(targetAddr, targetLen, externalCrc = 0):
+    if externalCrc:
+        datahdr = pack('>LLL', targetAddr, targetLen, externalCrc)
+    else:
+        datahdr = pack('>LL', targetAddr, targetLen)
     return shape_data_packet(BSL_CMD_START_DATA, datahdr)
 
 def cmd_data_send(data):
@@ -251,9 +256,6 @@ def cmd_read_chip_type():
 def cmd_read_sector_size():
     return shape_cmd_packet(BSL_CMD_READ_SECTOR_SIZE)
 
-def cmd_read_flash_info():
-    return shape_cmd_packet(BSL_CMD_READ_FLASH_INFO)
-
 def cmd_read_flash(targetAddr, targetLen, offset):
     return pack('>HHLLL', BSL_CMD_READ_FLASH, 12, targetAddr, targetLen, offset)