From e1b42da41e769ad83f50f2f221bf4ae8d31bb7f6 Mon Sep 17 00:00:00 2001
From: Robin Krens <robin@robinkrens.nl>
Date: Sat, 10 Feb 2024 00:08:51 +0100
Subject: [PATCH 1/1] flasher.py: formatting commands
---
flasher.py | 38 ++++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 flasher.py
diff --git a/flasher.py b/flasher.py
new file mode 100644
index 0000000..446a66d
--- /dev/null
+++ b/flasher.py
@@ -0,0 +1,38 @@
+import struct
+
+INQ_CMD = 0x00
+ERA_CMD = 0x12
+WRI_CMD = 0x13
+REA_CMD = 0x15
+IDA_CMD = 0x30
+BAU_CMD = 0x34
+SIG_CMD = 0x3A
+ARE_CMD = 0x3B
+
+def format_command(cmd, data):
+ SOD = 0x01
+ COM = cmd
+ COM_DATA = bytes(data.encode('utf-8'))
+ LNH = len(data) + 1 & 0xFF00
+ LNL = len(data) + 1 & 0x00FF
+ calcsum = LNH + LNL
+ for i in range(len(data)):
+ calcsum += ord(data[i])
+ SUM = ~(calcsum) & 0xFF # two's complement
+ print("sum calculation:", SUM)
+ ETX = 0x03
+ fmt_header = '<BBBB'
+ fmt_footer = 'BB'
+ return (fmt_header + str(len(data)) + 's' + fmt_footer)
+
+def format_data(data):
+ SOD = 0x81
+ ETX = 0x03
+
+cmd = format_command(INQ_CMD, "")
+print(cmd, struct.calcsize(cmd))
+
+
+
+
+
--
2.7.4