xref: /btstack/chipset/em9301/convert_emp.py (revision c9921182ab4b1f83e3e5c671446dca5ffdf45b90) 
1#!/usr/bin/env python3
2# BlueKitchen GmbH (c) 2018
3import sys
4
5usage = '''This script converts a set of configurations and patches in .emp format for EM9304
6into a single C files to be used with BTstack. It also configures the controller for 8 connections
7and enables support for LE Data Length Extension.
8
9Usage:
10$ ./convert_emp.py container.emp
11'''
12
13header = '''/**
14 * BASENAME.h converted from BASENAME.emp
15 */
16
17#ifndef BASENAME_H
18#define BASENAME_H
19
20#include <stdint.h>
21extern const uint8_t  container_blob_data[];
22extern const uint32_t container_blob_size;
23extern const char *   container_blob_name;
24
25#endif
26'''
27
28code_start = '''/**
29 * BASENAME.c converted from BASENAME.bin
30 * Size: SIZE bytes
31 *
32 * BTstack: added config for 8 connections + 251 packet len
33 */
34
35#include <stdint.h>
36
37const char *   container_blob_name = "BASENAME";
38
39const uint8_t  container_blob_data[] = {
40'''
41
42code_end = '''
43    // configure EM9304 for 8 connections, data length 251
44    0x33, 0x39, 0x6d, 0x65, 0x24, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x14,
45    0x11, 0x0c, 0x00, 0x00, 0x56, 0x62, 0xc3, 0xd4, 0x30, 0x02, 0x00, 0x00,
46    0xfb, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x01, 0x5a, 0x00, 0x0c, 0xf3
47
48};
49const uint32_t container_blob_size = sizeof(container_blob_data);
50'''
51
52def convert_emp(basename):
53	emp_name = basename + '.emp'
54	print ('Reading %s' % emp_name)
55
56	with open (emp_name, 'rb') as fin:
57		firm = fin.read()
58		size = len(firm)
59
60		# reduce size by 4 as it ends with four zero bytes that indicate the end of the file
61		size -= 4
62
63		# don't write .h file as we would need to store its name in btstack_chipset_em9301.c, too
64		# with open(basename + '.h', 'w') as fout:
65		# 	fout.write(header.replace('BASENAME',basename));
66
67		with open(basename + '.c', 'w') as fout:
68			fout.write(code_start.replace('BASENAME',basename).replace('SIZE',str(size)));
69			fout.write('    ')
70			for i in range(0,size):
71				if i % 1000 == 0:
72					print ('- Write %05u/%05u' % (i, size))
73				byte = firm[i]
74				fout.write("0x{0:02x}, ".format(byte))
75				if (i & 0x0f) == 0x0f:
76					fout.write('\n    ')
77			fout.write(code_end);
78			print ('Done\n')
79
80# check usage: 1 param
81if not len(sys.argv) == 2:
82    print(usage)
83    sys.exit(1)
84
85name = sys.argv[1]
86basename = name.replace('.emp','')
87convert_emp(basename)
88