Bin2s19 【HIGH-QUALITY HANDBOOK】

def bin2s19(data, base_addr, record_type='S1'): addr_bytes = 'S1':2, 'S2':3, 'S3':4[record_type] lines = [] for i in range(0, len(data), 32): chunk = data[i:i+32] addr = base_addr + i addr_bytes_list = addr.to_bytes(addr_bytes, 'big') count = len(addr_bytes_list) + len(chunk) + 1 line = [record_type, f"count:02X"] line.append(addr_bytes_list.hex().upper()) line.append(chunk.hex().upper()) payload = bytes([count]) + addr_bytes_list + chunk checksum = (0xFF - (sum(payload) & 0xFF)) & 0xFF line.append(f"checksum:02X") lines.append('S' + ''.join(line)) # Termination lines.append(f"S93:02X0:04X((0xFF - (3+0)&0xFF)&0xFF):02X") return '\n'.join(lines) | Tool | Format | Notes | |------|--------|-------| | objcopy (GNU) | S19, Intel HEX, binary | Can convert both ways, very robust. | | srec_cat (SRecord) | 20+ formats | Advanced manipulation (merge, crop, fill). | | bin2hex (generic) | Intel HEX | Alternative hex format. | | make_s19 | S19 | Some proprietary versions exist. |

Example Python snippet:

S1131000DEADBEEF7B S9030000FC Breakdown of first line: S1 (type) 13 (19 decimal = 1 address + 4 data + 1 checksum = 6? Wait – recalc correctly) bin2s19