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fix holes in .hex if there are any

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This commit is contained in:
cTn 2013-11-16 21:10:56 +01:00
parent cc13ab5760
commit b5db9e8869
1 changed files with 37 additions and 2 deletions
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37
workers/hex_parser.js
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@ -19,6 +19,9 @@ function read_hex_file(data) {
bytes: 0 bytes: 0
}; };
var previous_address = 0;
var previous_byte_count = 0;
for (var i = 0; i < data.length; i++) { for (var i = 0; i < data.length; i++) {
var byte_count = parseInt(data[i].substr(1, 2), 16); // each byte is represnted by two chars var byte_count = parseInt(data[i].substr(1, 2), 16); // each byte is represnted by two chars
var address = data[i].substr(3, 4); var address = data[i].substr(3, 4);
@ -28,6 +31,21 @@ function read_hex_file(data) {
switch (record_type) { switch (record_type) {
case 0x00: // data record case 0x00: // data record
// fix "holes" if there are any
if (parseInt(address, 16) != previous_address + previous_byte_count) {
var difference = parseInt(address, 16) - (previous_address + previous_byte_count);
// fill in the difference
for (var fix = 0; fix < difference; fix++) {
result.data.push(0xFF);
result.bytes++;
}
}
previous_address = parseInt(address, 16);
previous_byte_count = byte_count;
// process data
var crc = byte_count + parseInt(address.substr(0, 2), 16) + parseInt(address.substr(2, 2), 16) + record_type; var crc = byte_count + parseInt(address.substr(0, 2), 16) + parseInt(address.substr(2, 2), 16) + record_type;
for (var needle = 0; needle < byte_count * 2; needle += 2) { for (var needle = 0; needle < byte_count * 2; needle += 2) {
var num = parseInt(content.substr(needle, 2), 16); // get one byte in hex and convert it to decimal var num = parseInt(content.substr(needle, 2), 16); // get one byte in hex and convert it to decimal
@ -61,7 +79,24 @@ function read_hex_file(data) {
console.log('start segment address record found - NOT IMPLEMENTED !!!'); console.log('start segment address record found - NOT IMPLEMENTED !!!');
break; break;
case 0x04: // extended linear address record case 0x04: // extended linear address record
result.extended_linear_address.push((parseInt(content.substr(0, 2), 16) << 24) | parseInt(content.substr(2, 2), 16) << 16); var extended_linear_address = (parseInt(content.substr(0, 2), 16) << 24) | parseInt(content.substr(2, 2), 16) << 16;
result.extended_linear_address.push(extended_linear_address);
extended_linear_address -= 0x08000000;
if (previous_address != 0) { // dont execute the first time
var difference = extended_linear_address - (previous_address + previous_byte_count);
// fix "holes" if there are any
for (var fix = 0; fix < difference; fix++) {
result.data.push(0xFF);
result.bytes++;
}
// reset some variables
previous_address = 0;
previous_byte_count = 0;
}
break; break;
case 0x05: // start linear address record case 0x05: // start linear address record
result.start_linear_address = (parseInt(content.substr(0, 2), 16) << 24) | (parseInt(content.substr(2, 2), 16) << 16) | (parseInt(content.substr(4, 2), 16) << 8) | parseInt(content.substr(6, 2), 16); result.start_linear_address = (parseInt(content.substr(0, 2), 16) << 24) | (parseInt(content.substr(2, 2), 16) << 16) | (parseInt(content.substr(4, 2), 16) << 8) | parseInt(content.substr(6, 2), 16);