chiDT
7edb3cde54
- Implement complete CurrentDemandReq/CurrentDemandRes parsing (24 total fields) - Add enhanced_exi_viewer.c with detailed message analysis - Support -decode option for clean XML output (file-ready format) - Enable ISO1, ISO2, DIN codec support in build configuration - Fix C99 compatibility issues in makefiles (change -ansi to -std=c99) - Create test utilities for hex string to EXI conversion - Generate test files: test3.exi (CurrentDemandRes), test4.exi (CurrentDemandReq) Features: * Dual output modes: detailed analysis (default) vs XML (-decode) * Complete V2G message type detection and parsing * Session ID display in hex and ASCII formats * Voltage/current/power readings with proper units * All optional fields and status flags supported 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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int hex_char_to_int(char c) {
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if (c >= '0' && c <= '9') return c - '0';
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if (c >= 'A' && c <= 'F') return c - 'A' + 10;
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if (c >= 'a' && c <= 'f') return c - 'a' + 10;
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return -1;
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}
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int main() {
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// Extract EXI data starting from offset 0x0052 (after "80 98 02")
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// The complete EXI data from the hex dump
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const char* hex_string = "8098021050908c0c0c0e0c50d10032018600a01881ae0601860c806140c801030800006100001881980600";
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size_t hex_len = strlen(hex_string);
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if (hex_len % 2 != 0) {
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printf("Error: Hex string length must be even\n");
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return -1;
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}
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size_t binary_len = hex_len / 2;
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unsigned char* binary_data = malloc(binary_len);
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if (!binary_data) {
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printf("Memory allocation failed\n");
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return -1;
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}
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// Convert hex string to binary
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for (size_t i = 0; i < binary_len; i++) {
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int high = hex_char_to_int(hex_string[i * 2]);
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int low = hex_char_to_int(hex_string[i * 2 + 1]);
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if (high == -1 || low == -1) {
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printf("Invalid hex character at position %zu\n", i * 2);
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free(binary_data);
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return -1;
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}
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binary_data[i] = (high << 4) | low;
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}
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// Write to file
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FILE* file = fopen("test2.exi", "wb");
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if (!file) {
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printf("Cannot create output file\n");
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free(binary_data);
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return -1;
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}
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size_t written = fwrite(binary_data, 1, binary_len, file);
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fclose(file);
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free(binary_data);
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if (written != binary_len) {
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printf("Write error\n");
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return -1;
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}
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printf("Successfully created test2.exi with %zu bytes\n", binary_len);
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// Show first few bytes for verification
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printf("First 16 bytes: ");
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FILE* verify = fopen("test2.exi", "rb");
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if (verify) {
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for (int i = 0; i < 16 && i < binary_len; i++) {
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int c = fgetc(verify);
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printf("%02X ", c);
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}
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fclose(verify);
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}
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printf("\n");
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return 0;
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} |