83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
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Usage example for the HEXBuilder class.
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This example shows how to convert a HEX string to a binary buffer and vice versa.
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*/
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#include <HEXBuilder.h>
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void setup() {
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Serial.begin(115200);
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Serial.println("\n\n\nStart.");
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// Convert a HEX string like 6c6c6f20576f726c64 to a binary buffer
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{
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const char *out = "Hello World";
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const char *hexin = "48656c6c6f20576f726c6400"; // As the string above is \0 terminated too
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unsigned char buff[256];
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size_t len = HEXBuilder::hex2bytes(buff, sizeof(buff), hexin);
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if (len != 1 + strlen(out)) {
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Serial.println("Odd - length 1 is wrong");
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}
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if (memcmp(buff, out, len) != 0) {
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Serial.println("Odd - decode 1 went wrong");
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}
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// Safe to print this binary buffer -- as we've included a \0 in the hex sequence.
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Serial.printf("IN: <%s>\nOUT <%s\\0>\n", hexin, buff);
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};
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{
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String helloHEX = "48656c6c6f20576f726c64";
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const char hello[] = "Hello World";
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unsigned char buff[256];
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size_t len = HEXBuilder::hex2bytes(buff, sizeof(buff), helloHEX);
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if (len != strlen(hello)) {
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Serial.println("Odd - length 2 is wrong");
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}
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if (strcmp((char *)buff, hello) != 0) {
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Serial.println("Odd - decode 2 went wrong");
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}
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}
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{
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const unsigned char helloBytes[] = {0x48, 0x56, 0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64};
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String helloHEX = "48566c6c6f20576f726c64";
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String out = HEXBuilder::bytes2hex(helloBytes, sizeof(helloBytes));
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if (out.length() != 2 * sizeof(helloBytes)) {
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Serial.println("Odd - length 3 is wrong");
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}
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// we need to ignore case - as a hex string can be spelled in uppercase and lowercase
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if (!out.equalsIgnoreCase(helloHEX)) {
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Serial.println("Odd - decode 3 went wrong");
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}
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}
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{
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const unsigned char helloBytes[] = {0x6c, 0x6c, 0x6f, 0x20, 0x57, 0x6f, 0x72, 0x6c, 0x64};
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const char helloHex[] = "6c6c6f20576f726c64";
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char buff[256];
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size_t len = HEXBuilder::bytes2hex(buff, sizeof(buff), helloBytes, sizeof(helloBytes));
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if (len != 1 + 2 * sizeof(helloBytes)) {
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Serial.println("Odd - length 4 is wrong");
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}
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// we need to ignore case - as a hex string can be spelled in uppercase and lowercase
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if (strcasecmp(buff, helloHex)) {
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Serial.println("Odd - decode 4 went wrong");
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}
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}
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Serial.println("Done.");
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}
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void loop() {}
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