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Morse special chars and tx duration indication

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furrtek 2017-02-15 04:27:51 +00:00
parent 445503c606
commit 0ba05fea5e
7 changed files with 115 additions and 73 deletions
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39
firmware/common/morse.cpp
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@ -31,43 +31,48 @@ using namespace portapack;
namespace morse {
// Returns 0 if message is too long
size_t morse_encode(std::string& message, const uint32_t time_unit_ms, const uint32_t tone) {
size_t morse_encode(std::string& message, const uint32_t time_unit_ms,
const uint32_t tone, uint32_t * const time_units) {
size_t i, c;
uint8_t code, code_size;
uint16_t code, code_size;
uint8_t morse_message[256];
*time_units = 0;
ToneDef * tone_defs = shared_memory.bb_data.tones_data.tone_defs;
i = 0;
for (char& ch : message) {
if ((ch >= 'a') && (ch <= 'z')) // Make uppercase
if (i > 256) return 0;
if ((ch >= 'a') && (ch <= 'z')) // Make uppercase
ch -= 32;
if ((ch >= 'A') && (ch <= 'Z')) {
code = morse_ITU[ch - 'A' + 10];
} else if ((ch >= '0') && (ch <= '9')) {
code = morse_ITU[ch - '0'];
} else {
ch = ' '; // Default to space char
code = 0;
if ((ch >= '!') && (ch <= '_')) {
code = morse_ITU[ch - '!'];
} else {
code = 0; // Default to space char
}
if (ch == ' ') {
if (!code) {
if (i)
morse_message[i - 1] = 4; // Word space
morse_message[i - 1] = 4; // Word space
} else {
code_size = code & 7;
for (c = 0; c < code_size; c++) {
morse_message[i++] = ((code << c) & 0x80) ? 1 : 0; // Dot/dash
morse_message[i++] = 2; // Symbol space
morse_message[i++] = ((code << c) & 0x8000) ? 1 : 0; // Dot/dash
morse_message[i++] = 2; // Symbol space
}
morse_message[i - 1] = 3; // Letter space
morse_message[i - 1] = 3; // Letter space
}
}
if (i > 256) return 0;
// Count time units
for (c = 0; c < i; c++) {
*time_units += morse_symbols[morse_message[c]];
}
memcpy(shared_memory.bb_data.tones_data.message, morse_message, i);