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ADSB position decoding

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Date and time string format function
Binary update
This commit is contained in:
furrtek 2017-08-17 12:56:47 +01:00
parent 9d902bc224
commit 2628f9c03d
15 changed files with 255 additions and 108 deletions
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22
firmware/common/adsb_frame.hpp
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@ -44,6 +44,13 @@ public:
uint32_t get_ICAO_address() {
return (raw_data[1] << 16) + (raw_data[2] << 8) + raw_data[3];
}
void set_rx_timestamp(uint32_t timestamp) {
rx_timestamp = timestamp;
}
uint32_t get_rx_timestamp() {
return rx_timestamp;
}
void clear() {
index = 0;
@ -57,8 +64,8 @@ public:
raw_data[index++] = byte;
}
uint8_t * get_raw_data() {
return raw_data;
uint8_t * get_raw_data() const {
return (uint8_t* const)raw_data;
}
void make_CRC() {
@ -73,18 +80,23 @@ public:
bool check_CRC() {
uint32_t computed_CRC = compute_CRC();
if (raw_data[11] != ((computed_CRC >> 16) & 0xFF)) return false;
if (raw_data[12] != ((computed_CRC >> 8) & 0xFF)) return false;
if (raw_data[13] != (computed_CRC & 0xFF)) return false;
if ((raw_data[11] != ((computed_CRC >> 16) & 0xFF)) ||
(raw_data[12] != ((computed_CRC >> 8) & 0xFF)) ||
(raw_data[13] != (computed_CRC & 0xFF))) return false;
return true;
}
bool empty() {
return (index == 0);
}
private:
static const uint8_t adsb_preamble[16];
static const char icao_id_lut[65];
alignas(4) uint8_t index { 0 };
alignas(4) uint8_t raw_data[14] { }; // 112 bits at most
uint32_t rx_timestamp { };
uint32_t compute_CRC() {
uint8_t adsb_crc[14] = { 0 }; // Temp buffer