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TPMS packets to IDs and values.

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This commit is contained in:
Jared Boone 2016-01-18 21:42:26 -08:00
parent dbea30b9e4
commit 7ad9ad2596
2 changed files with 95 additions and 6 deletions
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27
firmware/application/tpms_app.cpp
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@ -40,6 +40,17 @@ ManchesterFormatted Packet::symbols_formatted() const {
return format_manchester(decoder_);
}
Optional<Reading> Packet::reading() const {
const auto length = crc_valid_length();
switch(length) {
case 64: return Reading { reader_.read(0, 32), reader_.read(32, 8) };
case 72: return Reading { reader_.read(0, 32), reader_.read(40, 8), reader_.read(48, 8), reader_.read(56, 8) };
case 80: return Reading { reader_.read(8, 32), reader_.read(48, 8), reader_.read(56, 8), reader_.read(64, 8) };
default: return { };
}
}
size_t Packet::crc_valid_length() const {
constexpr uint32_t checksum_bytes = 0b1111111;
constexpr uint32_t crc_72_bytes = 0b111111111;
@ -133,11 +144,17 @@ void TPMSAppView::on_packet(const tpms::Packet& packet) {
}
void TPMSAppView::draw(const tpms::Packet& packet) {
const auto packet_length = packet.crc_valid_length();
if( packet_length > 0 ) {
const size_t length_chars = packet_length * 2 / 8;
const auto hex_formatted = packet.symbols_formatted();
console.writeln(hex_formatted.data.substr(0, length_chars));
const auto reading_opt = packet.reading();
if( reading_opt.is_valid() ) {
const auto reading = reading_opt.value();
auto s = to_string_hex(reading.id(), 8) + " " + to_string_hex(reading.value_1(), 2);
if( reading.value_2().is_valid() ) {
s += " " + to_string_hex(reading.value_2().value(), 2);
}
if( reading.value_3().is_valid() ) {
s += " " + to_string_hex(reading.value_3().value(), 2);
}
console.writeln(s);
}
}