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Move packet timestamping into baseband.

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Now reads the RTC peripheral at the end of each received packet.
TODO: Improve resolution to milliseconds or better.
TODO: Work back from end of packet to compute timestamp for beginning of packet.
TODO: Reuse ChibiOS RTC code, which isn't used now because ChibiOS on M0 core is responsible for RTC configuration, and including ChibiOS RTC API on M4 will also try to initialize/manage the peripheral.
This commit is contained in:
Jared Boone 2015-12-12 11:37:30 -08:00
parent c825a027b2
commit b058d609eb
10 changed files with 62 additions and 38 deletions
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8
firmware/application/tpms_app.cpp
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@ -26,9 +26,6 @@ using namespace portapack;
#include "string_format.hpp"
#include "lpc43xx_cpp.hpp"
using namespace lpc43xx;
TPMSModel::TPMSModel() {
receiver_model.set_baseband_configuration({
.mode = 5,
@ -41,9 +38,6 @@ TPMSModel::TPMSModel() {
}
ManchesterFormatted TPMSModel::on_packet(const TPMSPacketMessage& message) {
rtc::RTC received_at;
rtcGetTime(&RTCD1, &received_at);
const ManchesterDecoder decoder(message.packet, 1);
const auto hex_formatted = format_manchester(decoder);
@ -53,7 +47,7 @@ ManchesterFormatted TPMSModel::on_packet(const TPMSPacketMessage& message) {
const auto tuning_frequency_str = to_string_dec_uint(tuning_frequency, 10);
std::string entry = tuning_frequency_str + " FSK 38.4 19.2 " + hex_formatted.data + "/" + hex_formatted.errors;
log_file.write_entry(received_at, entry);
log_file.write_entry(message.packet.timestamp(), entry);
}
return hex_formatted;