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feat: add two-path bias amplifier with random walk and majority vote stages (FPGA v6)

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randogoth 2026-10-25 14:59:27 +02:00
parent 5305d66102
commit 8541cce59c
11 changed files with 741 additions and 58 deletions
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15
arduino/strix_capture/strix_capture.ino
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@ -8,6 +8,7 @@
// cap start a capture with the current settings and send it as
// "DATA <n>\n" followed by n raw bytes
// stats print the latest statistics trial snapshot as hex
// amp print the latest bias amplifier trial snapshot as hex
#include <SPI.h>
#include <VidorBoot.h>
@ -25,6 +26,7 @@ enum : uint8_t {
REG_STATUS = 0x0C,
REG_DATA = 0x10,
REG_STATS = 0x40,
REG_AMP = 0x42,
};
const uint8_t READ = 0x80;
@ -32,7 +34,8 @@ const uint8_t CONTROL_START_CAPTURE = 0x01;
const uint8_t STATUS_CAPTURE_DONE = 0x02;
const size_t CAPTURE_BYTES = 32768;
const size_t CHUNK_BYTES = 512;
const size_t SNAPSHOT_BYTES = 72;
const size_t STATS_SNAPSHOT_BYTES = 72;
const size_t AMP_SNAPSHOT_BYTES = 44;
VidorUtils fpga;
@ -92,9 +95,9 @@ void capture() {
}
}
void printSnapshot() {
beginTransaction(READ | REG_STATS);
for (size_t i = 0; i < SNAPSHOT_BYTES; i++) {
void printSnapshot(uint8_t reg, size_t length) {
beginTransaction(READ | reg);
for (size_t i = 0; i < length; i++) {
uint8_t value = strixSpi.transfer(0);
if (value < 0x10) Serial.print('0');
Serial.print(value, HEX);
@ -131,7 +134,9 @@ void handleCommand(String line) {
} else if (command == "cap") {
capture();
} else if (command == "stats") {
printSnapshot();
printSnapshot(REG_STATS, STATS_SNAPSHOT_BYTES);
} else if (command == "amp") {
printSnapshot(REG_AMP, AMP_SNAPSHOT_BYTES);
} else if (line.length() > 0) {
Serial.println("ERR unknown or malformed command");
}