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Reworked DCD methods for SX1276 and SX1280

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This commit is contained in:
Mark Qvist 2025-01-08 17:45:23 +01:00
parent a796e56dd9
commit 58f6a3d6a3
4 changed files with 36 additions and 16 deletions
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34
sx128x.cpp
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@ -410,23 +410,31 @@ int sx128x::endPacket() {
else { return 1; }
}
uint8_t sx128x::modemStatus() {
// Imitate the register status from the sx1276 / 78
uint8_t buf[2] = {0};
executeOpcodeRead(OP_GET_IRQ_STATUS_8X, buf, 2);
uint8_t clearbuf[2] = {0};
uint8_t byte = 0x00;
unsigned long preamble_detected_at = 0;
unsigned long header_detected_at = 0;
extern long lora_preamble_time_ms;
extern long lora_header_time_ms;
bool sx128x::dcd() {
bool carrier_detected = false;
uint8_t buf[2] = {0}; executeOpcodeRead(OP_GET_IRQ_STATUS_8X, buf, 2);
if ((buf[0] & IRQ_PREAMBLE_DET_MASK_8X) != 0) {
byte = byte | 0x01 | 0x04;
// Clear register after reading
clearbuf[0] = IRQ_PREAMBLE_DET_MASK_8X;
if ((buf[1] & IRQ_PREAMBLE_DET_MASK_8X) != 0) {
carrier_detected = true;
if (preamble_detected_at == 0) preamble_detected_at = millis();
if (millis() - preamble_detected_at > lora_preamble_time_ms + lora_header_time_ms) {
preamble_detected_at = 0;
uint8_t clearbuf[2] = {0};
clearbuf[1] = IRQ_PREAMBLE_DET_MASK_8X;
executeOpcode(OP_CLEAR_IRQ_STATUS_8X, clearbuf, 2);
}
}
if ((buf[1] & IRQ_HEADER_DET_MASK_8X) != 0) { byte = byte | 0x02 | 0x04; }
executeOpcode(OP_CLEAR_IRQ_STATUS_8X, clearbuf, 2);
if ((buf[1] & IRQ_HEADER_DET_MASK_8X) != 0) {
carrier_detected = true;
header_detected_at = millis();
}
return byte;
return carrier_detected;
}