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Dynamic parallel I2S output

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- update NeoPixelBus to v2.8.0
- use single/mono I2S + 4x RMT for 5 outputs or less
- use parallel x8 I2S + 8x RMT for >5 outputs (limit of 300 LEDs per output)
This commit is contained in:
Blaz Kristan
2024-06-12 18:00:00 +02:00
parent 25ade86994
commit f4475b9d2a
10 changed files with 337 additions and 638 deletions
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57
wled00/cfg.cpp
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@@ -156,18 +156,42 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
JsonArray ins = hw_led["ins"];
if (fromFS || !ins.isNull()) {
DEBUG_PRINTF_P(PSTR("Heap before buses: %d\n"), ESP.getFreeHeap());
int s = 0; // bus iterator
if (fromFS) BusManager::removeAll(); // can't safely manipulate busses directly in network callback
uint32_t mem = 0, globalBufMem = 0;
uint16_t maxlen = 0;
uint32_t mem = 0;
bool busesChanged = false;
// determine if it is sensible to use parallel I2S outputs on ESP32 (i.e. more than 5 outputs = 1 I2S + 4 RMT)
bool useParallel = false;
#if defined(ARDUINO_ARCH_ESP32) && !defined(ARDUINO_ARCH_ESP32S2) && !defined(ARDUINO_ARCH_ESP32S3) && !defined(ARDUINO_ARCH_ESP32C3)
unsigned digitalCount = 0;
unsigned maxLeds = 0;
int oldType = 0;
int j = 0;
for (JsonObject elm : ins) {
unsigned type = elm["type"] | TYPE_WS2812_RGB;
unsigned len = elm["len"] | 30;
if (IS_DIGITAL(type) && !IS_2PIN(type)) digitalCount++;
if (len > maxLeds) maxLeds = len;
// we need to have all LEDs of the same type for parallel
if (j++ < 8 && oldType > 0 && oldType != type) oldType = -1;
else if (oldType == 0) oldType = type;
}
DEBUG_PRINTF_P(PSTR("Maximum LEDs on a bus: %u\nDigital buses: %u\nDifferent types: %d\n"), maxLeds, digitalCount, (int)(oldType == -1));
// we may remove 300 LEDs per bus limit when NeoPixelBus is updated beyond 2.9.0
if (/*oldType != -1 && */maxLeds <= 300 && digitalCount > 5) {
useParallel = true;
BusManager::useParallelOutput();
DEBUG_PRINTF_P(PSTR("Switching to parallel I2S with max. %d LEDs per ouptut.\n"), maxLeds);
}
#endif
for (JsonObject elm : ins) {
if (s >= WLED_MAX_BUSSES+WLED_MIN_VIRTUAL_BUSSES) break;
uint8_t pins[5] = {255, 255, 255, 255, 255};
JsonArray pinArr = elm["pin"];
if (pinArr.size() == 0) continue;
pins[0] = pinArr[0];
uint8_t i = 0;
unsigned i = 0;
for (int p : pinArr) {
pins[i++] = p;
if (i>4) break;
@@ -193,12 +217,16 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
ledType |= refresh << 7; // hack bit 7 to indicate strip requires off refresh
if (fromFS) {
BusConfig bc = BusConfig(ledType, pins, start, length, colorOrder, reversed, skipFirst, AWmode, freqkHz, useGlobalLedBuffer, maPerLed, maMax);
mem += BusManager::memUsage(bc);
if (useGlobalLedBuffer && start + length > maxlen) {
maxlen = start + length;
globalBufMem = maxlen * 4;
}
if (mem + globalBufMem <= MAX_LED_MEMORY) if (BusManager::add(bc) == -1) break; // finalization will be done in WLED::beginStrip()
if (useParallel && s < 8) {
// we are using parallel I2S and memUsage() will include x8 allocation into account
if (s == 0)
mem = BusManager::memUsage(bc); // includes x8 memory allocation for parallel I2S
else
if (BusManager::memUsage(bc) > mem)
mem = BusManager::memUsage(bc); // if we have unequal LED count use the largest
} else
mem += BusManager::memUsage(bc); // includes global buffer
if (mem <= MAX_LED_MEMORY) if (BusManager::add(bc) == -1) break; // finalization will be done in WLED::beginStrip()
} else {
if (busConfigs[s] != nullptr) delete busConfigs[s];
busConfigs[s] = new BusConfig(ledType, pins, start, length, colorOrder, reversed, skipFirst, AWmode, freqkHz, useGlobalLedBuffer, maPerLed, maMax);
@@ -206,6 +234,8 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
}
s++;
}
DEBUG_PRINTF_P(PSTR("LED buffer size: %uB\n"), mem);
DEBUG_PRINTF_P(PSTR("Heap after buses: %d\n"), ESP.getFreeHeap());
doInitBusses = busesChanged;
// finalization done in beginStrip()
}
@@ -215,7 +245,7 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
JsonArray hw_com = hw[F("com")];
if (!hw_com.isNull()) {
ColorOrderMap com = {};
uint8_t s = 0;
unsigned s = 0;
for (JsonObject entry : hw_com) {
if (s > WLED_MAX_COLOR_ORDER_MAPPINGS) break;
uint16_t start = entry["start"] | 0;
@@ -234,10 +264,9 @@ bool deserializeConfig(JsonObject doc, bool fromFS) {
disablePullUp = !pull;
JsonArray hw_btn_ins = btn_obj["ins"];
if (!hw_btn_ins.isNull()) {
for (uint8_t b = 0; b < WLED_MAX_BUTTONS; b++) { // deallocate existing button pins
pinManager.deallocatePin(btnPin[b], PinOwner::Button); // does nothing if trying to deallocate a pin with PinOwner != Button
}
uint8_t s = 0;
// deallocate existing button pins
for (unsigned b = 0; b < WLED_MAX_BUTTONS; b++) pinManager.deallocatePin(btnPin[b], PinOwner::Button); // does nothing if trying to deallocate a pin with PinOwner != Button
unsigned s = 0;
for (JsonObject btn : hw_btn_ins) {
CJSON(buttonType[s], btn["type"]);
int8_t pin = btn["pin"][0] | -1;