Add HyperSPI support for RPi Pico (rp2040)

sources/leddevice/dev_spi/LedDeviceAWA_spi.cpp

@@ -106,6 +106,8 @@ int LedDeviceAWA_spi::write(const std::vector<ColorRgb>& ledValues)
 		return writeBytesEsp8266(bufferLength, _ledBuffer.data());
 	else if (_spiType == "esp32")
 		return writeBytesEsp32(bufferLength, _ledBuffer.data());
+	else if (_spiType == "rp2040")
+		return writeBytesRp2040(bufferLength, _ledBuffer.data());
 	else
 		return writeBytes(bufferLength, _ledBuffer.data());
 }

sources/leddevice/dev_spi/ProviderSpi.cpp

@@ -190,6 +190,42 @@ int ProviderSpi::writeBytesEsp8266(unsigned size, const uint8_t* data)
 	return retVal;
 }
 
+int ProviderSpi::writeBytesRp2040(unsigned size, const uint8_t* data)
+{
+	// try to use constant buffer size similar to esp32
+	static const int      REAL_BUFFER = 1536;
+	static const uint32_t BUFFER_SIZE = REAL_BUFFER + 8;
+
+	uint8_t* startData = (uint8_t*)data;
+	uint8_t* endData = (uint8_t*)data + size;
+	uint8_t buffer[BUFFER_SIZE];
+
+	if (_fid < 0)
+	{
+		return -1;
+	}
+
+	_spi.tx_buf = __u64(&buffer);
+	_spi.len = __u32(BUFFER_SIZE);
+	_spi.delay_usecs = 0;
+
+	int retVal = 0;
+
+	while (retVal >= 0 && startData < endData)
+	{
+		memset(buffer, 0, sizeof(buffer));
+		for (int i = 0; i < REAL_BUFFER && startData < endData; i++, startData++)
+		{
+			buffer[i] = *startData;
+		}
+		buffer[REAL_BUFFER] = 0xAA;
+		retVal = ioctl(_fid, SPI_IOC_MESSAGE(1), &_spi);
+		ErrorIf((retVal < 0), _log, "SPI failed to write. errno: %d, %s", errno, strerror(errno));
+	}
+
+	return retVal;
+}
+
 int ProviderSpi::writeBytesEsp32(unsigned size, const uint8_t* data)
 {
 	static const int      REAL_BUFFER = 1536;

sources/leddevice/dev_spi/ProviderSpi.h

@@ -63,6 +63,9 @@ public slots:
 	// esp32 spi packet protocol
 	int writeBytesEsp32(unsigned size, const uint8_t* data);
 
+	// rp2040 spi packet protocol
+	int writeBytesRp2040(unsigned size, const uint8_t* data);
+
 	/// The name of the output device
 	QString _deviceName;
 

sources/leddevice/schemas/schema-awa_spi.json

@@ -93,9 +93,9 @@
 		"spitype": {
 			"type": "string",
 			"title":"edt_conf_smooth_type_title",
-			"enum" : ["esp8266","esp32","standard"],
+			"enum" : ["esp8266","esp32","rp2040","standard"],
 			"options" : {
-				"enum_titles" : ["esp8266","esp32","standard"]
+				"enum_titles" : ["esp8266","esp32","Raspberry Pi Pico (rp2040)","standard"]
 			},
 			"default" : "esp8266",
 			"required" : true,