Numerous mods for ws2812b to no avail.

Author: tvdzwan

libsrc/leddevice/LedDeviceWs2812b.cpp

@@ -6,7 +6,7 @@
 #include "LedDeviceWs2812b.h"
 
 LedDeviceWs2812b::LedDeviceWs2812b() :
-	LedRs232Device("/dev/ttyAMA0", 2000000)
+	LedRs232Device("/dev/ttyUSB0", 2000000)
 {
 	// empty
 }

libsrc/leddevice/LedRs232Device.cpp

@@ -31,6 +31,7 @@ int LedRs232Device::open()
 {
 	try
 	{
+		std::cout << "Opening UART: " << mDeviceName << std::endl;
 		_rs232Port.setPort(mDeviceName);
 		_rs232Port.setBaudrate(mBaudRate_Hz);
 		_rs232Port.open();

test/TestNonInvWs2812b.cpp

@@ -62,7 +62,7 @@ void printClockSignal(const std::vector<uint8_t> & signal)
 
 int main()
 {
-	const std::vector<uint8_t> data(9, 0xff);
+	const std::vector<uint8_t> data(9, 0x00);
 	std::vector<uint8_t> encData = encode(data);
 
 	for (uint8_t encByte : encData)
@@ -88,19 +88,19 @@ int main()
 	// Configure the port
 	struct termios options;
 	tcgetattr(uart0_filestream, &options);
-	options.c_cflag = B4000000 | CS8 | CLOCAL;
+	options.c_cflag = B2500000 | CS8 | CLOCAL;
 	options.c_iflag = IGNPAR;
 	options.c_oflag = 0;
 	options.c_lflag = 0;
 
 	tcflush(uart0_filestream, TCIFLUSH);
 	tcsetattr(uart0_filestream, TCSANOW, &options);
 
-	char c = getchar();
+	getchar();
 
 	const int breakLength_ms = 1;
 
-	encData = std::vector<uint8_t>(128, 0x10);
+	encData = std::vector<uint8_t>(128, 0x00);
 
 	write(uart0_filestream, encData.data(), encData.size());
 

test/TestNonUniformWs2812b.cpp

@@ -46,7 +46,7 @@ void printClockSignal(const std::vector<uint8_t> & signal)
 
 int main()
 {
-	const std::vector<uint8_t> white{0xff, 0xff, 0xff};
+	const std::vector<uint8_t> white{0xff,0xff,0xff, 0xff,0xff,0xff, 0xff,0xff,0xff};
 	const std::vector<uint8_t> green{0xff, 0x00, 0x00};
 	const std::vector<uint8_t> red  {0x00, 0xff, 0x00};
 	const std::vector<uint8_t> blue {0x00, 0x00, 0xff};
@@ -87,20 +87,22 @@ int main()
 		const std::vector<uint8_t> encBlackData = encode(black);
 
 		//std::cout << "Writing GREEN ("; printClockSignal(encode(green)); std::cout << ")" << std::endl;
-		const std::vector<uint8_t> garbage {0x0f};
-		write(uart0_filestream, garbage.data(), garbage.size());
-		write(uart0_filestream, encGreenData.data(), encGreenData.size());
-		write(uart0_filestream, encRedData.data(), encRedData.size());
-		write(uart0_filestream, encBlueData.data(), encBlueData.size());
-		write(uart0_filestream, encGrayData.data(), encGrayData.size());
-		write(uart0_filestream, encBlackData.data(), encBlackData.size());
-	}
-	{
-		getchar();
+//		const std::vector<uint8_t> garbage {0x0f};
+//		write(uart0_filestream, garbage.data(), garbage.size());
+//		write(uart0_filestream, encGreenData.data(), encGreenData.size());
+//		write(uart0_filestream, encRedData.data(), encRedData.size());
+//		write(uart0_filestream, encBlueData.data(), encBlueData.size());
+//		write(uart0_filestream, encGrayData.data(), encGrayData.size());
+//		write(uart0_filestream, encBlackData.data(), encBlackData.size());
+//	}
+//	{
+//		getchar();
 		const std::vector<uint8_t> encData = encode(white);
 		std::cout << "Writing WHITE ("; printClockSignal(encode(white)); std::cout << ")" << std::endl;
-		const std::vector<uint8_t> garbage {0x0f};
-		write(uart0_filestream, garbage.data(), garbage.size());
+//		const std::vector<uint8_t> garbage {0x0f};
+//		write(uart0_filestream, garbage.data(), garbage.size());
+		write(uart0_filestream, encData.data(), encData.size());
+		write(uart0_filestream, encData.data(), encData.size());
 		write(uart0_filestream, encData.data(), encData.size());
 	}
 	{