wip2

firmware/lib/systems.c

@@ -166,6 +166,45 @@ void ConfigureUART()
 	NVIC_Init(&NVIC_InitStruct);*/
 }
 
+void ConfigureDMX()
+{
+	GPIO_InitTypeDef GPIO_InitStruct;
+	USART_InitTypeDef USART_InitStruct;
+
+	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
+
+	// Set up UART GPIOs
+	GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_USART2);
+	GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_USART2);
+
+	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
+	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
+	GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
+	GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
+	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;
+	GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+	// Set up control GPIOs	
+	GPIO_StructInit(&GPIO_InitStruct);
+	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
+	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;
+	GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
+	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_100MHz;
+	GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+	// Set up UART
+	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
+
+	USART_InitStruct.USART_BaudRate = 250000;
+	USART_InitStruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
+	USART_InitStruct.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
+	USART_InitStruct.USART_Parity = USART_Parity_No;
+	USART_InitStruct.USART_StopBits = USART_StopBits_2;
+	USART_InitStruct.USART_WordLength = USART_WordLength_8b;
+	USART_Init(USART2, &USART_InitStruct);
+	USART_Cmd(USART2, ENABLE);
+}
+
 void ConfigureLED()
 {
 	ConfigureGPIO(LED_RED, INOUT_OUT);

firmware/lib/systems.h

@@ -57,7 +57,13 @@ void ConfigureGPIO( gpio gpio, int parameters );
 #define LED_BLUE (LEDPIN+1)
 #define LED_RED (LEDPIN+2)
 
+#define DMX_TX_EN GPIOOn(1)
+#define DMX_TX_DIS GPIOOff(1)
+#define DMX_RX_EN GPIOOff(0)
+#define DMX_RX_DIS GPIOOn(0)
+
 void ConfigureUART();
+void ConfigureDMX();
 void ConfigureLED();
 
 void JumpToBootloader(void);

firmware/main.c

@@ -111,6 +111,24 @@ void EXTI0_IRQHandler(void)
     }
 }
 
+void test()
+{
+	int i;
+	char str[] = "AAAATest\r\n";
+	char *buf;
+	
+	DMX_TX_EN;
+
+	while (1) {
+		buf = str;	
+		for (i=strlen(buf); i > 0; --i) {
+			while (!(USART2->SR & USART_SR_TXE));
+			USART2->DR = (uint16_t)(*((char*) buf) & 0x01FF);
+			buf++;
+		}
+	}
+}
+
 int main(void)
 {  
 	uint32_t i = 0;
@@ -125,6 +143,7 @@ int main(void)
 	float fv = RCC_Clocks.HCLK_Frequency / 1000000.0f;
 
 	ConfigureUART();
+	ConfigureDMX();
 	InitColorChord();
 	Configure_PA0();
 	InitSPI2812();
@@ -138,6 +157,7 @@ int main(void)
 	
 	int c = 1;
 	LED_ON(LED_RED);
+	test();
 	while (1) {
 		for (int a=0; a < NUM_LIN_LEDS; a++) {
 			ledOut[a*3 + 0] = c/2;