Display write and setPosition

Core/Src/Components/ILI9341.cpp

@@ -37,32 +37,50 @@ int32_t ILI9341::init() {
 		// Wrong ID
 		return -1;
 	}
+	/*
 	uint8_t idn[3];
 	errors += readReg8(0xDA, idn);
 	errors += readReg8(0xDB, idn+1);
 	errors += readReg8(0xDC, idn+2);
-	writeBuffer(0x11, nullptr, 0);
+	*/
+	errors += writeBuffer(0x11, nullptr, 0);	// Sleep out
 	vTaskDelay(5);
-	uint8_t buf[720];
-	uint8_t pasetBuf[4];
-	for(uint16_t i = 0; i<320; i++){
-		pasetBuf[0] = (i>>8);
-		pasetBuf[1] = i;
-		pasetBuf[2] = 319>>8;
-		pasetBuf[3] = 319;
-		writeBuffer(0x2B, pasetBuf, 4);
-		for(uint32_t j = 0; j<720; j++){
-			buf[j] = (j%64)<<2;
-		}
-		writeBuffer(0x2C, buf, 720);
-	}
-	writeBuffer(0x29, nullptr, 0);
+	/*
 	uint32_t status;
 	errors += readReg32(0x09, &status);
-	errors += hLedPwm->setDuty(1);
+	*/
+	errors += writeBuffer(0x29, nullptr, 0);	// Display on
+	setBacklight(0);
 	return errors;
 }
 
+int32_t ILI9341::setPosition(uint16_t xPosition, uint16_t yPosition, uint16_t xSize, uint16_t ySize) {
+	int32_t errors = 0;
+	uint8_t casetBuf[4];
+	casetBuf[0] = (xPosition>>8);
+	casetBuf[1] = xPosition;
+	casetBuf[2] = ((xPosition+xSize-1)>>8);
+	casetBuf[3] = (xPosition+xSize-1);
+	errors += writeBuffer(0x2A, casetBuf, 4);
+	uint8_t pasetBuf[4];
+	pasetBuf[0] = (yPosition>>8);
+	pasetBuf[1] = yPosition;
+	pasetBuf[2] = ((yPosition+ySize-1)>>8);
+	pasetBuf[3] = (yPosition+ySize-1);
+	errors += writeBuffer(0x2B, pasetBuf, 4);
+	return errors;
+}
+
+int32_t ILI9341::write(uint8_t* buffer, uint32_t length) {
+	return writeBuffer(0x2C, buffer, length);
+}
+
+
+
+int32_t ILI9341::setBacklight(float backlight) {
+	return hLedPwm->setDuty(backlight);
+}
+
 // Private methods
 
 int32_t ILI9341::readReg8(uint8_t command, uint8_t* reg) {

Core/Src/Components/ILI9341.hpp

@@ -20,6 +20,9 @@ public:
 	ILI9341(SPI_Peripheral* hSpi, GPIO_Pin* nssPin, GPIO_Pin* hResetPin, GPIO_Pin* hDcrsPin, PWM_Pin* hLedPwm);
 	virtual ~ILI9341();
 	int32_t init();
+	int32_t setPosition(uint16_t xPosition, uint16_t yPosition, uint16_t xSize, uint16_t ySize);
+	int32_t write(uint8_t* buffer, uint32_t length);
+	int32_t setBacklight(float backlight);
 private:
 	int32_t readReg8(uint8_t command, uint8_t* reg);
 	int32_t readReg24(uint8_t command, uint32_t* reg);
@@ -30,8 +33,8 @@ private:
 	GPIO_Pin* hResetPin;
 	GPIO_Pin* hDcrsPin;
 	PWM_Pin* hLedPwm;
-	uint8_t txBuffer[16384];
-	uint8_t rxBuffer[16384];
+	uint8_t txBuffer[16];
+	uint8_t rxBuffer[16];
 };
 
 #endif /* SRC_COMPONENTS_ILI9341_HPP_ */

Core/Src/Components/start.cpp

@@ -22,16 +22,26 @@ GPIO_Pin_STM32 ledBlue(LD6_GPIO_Port, LD6_Pin);
 //GPIO_Pin_STM32* discoveryLedArray[4] = {&ledOrange, &ledGreen, &ledRed, &ledBlue};
 BinLeds discoveryLeds((GPIO_Pin*[]){&ledOrange, &ledGreen, &ledRed, &ledBlue}, 4);
 
-SPI_Peripheral_STM32 spi_a(&hspi5, 100);
+SPI_Peripheral_STM32 spi_a(&hspi5, 1000);
 GPIO_Pin_STM32 displayNss(DISPLAY_NSS_GPIO_Port, DISPLAY_NSS_Pin);
 GPIO_Pin_STM32 displayReset(DISPLAY_RESET_GPIO_Port, DISPLAY_RESET_Pin);
 GPIO_Pin_STM32 displayDcrs(DISPLAY_DCRS_GPIO_Port, DISPLAY_DCRS_Pin);
 PWM_Pin_STM32 displayLed(&htim10, TIM_CHANNEL_1);
 ILI9341 display(&spi_a, &displayNss, &displayReset, &displayDcrs, &displayLed);
 
+uint8_t buffer[19200];
+
 void start(){
 	spi_a.init();
 	display.init();
+	display.setBacklight(1);
+	for(uint32_t i = 0; i<19200; i++){
+		buffer[i] = 32<<2;
+	}
+	display.setPosition(0, 0, 80, 80);
+	display.write(buffer, 19200);
+	display.setPosition(0, 80, 80, 80);
+	display.write(buffer, 19200);
 	for(uint32_t i=0; i<16; i++){
 		discoveryLeds.set(i);
 		vTaskDelay(1000);

Core/Src/spi.c

@@ -79,7 +79,7 @@ void MX_SPI5_Init(void)
   hspi5.Init.CLKPolarity = SPI_POLARITY_LOW;
   hspi5.Init.CLKPhase = SPI_PHASE_1EDGE;
   hspi5.Init.NSS = SPI_NSS_SOFT;
-  hspi5.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_64;
+  hspi5.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
   hspi5.Init.FirstBit = SPI_FIRSTBIT_MSB;
   hspi5.Init.TIMode = SPI_TIMODE_DISABLE;
   hspi5.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;

F411VE-ILI9341.ioc

@@ -440,8 +440,8 @@ SPI1.Direction=SPI_DIRECTION_2LINES
 SPI1.IPParameters=CalculateBaudRate,BaudRatePrescaler,Mode,VirtualType,Direction
 SPI1.Mode=SPI_MODE_MASTER
 SPI1.VirtualType=VM_MASTER
-SPI5.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_64
-SPI5.CalculateBaudRate=1.5 MBits/s
+SPI5.BaudRatePrescaler=SPI_BAUDRATEPRESCALER_16
+SPI5.CalculateBaudRate=6.0 MBits/s
 SPI5.Direction=SPI_DIRECTION_2LINES
 SPI5.IPParameters=VirtualType,Mode,Direction,CalculateBaudRate,BaudRatePrescaler
 SPI5.Mode=SPI_MODE_MASTER