Diff: FT_Gpu_Hal.cpp

Revision:

0:352efe1d072f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FT_Gpu_Hal.cpp	Mon Mar 11 19:14:19 2019 +0000
@@ -0,0 +1,551 @@
+/* mbed Library for FTDI FT800  Enbedded Video Engine "EVE"
+ * based on Original Code Sample from FTDI
+ * ported to mbed by Peter Drescher, DC2PD 2014
+ * Released under the MIT License: http://mbed.org/license/mit 
+ * 19.09.14 changed to shorter function names  
+ * FTDI was using very long names. 
+ * Ft_App_Flush_Co_Buffer -> Flush_Co_Buffer ...  */
+
+#include "FT_Platform.h"
+#include "mbed.h"
+#include "FT_LCD_Type.h"
+
+FT800::FT800(PinName mosi,
+			PinName miso,
+			PinName sck,
+			PinName ss,
+			PinName intr,
+			PinName pd)
+	:_spi(mosi, miso, sck),
+	 _ss(ss),
+	 _f800_isr(InterruptIn(intr)),
+	 _pd(pd)
+	 {
+	 	 _spi.format(8,0);                  // 8 bit spi mode 0
+    	 _spi.frequency(10000000);          // start with 10 Mhz SPI clock
+    	 _ss = 1;                           // cs high
+    	 _pd = 1;                           // PD high
+		 Bootup();
+	 }
+
+
+ft_bool_t FT800::Bootup(void){
+	Open();
+	BootupConfig();
+
+	return(1);
+	}
+
+
+ft_void_t FT800::BootupConfig(void){
+	ft_uint8_t chipid;
+	/* Do a power cycle for safer side */
+	Powercycle( FT_TRUE);
+
+	/* Access address 0 to wake up the FT800 */
+	HostCommand( FT_GPU_ACTIVE_M);
+	Sleep(20);
+
+	/* Set the clk to external clock */
+	HostCommand( FT_GPU_EXTERNAL_OSC);
+	Sleep(10);
+
+
+	/* Switch PLL output to 48MHz */
+	HostCommand( FT_GPU_PLL_48M);
+	Sleep(10);
+
+	/* Do a core reset for safer side */
+	HostCommand( FT_GPU_CORE_RESET);
+
+	//Read Register ID to check if FT800 is ready.
+	chipid = Rd8(  REG_ID);
+	while(chipid != 0x7C)
+		chipid = Rd8(  REG_ID);
+
+
+	// Speed up
+	_spi.frequency(16000000);           // 20 Mhz SPI clock
+
+	/* Configuration of LCD display */
+    DispHCycle = my_DispHCycle;
+    Wr16(  REG_HCYCLE, DispHCycle);
+    DispHOffset = my_DispHOffset;
+    Wr16(  REG_HOFFSET, DispHOffset);
+    DispWidth = my_DispWidth;
+    Wr16(  REG_HSIZE, DispWidth);
+    DispHSync0 = my_DispHSync0;
+    Wr16(  REG_HSYNC0, DispHSync0);
+    DispHSync1 = my_DispHSync1;
+    Wr16(  REG_HSYNC1, DispHSync1);
+    DispVCycle = my_DispVCycle;
+    Wr16(  REG_VCYCLE, DispVCycle);
+    DispVOffset = my_DispVOffset;
+    Wr16(  REG_VOFFSET, DispVOffset);
+    DispHeight = my_DispHeight;
+    Wr16(  REG_VSIZE, DispHeight);
+    DispVSync0 = my_DispVSync0;
+    Wr16(  REG_VSYNC0, DispVSync0);
+    DispVSync1 = my_DispVSync1;
+    Wr16(  REG_VSYNC1, DispVSync1);
+    DispSwizzle = my_DispSwizzle;
+    Wr8(  REG_SWIZZLE, DispSwizzle);
+    DispPCLKPol = my_DispPCLKPol;
+    Wr8(  REG_PCLK_POL, DispPCLKPol);
+    Wr8(  REG_CSPREAD, 1);
+    DispPCLK = my_DispPCLK;
+    Wr8(  REG_PCLK, DispPCLK);//after this display is visible on the LCD
+
+	Wr16(  REG_PWM_HZ, 1000);
+
+#ifdef Inv_Backlite	              // turn on backlite
+	Wr16(  REG_PWM_DUTY, 0);
+#else
+	Wr16(  REG_PWM_DUTY, 100);
+#endif
+
+    Wr8(  REG_GPIO_DIR,0x82);  //| Rd8( REG_GPIO_DIR));
+    Wr8(  REG_GPIO,0x080);     //| Rd8( REG_GPIO));
+
+	Wr32(  RAM_DL, CLEAR(1,1,1));
+	Wr32(  RAM_DL+4, DISPLAY());
+	Wr32(  REG_DLSWAP,1);
+
+	Wr16(  REG_PCLK, DispPCLK);
+
+    /* Touch configuration - configure the resistance value to 1200 - this value is specific to customer requirement and derived by experiment */
+    Wr16(  REG_TOUCH_RZTHRESH,1200);
+
+}
+
+
+
+/* API to initialize the SPI interface */
+ft_bool_t  FT800::Init()
+{
+	// is done in constructor
+	return 1;
+}
+
+
+ft_bool_t  FT800::Open()
+{
+	cmd_fifo_wp = dl_buff_wp = 0;
+	status = OPENED;
+	return 1;
+}
+
+ft_void_t  FT800::Close( )
+{
+	status = CLOSED;
+}
+
+ft_void_t FT800::DeInit()
+{
+
+}
+
+/*The APIs for reading/writing transfer continuously only with small buffer system*/
+ft_void_t  FT800::StartTransfer( FT_GPU_TRANSFERDIR_T rw,ft_uint32_t addr)
+{
+	if (FT_GPU_READ == rw){
+		_ss = 0;       // cs low
+		_spi.write(addr >> 16);
+		_spi.write(addr >> 8);
+		_spi.write(addr & 0xff);
+		_spi.write(0); //Dummy Read Byte
+		status = READING;
+	}else{
+		_ss = 0;       // cs low
+		_spi.write(0x80 | (addr >> 16));
+		_spi.write(addr >> 8);
+		_spi.write(addr & 0xff);
+		status = WRITING;
+	}
+}
+
+
+/*The APIs for writing transfer continuously only*/
+ft_void_t  FT800::StartCmdTransfer( FT_GPU_TRANSFERDIR_T rw, ft_uint16_t count)
+{
+	StartTransfer( rw, cmd_fifo_wp + RAM_CMD);
+}
+
+ft_uint8_t  FT800::TransferString( const ft_char8_t *string)
+{
+    ft_uint16_t length = strlen(string);
+    while(length --){
+       Transfer8( *string);
+       string ++;
+    }
+    //Append one null as ending flag
+    Transfer8( 0);
+    return(1);
+}
+
+
+ft_uint8_t  FT800::Transfer8( ft_uint8_t value)
+{
+        return _spi.write(value);
+}
+
+
+ft_uint16_t  FT800::Transfer16( ft_uint16_t value)
+{
+	ft_uint16_t retVal = 0;
+
+        if (status == WRITING){
+		Transfer8( value & 0xFF);//LSB first
+		Transfer8( (value >> 8) & 0xFF);
+	}else{
+		retVal = Transfer8( 0);
+		retVal |= (ft_uint16_t)Transfer8( 0) << 8;
+	}
+
+	return retVal;
+}
+
+ft_uint32_t  FT800::Transfer32( ft_uint32_t value)
+{
+	ft_uint32_t retVal = 0;
+	if (status == WRITING){
+		Transfer16( value & 0xFFFF);//LSB first
+		Transfer16( (value >> 16) & 0xFFFF);
+	}else{
+		retVal = Transfer16( 0);
+		retVal |= (ft_uint32_t)Transfer16( 0) << 16;
+	}
+	return retVal;
+}
+
+ft_void_t   FT800::EndTransfer( )
+{
+	_ss = 1;
+	status = OPENED;
+}
+
+
+ft_uint8_t  FT800::Rd8( ft_uint32_t addr)
+{
+	ft_uint8_t value;
+	StartTransfer( FT_GPU_READ,addr);
+	value = Transfer8( 0);
+	EndTransfer( );
+	return value;
+}
+ft_uint16_t FT800::Rd16( ft_uint32_t addr)
+{
+	ft_uint16_t value;
+	StartTransfer( FT_GPU_READ,addr);
+	value = Transfer16( 0);
+	EndTransfer( );
+	return value;
+}
+ft_uint32_t FT800::Rd32( ft_uint32_t addr)
+{
+	ft_uint32_t value;
+	StartTransfer( FT_GPU_READ,addr);
+	value = Transfer32( 0);
+	EndTransfer( );
+	return value;
+}
+
+ft_void_t FT800::Wr8( ft_uint32_t addr, ft_uint8_t v)
+{
+	StartTransfer( FT_GPU_WRITE,addr);
+	Transfer8( v);
+	EndTransfer( );
+}
+ft_void_t FT800::Wr16( ft_uint32_t addr, ft_uint16_t v)
+{
+	StartTransfer( FT_GPU_WRITE,addr);
+	Transfer16( v);
+	EndTransfer( );
+}
+ft_void_t FT800::Wr32( ft_uint32_t addr, ft_uint32_t v)
+{
+	StartTransfer( FT_GPU_WRITE,addr);
+	Transfer32( v);
+	EndTransfer( );
+}
+
+ft_void_t FT800::HostCommand( ft_uint8_t cmd)
+{
+  _ss = 0;
+  _spi.write(cmd);
+  _spi.write(0);
+  _spi.write(0);
+  _ss = 1;
+}
+
+ft_void_t FT800::ClockSelect( FT_GPU_PLL_SOURCE_T pllsource)
+{
+   HostCommand( pllsource);
+}
+
+ft_void_t FT800::PLL_FreqSelect( FT_GPU_PLL_FREQ_T freq)
+{
+   HostCommand( freq);
+}
+
+ft_void_t FT800::PowerModeSwitch( FT_GPU_POWER_MODE_T pwrmode)
+{
+   HostCommand( pwrmode);
+}
+
+ft_void_t FT800::CoreReset( )
+{
+   HostCommand( 0x68);
+}
+
+
+ft_void_t FT800::Updatecmdfifo( ft_uint16_t count)
+{
+	 cmd_fifo_wp  = ( cmd_fifo_wp + count) & 4095;
+	//4 byte alignment
+	 cmd_fifo_wp = ( cmd_fifo_wp + 3) & 0xffc;
+	Wr16( REG_CMD_WRITE, cmd_fifo_wp);
+}
+
+
+ft_uint16_t FT800::fifo_Freespace( )
+{
+	ft_uint16_t fullness,retval;
+
+	fullness = ( cmd_fifo_wp - Rd16( REG_CMD_READ)) & 4095;
+	retval = (FT_CMD_FIFO_SIZE - 4) - fullness;
+	return (retval);
+}
+
+ft_void_t FT800::WrCmdBuf( ft_uint8_t *buffer,ft_uint16_t count)
+{
+	ft_uint32_t length =0, SizeTransfered = 0;
+
+#define MAX_CMD_FIFO_TRANSFER   fifo_Freespace( )
+	do {
+		length = count;
+		if (length > MAX_CMD_FIFO_TRANSFER){
+		    length = MAX_CMD_FIFO_TRANSFER;
+		}
+      	        CheckCmdBuffer( length);
+
+                StartCmdTransfer( FT_GPU_WRITE,length);
+
+                SizeTransfered = 0;
+		while (length--) {
+                    Transfer8( *buffer);
+		    		buffer++;
+                    SizeTransfered ++;
+		}
+                length = SizeTransfered;
+
+		EndTransfer( );
+		Updatecmdfifo( length);
+
+		WaitCmdfifo_empty( );
+
+		count -= length;
+	}while (count > 0);
+}
+
+
+ft_void_t FT800::WrCmdBufFromFlash( FT_PROGMEM ft_prog_uchar8_t *buffer,ft_uint16_t count)
+{
+	ft_uint32_t length =0, SizeTransfered = 0;
+
+#define MAX_CMD_FIFO_TRANSFER   fifo_Freespace( )
+	do {
+		length = count;
+		if (length > MAX_CMD_FIFO_TRANSFER){
+		    length = MAX_CMD_FIFO_TRANSFER;
+		}
+      	        CheckCmdBuffer( length);
+
+                StartCmdTransfer( FT_GPU_WRITE,length);
+
+
+                SizeTransfered = 0;
+		while (length--) {
+                    Transfer8( ft_pgm_read_byte_near(buffer));
+		    buffer++;
+                    SizeTransfered ++;
+		}
+                length = SizeTransfered;
+
+    	        EndTransfer( );
+		Updatecmdfifo( length);
+
+		WaitCmdfifo_empty( );
+
+		count -= length;
+	}while (count > 0);
+}
+
+
+ft_void_t FT800::CheckCmdBuffer( ft_uint16_t count)
+{
+   ft_uint16_t getfreespace;
+   do{
+        getfreespace = fifo_Freespace( );
+   }while(getfreespace < count);
+}
+
+ft_void_t FT800::WaitCmdfifo_empty( )
+{
+   while(Rd16( REG_CMD_READ) != Rd16( REG_CMD_WRITE));
+
+    cmd_fifo_wp = Rd16( REG_CMD_WRITE);
+}
+
+ft_void_t FT800::WaitLogo_Finish( )
+{
+    ft_int16_t cmdrdptr,cmdwrptr;
+
+    do{
+         cmdrdptr = Rd16( REG_CMD_READ);
+         cmdwrptr = Rd16( REG_CMD_WRITE);
+    }while ((cmdwrptr != cmdrdptr) || (cmdrdptr != 0));
+     cmd_fifo_wp = 0;
+}
+
+
+ft_void_t FT800::ResetCmdFifo( )
+{
+    cmd_fifo_wp = 0;
+}
+
+
+ft_void_t FT800::WrCmd32( ft_uint32_t cmd)
+{
+         CheckCmdBuffer( sizeof(cmd));
+
+         Wr32( RAM_CMD +  cmd_fifo_wp,cmd);
+
+         Updatecmdfifo( sizeof(cmd));
+}
+
+
+ft_void_t FT800::ResetDLBuffer( )
+{
+            dl_buff_wp = 0;
+}
+
+/* Toggle PD_N pin of FT800 board for a power cycle*/
+ft_void_t FT800::Powercycle(  ft_bool_t up)
+{
+	if (up)
+	{
+             //Toggle PD_N from low to high for power up switch
+            _pd = 0;
+            Sleep(20);
+
+            _pd = 1;
+            Sleep(20);
+	}else
+	{
+             //Toggle PD_N from high to low for power down switch
+            _pd = 1;
+            Sleep(20);
+
+            _pd = 0;
+            Sleep(20);
+	}
+}
+
+ft_void_t FT800::WrMemFromFlash( ft_uint32_t addr,const ft_prog_uchar8_t *buffer, ft_uint32_t length)
+{
+	//ft_uint32_t SizeTransfered = 0;
+
+	StartTransfer( FT_GPU_WRITE,addr);
+
+	while (length--) {
+            Transfer8( ft_pgm_read_byte_near(buffer));
+	    buffer++;
+	}
+
+	EndTransfer( );
+}
+
+ft_void_t FT800::WrMem( ft_uint32_t addr,const ft_uint8_t *buffer, ft_uint32_t length)
+{
+	//ft_uint32_t SizeTransfered = 0;
+
+	StartTransfer( FT_GPU_WRITE,addr);
+
+	while (length--) {
+            Transfer8( *buffer);
+	    buffer++;
+	}
+
+	EndTransfer( );
+}
+
+
+ft_void_t FT800::RdMem( ft_uint32_t addr, ft_uint8_t *buffer, ft_uint32_t length)
+{
+	//ft_uint32_t SizeTransfered = 0;
+
+	StartTransfer( FT_GPU_READ,addr);
+
+	while (length--) {
+	   *buffer = Transfer8( 0);
+	   buffer++;
+	}
+
+	EndTransfer( );
+}
+
+ft_int32_t FT800::Dec2Ascii(ft_char8_t *pSrc,ft_int32_t value)
+{
+	ft_int16_t Length;
+	ft_char8_t *pdst,charval;
+	ft_int32_t CurrVal = value,tmpval,i;
+	ft_char8_t tmparray[16],idx = 0;
+
+	Length = strlen(pSrc);
+	pdst = pSrc + Length;
+
+	if(0 == value)
+	{
+		*pdst++ = '0';
+		*pdst++ = '\0';
+		return 0;
+	}
+
+	if(CurrVal < 0)
+	{
+		*pdst++ = '-';
+		CurrVal = - CurrVal;
+	}
+	/* insert the value */
+	while(CurrVal > 0){
+		tmpval = CurrVal;
+		CurrVal /= 10;
+		tmpval = tmpval - CurrVal*10;
+		charval = '0' + tmpval;
+		tmparray[idx++] = charval;
+	}
+
+	for(i=0;i<idx;i++)
+	{
+		*pdst++ = tmparray[idx - i - 1];
+	}
+	*pdst++ = '\0';
+
+	return 0;
+}
+
+
+ft_void_t FT800::Sleep(ft_uint16_t ms)
+{
+	wait_ms(ms);
+}
+
+ft_void_t FT800::Sound_ON(){
+	 Wr8(  REG_GPIO, 0x02 | Rd8( REG_GPIO));
+}
+
+ft_void_t FT800::Sound_OFF(){
+	 Wr8(  REG_GPIO, 0xFD & Rd8( REG_GPIO));
+}
+