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Add a basic USB CDC example using LPCUSB.

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This commit is contained in:
Richard Barry 2009-08-07 14:35:24 +00:00
parent d2a29ece23
commit a83d9d93e8
15 changed files with 2402 additions and 40 deletions
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116
Demo/CORTEX_LPC1768_GCC_RedSuite/src/main.c
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@ -46,7 +46,7 @@
*/
#error The batch file Demo\CORTEX_LPC1768_GCC_RedSuite\CreateProjectDirectoryStructure.bat must be executed before the first build. After executing the batch file hit F5 to refrech the Eclipse project, then delete this line.
//#error The batch file Demo\CORTEX_LPC1768_GCC_RedSuite\CreateProjectDirectoryStructure.bat must be executed before the first build. After executing the batch file hit F5 to refrech the Eclipse project, then delete this line.
@ -66,6 +66,11 @@
*
* "uIP" task - This is the task that handles the uIP stack. All TCP/IP
* processing is performed in this task.
*
* "USB" task - Enumerates the USB device as a CDC class, then echoes back all
* received characters with a configurable offset (for example, if the offset
* is 1 and 'A' is received then 'B' will be sent back). A dumb terminal such
* as Hyperterminal can be used to talk to the USB task.
*/
/* Standard includes. */
@ -127,6 +132,11 @@ static void prvSetupHardware( void );
*/
extern void vuIP_Task( void *pvParameters );
/*
* The task that handles the USB stack.
*/
extern void vUSBTask( void *pvParameters );
/*
* Simply returns the current status message for display on served WEB pages.
*/
@ -158,6 +168,9 @@ char cIPAddress[ 16 ]; /* Enough space for "xxx.xxx.xxx.xxx\0". */
vStartRecursiveMutexTasks();
vStartLEDFlashTasks( mainFLASH_TASK_PRIORITY );
/* Create the USB task. */
xTaskCreate( vUSBTask, ( signed char * ) "USB", configMINIMAL_STACK_SIZE, ( void * ) NULL, tskIDLE_PRIORITY, NULL );
/* Display the IP address, then create the uIP task. The WEB server runs
in this task. */
LCDdriver_initialisation();
@ -246,48 +259,83 @@ void prvSetupHardware( void )
/* Disable TPIU. */
PINCON->PINSEL10 = 0;
/* Disconnect the main PLL. */
SC->PLL0CON &= ~PLLCON_PLLC;
if ( SC->PLL0STAT & ( 1 << 25 ) )
{
/* Enable PLL, disconnected. */
SC->PLL0CON = 1;
SC->PLL0FEED = PLLFEED_FEED1;
SC->PLL0FEED = PLLFEED_FEED2;
}
/* Disable PLL, disconnected. */
SC->PLL0CON = 0;
SC->PLL0FEED = PLLFEED_FEED1;
SC->PLL0FEED = PLLFEED_FEED2;
while ((SC->PLL0STAT & PLLSTAT_PLLC) != 0);
/* Turn off the main PLL. */
SC->PLL0CON &= ~PLLCON_PLLE;
/* Enable main OSC. */
SC->SCS |= 0x20;
while( !( SC->SCS & 0x40 ) );
/* select main OSC, 12MHz, as the PLL clock source. */
SC->CLKSRCSEL = 0x1;
SC->PLL0CFG = 0x0b;
SC->PLL0FEED = PLLFEED_FEED1;
SC->PLL0FEED = PLLFEED_FEED2;
while ((SC->PLL0STAT & PLLSTAT_PLLE) != 0);
/* No CPU clock divider. */
SC->CCLKCFG = 0;
/* OSCEN. */
SC->SCS = 0x20;
while ((SC->SCS & 0x40) == 0);
/* Use main oscillator. */
SC->CLKSRCSEL = 1;
SC->PLL0CFG = (PLLCFG_MUL16 | PLLCFG_DIV1);
/* Enable PLL, disconnected. */
SC->PLL0CON = 1;
SC->PLL0FEED = PLLFEED_FEED1;
SC->PLL0FEED = PLLFEED_FEED2;
/* Activate the PLL by turning it on then feeding the correct
sequence of bytes. */
SC->PLL0CON = PLLCON_PLLE;
/* Set clock divider. */
SC->CCLKCFG = 0x03;
/* Configure flash accelerator. */
SC->FLASHCFG = 0x303a;
/* Check lock bit status. */
while( ( ( SC->PLL0STAT & ( 1 << 26 ) ) == 0 ) );
/* Enable and connect. */
SC->PLL0CON = 3;
SC->PLL0FEED = PLLFEED_FEED1;
SC->PLL0FEED = PLLFEED_FEED2;
while( ( ( SC->PLL0STAT & ( 1 << 25 ) ) == 0 ) );
/* 6x CPU clock divider (64 MHz) */
SC->CCLKCFG = 5;
/* Wait for the PLL to lock. */
while ((SC->PLL0STAT & PLLSTAT_PLOCK) == 0);
/* Connect the PLL. */
SC->PLL0CON = PLLCON_PLLC | PLLCON_PLLE;
SC->PLL0FEED = PLLFEED_FEED1;
SC->PLL0FEED = PLLFEED_FEED2;
/* Configure the clock for the USB. */
if( SC->PLL1STAT & ( 1 << 9 ) )
{
/* Enable PLL, disconnected. */
SC->PLL1CON = 1;
SC->PLL1FEED = PLLFEED_FEED1;
SC->PLL1FEED = PLLFEED_FEED2;
}
/* Disable PLL, disconnected. */
SC->PLL1CON = 0;
SC->PLL1FEED = PLLFEED_FEED1;
SC->PLL1FEED = PLLFEED_FEED2;
SC->PLL1CFG = 0x23;
SC->PLL1FEED = PLLFEED_FEED1;
SC->PLL1FEED = PLLFEED_FEED2;
/* Enable PLL, disconnected. */
SC->PLL1CON = 1;
SC->PLL1FEED = PLLFEED_FEED1;
SC->PLL1FEED = PLLFEED_FEED2;
while( ( ( SC->PLL1STAT & ( 1 << 10 ) ) == 0 ) );
/* Enable and connect. */
SC->PLL1CON = 3;
SC->PLL1FEED = PLLFEED_FEED1;
SC->PLL1FEED = PLLFEED_FEED2;
while( ( ( SC->PLL1STAT & ( 1 << 9 ) ) == 0 ) );
/* Setup the peripheral bus to be the same as the PLL output (64 MHz). */
SC->PCLKSEL0 = 0x05555555;