📄 bsp.c
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/*
*********************************************************************************************************
* Philips LPC210x
* Keil's MCB2100 Board Support Package
*
* (c) Copyright 2005, Micrium, Weston, FL
* All Rights Reserved
*
*
* File : BSP.C
* By : Jean J. Labrosse
*********************************************************************************************************
*/
#include <includes.h>
/*
*********************************************************************************************************
* CONSTANTS
*********************************************************************************************************
*/
#define BSP_UNDEF_INSTRUCTION_VECTOR_ADDR (*(INT32U *)0x00000004L)
#define BSP_SWI_VECTOR_ADDR (*(INT32U *)0x00000008L)
#define BSP_PREFETCH_ABORT_VECTOR_ADDR (*(INT32U *)0x0000000CL)
#define BSP_DATA_ABORT_VECTOR_ADDR (*(INT32U *)0x00000010L)
#define BSP_IRQ_VECTOR_ADDR (*(INT32U *)0x00000018L)
#define BSP_FIQ_VECTOR_ADDR (*(INT32U *)0x0000001CL)
#define BSP_IRQ_ISR_ADDR (*(INT32U *)0x00000038L)
#define BSP_FIQ_ISR_ADDR (*(INT32U *)0x0000003CL)
/*
*********************************************************************************************************
* DATA TYPES
*********************************************************************************************************
*/
typedef void (*BSP_PFNCT)(void);
/*
*********************************************************************************************************
* VARIABLES
*********************************************************************************************************
*/
INT32U VIC_SpuriousInt;
/*
*********************************************************************************************************
* PROTOTYPES
*********************************************************************************************************
*/
void VIC_Init(void);
void VIC_Dummy(void);
void VIC_DummyWDT(void);
void VIC_DummyTIMER0(void);
void VIC_DummyTIMER1(void);
void VIC_DummyUART0(void);
void VIC_DummyUART1(void);
void VIC_DummyPWM0(void);
void VIC_DummyI2C(void);
void VIC_DummySPI(void);
void VIC_DummyRTC(void);
void VIC_DummyEINT0(void);
void VIC_DummyEINT1(void);
void VIC_DummyEINT2(void);
/*
*********************************************************************************************************
* BSP INITIALIZATION
*
* Description : This function should be called by your application code before you make use of any of the
* functions found in this module.
*
* Arguments : none
*********************************************************************************************************
*/
void BSP_Init (void)
{
MEMMAP = 2; /* Remap 64 bytes of int. RAM to 0x00 */
BSP_IRQ_VECTOR_ADDR = 0xE59FF018; /* LDR PC,[PC,#0x18] instruction */
BSP_IRQ_ISR_ADDR = (INT32U)OS_CPU_IRQ_ISR; /* IRQ exception vector address */
BSP_FIQ_VECTOR_ADDR = 0xE59FF018; /* LDR PC,[PC,#0x18] instruction */
BSP_FIQ_ISR_ADDR = (INT32U)OS_CPU_FIQ_ISR; /* FIQ exception vector address */
BSP_UNDEF_INSTRUCTION_VECTOR_ADDR = 0xEAFFFFFE; /* Jump to itself */
BSP_SWI_VECTOR_ADDR = 0xEAFFFFFE;
BSP_PREFETCH_ABORT_VECTOR_ADDR = 0xEAFFFFFE;
BSP_DATA_ABORT_VECTOR_ADDR = 0xEAFFFFFE;
BSP_FIQ_VECTOR_ADDR = 0xEAFFFFFE;
VIC_Init(); /* Initialize the Vectored Interrupt Controller */
LED_Init();
Tmr_TickInit();
}
/*
*********************************************************************************************************
* BSP INITIALIZATION
*
* Description : This function should be called by your application code before you make use of any of the
* functions found in this module.
*
* Arguments : none
*********************************************************************************************************
*/
void LED_Init (void)
{
PINSEL0 = 0;
PINSEL1 = 0; /* Use GPIO pins P1.16 to P1.23 for LEDs */
IO0DIR |= 0x0f000000; /* Set GPIO pins as outputs */
// LED_On(0); /* Turn OFF all the LEDs */
}
/*
*********************************************************************************************************
* LED ON
*
* Description : This function is used to control any or all the LEDs on the board.
*
* Arguments : led is the number of the LED to control
* 0 indicates that you want ALL the LEDs to be ON
* 1 turns ON LED1 on the board
* .
* .
* 8 turns ON LED8 on the board
*********************************************************************************************************
*/
void LED_On0 (INT8U led)
{
IO0SET |= 0x02000000;
}
void LED_On1 (INT8U led)
{
IO0SET |= 0x01000000;
}
/*
*********************************************************************************************************
* LED OFF
*
* Description : This function is used to control any or all the LEDs on the board.
*
* Arguments : led is the number of the LED to turn OFF
* 0 indicates that you want ALL the LEDs to be OFF
* 1 turns OFF LED1 on the board
* .
* .
* 8 turns OFF LED8 on the board
*********************************************************************************************************
*/
void LED_Off0 (INT8U led)
{
IO0CLR = 0x02000000;
}
void LED_Off1 (INT8U led)
{
IO0CLR = 0x01000000;
}
/*
*********************************************************************************************************
* IRQ ISR HANDLER
*
* Description : This function is called by OS_CPU_IRQ_ISR() to determine the source of the interrupt
* and process it accordingly.
*
* Arguments : none
*********************************************************************************************************
*/
void OS_CPU_IRQ_ISR_Handler (void)
{
BSP_PFNCT pfnct;
pfnct = (BSP_PFNCT)VICVectAddr; /* Read the interrupt vector from the VIC */
while (pfnct != (BSP_PFNCT)0) { /* Make sure we don't have a NULL pointer */
(*pfnct)(); /* Execute the ISR for the interrupting device */
pfnct = (BSP_PFNCT)VICVectAddr; /* Read the interrupt vector from the VIC */
}
}
/*
*********************************************************************************************************
* FIQ ISR HANDLER
*
* Description : This function is called by OS_CPU_FIQ_ISR() to determine the source of the interrupt
* and process it accordingly.
*
* Arguments : none
*********************************************************************************************************
*/
void OS_CPU_FIQ_ISR_Handler (void)
{
BSP_PFNCT pfnct;
pfnct = (BSP_PFNCT)VICVectAddr; /* Read the interrupt vector from the VIC */
while (pfnct != (BSP_PFNCT)0) { /* Make sure we don't have a NULL pointer */
(*pfnct)(); /* Execute the ISR for the interrupting device */
pfnct = (BSP_PFNCT)VICVectAddr; /* Read the interrupt vector from the VIC */
}
}
/*
*********************************************************************************************************
* TICKER INITIALIZATION
*
* Description : This function is called to initialize uC/OS-II's tick source (typically a timer generating
* interrupts every 1 to 100 mS).
*
* Arguments : none
*********************************************************************************************************
*/
void Tmr_TickInit (void)
{
/* VIC TIMER #0 Initialization */
VICIntSelect &= ~(1 << VIC_TIMER0); /* Enable interrupts */
VICVectAddr2 = (INT32U)Tmr_TickISR_Handler; /* Set the vector address */
VICVectCntl2 = 0x20 | VIC_TIMER0; /* Enable vectored interrupts */
VICIntEnable = (1 << VIC_TIMER0); /* Enable Interrupts */
T0TCR = 0; /* Disable timer 0. */
T0PC = 0; /* Prescaler is set to no division. */
T0MR0 = CPU_PERIPHERAL_CLK_FREQ / OS_TICKS_PER_SEC; /* Count up to this value. */
T0MCR = 3; /* Reset and interrupt on MR0 (match register 0). */
T0CCR = 0; /* Capture is disabled. */
T0EMR = 0; /* No external match output. */
T0TCR = 1; /* Enable timer 0 */
}
/*
*********************************************************************************************************
* TIMER #0 IRQ HANDLER
*
* Description : This function handles the timer interrupt that is used to generate TICKs for uC/OS-II.
*
* Arguments : none
*********************************************************************************************************
*/
void Tmr_TickISR_Handler (void)
{
T0IR = 0xFF; /* Clear timer #0 interrupt */
OSTimeTick(); /* If the interrupt is from the tick source, call OSTimeTick() */
VICVectAddr = 0;
}
/*
*********************************************************************************************************
* Vectored Interrupt Controller
*********************************************************************************************************
*/
void VIC_Init (void)
{
VICIntEnClear = 0xFFFFFFFF; /* Disable ALL interrupts */
VICProtection = 0; /* Setup interrupt controller */
VICVectAddr1 = (INT32U)VIC_DummyWDT; /* Set the vector address */
VICVectAddr2 = (INT32U)VIC_DummyTIMER0;
VICVectAddr3 = (INT32U)VIC_DummyTIMER1;
VICVectAddr4 = (INT32U)VIC_DummyUART0;
VICVectAddr5 = (INT32U)VIC_DummyUART1;
VICVectAddr6 = (INT32U)VIC_DummyPWM0;
VICVectAddr7 = (INT32U)VIC_DummyI2C;
VICVectAddr8 = (INT32U)VIC_DummySPI;
VICVectAddr9 = (INT32U)VIC_DummyRTC;
VICVectAddr10 = (INT32U)VIC_DummyEINT0;
VICVectAddr11 = (INT32U)VIC_DummyEINT1;
VICVectAddr12 = (INT32U)VIC_DummyEINT2;
}
void VIC_Dummy (void)
{
while (1) {
(void)VIC_SpuriousInt;
}
}
void VIC_DummyWDT (void)
{
VIC_SpuriousInt = VIC_WDT;
VIC_Dummy();
}
void VIC_DummyTIMER0 (void)
{
VIC_SpuriousInt = VIC_TIMER0;
VIC_Dummy();
}
void VIC_DummyTIMER1 (void)
{
VIC_SpuriousInt = VIC_TIMER1;
VIC_Dummy();
}
void VIC_DummyUART0 (void)
{
VIC_SpuriousInt = VIC_UART0;
VIC_Dummy();
}
void VIC_DummyUART1 (void)
{
VIC_SpuriousInt = VIC_UART1;
VIC_Dummy();
}
void VIC_DummyPWM0 (void)
{
VIC_SpuriousInt = VIC_UART1;
VIC_Dummy();
}
void VIC_DummyI2C (void)
{
VIC_SpuriousInt = VIC_I2C;
VIC_Dummy();
}
void VIC_DummySPI (void)
{
VIC_SpuriousInt = VIC_I2C;
VIC_Dummy();
}
void VIC_DummyRTC (void)
{
VIC_SpuriousInt = VIC_RTC;
VIC_Dummy();
}
void VIC_DummyEINT0 (void)
{
VIC_SpuriousInt = VIC_EINT0;
VIC_Dummy();
}
void VIC_DummyEINT1 (void)
{
VIC_SpuriousInt = VIC_EINT1;
VIC_Dummy();
}
void VIC_DummyEINT2 (void)
{
VIC_SpuriousInt = VIC_EINT2;
VIC_Dummy();
}
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