📄 bsp.c
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/*
*********************************************************************************************************
* OS_CPU_ExceptHndlr()
*
* Description : Handle any exceptions.
*
* Argument(s) : except_id ARM exception type:
*
* OS_CPU_ARM_EXCEPT_RESET 0x00
* OS_CPU_ARM_EXCEPT_UNDEF_INSTR 0x01
* OS_CPU_ARM_EXCEPT_SWI 0x02
* OS_CPU_ARM_EXCEPT_PREFETCH_ABORT 0x03
* OS_CPU_ARM_EXCEPT_DATA_ABORT 0x04
* OS_CPU_ARM_EXCEPT_ADDR_ABORT 0x05
* OS_CPU_ARM_EXCEPT_IRQ 0x06
* OS_CPU_ARM_EXCEPT_FIQ 0x07
*
* Return(s) : none.
*
* Caller(s) : OS_CPU_ARM_EXCEPT_HANDLER(), which is declared in os_cpu_a.s.
*********************************************************************************************************
*/
void OS_CPU_ExceptHndlr(CPU_DATA except_id)
{
CPU_FNCT_VOID pfnct;
CPU_INT32U *sp = 0;
/* If this exception is either an IRQ or FIQ */
if ((except_id == OS_CPU_ARM_EXCEPT_IRQ) || (except_id == OS_CPU_ARM_EXCEPT_FIQ))
{
pfnct = (CPU_FNCT_VOID) VICAddress; /* Read the interrupt vector from the VIC */
if (pfnct != (CPU_FNCT_VOID) 0)
{
/* Make sure we don't have a NULL pointer */
(*pfnct) (); /* Execute the ISR for the interrupting device */
VICAddress = 1; /* Acknowlege the VIC interrupt */
}
}
else
{
sp = (CPU_INT32U *) OSTCBCur->OSTCBStkPtr;
/*APP_TRACE_INFO(("\nCPU_ARM_EXCEPTION #%d trapped.\n", except_id));
APP_TRACE_INFO(("R0 : 0x%08x\n", *(sp + 0x01)));
APP_TRACE_INFO(("R1 : 0x%08x\n", *(sp + 0x02)));
APP_TRACE_INFO(("R2 : 0x%08x\n", *(sp + 0x03)));
APP_TRACE_INFO(("R3 : 0x%08x\n", *(sp + 0x04)));
APP_TRACE_INFO(("R4 : 0x%08x\n", *(sp + 0x05)));
APP_TRACE_INFO(("R5 : 0x%08x\n", *(sp + 0x06)));
APP_TRACE_INFO(("R6 : 0x%08x\n", *(sp + 0x07)));
APP_TRACE_INFO(("R7 : 0x%08x\n", *(sp + 0x08)));
APP_TRACE_INFO(("R8 : 0x%08x\n", *(sp + 0x09)));
APP_TRACE_INFO(("R9 : 0x%08x\n", *(sp + 0x0A)));
APP_TRACE_INFO(("R10 : 0x%08x\n", *(sp + 0x0B)));
APP_TRACE_INFO(("R11 : 0x%08x\n", *(sp + 0x0C)));
APP_TRACE_INFO(("R12 : 0x%08x\n", *(sp + 0x0D)));
APP_TRACE_INFO(("SP : 0x%08x\n", sp));
APP_TRACE_INFO(("LR : 0x%08x\n", *(sp + 0x0E)));
APP_TRACE_INFO(("PC : 0x%08x\n", *(sp + 0x0F)));
APP_TRACE_INFO(("CPSR: 0x%08x\n", *(sp + 0x00)));*/
/* Infinite loop on other exceptions. */
/* Should be replaced by other behavior (reboot, etc.) */
while (DEF_TRUE)
{
;}
}
}
/*
*********************************************************************************************************
* BSP_IntDisAll()
*
* Description : Disable ALL interrupts.
*
* Argument(s) : none.
*
* Return(s) : none.
*********************************************************************************************************
*/
void BSP_IntDisAll(void)
{
VICIntEnClear = 0xFFFFFFFFL; /* Disable ALL interrupts */
}
/*
******************************************************************************************************************************
******************************************************************************************************************************
** LED, PB AND ADC FUNCTIONS
******************************************************************************************************************************
******************************************************************************************************************************
*/
/*
*********************************************************************************************************
* LED_Init()
*
* Description : Initialize the I/O for the LEDs
*
* Argument(s) : none.
*
* Return(s) : none.
*********************************************************************************************************
*/
void LED_Init(void)
{
LED_Off(0); /* Turn OFF all the LEDs */
}
/*
*********************************************************************************************************
* LED_On()
*
* Description : Turn ON any or all the LEDs on the board.
*
* Argument(s) : led The ID of the LED to control:
*
* 0 turn ON all LEDs on the board
* 1 turn ON LED1
* .
* .
* .
* 8 turn ON LED8
*
* Return(s) : none.
*********************************************************************************************************
*/
void LED_On(CPU_INT08U led)
{
if (led == 0)
{
FIO2SET = 0xFF; /* Turn on ALL LEDs */
}
if ((led >= 1) && (led <= 8))
{
led--; /* Ex: If led is 1, then subtract 1 to indicate bit 0 */
FIO2SET = (1 << led); /* Turn on the selected LED */
}
}
/*
*********************************************************************************************************
* LED_Off()
*
* Description : Turn OFF any or all the LEDs on the board.
*
* Argument(s) : led The ID of the LED to control:
*
* 0 turn OFF all LEDs on the board
* 1 turn OFF LED1
* .
* .
* .
* 8 turn OFF LED8
*
* Return(s) : none.
*********************************************************************************************************
*/
void LED_Off(CPU_INT08U led)
{
if (led == 0)
{
FIO2CLR = 0xFF; /* Turn off ALL LEDs */
}
if ((led >= 1) && (led <= 8))
{
led--; /* Ex: If led is 1, then subtract 1 to indicate bit 0 */
FIO2CLR = (1 << led); /* Turn off the selected LED */
}
}
/*
*********************************************************************************************************
* LED_Toggle()
*
* Description : TOGGLE any or all the LEDs on the board.
*
* Argument(s) : led The ID of the LED to control:
*
* 0 TOGGLE all LEDs on the board
* 1 TOGGLE LED1
* .
* .
* .
* 8 TOGGLE LED8
*
* Return(s) : none.
*********************************************************************************************************
*/
void LED_Toggle(CPU_INT08U led)
{
CPU_INT08U status;
if (led == 0)
{
status = FIO2PIN;
FIO2SET = ~status;
FIO2CLR = status;
}
if ((led >= 1) && (led <= 8))
{
led--; /* Ex: If led is 1, then subtract 1 to indicate bit 0 */
if ((FIO2PIN & (1 << led)) == 0)
{
/* If the LED is currently off */
FIO2SET = (1 << 0); /* Turn on the selected LED */
}
else
{
FIO2CLR = (1 << led); /* Turn off the selected LED */
}
}
}
/*
*********************************************************************************************************
* PB_GetStatus()
*
* Description : Get the status of a push button on the board.
*
* Argument(s) : pb The ID of the push button to probe
*
* 1 probe the push button INT1
*
* Return(s) : DEF_FALSE if the push button is pressed
* DEF_TRUE if the push button is not pressed
*********************************************************************************************************
*/
CPU_BOOLEAN PB_GetStatus(CPU_INT08U pb)
{
CPU_BOOLEAN status;
status = DEF_FALSE;
switch (pb)
{
case 1:
if ((FIO2PIN & GPIO2_PB1) == 0)
{
status = (DEF_TRUE);
}
break;
default:
break;
}
return (status);
}
/*
*********************************************************************************************************
* ADC_Init()
*
* Description : Initialize the board's ADC.
*
* Argument(s) : none.
*
* Return(s) : none.
*********************************************************************************************************
*/
static void ADC_Init(void)
{
CPU_INT08U div;
CPU_INT32U pinsel;
PCONP |= DEF_BIT_12;
div = (BSP_CPU_PclkFreq(PCLK_ADC) / 4500000) + 1;
/* Configure ADC ... */
AD0CR = (0x01 << 0) /* ... Sample/convert pin AD0.0 ... */ | (div << 8) /* ... Set divider so sample freq. < 4.5 MHz ... */ | DEF_BIT_16 /* ... Use burst mode for continuous conversion ... */ | (0x00 << 17) /* ... Use 11 clocks per conversion for 10-bit accuracy ...*/ | DEF_BIT_21; /* ... Power up the ADC. */
/* Select AD0.0 function for P0.23 */
pinsel = PINSEL1;
pinsel &= 0xFFFF3FFF;
pinsel |= 0x00004000;
PINSEL1 = pinsel;
}
/*
*********************************************************************************************************
* ADC_GetStatus()
*
* Description : Get the status of an ADC input.
*
* Argument(s) : pb The ID of the push button to probe
*
* 0 probes AD0.0, the potentiometer
*
* Return(s) : The numerator of the binary fraction representing the result of the latest ADC conversion.
* This value will be a 10-bit value between 0x0000 and 0x03FF, inclusive.
*********************************************************************************************************
*/
CPU_INT16U ADC_GetStatus(CPU_INT08U adc)
{
if (adc == 0)
{
return ((ADDR0 >> 6) & 0x03FF);
}
else
{
return (0);
}
}
/*
*********************************************************************************************************
*********************************************************************************************************
** uC/LCD FUNCTIONS
*********************************************************************************************************
*********************************************************************************************************
*/
/*
*********************************************************************************************************
* DispInitPort()
*
* Description : Initializes the I/O ports used by the display driver.
*
* Argument(s) : none.
*
* Return(s) : none.
*
* Note(s) : (1) The I/Os for the LCD module are initialized in BSP_IO_Init().
*********************************************************************************************************
*/
#ifdef DISP_MODULE_PRESENT
void DispInitPort(void)
{
}
#endif
/*
*********************************************************************************************************
* DispDataWr()
*
* Description : Sends a single byte to the display device.
*
* Argument(s) : 'data' Data to send to the display device
*
* Return(s) : none.
*********************************************************************************************************
*/
#ifdef DISP_MODULE_PRESENT
void DispDataWr(CPU_INT08U data)
{
CPU_INT32U value;
DispRW_Low(); /* Set R/W write LOW to write to the LCD module */
DispE_High(); /* Write the UPPER nibble to the LCD module */
value = ((data >> 4) & 0x0F) << 24;
IO1SET = value;
value = (~(data >> 4) & 0x0F) << 24;
IO1CLR = value;
DispDly_uS(100);
DispE_Low();
DispDly_uS(100); /* Write the LOWER nibble to the LCD module */
DispE_High();
value = (data & 0x0F) << 24;
IO1SET = value;
value = (~data & 0x0F) << 24;
IO1CLR = value;
DispDly_uS(100);
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