You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/* Board Support Package (BSP) for the EK-TM4C123GXL board */
|
|
#include "ucos_ii.h" /* uC-OS2 API */
|
|
#include <stdint.h> /* C99 standard integers */
|
|
#include "bsp.h" /* Board Support Package */
|
|
|
|
#include "TM4C123GH6PM.h" /* the TM4C MCU Peripheral Access Layer (TI) */
|
|
|
|
/* on-board LEDs */
|
|
#define LED_RED (1U << 1)
|
|
#define LED_BLUE (1U << 2)
|
|
#define LED_GREEN (1U << 3)
|
|
|
|
/* on-board switch */
|
|
#define BTN_SW1 (1U << 4)
|
|
|
|
OS_EVENT *SW1_sema;
|
|
|
|
/* ISRs =================================================================*/
|
|
void GPIOPortF_IRQHandler(void) {
|
|
#if OS_CRITICAL_METHOD == 3u /* Allocate storage for CPU status register */
|
|
OS_CPU_SR cpu_sr;
|
|
#endif
|
|
|
|
OS_ENTER_CRITICAL();
|
|
OSIntEnter(); /* Tell uC/OS-II that we are starting an ISR */
|
|
OS_EXIT_CRITICAL();
|
|
|
|
if ((GPIOF_AHB->RIS & BTN_SW1) != 0U) { /* interrupt caused by SW1? */
|
|
OSSemPost(SW1_sema);
|
|
}
|
|
GPIOF_AHB->ICR = 0xFFU; /* clear interrupt sources */
|
|
|
|
OSIntExit(); /* Tell uC/OS-II that we are leaving the ISR */
|
|
}
|
|
|
|
void BSP_init(void) {
|
|
SYSCTL->RCGCGPIO |= (1U << 5); /* enable Run Mode for GPIOF */
|
|
SYSCTL->GPIOHBCTL |= (1U << 5); /* enable AHB for GPIOF */
|
|
|
|
/* make sure the Run Mode and AHB-enable take effects
|
|
* before accessing the peripherals
|
|
*/
|
|
__ISB(); /* Instruction Synchronization Barrier */
|
|
__DSB(); /* Data Memory Barrier */
|
|
|
|
GPIOF_AHB->DIR |= (LED_RED | LED_BLUE | LED_GREEN);
|
|
GPIOF_AHB->DEN |= (LED_RED | LED_BLUE | LED_GREEN);
|
|
|
|
/* configure switch SW1 */
|
|
GPIOF_AHB->DIR &= ~BTN_SW1; /* input */
|
|
GPIOF_AHB->DEN |= BTN_SW1; /* digital enable */
|
|
GPIOF_AHB->PUR |= BTN_SW1; /* pull-up resistor enable */
|
|
|
|
/* GPIO interrupt setup for SW1 */
|
|
GPIOF_AHB->IS &= ~BTN_SW1; /* edge detect for SW1 */
|
|
GPIOF_AHB->IBE &= ~BTN_SW1; /* only one edge generate the interrupt */
|
|
GPIOF_AHB->IEV &= ~BTN_SW1; /* a falling edge triggers the interrupt */
|
|
GPIOF_AHB->IM |= BTN_SW1; /* enable GPIOF interrupt for SW1 */
|
|
}
|
|
|
|
void BSP_ledRedOn(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_RED] = LED_RED;
|
|
}
|
|
|
|
void BSP_ledRedOff(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_RED] = 0U;
|
|
}
|
|
|
|
void BSP_ledBlueOn(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_BLUE] = LED_BLUE;
|
|
}
|
|
|
|
void BSP_ledBlueOff(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_BLUE] = 0U;
|
|
}
|
|
|
|
void BSP_ledGreenOn(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_GREEN] = LED_GREEN;
|
|
}
|
|
|
|
void BSP_ledGreenOff(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_GREEN] = 0U;
|
|
}
|
|
|
|
/* callbacks ---------------------------------------------------------------*/
|
|
void BSP_onStartup(void) {
|
|
SystemCoreClockUpdate();
|
|
SysTick_Config(SystemCoreClock / BSP_TICKS_PER_SEC);
|
|
|
|
/* set the interrupt priorities of "kernel aware" interrupts */
|
|
NVIC_SetPriority(SysTick_IRQn, CPU_CFG_KA_IPL_BOUNDARY + 1U);
|
|
NVIC_SetPriority(GPIOF_IRQn, CPU_CFG_KA_IPL_BOUNDARY);
|
|
|
|
/* enable IRQs in NVIC... */
|
|
NVIC_EnableIRQ(GPIOF_IRQn);
|
|
}
|
|
|
|
/* Hooks ===================================================================*/
|
|
void App_TaskCreateHook (OS_TCB *ptcb) { (void)ptcb; }
|
|
void App_TaskDelHook (OS_TCB *ptcb) { (void)ptcb; }
|
|
void App_TaskReturnHook (OS_TCB *ptcb) { (void)ptcb; }
|
|
void App_TaskStatHook (void) {}
|
|
void App_TaskSwHook (void) {}
|
|
void App_TCBInitHook (OS_TCB *ptcb) { (void)ptcb; }
|
|
void App_TimeTickHook (void) {}
|
|
|
|
/*..........................................................................*/
|
|
void App_TaskIdleHook(void) {
|
|
GPIOF_AHB->DATA_Bits[LED_RED] = LED_RED;
|
|
#ifdef NDEBUG
|
|
/* Put the CPU and peripherals to the low-power mode.
|
|
* you might need to customize the clock management for your application,
|
|
* see the datasheet for your particular Cortex-M3 MCU.
|
|
*/
|
|
GPIOF_AHB->DATA_Bits[LED_RED] = 0U;
|
|
__WFI(); /* Wait-For-Interrupt */
|
|
GPIOF_AHB->DATA_Bits[LED_RED] = LED_RED;
|
|
#endif
|
|
GPIOF_AHB->DATA_Bits[LED_RED] = 0U;
|
|
}
|
|
//............................................................................
|
|
_Noreturn void assert_failed(char const * const module, int const id);
|
|
_Noreturn void assert_failed(char const * const module, int const id) {
|
|
(void)module; // unused parameter
|
|
(void)id; // unused parameter
|
|
#ifndef NDEBUG
|
|
// light up all LEDs
|
|
GPIOF_AHB->DATA_Bits[LED_GREEN | LED_RED | LED_BLUE] = 0xFFU;
|
|
// for debugging, hang on in an endless loop...
|
|
for (;;) {
|
|
}
|
|
#endif
|
|
NVIC_SystemReset();
|
|
}
|