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89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
/* Board Support Package (BSP) for the EK-TM4C123GXL board */
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#include <stdint.h> /* Standard integers. WG14/N843 C99 Standard */
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#include "bsp.h"
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#include "miros.h"
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#include "TM4C123GH6PM.h" /* the TM4C MCU Peripheral Access Layer (TI) */
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/* on-board LEDs */
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#define LED_RED (1U << 1)
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#define LED_BLUE (1U << 2)
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#define LED_GREEN (1U << 3)
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#define TEST_PIN (1U << 4)
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static uint32_t volatile l_tickCtr;
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void SysTick_Handler(void) {
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GPIOF_AHB->DATA_Bits[TEST_PIN] = TEST_PIN;
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++l_tickCtr;
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__disable_irq();
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OS_sched();
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__enable_irq();
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GPIOF_AHB->DATA_Bits[TEST_PIN] = 0U;
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}
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void BSP_init(void) {
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SYSCTL->RCGCGPIO |= (1U << 5); /* enable Run mode for GPIOF */
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SYSCTL->GPIOHBCTL |= (1U << 5); /* enable AHB for GPIOF */
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GPIOF_AHB->DIR |= (LED_RED | LED_BLUE | LED_GREEN | TEST_PIN);
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GPIOF_AHB->DEN |= (LED_RED | LED_BLUE | LED_GREEN | TEST_PIN);
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}
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uint32_t BSP_tickCtr(void) {
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uint32_t tickCtr;
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__disable_irq();
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tickCtr = l_tickCtr;
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__enable_irq();
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return tickCtr;
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}
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void BSP_delay(uint32_t ticks) {
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uint32_t start = BSP_tickCtr();
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while ((BSP_tickCtr() - start) < ticks) {
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}
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}
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void BSP_ledRedOn(void) {
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GPIOF_AHB->DATA_Bits[LED_RED] = LED_RED;
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}
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void BSP_ledRedOff(void) {
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GPIOF_AHB->DATA_Bits[LED_RED] = 0U;
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}
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void BSP_ledBlueOn(void) {
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GPIOF_AHB->DATA_Bits[LED_BLUE] = LED_BLUE;
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}
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void BSP_ledBlueOff(void) {
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GPIOF_AHB->DATA_Bits[LED_BLUE] = 0U;
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}
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void BSP_ledGreenOn(void) {
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GPIOF_AHB->DATA_Bits[LED_GREEN] = LED_GREEN;
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}
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void BSP_ledGreenOff(void) {
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GPIOF_AHB->DATA_Bits[LED_GREEN] = 0U;
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}
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void OS_onStartup(void) {
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SystemCoreClockUpdate();
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SysTick_Config(SystemCoreClock / BSP_TICKS_PER_SEC);
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/* set the SysTick interrupt priority (highest) */
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NVIC_SetPriority(SysTick_IRQn, 0U);
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}
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void Q_onAssert(char const *module, int loc) {
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/* TBD: damage control */
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(void)module; /* avoid the "unused parameter" compiler warning */
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(void)loc; /* avoid the "unused parameter" compiler warning */
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NVIC_SystemReset();
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}
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