Defined clock Frequency and multiplication factor

2024-09-20 19:59:45 +05:30 · 2024-09-20 19:59:45 +05:30 · 0dc4b7361e
parent 322eb69756
commit 0dc4b7361e
1 changed files with 3 additions and 1 deletions
--- a/main.c
+++ b/main.c
@ -4,4 +4,6 @@
 // SysTick memory-mapped registers
 #define STCTRL *((volatile uint32_t *) 0xE000E010)          // CONTROL AND STATUS
 #define STRELOAD *((volatile uint32_t *) 0xE000E014)        // RELOAD VALUE
-#define STCURRENT *((volatile uint32_t *) 0xE000E018)       // CURRENT VALUE
+#define STCURRENT *((volatile uint32_t *) 0xE000E018)       // CURRENT VALUE
+#define CLOCK_HZ 16000000       // CLOCK FREQUENCY OF EK-TM4C123GXL
+#define SYSTICK_RELOAD_VALUE(us) ((CLOCK_HZ / 1000000) * (us) - 1)  // SYSTICK RELOAD VALUE