stm-firmware/include/reflow-controller/main-cycle-counter.h

@@ -30,16 +30,10 @@
 #include <stdint.h>
 
 /**
- * @brief Initialize the main cycle counter and reset to 0. This also enables the core cycle counter
+ * @brief Initialize/Reset the main cycle counter to 0.
  * This function can be called multiple times.
  */
-void main_and_core_cycle_counter_init(void);
+void main_cycle_counter_init(void);
-
-/**
- * @brief Reset the main cycle counter.
- * @note This does not reset the core cycle counter
- */
-void main_cycle_counter_reset(void);
 
 /**
  * @brief Increment the main cycle counter by 1
@@ -52,18 +46,6 @@ void main_cycle_counter_inc(void);
  */
 uint64_t main_cycle_counter_get(void);
 
-/**
- * @brief Reset the core cycle counter to 0
- */
-void core_cycle_counter_reset(void);
-
-/**
- * @brief Get the current value of the core cycle counter
- * 
- * @return uint32_t Counter value
- */
-uint32_t core_cycle_counter_get(void);
-
 #endif /* __MAIN_CYCLE_COUNTER_H__ */
 
 /** @} */

stm-firmware/main-cycle-counter.c

@@ -25,7 +25,6 @@
 
 #include <reflow-controller/main-cycle-counter.h>
 #include <helper-macros/helper-macros.h>
-#include <stm32/stm32f4xx.h>
 
 /**
  * @brief Variable storing the main cycle counter.
@@ -34,22 +33,7 @@
  */
 static uint64_t IN_SECTION(.ccm.bss) main_cycle_counter;
 
-void main_and_core_cycle_counter_init(void)
+void main_cycle_counter_init(void)
-{
-	CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;	
-
-	/* Enable the core cycle counter if available on current processor */
-	if (!(DWT->CTRL & DWT_CTRL_NOCYCCNT_Msk)) {
-		/* Cycle counter is available. Enable */
-		DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
-	}
-
-	/* Reset the counters to 0 */
-	main_cycle_counter_reset();
-	core_cycle_counter_reset();
-}	
-
-void main_cycle_counter_reset(void)
 {
 	main_cycle_counter = 0ULL;
 }
@@ -64,14 +48,4 @@ uint64_t main_cycle_counter_get(void)
 	return main_cycle_counter;
 }
 
-void core_cycle_counter_reset(void)
-{
-	DWT->CYCCNT = 0UL;
-}
-
-uint32_t core_cycle_counter_get(void)
-{
-	return DWT->CYCCNT;
-}
-
 /** @} */

stm-firmware/main.c

@@ -268,8 +268,8 @@ int main(void)
 	/** - Print motd to shell */
 	shell_print_motd(shell_handle);
 
-	/** - Set the main cycle counter to 0 and activate the core cycle counter if available */
+	/** - Set the main cycle counter to 0 */
-	main_and_core_cycle_counter_init();
+	main_cycle_counter_init();
 
 	/** - Do a loop over the following */
 	while (1) {

stm-firmware/ui/shell.c

@@ -892,7 +892,7 @@ shellmatta_retCode_t shell_cmd_cycle_count(const shellmatta_handle_t handle, con
 
 
 	counter = main_cycle_counter_get();
-	core_cycle_count = core_cycle_counter_get();
+	core_cycle_count = DWT->CYCCNT;
 	if (hex) {
 		shellmatta_printf(handle, "Main loop: 0x%016"PRIX64"\r\n", counter);
 		shellmatta_printf(handle, "CPU cycles: 0x%08"PRIX32"\r\n", core_cycle_count);
@@ -901,8 +901,8 @@ shellmatta_retCode_t shell_cmd_cycle_count(const shellmatta_handle_t handle, con
 		shellmatta_printf(handle, "CPU cycles: %"PRIu32"\r\n", core_cycle_count);
 	}
 	if (clear) {
-		main_cycle_counter_reset();
+		main_cycle_counter_init();
-		core_cycle_counter_reset();
+		DWT->CYCCNT = 0UL;
 	}
 	return SHELLMATTA_OK;
 }