Calculate spent CPU cycles and derive LFCLK

pipe01 · Oct 24, 2024 · 7f98d89 · 7f98d89
1 parent 04ebbdf
commit 7f98d89
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Showing 9 changed files with 275 additions and 33 deletions.
diff --git a/include/cpu.h b/include/cpu.h
@@ -16,7 +16,8 @@ typedef void (*mem_watchpoint_cb_t)(cpu_t *, bool isWrite, uint32_t addr, size_t
 cpu_t *cpu_new(const uint8_t *program, size_t program_size, memory_map_t *mem, size_t max_external_interrupts, size_t priority_bits);
 void cpu_free(cpu_t *);
 void cpu_reset(cpu_t *);
-void cpu_step(cpu_t *);
+// Returns the number of cycles that the CPU ran for
+int cpu_step(cpu_t *);
 
 void cpu_clear_instruction_cache(cpu_t *);
 

diff --git a/include/nrf52832.h b/include/nrf52832.h
@@ -13,6 +13,9 @@
 
 #define NRF52832_MAX_EXTERNAL_INTERRUPTS 496
 
+#define NRF52832_HFCLK_FREQUENCY (64 * 1000 * 1000)
+#define NRF52832_LFCLK_FREQUENCY 32768
+
 enum
 {
     INSTANCE_CLOCK = 0x00,
@@ -93,5 +96,6 @@ void *nrf52832_get_peripheral(NRF52832_t *, uint8_t instance_id);
 
 size_t nrf52832_get_used_sram(NRF52832_t *);
 size_t nrf52832_get_sram_size(NRF52832_t *);
+uint64_t nrf52832_get_cycle_counter(NRF52832_t *);
 
 bool nrf52832_flash_write(NRF52832_t *, uint32_t addr, uint8_t value);
diff --git a/include/peripherals/dwt.h b/include/peripherals/dwt.h
@@ -6,4 +6,4 @@
 
 PERIPHERAL(DWT, dwt)
 
-void dwt_increment_cycle(DWT_t *dwt);
+void dwt_increment_cycle(DWT_t *dwt, unsigned int count);
diff --git a/include/ticker.h b/include/ticker.h
@@ -7,9 +7,12 @@ typedef struct ticker_t ticker_t;
 
 typedef void (*ticker_cb_t)(void *);
 
-ticker_t *ticker_new(void);
+ticker_t *ticker_new(int32_t lfclk_cycles);
 void ticker_free(ticker_t *);
 void ticker_reset(ticker_t *);
-void ticker_tick(ticker_t *);
+
+void ticker_hftick(ticker_t *, unsigned int count);
+void ticker_lftick(ticker_t *);
+
 void ticker_add(ticker_t *, ticker_cb_t cb, void *userdata, uint32_t interval, bool auto_reload);
 void ticker_remove(ticker_t *, ticker_cb_t cb);
Original file line number	Diff line number	Diff line change
Expand Up		@@ -6,4 +6,4 @@

		PERIPHERAL(DWT, dwt)

		void dwt_increment_cycle(DWT_t *dwt);
		void dwt_increment_cycle(DWT_t *dwt, unsigned int count);