From 2c2d3182172720af00657bf92f4628698f45b7fa Mon Sep 17 00:00:00 2001
From: key <key@devbian.home>
Date: Wed, 22 Dec 2021 17:08:59 +0100
Subject: [PATCH] Making timers great again pahse 1 / to be tested and finished
 so that the timerInit() function works properly

---
 bsl/csl/interfaces/timer.h    |  7 ++++--
 bsl/csl/stm32f042/Src/timer.c | 40 ++++++++++++++++++++++++-----------
 main.cpp                      |  7 +++---
 3 files changed, 37 insertions(+), 17 deletions(-)

diff --git a/bsl/csl/interfaces/timer.h b/bsl/csl/interfaces/timer.h
index 8fe1733..94db6c4 100644
--- a/bsl/csl/interfaces/timer.h
+++ b/bsl/csl/interfaces/timer.h
@@ -35,6 +35,7 @@ typedef enum {
 } timerCountDirection_t;
 
 typedef enum {
+	counter,
 	inputCapture,
 	outputCompare,
 	pwm,
@@ -43,8 +44,8 @@ typedef enum {
 
 void timerReset(timerNo_t timer);
 void timerActivateBus(timerNo_t timer); 
-void timerEnableTimer(timerNo_t timer); 
-void timerDisableTimer(timerNo_t timer);
+void timerEnable(timerNo_t timer); 
+void timerDisable(timerNo_t timer);
 void timerSetMode(timerNo_t timer, timerMode_t mode); 
 void timerSetCountDirection(timerNo_t timer, timerCountDirection_t direction); 
 void timerSetPrescaler(timerNo_t timer, uint32_t prescaler); 
@@ -56,12 +57,14 @@ void timerClearCounter(timerNo_t timer);
 
 
 /* Second stage configuration */
+void timerInit(timerNo_t timer, uint32_t prescaler, uint32_t period, timerCountDirection_t direction, timerMode_t mode);
 void timerSetHz(timerNo_t timer, uint16_t hz); 
 void timerSetMs(timerNo_t timer, uint16_t ms); 
 void timerSetNs(timerNo_t timer, uint16_t ns); 
 void timerSetPs(timerNo_t timer, uint16_t ps); 
 
 void timerSart(timerNo_t timer);
+void timerHalt(timerNo_t timer);
 void timerStop(timerNo_t timer);
 uint32_t timerGetCount(timerNo_t timer);
 
diff --git a/bsl/csl/stm32f042/Src/timer.c b/bsl/csl/stm32f042/Src/timer.c
index 832bba7..904f97e 100644
--- a/bsl/csl/stm32f042/Src/timer.c
+++ b/bsl/csl/stm32f042/Src/timer.c
@@ -5,8 +5,7 @@
 
 void timerReset(timerNo_t timer)
 {
-	// reset via RCC_APBxRSTR Register
-	 
+	// To implement RM page 116 
 }
 
 void timerActivateBus(timerNo_t timer)
@@ -16,23 +15,22 @@ void timerActivateBus(timerNo_t timer)
 		RCC->APB1ENR |= (1<<timerBus_En_bitPos[timer]); 	
 		return; 
 	}
-	
 	RCC->APB2ENR |= (1<<timerBus_En_bitPos[timer]); 	
 }
  
-void timerEnableTimer(timerNo_t timer)
+void timerEnable(timerNo_t timer)
 {
-	BASE->CR1 |= 0x01; //all the timers have the same CEN bit in CR1 register pos 0	
+	BASE->CR1 |= TIM_CR1_CEN; //all the timers have the same CEN bit in CR1 register pos 0	
 }
 
-void timerDisableTimer(timerNo_t timer)
+void timerDisable(timerNo_t timer)
 {
-	BASE->CR1 &=~ 0x01; //all the timers have the same CEN bit in CR1 register pos 0	
+	BASE->CR1 &=~ TIM_CR1_CEN; //all the timers have the same CEN bit in CR1 register pos 0	
 }
  
- 
 void timerSetMode(timerNo_t timer, timerMode_t mode)
 {
+	//Implement
 }
  
 void timerSetCountDirection(timerNo_t timer, timerCountDirection_t direction)
@@ -77,8 +75,21 @@ void timerClearUpdateInterrupt(timerNo_t timer)
 	BASE->SR &= ~1;
 }	
 
-/* Second stage configuration */
 
+/* Second stage configuration */
+void timerInit(	timerNo_t timer, 
+				uint32_t prescaler,
+				uint32_t period, 
+				timerCountDirection_t direction,
+				timerMode_t mode)
+{
+	timerActivateBus(timer);
+	timerReset(timer); 
+	timerSetMode(mode);
+	timerSetCountDirection(timer,direction);
+	timerSetPrescaler(timer, prescaler);
+	timerSetAutoReload(timer, period);
+}
 
 /*			Bus Clock
  * ------------------------------ = Duty (Hz)
@@ -100,7 +111,6 @@ void timerSetHz(timerNo_t timer, uint16_t hz)
 		temp = 8000000/(prescaler*(period)); 
 	}while(temp >= hz);
 
-	timerActivateBus(timer);
 	timerSetPrescaler(timer, prescaler-1);
 	timerSetAutoReload(timer, period-1);
 	timerClearCounter(timer);
@@ -124,12 +134,18 @@ void timerSetPs(timerNo_t timer, uint16_t ps)
 
 void timerSart(timerNo_t timer)
 {
-	
+	timerEnable(timer);
+}
+
+void timerHalt(timerNo_t timer)
+{
+	timerDisable(timer);
 }
 
 void timerStop(timerNo_t timer)
 {
-	
+	timerDisable(timer);
+	timerClearCounter(timer);
 }
 
 uint32_t timerGetCount(timerNo_t timer)
diff --git a/main.cpp b/main.cpp
index 6d3e3f8..566b616 100644
--- a/main.cpp
+++ b/main.cpp
@@ -14,10 +14,11 @@ int main(int argc, char *argv[])
 	uint8_t a = '0';
 
 	delayInitMs(8000000, 1000); 
-	
 
-	timerSetHz(timer_2,10);
-	timerEnableTimer(timer_2);
+	//timerSetHz(timer_2,3);
+
+	timerInit(timer_2, 7999, 999, counter, downCounting); 
+	timerSart(timer_2);
 	
 	pinConfig(pinB3, output, pushPull, def_res, def_speed);
 	pinConfig(pinA0, input, def_stage, pullDown, def_speed);