Add timer.[ch]

right/src/init_peripherals.c

@@ -13,6 +13,7 @@
 #include "init_peripherals.h"
 #include "eeprom.h"
 #include "microseconds/microseconds_pit.c"
+#include "timer.h"
 
 void InitInterruptPriorities(void)
 {
@@ -109,6 +110,7 @@ void InitI2c(void)
 void InitPeripherals(void)
 {
     InitInterruptPriorities();
+    Timer_Init();
     InitLedDriver();
     InitResetButton();
     InitMergeSensor();

right/src/key_scanner.h

@@ -1,5 +1,5 @@
 #ifndef __KEY_SCANNER_H__
-#define __KEY_SCANNER_H__
+#define __TIMER_H__
 
 // Includes:
 

right/src/peripherals/pit.h

@@ -9,8 +9,12 @@
     #define PIT_I2C_WATCHDOG_IRQ_ID  PIT0_IRQn
     #define PIT_I2C_WATCHDOG_CHANNEL kPIT_Chnl_0
 
-    #define PIT_KEY_SCANNER_HANDLER  PIT1_IRQHandler
-    #define PIT_KEY_SCANNER_IRQ_ID   PIT1_IRQn
-    #define PIT_KEY_SCANNER_CHANNEL  kPIT_Chnl_1
+    #define PIT_TIMER_HANDLER        PIT1_IRQHandler
+    #define PIT_TIMER_IRQ_ID         PIT1_IRQn
+    #define PIT_TIMER_CHANNEL        kPIT_Chnl_1
+
+    #define PIT_KEY_SCANNER_HANDLER  PIT2_IRQHandler
+    #define PIT_KEY_SCANNER_IRQ_ID   PIT2_IRQn
+    #define PIT_KEY_SCANNER_CHANNEL  kPIT_Chnl_2
 
 #endif

right/src/timer.c

@@ -0,0 +1,18 @@
+#include "fsl_pit.h"
+#include "timer.h"
+
+void Timer_Init(void)
+{
+    pit_config_t pitConfig;
+    PIT_GetDefaultConfig(&pitConfig);
+    PIT_Init(PIT, &pitConfig);
+    PIT_SetTimerPeriod(PIT, PIT_TIMER_CHANNEL, USEC_TO_COUNT(TIMER_INTERVAL_USEC, PIT_SOURCE_CLOCK));
+    PIT_EnableInterrupts(PIT, PIT_TIMER_CHANNEL, kPIT_TimerInterruptEnable);
+//    EnableIRQ(PIT_TIMER_IRQ_ID);
+    PIT_StartTimer(PIT, PIT_TIMER_CHANNEL);
+}
+
+uint32_t Timer_GetTime(void)
+{
+    return PIT_GetCurrentTimerCount(PIT, PIT_TIMER_CHANNEL);
+}

right/src/timer.h

@@ -0,0 +1,17 @@
+#ifndef __TIMER_H__
+#define __TIMER_H__
+
+// Includes:
+
+    #include "peripherals/pit.h"
+
+// Macros:
+
+    #define TIMER_INTERVAL_USEC 1000
+
+// Functions:
+
+    void Timer_Init(void);
+    uint32_t Timer_GetTime(void);
+
+#endif

right/src/usb_commands/usb_command_get_debug_buffer.c

@@ -4,6 +4,7 @@
 #include "slave_scheduler.h"
 #include "i2c_watchdog.h"
 #include "buffer.h"
+#include "timer.h"
 
 uint8_t DebugBuffer[USB_GENERIC_HID_OUT_BUFFER_LENGTH];
 
@@ -13,6 +14,7 @@ void UsbCommand_GetDebugBuffer(void)
     SetDebugBufferUint32(5, I2cSlaveScheduler_Counter);
     SetDebugBufferUint32(9, I2cWatchdog_WatchCounter);
     SetDebugBufferUint32(13, I2cWatchdog_RecoveryCounter);
+    SetDebugBufferUint32(40, Timer_GetTime());
 
     memcpy(GenericHidOutBuffer, DebugBuffer, USB_GENERIC_HID_OUT_BUFFER_LENGTH);