Diff: headers/pwm.h

Revision:

10:e8b66718a103

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/headers/pwm.h	Tue Nov 29 15:02:01 2016 +0000
@@ -0,0 +1,96 @@
+// ************
+// * iQ_PWM.h *
+// ************
+//
+// Created: 2015/03/19
+// By: Damien Frost
+//
+// Description:
+// This file provides all of the functions used to configure the 
+// high speed PWM module of the STM32F401RE microcontroller.
+
+#ifndef PWWM_H
+#define PWWM_H
+
+#define SETUDIS     TIM1->CR1 |= TIM_CR1_UDIS
+#define CLEARUDIS   TIM1->CR1 &= ~TIM_CR1_UDIS
+#define PWMHIGHPRIORITY 0
+#define PWMLOWPRIORITY  1
+
+#define PS_RESET    0
+#define PS_SHIFT    1
+
+#define PWMST_SETUPCONV         0
+#define PWMST_STARTCONV         1
+#define PWMST_RUNSCSKDC         2
+#define PWMST_CALCNEWPH         3
+#define PWMST_SETNEWPH          4
+#define PWMST_SHIFT             5
+#define PWMST_SAMPLECHTROUGH    6
+#define PWMST_WAITSAMPLETROUGH  7    
+#define PWMST_WAIT              8
+#define PWMST_SAMPLECHHILL      9
+#define PWMST_WAITSAMPLEHILL    10
+#define PWMST_SKIPONECYCLE      11
+#define PWMST_MAXST             12
+
+#define PWMSTEP_US  (10.0f/839.0f)
+#define TS          (PWMPER_US/1000000)
+#define PWMARRMAX   (65535)
+
+
+
+// Global variables:
+extern float CurrentPhaseShift;
+extern unsigned int OneCycleSkipExitState;
+extern void (*const pwmsm_StateFunction [PWMST_MAXST]) (void);
+
+// Function prototypes:
+
+// Configures the PWM for use, using an initial duty cycle of 'duty'
+void ConfigurePWM(float duty_us, float period_us);
+
+// PWM ISR, used fo rdebugging purposes:
+void TIM1_CC_IRQHandler(void);
+
+// Configures the Dead time of the PWM, using an initial dead time of 'dt':
+void ConfigureDeadTime(float dt_ns);
+
+// Set duty by specifying the duty cycle in us:
+float SetDuty_us(float duty_us);
+
+// Set a new duty cycle by specifying it as a number between 0 and 1:
+float SetDuty(float duty);
+
+// This function checks to make sure the duty cycle is within the min and max constraints, it is called by the SetDuty functions.
+float CheckMinMaxDuty(float duty);
+
+// Turn on the the PWM signal:
+void TurnOnPWM(bool trueForOn);
+
+// Apply a phase shift:
+int PhaseShift(unsigned int cmd, float phase);
+
+// Set a new PWM Period:
+void SetPWMPeriodAndDuty(int pwmper);
+void SetPWMPeriodAndDuty_us(float period);
+
+// Set the time at which the PWM isr fires:
+void SetISRTime(unsigned int isrtime);
+
+// PWM State Machine functions:
+void pwmsm_SetupConv(void);         // PWMST_SETUPCONV          0
+void pwmsm_StartConv(void);         // PWMST_STARTCONV          1
+void pwmsm_RunScskdc(void);         // PWMST_RUNSCSKDC          2
+void pwmsm_CalcNewPh(void);         // PWMST_CALCNEWPH          3
+void pwmsm_SetNewPh(void);          // PWMST_SETNEWPH           4
+void pwmsm_Shift(void);             // PWMST_SHIFT              5
+void pwmsm_SampleChTrough(void);    // PWMST_SAMPLECHTROUGH     6
+void pwmsm_WaitSampleTrough(void);  // PWMST_WAITSAMPLETROUGH   7
+void pwmsm_Wait(void);              // PWMST_WAIT               8
+void pwmsm_SampleChHill(void);      // PWMST_SAMPLECHHILL       9
+void pwmsm_WaitSampleHill(void);    // PWMST_WAITSAMPLEHILL     10
+void pwmsm_SkipOneCycle(void);      // PWMST_SKIPONECYCLE       11
+void SetupOneCycleSkip(unsigned int nextState);
+
+#endif  /* PWWM_H */