spindle working

Author: Miroslav Talasek

grbl/cpu_map.h

@@ -374,13 +374,13 @@
 #ifdef VARIABLE_SPINDLE
 
   // NOTE: On the 328p, these must be the same as the SPINDLE_ENABLE settings.
-#define SPINDLE_PWM_FREQUENCY       10000                   // KHz
+#define SPINDLE_PWM_FREQUENCY       1            // KHz
 #define SPINDLE_PWM_DDR	            GPIOA
 #define SPINDLE_PWM_PORT            GPIOA
 #define RCC_SPINDLE_PWM_PORT        RCC_APB2Periph_GPIOA
 #define SPINDLE_PWM_BIT	            8
 #endif // End of VARIABLE_SPINDLE
-#define SPINDLE_PWM_MAX_VALUE       255
+#define SPINDLE_PWM_MAX_VALUE       1000   
 #ifndef SPINDLE_PWM_MIN_VALUE
 #define SPINDLE_PWM_MIN_VALUE   1   // Must be greater than zero.
 #endif

grbl/defaults.h

@@ -538,7 +538,7 @@
 #define DEFAULT_X_MAX_TRAVEL 200.0f // mm NOTE: Must be a positive value.
 #define DEFAULT_Y_MAX_TRAVEL 300.0f // mm NOTE: Must be a positive value.
 #define DEFAULT_Z_MAX_TRAVEL 90.0f // mm NOTE: Must be a positive value.
-#define DEFAULT_SPINDLE_RPM_MAX 100.0f // rpm
+#define DEFAULT_SPINDLE_RPM_MAX 9000.0f // rpm
 #define DEFAULT_SPINDLE_RPM_MIN 0.0f // rpm
 #define DEFAULT_STEP_PULSE_MICROSECONDS 10
 #define DEFAULT_STEPPING_INVERT_MASK 0x1f

grbl/spindle_control.c

@@ -76,7 +76,7 @@ void spindle_init()
 
   timerInitStructure.TIM_Prescaler = F_CPU / 1000000 - 1; // 1000
   timerInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
-  timerInitStructure.TIM_Period = SPINDLE_PWM_MAX_VALUE;
+  timerInitStructure.TIM_Period = SPINDLE_PWM_MAX_VALUE -1;
   timerInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
   timerInitStructure.TIM_RepetitionCounter = 0;
   TIM_TimeBaseInit(TIM1, &timerInitStructure);