Servo

Servo library is used to drive RC servo for RC.
RC Servo Library uses OpenCM9.04 hardware timer and can be used by connecting to PWM output pin.
A2 to D14 pins are PWM output pins.
Be careful when using Servo library because other functions using hardware timer can not be used at the same time.
See the list below for the hardware and channels used.

{GPIOA, GPIO_PIN_0,   &hADC1,   ADC_CHANNEL_0 , &hTIM2 ,   TIM_CHANNEL_1, 2       },  // 2
{GPIOA, GPIO_PIN_1,   &hADC1,   ADC_CHANNEL_1 , &hTIM2 ,   TIM_CHANNEL_2, 3       },  // 3
{GPIOA, GPIO_PIN_2,   &hADC1,   ADC_CHANNEL_2 , &hTIM2 ,   TIM_CHANNEL_3, 4       },  // 4
{GPIOA, GPIO_PIN_3,   &hADC1,   ADC_CHANNEL_3 , &hTIM2 ,   TIM_CHANNEL_4, 5       },  // 5
{GPIOA, GPIO_PIN_6,   &hADC1,   ADC_CHANNEL_6 , &hTIM3 ,   TIM_CHANNEL_1, 6       },  // 6
{GPIOA, GPIO_PIN_7,   &hADC1,   ADC_CHANNEL_7 , &hTIM3 ,   TIM_CHANNEL_2, 7       },  // 7
{GPIOB, GPIO_PIN_0,   &hADC1,   ADC_CHANNEL_8 , &hTIM3 ,   TIM_CHANNEL_3, 8       },  // 8
{GPIOB, GPIO_PIN_1,   &hADC1,   ADC_CHANNEL_9 , &hTIM3 ,   TIM_CHANNEL_4, 9       },  // 9

{GPIOA, GPIO_PIN_8,   NULL,     NO_ADC        , &hTIM1 ,   TIM_CHANNEL_1, 10      },  // 10
{GPIOA, GPIO_PIN_9,   NULL,     NO_ADC        , &hTIM1 ,   TIM_CHANNEL_2, 11      },  // 11
{GPIOA, GPIO_PIN_10,  NULL,     NO_ADC        , &hTIM1 ,   TIM_CHANNEL_3, 12      },  // 12
{GPIOB, GPIO_PIN_8,   NULL,     NO_ADC        , &hTIM4 ,   TIM_CHANNEL_3, 13      },  // 13
{GPIOB, GPIO_PIN_9,   NULL,     NO_ADC        , &hTIM4 ,   TIM_CHANNEL_4, 14      },  // 14 LED

Connection

Arduino code

This is an example of a Servo library and uses the A2 pin of OpenCM9.04. The range of the input value is 0 to 180 degrees.

#include <Servo.h>

Servo myservo;  // create servo object to control a servo

void setup() {
  myservo.attach(A2);  // attaches the servo on pin 2 to the servo object
}

void loop() {  
  myservo.write(0);                    // sets the servo position according to the scaled value
  delay(1000);                         // waits for the servo to get there
  myservo.write(180);                  // sets the servo position according to the scaled value
  delay(1000);                         // waits for the servo to get there
}