rooty/LibrePilot
1
0
Fork 0
mirror of https://bitbucket.org/librepilot/librepilot.git synced 2024-12-01 09:24:10 +01:00
Code Issues Releases Activity

Added provisions for TurboPWM and other custom servo update rates.

Browse Source 
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@226 ebee16cc-31ac-478f-84a7-5cbb03baadba
This commit is contained in:
gussy 2010-03-03 07:46:40 +00:00 committed by gussy
parent b205ebd873
commit 0968b0adf9
2 changed files with 43 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
flight/PiOS/STM32F10x/pios_servo.c
View File

@ -36,7 +36,7 @@
/* Local Variables */
static volatile uint16_t ServoPosition[SERVO_NUM_TIMER_SLOTS];
static volatile uint16_t ServoPosition[PIOS_SERVO_NUM_TIMERS];
/**
@ -49,10 +49,10 @@ void PIOS_Servo_Init(void)
GPIO_StructInit(&GPIO_InitStructure);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Pin = SERVO1_PIN | SERVO2_PIN | SERVO3_PIN | SERVO4_PIN;
GPIO_Init(SERVO1TO4_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = SERVO5_PIN | SERVO6_PIN | SERVO7_PIN | SERVO8_PIN;
GPIO_Init(SERVO5TO8_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PIOS_SERVO_GPIO_PIN_1 | PIOS_SERVO_GPIO_PIN_2 | PIOS_SERVO_GPIO_PIN_3 | PIOS_SERVO_GPIO_PIN_4;
GPIO_Init(PIOS_SERVO_GPIO_PORT_1TO4, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = PIOS_SERVO_GPIO_PIN_5 | PIOS_SERVO_GPIO_PIN_6 | PIOS_SERVO_GPIO_PIN_7 | PIOS_SERVO_GPIO_PIN_8;
GPIO_Init(PIOS_SERVO_GPIO_PORT_5TO8, &GPIO_InitStructure);
/* Initialise RCC Clocks (TIM4 and TIM8) */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);
@ -65,19 +65,19 @@ void PIOS_Servo_Init(void)
TIM_TimeBaseStructure.TIM_Prescaler = (PIOS_MASTER_CLOCK / 1000000) - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = ((1000000 / PIOS_SERVO_UPDATE_HZ) - 1);
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
/* Setup each timer separately */
TIM_OCInitTypeDef TIM_OCInitStructure;
/* TIM4 */
TIM_TimeBaseStructure.TIM_Period = (20000 - 1);
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_Pulse = SERVOS_POSITION_INITIAL;
TIM_OCInitStructure.TIM_Pulse = PIOS_SERVOS_INITIAL_POSITION;
TIM_OC1Init(TIM4, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM4, TIM_OCPreload_Enable);
TIM_OC2Init(TIM4, &TIM_OCInitStructure);
@ -91,14 +91,11 @@ void PIOS_Servo_Init(void)
TIM_Cmd(TIM4, ENABLE);
/* TIM8 */
TIM_TimeBaseStructure.TIM_Period = (20000 - 1);
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_Pulse = SERVOS_POSITION_INITIAL;
TIM_OCInitStructure.TIM_Pulse = PIOS_SERVOS_INITIAL_POSITION;
TIM_OC1Init(TIM8, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM8, TIM_OCPreload_Enable);
TIM_OC2Init(TIM8, &TIM_OCInitStructure);
@ -112,6 +109,36 @@ void PIOS_Servo_Init(void)
TIM_Cmd(TIM8, ENABLE);
}
/**
* Set the servo update rate (Max 500Hz)
* \param[in] onetofour Rate for outputs 1 to 4 (Hz)
* \param[in] fivetoeight Rate for outputs 5 to 8 (Hz)
*/
void PIOS_Servo_SetHz(uint16_t onetofour, uint16_t fivetoeight)
{
/* (Re)-Initialise Timers TIM4 and TIM8 */
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
/* Clipping */
if(onetofour > 500) {
onetofour = 500;
}
if(fivetoeight > 500) {
fivetoeight = 500;
}
TIM_TimeBaseStructure.TIM_Prescaler = (PIOS_MASTER_CLOCK / 1000000) - 1;
TIM_TimeBaseStructure.TIM_Period = ((1000000 / onetofour) - 1);
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = (PIOS_MASTER_CLOCK / 1000000) - 1;
TIM_TimeBaseStructure.TIM_Period = ((1000000 / fivetoeight) - 1);
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);
}
/**
* Set servo position
* \param[in] Servo Servo number (0-7)
@ -120,7 +147,7 @@ void PIOS_Servo_Init(void)
void PIOS_Servo_Set(uint8_t Servo, uint16_t Position)
{
/* Make sure servo exists */
if (Servo < NUM_SERVO_OUTPUTS && Servo >= 0)
if (Servo < PIOS_SERVO_NUM_OUTPUTS && Servo >= 0)
{
/* Clip servo position */
if(Position < Settings.Servos.PositionMin) {

5
flight/PiOS/inc/pios_servo.h
View File

@ -26,12 +26,9 @@
#ifndef PIOS_SERVO_H
#define PIOS_SERVO_H
/* Local Defines */
#define SERVO_NUM_TIMER_SLOTS 8
#define SERVOS_POSITION_INITIAL 1500
/* Public Functions */
extern void PIOS_Servo_Init(void);
extern void PIOS_Servo_SetHz(uint16_t onetofour, uint16_t fivetoeight);
extern void PIOS_Servo_Set(uint8_t Servo, uint16_t Position);
#endif /* PIOS_SERVO_H */