ppm_arch.c File Reference

STM32 ppm decoder. More...

#include "subsystems/radio_control.h"
#include "subsystems/radio_control/ppm.h"
#include <BOARD_CONFIG>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/timer.h>
#include <libopencm3/cm3/nvic.h>
#include "mcu_periph/gpio.h"
#include "mcu_arch.h"

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Macros
#define	ONE_MHZ_CLK   1000000
#define	PPM_IRQ_PRIO   2

Functions
void	ppm_arch_init (void)
	Architecture dependant code. More...

Variables
static uint32_t	timer_rollover_cnt

Detailed Description

STM32 ppm decoder.

Input signal either on:

• PA1 TIM2/CH2 (uart1 trig on Lisa/L) (Servo 6 on Lisa/M)
• PA10 TIM1/CH3 (uart1 trig on Lisa/L) (uart1 rx on Lisa/M)

Definition in file ppm_arch.c.

Macro Definition Documentation

#define ONE_MHZ_CLK   1000000

Definition at line 48 of file ppm_arch.c.

Referenced by ppm_arch_init().

#define PPM_IRQ_PRIO   2

Definition at line 52 of file ppm_arch.c.

Referenced by ppm_arch_init().

Function Documentation

void ppm_arch_init

(

void

)

Architecture dependant code.

Definition at line 99 of file ppm_arch.c.

References FALSE, gpio_setup_pin_af(), ONE_MHZ_CLK, PPM_CC_IE, PPM_CHANNEL, ppm_cur_pulse, PPM_GPIO_AF, PPM_GPIO_PIN, PPM_GPIO_PORT, ppm_icucfg, PPM_IRQ, PPM_IRQ2, PPM_IRQ_PRIO, ppm_last_pulse_time, PPM_TIMER, PPM_TIMER_INPUT, RADIO_CONTROL_NB_CHANNEL, RC_PPM_TICKS_PER_USEC, timer_get_frequency(), and timer_rollover_cnt.

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Variable Documentation

uint32_t timer_rollover_cnt

static

Definition at line 56 of file ppm_arch.c.

Referenced by ppm_arch_init().