tmr.c File Reference

Controls the timer peripheral. More...

#include <errno.h>
#include "stm32f1xx_hal.h"
#include "PHiLIP_typedef.h"
#include "PHiLIP_defaults.h"
#include "port.h"
#include "gpio.h"
#include "trace.h"
#include "tmr.h"

Data Structures
struct	tmr_dev_t
	The parameters for tmr control. More...

Functions
void	init_dut_ic (map_t *map)
	Initializes timer registers and peripheral. More...
void	init_dut_ic_msp ()
	Only for use with the STM32xxxx_HAL_Driver.
void	deinit_dut_ic_msp ()
	Only for use with the STM32xxxx_HAL_Driver.
error_t	commit_dut_ic ()
	Commits the adc registers and executes operations. More...
void	poll_dut_ic ()
	Polls for high speed input capture values. More...
void	update_dut_ic_inputs ()
	Updates the dut_ic input level.
void	DUT_IC_DMA_INT ()
	This function handles dut_ic dma event interrupt.
void	DUT_IC_GPIO_INT ()
	Trigger on edge, must be quick and save counter value in buffer.

Detailed Description

Controls the timer peripheral.

Author

Kevin Weiss

Date

03.03.2020

Author

Kevin Weiss

Date

03.03.2020 This module requires very low jitter since the precision is 14ns. In interrupt mode events can occur as fast as 1us apart, however, time must be allowed for the buffer to be processed. With the DMA it appears that events can still be caught up to 200ns. However the buffer still must not overflow too quickly

Note

Testing shows the a 150us wait must happen for every 255 events to prevent any data corruption.