temp.c File Reference

Manage temperature sensors. More...

#include "temp.h"
#include <stdlib.h>
#include <avr/eeprom.h>
#include <avr/pgmspace.h>
#include "arduino.h"
#include "delay.h"
#include "debug.h"
#include "sersendf.h"
#include "heater.h"
#include "config.h"
#include "analog.h"
#include "ThermistorTable.h"

Data Structures
struct	temp_sensor_definition_t
	holds metadata for each temperature sensor More...
Defines
#define	DEFINE_TEMP_SENSOR(name, type, pin)   { (type), (pin), (HEATER_ ## name) },
	help build list of sensors from entries in config.h
Enumerations
enum	temp_flags_enum { PRESENT, TCOPEN, PRESENT, TCOPEN }
Functions
void	temp_init ()
	set up temp sensors. Currently only the 'intercom' sensor needs initialisation.
void	temp_sensor_tick ()
	called every 10ms from clock.c - check all temp sensors that are ready for checking
uint8_t	temp_achieved ()
	report whether all temp sensors are reading their target temperatures used for M109 and friends
void	temp_set (temp_sensor_t index, uint16_t temperature)
	specify a target temperature
uint16_t	temp_get (temp_sensor_t index)
	return most recent reading for a sensor
void	temp_print (temp_sensor_t index)
	send temperatures to host
Variables
struct {
temp_flags_enum   temp_flags
	flags
uint16_t   last_read_temp
	last received reading
uint16_t   target_temp
	manipulate attached heater to attempt to achieve this value
uint8_t   temp_residency
	how long have we been close to target temperature?
uint16_t   next_read_time
	how long until we can read this sensor again?
}	temp_sensors_runtime [NUM_TEMP_SENSORS]

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Detailed Description

Manage temperature sensors.

Note:

ALL temperatures are stored as 14.2 fixed point in teacup, so we have a range of 0 - 16383.75 celsius and a precision of 0.25 celsius. That includes the ThermistorTable, which is why you can't copy and paste one from other firmwares which don't do this.

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Function Documentation

uint16_t temp_get

(

temp_sensor_t

index )

return most recent reading for a sensor

Parameters:

index

sensor to read

void temp_print

(

temp_sensor_t

index )

send temperatures to host

Parameters:

index

sensor value to send

Referenced by process_gcode_command().

void temp_set	(	temp_sensor_t	index,
		uint16_t	temperature
	)

specify a target temperature

Parameters:

index	sensor to set a target for
temperature	target temperature to aim for

Referenced by process_gcode_command().