Changeset - b77b97fa501d
[Not reviewed]
cortex-f0
0 1 0
Ethan Zonca - 9 years ago 2015-08-23 19:25:58
ez@ethanzonca.com
Add max31865 register defs
1 file changed with 36 insertions and 1 deletions:
0 comments (0 inline, 0 general)
max31865.c
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@@ -5,13 +5,48 @@
 
#include "states.h"
 
#include "gpio.h"
 

	
 

	
 
// Registers
 
#define MAX31855_REG_CONFIG 0x00
 
#define MAX31855_REG_RTD_MSB 0x01
 
#define MAX31855_REG_RTD_LSB 0x02
 
#define MAX31855_REG_HFAULT_THRESH_MSB 0x03
 
#define MAX31855_REG_HFAULT_THRESH_LSB 0x04
 
#define MAX31855_REG_LFAULT_THRESH_MSB 0x05
 
#define MAX31855_REG_LFAULT_THRESH_LSB 0x06
 
#define MAX31855_REG_FAULTSTATUS 0x07
 

	
 
#define MAX31855_REGWRITEMODIFIER 0x80
 

	
 
// Fields 
 
#define MAX31865_CONF_VBIAS (1<<7)
 
#define MAX31865_CONF_CONVMODE (1<<6)
 
#define MAX31865_CONF_1SHOT (1<<5)
 
#define MAX31865_CONF_3WIRE (1<<4)
 

	
 
#define MAX31865_CONF_FAULT_NOACTION    0b0000
 
#define MAX31865_CONF_FAULT_AUTODELAY   0b0100
 
#define MAX31865_CONF_FAULT_MANUALELAY1 0b1000
 
#define MAX31865_CONF_FAULT_MANUALELAY2 0b1100
 

	
 
#define MAX31865_CONF_FAULT_CLEAR (1<<1)
 
#define MAX31865_CONF_50_60HZ_FILTER (1<<0)
 

	
 

	
 
// Grab temperature reading from MAX31865
 
void max31865_readtemp(SPI_HandleTypeDef* hspi1, therm_settings_t* set, therm_status_t* status)
 
{
 
    // ** FIXME ** FIXME ** FIXME ** //
 
    ///////////////////////////////////
 
    // This is duplicated from MAX31855, update for MAX31865 registers/etc
 
    /////////////////////////////////// 
 

	
 
    // TODO: Set configuration register based on params in config.h (2-wire, 4-wire, etc RTD). This is register 0x00.
 
        // 2-wire RTC or 2-wire (duh) NTC thermistor will be the only options
 
        // Need option for resistance of RTD
 
        // These options should be stored in the set structure and should be menu-selectable
 
    // TODO: Read RTD msbs (0x01)
 
    // TODO: Read RTD LSBs (0x02)
 

	
 
    // Assert CS
 
    HAL_GPIO_WritePin(MAX_CS, 0);
 

	
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