MyHwHAL.h File Reference

Detailed Description

MySensors hardware abstraction layer

Definition in file MyHwHAL.h.

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros
#define	INVALID_INTERRUPT_NUM   (0xFFu)
	Invalid interrupt.
#define	MY_HWID_PADDING_BYTE   (0xAAu)
	HwID padding byte.
#define	IRQ_HANDLER_ATTR
	ESP8266/ESP32 IRQ handlers need to be stored in IRAM.
#define	MY_CRITICAL_SECTION
	Creates a block of code that is guaranteed to be executed atomically. Upon entering the block all interrupts are disabled, and re-enabled upon exiting the block from any exit path. A typical example that requires atomic access is a 16 (or more) bit variable that is shared between the main execution path and an ISR, on an 8-bit platform (e.g AVR): More...
#define	MY_HW_HAS_GETENTROPY
	Define this, if hwGetentropy is implemented. More...

Typedefs
typedef uint8_t	unique_id_t[16]
	unique ID

Functions
int8_t	hwSleep (uint32_t ms)
int8_t	hwSleep (const uint8_t interrupt, const uint8_t mode, uint32_t ms)
int8_t	hwSleep (const uint8_t interrupt1, const uint8_t mode1, const uint8_t interrupt2, const uint8_t mode2, uint32_t ms)
bool	hwUniqueID (unique_id_t *uniqueID)
uint16_t	hwCPUVoltage (void)
uint16_t	hwCPUFrequency (void)
int8_t	hwCPUTemperature (void)
uint16_t	hwFreeMem (void)

Macro Definition Documentation

MY_CRITICAL_SECTION

#define MY_CRITICAL_SECTION

Creates a block of code that is guaranteed to be executed atomically. Upon entering the block all interrupts are disabled, and re-enabled upon exiting the block from any exit path. A typical example that requires atomic access is a 16 (or more) bit variable that is shared between the main execution path and an ISR, on an 8-bit platform (e.g AVR):

volatile uint16_t val = 0;
 
void interrupHandler()
{
  val = ~val;
}
 
void loop()
{
  uint16_t copy_val;
  MY_CRITICAL_SECTION
  {
    copy_val = val;
  }
}

All code within the MY_CRITICAL_SECTION block will be protected from being interrupted during execution.

Definition at line 183 of file MyHwHAL.h.

MY_HW_HAS_GETENTROPY

#define MY_HW_HAS_GETENTROPY

Define this, if hwGetentropy is implemented.

ssize_t hwGetentropy(void *__buffer, size_t __length);

Definition at line 184 of file MyHwHAL.h.

Function Documentation

hwCPUFrequency()

uint16_t hwCPUFrequency

(

void

)

CPU frequency

Returns

CPU frequency in 1/10Mhz

hwCPUTemperature()

int8_t hwCPUTemperature

(

void

)

CPU temperature (if available) Adjust calibration parameters via MY_<ARCH>_TEMPERATURE_OFFSET and MY_<ARCH>_TEMPERATURE_GAIN

Returns

CPU temperature in °C, -127 if not available

hwCPUVoltage()

uint16_t hwCPUVoltage

(

void

)

CPU voltage

Returns

CPU voltage in mV

hwFreeMem()

uint16_t hwFreeMem

(

void

)

Report free memory (if function available)

Returns

free memory in bytes

hwSleep() [1/3]

int8_t hwSleep	(	const uint8_t	interrupt,
		const uint8_t	mode,
		uint32_t	ms
	)

Sleep for a defined time, using minimum power, or until woken by interrupt.

Parameters

interrupt	Interrupt number, which can wake the mcu from sleep.
mode	Interrupt mode, as passed to attachInterrupt.
ms	Time to sleep, in [ms].

Returns

MY_WAKE_UP_BY_TIMER when woken by timer, or interrupt number when woken by interrupt.

hwSleep() [2/3]

int8_t hwSleep	(	const uint8_t	interrupt1,
		const uint8_t	mode1,
		const uint8_t	interrupt2,
		const uint8_t	mode2,
		uint32_t	ms
	)

Sleep for a defined time, using minimum power, or until woken by one of the interrupts.

Parameters

interrupt1	Interrupt1 number, which can wake the mcu from sleep.
mode1	Interrupt1 mode, as passed to attachInterrupt.
interrupt2	Interrupt2 number, which can wake the mcu from sleep.
mode2	Interrupt2 mode, as passed to attachInterrupt.
ms	Time to sleep, in [ms].

Returns

MY_WAKE_UP_BY_TIMER when woken by timer, or interrupt number when woken by interrupt.

hwSleep() [3/3]

int8_t hwSleep

(

uint32_t

ms

)

Sleep for a defined time, using minimum power.

Parameters

ms	Time to sleep, in [ms].

Returns

MY_WAKE_UP_BY_TIMER.

hwUniqueID()

bool hwUniqueID

(

unique_id_t *

uniqueID

)

Retrieve unique hardware ID

Parameters

uniqueID

unique ID

Returns

True if unique ID successfully retrieved

Examples

SecurityPersonalizer.ino.