gpio.c File Reference

: This file provides code for the configuration of all used GPIO pins. More...

#include "gpio.h"

Functions
void	MX_GPIO_Init (void)
void	S2LPShutdownEnter (void)
	Puts at logic 1 the SDN pin. More...
void	S2LPShutdownInit (void)
	Init shutdown pin on the uC and set it to 1 (Shutdown active). More...
void	S2LPShutdownExit (void)
	Put at logic 0 the SDN pin. More...
uint8_t	S2LPShutdownCheck (void)
	check the logic (0 or 1) at the SDN pin. More...
void	ST_MCU_API_Shutdown (sfx_u8 value)
	Set on or off the S2-LP by GPIO. More...
void	S2LPIRQInit (void)
	Configures MCU GPIO and EXTI Line for GPIOs. More...
void	S2LPIRQEnable (uint8_t state, uint8_t edge_direction)
	Enables or disables the interrupt on GPIO . More...
void	ST_MCU_API_GpioIRQ (sfx_u8 pin, sfx_u8 new_state, sfx_u8 trigger)
	Enables or Disables the external interrupt on the microcontroller side. The interrupt must be set on the rising or falling edge of the input signal according to the trigger_flag. The pin number passed represents the GPIO number of the S2-LP. More...
void	ST_MCU_API_LowPower (sfx_u8 low_power_flag)
	This function instructs the mcu_api to send the microcontroller in sleep or not during the protocol operations. It is mainly used for debugging purposes. More...
uint8_t	getLowPowerFlag (void)
	Get low power flag to check the S2LP state. More...
void	HAL_GPIO_EXTI_Callback (uint16_t GPIO_Pin)
void	setS2lpIrqRaisedFlag (uint8_t s2lpIrqRaised)
	Get low power flag to check the S2LP state. More...
uint8_t	getS2lpIrqRaisedFlag (void)
	Get S2LP IRQ raised flag. More...

Variables
GPIO_PinState	csd_pin_inst
GPIO_PinState	cps_pin_inst
GPIO_PinState	ctx_pin_inst

Detailed Description

: This file provides code for the configuration of all used GPIO pins.

Attention

© Copyright (c) 2019 STMicroelectronics. All rights reserved.

This software component is licensed by ST under BSD 3-Clause license, the "License"; You may not use this file except in compliance with the License. You may obtain a copy of the License at: opensource.org/licenses/BSD-3-Clause

Function Documentation

getLowPowerFlag()

uint8_t getLowPowerFlag

(

void

)

Get low power flag to check the S2LP state.

---

Parameters

[in]	none
[out]	none

Return values

low_power

1 if it's low power, else 0

getS2lpIrqRaisedFlag()

uint8_t getS2lpIrqRaisedFlag

(

void

)

Get S2LP IRQ raised flag.

---

Parameters

[in]	none
[out]	none

Return values

s2lp_irq_raised

1 if it's raised, else 0

MX_GPIO_Init()

void MX_GPIO_Init

(

void

)

Configure pins as Analog Input Output EVENT_OUT EXTI

S2LPIRQEnable()

void S2LPIRQEnable	(	uint8_t	state,
		uint8_t	edge_direction
	)

Enables or disables the interrupt on GPIO .

Parameters

state	Specifies the State. This parameter can be one of following parameters: 0: disable >0: enable
edge_direction	Specifies the sensitive edge. This parameter can be one of following parameters: 0: falling edge 1: rising edge

Return values

None.

S2LPIRQInit()

void S2LPIRQInit

(

void

)

Configures MCU GPIO and EXTI Line for GPIOs.

Parameters

None.

Return values

None.

S2LPShutdownCheck()

uint8_t S2LPShutdownCheck

(

void

)

check the logic (0 or 1) at the SDN pin.

Parameters

None.

Return values

FlagStatus.

S2LPShutdownEnter()

void S2LPShutdownEnter

(

void

)

Puts at logic 1 the SDN pin.

Parameters

None.

Return values

None.

S2LPShutdownExit()

void S2LPShutdownExit

(

void

)

Put at logic 0 the SDN pin.

Parameters

None.

Return values

None.

S2LPShutdownInit()

void S2LPShutdownInit

(

void

)

Init shutdown pin on the uC and set it to 1 (Shutdown active).

Parameters

None.

Return values

None.

setS2lpIrqRaisedFlag()

void setS2lpIrqRaisedFlag

(

uint8_t

s2lpIrqRaised

)

Get low power flag to check the S2LP state.

---

Parameters

[in]	s2lpIrqRaised	1 if it's raised, else 0
[out]	none

Return values

none

ST_MCU_API_GpioIRQ()

void ST_MCU_API_GpioIRQ	(	sfx_u8	pin,
		sfx_u8	new_state,
		sfx_u8	trigger
	)

Enables or Disables the external interrupt on the microcontroller side. The interrupt must be set on the rising or falling edge of the input signal according to the trigger_flag. The pin number passed represents the GPIO number of the S2-LP.

---

Parameters

[in]	uint8_t	pin: the GPIO pin of the S2-LP (integer from 0 to 3).
[in]	uint8_t	new_state: enable or disable the EXTI (can be 0 or 1).
[in]	uint8_t	trigger: trigger_flag: 1: rising edge 0: falling edge

Note

This is a function that is not required by the SIGFOX_API nor by the RF_API library.

Return values

None

ST_MCU_API_LowPower()

void ST_MCU_API_LowPower

(

sfx_u8

low_power_flag

)

This function instructs the mcu_api to send the microcontroller in sleep or not during the protocol operations. It is mainly used for debugging purposes.

---

Parameters

[in]

uint8_t

low_power_flag : enable the low power (1, default setting) or not (0).

Note

This is a function that is not required by the SIGFOX_API nor by the RF_API library.

Return values

None.

ST_MCU_API_Shutdown()

void ST_MCU_API_Shutdown

(

sfx_u8

value

)

Set on or off the S2-LP by GPIO.

---

Parameters

[in]

sfx_u8

value: if 1, the device should enter shutdown (OFF). if 0, the device should exit from shutdown (ON).

Return values

None