| BlueNRG-1 Peripherals drivers Examples

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GPIO_IOWakeup_main.c File Reference

This code example demonstrates how to wake up the device from the standby mode using the GPIO interrupt. More...

`#include "BlueNRG1.h"`
`#include "BlueNRG1_it.h"`
`#include "BlueNRG1_conf.h"`
`#include "SDK_EVAL_Config.h"`

Go to the source code of this file.

## Macros

#define | SYST_CLOCK 16000000 /* System clock frequency */

## Functions

void | SWDClk_Interrupt_Configuration (void)
| GPIO Interrupt Configuration. Configure interrupt on rising edge on SWD_CLK_PIN. More...
int | main (void)
| Main program code. More...

## Detailed Description

This code example demonstrates how to wake up the device from the standby mode using the GPIO interrupt.

# ATOLLIC project

To use the project with ATOLLIC TrueSTUDIO for ARM, please follow the instructions below:

1. Open the ATOLLIC TrueSTUDIO for ARM and select File->Import... Project menu.
2. Select Existing Projects into Workspace.
3. Select the ATOLLIC project
4. Select desired configuration to build from Project->Manage Configurations
5. Select Project->Rebuild Project. This will recompile and link the entire application
6. To download the binary image, please connect STLink to JTAG connector in your board (if available).
7. Select Project->Download to download the related binary image.
8. Alternatively, open the BlueNRG1 GUI, put the board in bootloader mode and download the built binary image.

# KEIL project

To use the project with KEIL uVision 5 for ARM, please follow the instructions below:

1. Open the KEIL uVision 5 for ARM and select Project->Open Project menu.
2. Open the KEIL project `...\Project\BlueNRG1_Periph_Examples\GPIO\IOWakeup\MDK-ARM\IOWakeup.uvprojx`
3. Select desired configuration to build
4. Select Project->Rebuild all target files. This will recompile and link the entire application
5. To download the binary image, please connect STLink to JTAG connector in your board (if available).
6. Select Project->Download to download the related binary image.
7. Alternatively, open the BlueNRG1 GUI, put the board in bootloader mode and download the built binary image.

# IAR project

To use the project with IAR Embedded Workbench for ARM, please follow the instructions below:

1. Open the Embedded Workbench for ARM and select File->Open->Workspace menu.
2. Open the IAR project `...\Project\BlueNRG1_Periph_Examples\GPIO\IOWakeup\EWARM\IOWakeup.eww`
3. Select desired configuration to build
4. Select Project->Rebuild All. This will recompile and link the entire application
5. To download the binary image, please connect STLink to JTAG connector in your board (if available).
6. Select Project->Download and Debug to download the related binary image.
7. Alternatively, open the BlueNRG1 GUI, put the board in bootloader mode and download the built binary image.

## Project configurations

- `Release` - Release configuration

# Boards supported

- `STEVAL-IDB007V1`

# Power configuration settings

STEVAL-IDB007V1
Jumper name |  | Description
JP1 | JP2 |
ON 1-2 | ON 2-3 | USB supply power
ON 2-3 | ON 1-2 | The supply voltage must be provided through battery pins.
ON 1-2 |  | USB supply power to STM32L1, JP2 pin 2 external power to BlueNRG1

# Jumper settings

STEVAL-IDB007V1
Jumper name | Description
JP1 | 1-2: to provide power from USB (JP2:2-3). 2-3: to provide power from battery holder (JP2:1-2)
JP2 | 1-2: to provide power from battery holder (JP1:2-3). 2-3: to provide power from USB (JP1:1-2). Pin2 to VDD to provide external power supply to BlueNRG-1 (JP1: 1-2)
JP3 | pin 1 and 2 UART RX and TX of MCU. pin 3 GND.
JP4 | Fitted: to provide VBLUE to BlueNRG1. It can be used also for current measurement.
JP5 | Fitted : TEST pin to VBLUE. Not fitted: TEST pin to GND

# Pin settings

PIN name | STEVAL-IDB007V1
ADC1 | Not Used
ADC2 | Not Used
IO0 | Not Used
IO1 | Not Used
IO11 | Not Used
IO12 | Not Used
IO13 | External interrupt from PUSH1
IO14 | Not Used
IO2 | Not Used
IO3 | Not Used
IO4 | Not Used
IO5 | Not Used
IO6 | Drive the LED DL1
IO7 | Drive the LED DL2
IO8 | Not Used
TEST1 | Not Used

# LEDs description

LED name | STEVAL-IDB007V1
DL1 | Toggle
DL2 | Toggle
DL3 | Not Used
DL4 | Power

# Buttons description

BUTTON name | STEVAL-IDB007V1
PUSH1 | Wakeup the BlueNRG1
PUSH2 | Not Used
RESET | Reset BlueNRG1

# Usage

The BlueNRG1 provides 15 programmable I/Os. Each I/O can generate an interrupt. Interrupts are generated depending on a level or edge.

This example demonstrates the possibility how to wake up the device from the standby mode using the GPIO interrupt. The configuration is as follows:

- The PUSH1 button (IO13) is configured to generate the interrupt event on both edge transaction of the input signal. The LED DL2 is toggled. The system is waked up and then the LED DL1 is toggled by the systick interrupt service routine (500ms period).

Once the device is in standby, there is no possibility to connect to it by the debug tool or download a new code as the clocks are down and the system voltages decreased to the minimum value. It is necessary to wake-up the system first. For that reason the IO9 (SDW clock signal) as wake-up event. In this case any connect attempt from the debugger will wake-up the system.

Definition in file GPIO_IOWakeup_main.c.