elex/pico-examples
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2022-04-19T19:58:40

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This commit is contained in:
Elex
2022-04-19 19:58:41 +09:00
parent 25752057b1
commit f405181219
26 changed files with 632 additions and 7 deletions
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2
01_blink/.vscode/c_cpp_properties.json vendored
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@@ -4,7 +4,7 @@
"name": "Linux GCC ARM",
"includePath": [
"${workspaceFolder}/**",
"${workspaceFolder}/../../../pico-sdk/src/**"
"${env:PICO_SDK_PATH}/src/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",

2
02_hello_serial/.vscode/c_cpp_properties.json vendored
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@@ -4,7 +4,7 @@
"name": "Linux GCC ARM",
"includePath": [
"${workspaceFolder}/**",
"${workspaceFolder}/../../../pico-sdk/src/**"
"${env:PICO_SDK_PATH}/src/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",

7
02_hello_serial/src/hello.c
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@@ -1,9 +1,10 @@
#include <stdio.h>
#include <string.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "pico/binary_info.h"
const uint LED_PIN = 25;
const uint LED_PIN = PICO_DEFAULT_LED_PIN;
int main()
{
@@ -15,12 +16,14 @@ int main()
gpio_init(LED_PIN);
gpio_set_dir(LED_PIN, GPIO_OUT);
char *str = "Hello World!";
while (true)
{
gpio_put(LED_PIN, false);
sleep_ms(250);
gpio_put(LED_PIN, true);
puts("Hello World~~!");
puts(str);
sleep_ms(1000);
}
}

2
03_data_types/.vscode/c_cpp_properties.json vendored
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@@ -4,7 +4,7 @@
"name": "Linux GCC ARM",
"includePath": [
"${workspaceFolder}/**",
"${workspaceFolder}/../../../pico-sdk/src/**"
"${env:PICO_SDK_PATH}/src/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",

1
04_watchdog/.gitignore vendored Normal file
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@@ -0,0 +1 @@
/build

18
04_watchdog/.vscode/c_cpp_properties.json vendored Normal file
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@@ -0,0 +1,18 @@
{
"configurations": [
{
"name": "Linux GCC ARM",
"includePath": [
"${workspaceFolder}/**",
"${env:PICO_SDK_PATH}/src/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "linux-gcc-arm",
"configurationProvider": "ms-vscode.cmake-tools"
}
],
"version": 4
}

22
04_watchdog/CMakeLists.txt Normal file
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@@ -0,0 +1,22 @@
cmake_minimum_required(VERSION 3.13)
include(pico_sdk_import.cmake)
project(watchdog C CXX ASM)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
pico_sdk_init()
add_executable(watchdog
src/watchdog.c
)
pico_set_program_name(watchdog "Watch Dog")
pico_set_program_version(watchdog "0.1.0")
pico_enable_stdio_usb(watchdog 1) # 표준 출력을 USB로
pico_enable_stdio_uart(watchdog 0) # 표준 출력을 UART로, 안함.
pico_add_extra_outputs(watchdog)
target_link_libraries(watchdog pico_stdlib)

62
04_watchdog/pico_sdk_import.cmake Normal file
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@@ -0,0 +1,62 @@
# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
# This can be dropped into an external project to help locate this SDK
# It should be include()ed prior to project()
if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
endif ()
set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
if (NOT PICO_SDK_PATH)
if (PICO_SDK_FETCH_FROM_GIT)
include(FetchContent)
set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
if (PICO_SDK_FETCH_FROM_GIT_PATH)
get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
endif ()
FetchContent_Declare(
pico_sdk
GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
GIT_TAG master
)
if (NOT pico_sdk)
message("Downloading Raspberry Pi Pico SDK")
FetchContent_Populate(pico_sdk)
set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
endif ()
set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
else ()
message(FATAL_ERROR
"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
)
endif ()
endif ()
get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
if (NOT EXISTS ${PICO_SDK_PATH})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
endif ()
set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
endif ()
set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
include(${PICO_SDK_INIT_CMAKE_FILE})

43
04_watchdog/run Executable file
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@@ -0,0 +1,43 @@
#!/usr/bin/bash
export PICO_SDK_PATH="/media/elex/UltraFit/pico-sdk"
function fn_clean {
if [ -d ./build ]
then
rm -r ./build
fi
mkdir build
}
function fn_cmake {
cd build
cmake ..
cd ..
}
function fn_make {
cd build
make
cd ..
}
if [ -z $1 ]
then
fn_clean
fn_cmake
fn_make
elif [ $1 == 'clean' ]
then
echo 'Cleaning build dir.'
fn_clean
elif [ $1 == 'cmake' ]
then
echo 'Exec cmake'
fn_cmake
elif [ $1 == 'make' ]
then
echo 'Exec make'
fn_make
else
echo 'What do you want???'
fi

50
04_watchdog/src/watchdog.c Normal file
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@@ -0,0 +1,50 @@
#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/watchdog.h"
#include "hardware/gpio.h"
#include "pico/binary_info.h"
const uint LED_PIN = PICO_DEFAULT_LED_PIN;
int main()
{
bi_decl(bi_program_description("Watchdog Test"));
bi_decl(bi_1pin_with_name(LED_PIN, "On-board LED"));
stdio_init_all();
if (watchdog_caused_reboot())
{
puts("Rebooted by Watchdog");
}
else
{
puts("Clean boot");
}
// 3초 이상 반응이 없으면 리부트.
watchdog_enable(3000, false);
gpio_init(LED_PIN);
gpio_set_dir(LED_PIN, GPIO_OUT);
while (true)
{
// 루프가 한 번 돌 때마다 워치독을 업데이트한다.
watchdog_update();
printf("Currently, %u\n", time_us_32());
gpio_put(LED_PIN, true);
sleep_ms(250);
gpio_put(LED_PIN, false);
sleep_ms(1000);
if (time_us_32() > 15000000)
{
// 테스트를 위해서 5초가 소요되는 작업을 한다.
// 워치독에 의해서 리부트될 것이다.
sleep_ms(5000);
}
}
}

1
05_time/.gitignore vendored Normal file
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@@ -0,0 +1 @@
/build

18
05_time/.vscode/c_cpp_properties.json vendored Normal file
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@@ -0,0 +1,18 @@
{
"configurations": [
{
"name": "Linux GCC ARM",
"includePath": [
"${workspaceFolder}/**",
"${env:PICO_SDK_PATH}/src/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "linux-gcc-arm",
"configurationProvider": "ms-vscode.cmake-tools"
}
],
"version": 4
}

5
05_time/.vscode/settings.json vendored Normal file
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@@ -0,0 +1,5 @@
{
"files.associations": {
"gpio.h": "c"
}
}

22
05_time/CMakeLists.txt Normal file
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@@ -0,0 +1,22 @@
cmake_minimum_required(VERSION 3.13)
include(pico_sdk_import.cmake)
project(time C CXX ASM)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
pico_sdk_init()
add_executable(time
src/time.c
)
pico_set_program_name(time "Time")
pico_set_program_version(time "0.1.0")
pico_enable_stdio_usb(time 1) # 표준 출력을 USB로
pico_enable_stdio_uart(time 0) # 표준 출력을 UART로, 안함.
pico_add_extra_outputs(time)
target_link_libraries(time pico_stdlib)

54
05_time/README.md Normal file
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@@ -0,0 +1,54 @@
# pico/time.h
## 시간
### 현재 시간
현재 시간을 가져옵니다.
- `static absolute_time_t get_absolute_time (void)`
### 특정 시간
절대 시간의 값을 부팅 이후 경과된 시간에 해당하는 시간 값으로 지정합니다.
- `static void update_us_since_boot (absolute_time_t *t, uint64_t us_since_boot)`
### 변환
절대 시간을 마이크로 초 또는 밀리토 단위로 변환합니다.
- `static uint64_t to_us_since_boot (absolute_time_t t)`
- `static uint32_t to_ms_since_boot (absolute_time_t t)`
### 연산
절대 시간에 마이크로 초 또는 밀리 초 값을 더합니다.
- `static absolute_time_t delayed_by_us (const absolute_time_t t, uint64_t us)`
- `static absolute_time_t delayed_by_ms (const absolute_time_t t, uint32_t ms)`
- `static absolute_time_t make_timeout_time_us (uint64_t us)`
- `static absolute_time_t make_timeout_time_ms (uint32_t ms)`
### 시간 차
두 절대 시간 사이의 간격을 마이크로 초 단위로 반환합니다.
- `static int64_t absolute_time_diff_us (absolute_time_t from, absolute_time_t to)`
### 널
시간 값이 널인지 여부를 확인합니다.
- `static bool is_nil_time (absolute_time_t t)`
# hardware/timer.h
## 현재 시간
부팅 이후 경과된 시간 값을 마이크로 초 단위로 반환합니다.
- `static uint32_t time_us_32 (void)`
1시간 11분 정도 이후에 0으로 돌아옵니다.
- `uint64_t time_us_64 (void)`
58만년 이상 계속해서 증가합니다.

62
05_time/pico_sdk_import.cmake Normal file
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@@ -0,0 +1,62 @@
# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
# This can be dropped into an external project to help locate this SDK
# It should be include()ed prior to project()
if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
endif ()
set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
if (NOT PICO_SDK_PATH)
if (PICO_SDK_FETCH_FROM_GIT)
include(FetchContent)
set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
if (PICO_SDK_FETCH_FROM_GIT_PATH)
get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
endif ()
FetchContent_Declare(
pico_sdk
GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
GIT_TAG master
)
if (NOT pico_sdk)
message("Downloading Raspberry Pi Pico SDK")
FetchContent_Populate(pico_sdk)
set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
endif ()
set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
else ()
message(FATAL_ERROR
"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
)
endif ()
endif ()
get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
if (NOT EXISTS ${PICO_SDK_PATH})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
endif ()
set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
endif ()
set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
include(${PICO_SDK_INIT_CMAKE_FILE})

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05_time/run Executable file
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@@ -0,0 +1,43 @@
#!/usr/bin/bash
export PICO_SDK_PATH="/media/elex/UltraFit/pico-sdk"
function fn_clean {
if [ -d ./build ]
then
rm -r ./build
fi
mkdir build
}
function fn_cmake {
cd build
cmake ..
cd ..
}
function fn_make {
cd build
make
cd ..
}
if [ -z $1 ]
then
fn_clean
fn_cmake
fn_make
elif [ $1 == 'clean' ]
then
echo 'Cleaning build dir.'
fn_clean
elif [ $1 == 'cmake' ]
then
echo 'Exec cmake'
fn_cmake
elif [ $1 == 'make' ]
then
echo 'Exec make'
fn_make
else
echo 'What do you want???'
fi

30
05_time/src/time.c Normal file
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@@ -0,0 +1,30 @@
#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/time.h"
#include "hardware/timer.h"
#include "hardware/gpio.h"
#include "pico/binary_info.h"
const uint LED_PIN = PICO_DEFAULT_LED_PIN;
int main()
{
bi_decl(bi_program_description("Time"));
bi_decl(bi_1pin_with_name(LED_PIN, "On-board LED"));
stdio_init_all();
gpio_init(LED_PIN);
gpio_set_dir(LED_PIN, GPIO_OUT);
while (true)
{
printf("%u %u\n", to_us_since_boot(get_absolute_time()), time_us_32());
gpio_put(LED_PIN, true);
sleep_ms(250);
gpio_put(LED_PIN, false);
sleep_ms(2000);
}
}

1
06_timer/.gitignore vendored Normal file
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@@ -0,0 +1 @@
/build

18
06_timer/.vscode/c_cpp_properties.json vendored Normal file
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@@ -0,0 +1,18 @@
{
"configurations": [
{
"name": "Linux GCC ARM",
"includePath": [
"${workspaceFolder}/**",
"${env:PICO_SDK_PATH}/src/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",
"cStandard": "c11",
"cppStandard": "c++17",
"intelliSenseMode": "linux-gcc-arm",
"configurationProvider": "ms-vscode.cmake-tools"
}
],
"version": 4
}

5
06_timer/.vscode/settings.json vendored Normal file
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@@ -0,0 +1,5 @@
{
"files.associations": {
"gpio.h": "c"
}
}

22
06_timer/CMakeLists.txt Normal file
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@@ -0,0 +1,22 @@
cmake_minimum_required(VERSION 3.13)
include(pico_sdk_import.cmake)
project(timer C CXX ASM)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
pico_sdk_init()
add_executable(timer
src/timer.c
)
pico_set_program_name(timer "Timer")
pico_set_program_version(timer "0.1.0")
pico_enable_stdio_usb(timer 1) # 표준 출력을 USB로
pico_enable_stdio_uart(timer 0) # 표준 출력을 UART로, 안함.
pico_add_extra_outputs(timer)
target_link_libraries(timer pico_stdlib)

62
06_timer/pico_sdk_import.cmake Normal file
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@@ -0,0 +1,62 @@
# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
# This can be dropped into an external project to help locate this SDK
# It should be include()ed prior to project()
if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
endif ()
set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
if (NOT PICO_SDK_PATH)
if (PICO_SDK_FETCH_FROM_GIT)
include(FetchContent)
set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
if (PICO_SDK_FETCH_FROM_GIT_PATH)
get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
endif ()
FetchContent_Declare(
pico_sdk
GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
GIT_TAG master
)
if (NOT pico_sdk)
message("Downloading Raspberry Pi Pico SDK")
FetchContent_Populate(pico_sdk)
set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
endif ()
set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
else ()
message(FATAL_ERROR
"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
)
endif ()
endif ()
get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
if (NOT EXISTS ${PICO_SDK_PATH})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
endif ()
set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
endif ()
set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
include(${PICO_SDK_INIT_CMAKE_FILE})

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06_timer/run Executable file
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#!/usr/bin/bash
export PICO_SDK_PATH="/media/elex/UltraFit/pico-sdk"
function fn_clean {
if [ -d ./build ]
then
rm -r ./build
fi
mkdir build
}
function fn_cmake {
cd build
cmake ..
cd ..
}
function fn_make {
cd build
make
cd ..
}
if [ -z $1 ]
then
fn_clean
fn_cmake
fn_make
elif [ $1 == 'clean' ]
then
echo 'Cleaning build dir.'
fn_clean
elif [ $1 == 'cmake' ]
then
echo 'Exec cmake'
fn_cmake
elif [ $1 == 'make' ]
then
echo 'Exec make'
fn_make
else
echo 'What do you want???'
fi

40
06_timer/src/timer.c Normal file
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@@ -0,0 +1,40 @@
#include <stdio.h>
#include "pico/stdlib.h"
#include "pico/time.h"
#include "hardware/timer.h"
#include "pico/binary_info.h"
// 알람 고유 번호와 사용자 데이터를 매개 변수로 전달 받습니다.
int64_t alarm_callback(alarm_id_t id, void *user_data)
{
printf("Timer %d fired!\n", (int)id);
// 반환값으로 마이크로 초 단위의 값을 사용해서 경과 시간 후 다시 실행되도록 지정할 수 있습니다.
return 0;
}
bool repeating_timer_callback(struct repeating_timer *t)
{
printf("Repeat at %lld\n", time_us_64());
// false를 반환하면 반복이 중단됩니다.
return true;
}
int main()
{
bi_decl(bi_program_description("Timer"));
stdio_init_all();
alarm_pool_init_default();
alarm_id_t alarmId = add_alarm_in_ms(10000, alarm_callback, NULL, false);
struct repeating_timer timer;
add_repeating_timer_ms(1500, repeating_timer_callback, NULL, &timer);
while (true)
{
printf("Currently, %u", time_us_32());
sleep_ms(1000);
}
}