This is a clock based on Raspberry Pico-W's Real-Time Clock
(RTC) that gets set and periodically adjusted through
NTP. The NTP server from pool.ntp.org is contacted via
the local Wifi network. The Pico-W and the display are on
the Pimoroni Galacic Unicorn,
a 53x11 RGB LED display.
$ cd ${DEV_HOME}
$ git clone -b master https://github.com/raspberrypi/pico-sdk.git
...
$ cd pico-sdk
$ git submodule update --init
...
$ export PICO_SDK_PATH=${DEV_HOME}/pico-sdkInstall the toolchain for AArch32 bare-metal targets. For macOS (Arm), 12.3.rel1 works.
Set PICO_TOOLCHIAN_PATH enviornment variables and add toolchain bin directory to PATH
export PICO_TOOLCHAIN_PATH=/Applications/ArmGNUToolchain/12.3.rel1/arm-none-eabi/bin
export PATH=$PATH:$PICO_TOOLCHAIN_PATH$ ${DEV_HOME}
$ git clone https://github.com/pimoroni/pimoroni-pico.git
...
$ git checkout 25237c54ce465279134fe429e4c11ffe5cb01cfd
..$ cd ${DEV_HOME}/pimoroni-pico
$ git clone https://github.com/muellren/ntp-rtc.git ntp_rtcAdd the ntp_rpc subdirectory as a subproject to CMakeLists.txt:
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,3 +40,4 @@ add_subdirectory(libraries)
# Example Pico Pack projects
add_subdirectory(examples)
+add_subdirectory(ntp_rtc)$ cd ${DEV_HOME}
$ mkdir build
$ cd build
$ cmake -G Ninja -DPICO_BOARD=pico_w \
-DCMAKE_EXPORT_COMPILE_COMMANDS=On -DCMAKE_BUILD_TYPE=Release \
-DWIFI_SSID=${YOUR_WIFI_SSID} -DWIFI_PASSWORD=${YOUR_WIFI_PASSWORD} \
..
...
Using PICO_SDK_PATH from environment ('/Users/muellerr/proj/embedded/rp2040/pico-sdk')
PICO_SDK_PATH is /Users/muellerr/proj/embedded/rp2040/pico-sdk
Defaulting PICO_PLATFORM to rp2040 since not specified.
Defaulting PICO platform compiler to pico_arm_gcc since not specified.
PICO compiler is pico_arm_gcc
-- The C compiler identification is GNU 12.3.1
-- The CXX compiler identification is GNU 12.3.1
-- The ASM compiler identification is GNU
-- Found assembler: /Applications/ArmGNUToolchain/12.3.rel1/arm-none-eabi/bin/arm-none-eabi-gcc
...
Build type is Release
PICO target board is pico_w.
Pico W Bluetooth build support available.
lwIP available at /Users/muellerr/proj/embedded/rp2040/pico-sdk/lib/lwip
Pico W Wi-Fi build support available.
mbedtls available at /Users/muellerr/proj/embedded/rp2040/pico-sdk/lib/mbedtls
-- Configuring done (3.0s)
-- Generating done (2.4s)
-- Build files have been written to: /Users/muellerr/proj/embedded/rp2040/pimoroni-pico/build
$ ninjaTwo binaries are in build/ntp_rtc.
ntp_rtc.uf2animated NTP RTCntp_rtc_simple_text.uf2simple text version of NTP RTC
- Push white BOOTSEL button of Raspberry Pico on the back of Galactic Unicorn.
- While holding BOOTSEL connect Galacigc Unicorn to the computer.
- USB-drive like drive called
PRI-RP2appears. - Copy either binary in to RPI-PR2 drive. The binaries are automatically installed. Afterwards the Pico reboots.
Note: Ignore error messages such as "Disk Not Ejected Properly" that are caused by the Pico automatically disconnecting from the computer when the binary is flashed.
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