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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 28 |
1 files changed, 17 insertions, 11 deletions
@@ -44,9 +44,12 @@ brightness). There is a ground pad conveniently placed between the two pins. (Hopefully your soldering is a little neater than mine). +Optionally solder a small button between GPIO 16 and GND. This will be a test +button for checking the device is working properly (not illustrated above). + You can use other GPIOs if you prefer - just change the definitions of -`LED_RED` and `LED_GREEN` in `morningtown.c`. The positions of 21 and 22 just -happen to work well for the geometry of my own nightstand. +`LED_RED`, `LED_GREEN` and `TEST_BUTTON` in `morningtown.c`. The positions of +16, 21 and 22 just happen to work well for the geometry of my own nightstand. Software @@ -67,17 +70,20 @@ To set different wake-up times, edit routine `check_clock()` in Run `compile`, then copy `build/morningtown.uf2` to the Pico. -Boot up sequence ----------------- +Operation +--------- -Connect the Pico to any USB power supply. Afterwards: +Connect the Pico to any USB power supply. All three LEDs (red, green and the +one on Pi board itself) will light briefly. The device will then attempt to +connect to the WLAN and synchronise its clock. During this phase, the red LED +will be lit continuously and the board LED will light as long as the WLAN is +connected. Once an NTP reply is received, all the LEDs will go dark until +morning. -1. All three LEDs (red, green and the one on Pi board itself) light for 2 - seconds, then switch off. -2. Board LED lights to indicate WLAN connection -3. Flashing red LED indicates a problem. It will try again shortly. -4. Alternating red and green LEDs indicate successful NTP synchronisation. -5. All LEDs turn off. Everything dark until morning. +When the (optional) test button is pressed (and held), the board LED will +indicate a current WLAN connection, the green LED will indicate that NTP is +synchronised, and the red LED (hopefully not lit) indicates some kind of error +condition. Licence |