EFM32™︎ Zero Gecko Starter Kit w/ Sensor Card: logging to SD card

RE: EFM32™︎ Zero Gecko Starter Kit w/ Sensor Card: logging to SD card

Jan Cumps — Wed, 03 Dec 2014 00:03:05 GMT

Wiring info:

[View:/resized-image/__size/620x465/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-77fb8d8b-58ec-4277-bdd7-8ed8e5db50aa/0753.contentimage_5F00_188749.jpg:620:465]

[View:/resized-image/__size/620x478/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-77fb8d8b-58ec-4277-bdd7-8ed8e5db50aa/7610.contentimage_5F00_188750.jpg:620:478]

RE: EFM32™︎ Zero Gecko Starter Kit w/ Sensor Card: logging to SD card

Jan Cumps — Tue, 02 Dec 2014 13:10:39 GMT

Success. I've attached the project to the original blog post.

Here's the content of the log file after 8 samples:

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:3ef06e6b-9b7d-4651-b12d-db8be7f5e991:type=text&text=temperature%3Bhumidity%3Buv%0A21125000%3B00040455%3B00000000%0A21114000%3B00040737%3B00000000%0A21104000%3B00040722%3B00000000%0A21104000%3B00040699%3B00000000%0A21104000%3B00040707%3B00000000%0A21104000%3B00041080%3B00000000%0A21125000%3B00040989%3B00000000%0A21114000%3B00040981%3B00000000]

RE: EFM32™︎ Zero Gecko Starter Kit w/ Sensor Card: logging to SD card

Jan Cumps — Mon, 01 Dec 2014 19:42:52 GMT

I have the minimalist weather station running.

arm-none-eabi-size "STK3200_weatherstation_sd_logger.axf"

text data bss dec hex filename

8636 116 240 8992 2320 STK3200_weatherstation_sd_logger.axf

There's no energy optimization yet, and no SD card logging.

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:3ef06e6b-9b7d-4651-b12d-db8be7f5e991:type=c_cpp&text=int+main%28void%29%0A%7B%0A%0A%0A++int++++++++++++++objectDetect%3B%0A%0A%0A++I2C_Init_TypeDef+i2cInit+%3D+I2C_INIT_DEFAULT%3B%0A++uint32_t+++++++++rhData%3B%0A++bool+++++++++++++si7013_status%2C+si1147_status%3B%0A++int32_t++++++++++tempData%3B%0A++uint16_t+++++++++uvData%3B%0A++uint32_t+++++++++vBat+%3D+3300%3B%0A++bool+++++++++++++lowBatPrevious+%3D+true%3B%0A++bool+++++++++++++lowBat+%3D+false%3B%0A%0A%0A++%2F*+Chip+errata+*%2F%0A++CHIP_Init%28%29%3B%0A%0A%0A++%2F*+Misc+initalizations.+*%2F%0A++gpioSetup%28%29%3B%0A++adcInit%28%29%3B%0A%0A%0A++%2F*+Misc+timers.+*%2F%0A++RTCDRV_Init%28%29%3B%0A++RTCDRV_AllocateTimer%28%26periodicUpdateTimerId%29%3B%0A%0A%0A++%2F*+Initialize+I2C+driver%2C+using+standard+rate.+*%2F%0A++I2CDRV_Init%28%26i2cInit%29%3B%0A%0A%0A++si7013_status+%3D+Si7013_Detect%28I2C0%2C+SI7013_ADDR%29%3B%0A++si1147_status+%3D+Si1147_Detect_Device%28I2C0%2C+SI1147_ADDR%29%3B%0A++%2F*configure+prox+sensor+to+enter+low+power+state*%2F%0A++Si1147_ConfigureDetection%28I2C0%2C+SI1147_ADDR%2C+true%29%3B%0A++RTCDRV_StartTimer%28periodicUpdateTimerId%2C+rtcdrvTimerTypePeriodic%2C%0A++++++++++++++++++++PERIODIC_UPDATE_MS%2C+periodicUpdateCallback%2C+NULL%29%3B%0Awhile+%281%29%0A++%7B%0A++++if+%28updateMeasurement%29%0A++++%7B%0A++++++performMeasurements%28%26rhData%2C+%26tempData%2C+%26uvData%2C+%26objectDetect%2C+%26vBat%29%3B%0A++++++updateMeasurement+%3D+false%3B%0A++++++if+%28lowBatPrevious%29%0A++++++++++lowBat+%3D+%28vBat+%3C%3D+LOW_BATTERY_THRESHOLD%29%3B%0A++++++else%0A++++++++++lowBat+%3D+false%3B%0A++++++lowBatPrevious+%3D+%28vBat+%3C%3D+LOW_BATTERY_THRESHOLD%29%3B%0A++++%7D%0A%2F%2F++++EMU_EnterEM2%28false%29%3B%0A++%7D]

It seems that it's not possible to attach files to comments.

RE: EFM32™︎ Zero Gecko Starter Kit w/ Sensor Card: logging to SD card

Jan Cumps — Mon, 01 Dec 2014 12:49:58 GMT

As a first exercise, I have created a new project based on the weatherstation example:

[View:/resized-image/__size/212x526/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-77fb8d8b-58ec-4277-bdd7-8ed8e5db50aa/0537.contentimage_5F00_188748.png:212:526]

I have removed all code related to the user interface: buttons, screen, gesture, and the majority of timers.

This gives me a project with the following size in Debug configuration:

arm-none-eabi-size "STK3200_weatherstation_sd_logger.axf"

text data bss dec hex filename

8756 116 236 9108 2394 STK3200_weatherstation_sd_logger.axf

I am now going to rework that stripped down example so that it actually does some measurements at regular times.